# Lennart Ljung: DIVA Publications

The following list of publications has been generated automatically from the DiVA database.

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## Journal papers

2024

Biqiang Mu, Lennart Ljung, Tianshi Chen,
"When cannot regularization improve the least squares estimate in the kernel-based regularized system identification",
Automatica,
160,
2024.

2023

Yue Ju, Biqiang Mu, Lennart Ljung, Tianshi Chen,
"Asymptotic Theory for Regularized System Identification Part I: Empirical Bayes Hyperparameter Estimator",
IEEE Transactions on Automatic Control,
68(12):
7224-7239, 2023.

G. Pillonetto, Lennart Ljung,
"Full Bayesian identification of linear dynamic systems using stable kernels",
Proceedings of the National Academy of Sciences of the United States of America,
120(18),
2023.

Farnaz Adib Yaghmaie, Fredrik Gustafsson, Lennart Ljung,
"Linear Quadratic Control Using Model-Free Reinforcement Learning",
IEEE Transactions on Automatic Control,
68(2):
737-752, 2023.

2021

Zuogong Yue, Johan Thunberg, Lennart Ljung, Ye Yuan, Jorge Goncalves,
"System Aliasing in Dynamic Network Reconstruction:Issues on Low Sampling Frequencies",
IEEE Transactions on Automatic Control,
66(12):
5788-5801, 2021.

Lennart Ljung,
"Revisiting Total Model Errors and Model Validation",
Journal of Systems Science and Complexity,
34(5):
1598-1603, 2021.

Zuogong Yue, Johan Thunberg, Wei Pan, Lennart Ljung, Jorge Goncalves,
"Dynamic network reconstruction from heterogeneous datasets ?",
Automatica,
123,
2021.

2020

Chengpu Yu, Lennart Ljung, Adrian Wills, Michel Verhaegen,
"Constrained Subspace Method for the Identification of Structured State-Space Models (COSMOS)",
IEEE Transactions on Automatic Control,
65(10):
4201-4214, 2020.

Qinghua Zhang, Lennart Ljung, Rik Pintelon,
"On Local LTI Model Coherence for LPV Interpolation",
IEEE Transactions on Automatic Control,
65(8):
3671-3676, 2020.

Lennart Ljung, Tianshi Chen, Biqiang Mu,
"A shift in paradigm for system identification",
International Journal of Control,
93(2):
173-180, 2020.

2019

Johan Schoukens, Lennart Ljung,
"Nonlinear System Identification: A User-oriented road map",
IEEE CONTROL SYSTEMS MAGAZINE,
39(6):
28-99, 2019.

Johan Schoukens, Lennart Ljung,
"Nonlinear System Identification A USER-ORIENTED ROAD MAP",
IEEE CONTROL SYSTEMS MAGAZINE,
39(6):
28-99, 2019.

Lennart Ljung,
"On Convexification of System Identification Criteria",
Automation and remote control,
80(9):
1591-1606, 2019.

Valentin Pascu, Hugues Garnier, Lennart Ljung, Alexandre Janot,
"Benchmark problems for continuous-time model identification: Design aspects, results and perspectives",
Automatica,
107:
511-517, 2019.

Emina Alickovic, Thomas Lunner, Fredrik Gustafsson, Lennart Ljung,
"A Tutorial on Auditory Attention Identification Methods",
Frontiers in Neuroscience,
13,
2019.

2018

Wei Pan, Ye Yuan, Lennart Ljung, Jorge Goncalves, Guy-Bart Stan,
"Identification of Nonlinear State-Space Systems from Heterogeneous Datasets",
IEEE Transactions on Control of Network Systems,
5(2):
737-747, 2018.

Biqiang Mu, Tianshi Chen, Lennart Ljung,
"On asymptotic properties of hyperparameter estimators for kernel-based regularization methods",
Automatica,
94:
381-395, 2018.

Chengpu Yu, Lennart Ljung, Michel Verhaegen,
"Identification of structured state-space models",
Automatica,
90:
54-61, 2018.

2017

Aleksandr Aravkin, James V. Burke, Lennart Ljung, Aurelie Lozano, Gianluigi Pillonetto,
"Generalized Kalman smoothing: Modeling and algorithms",
Automatica,
86:
63-86, 2017.

Qinghua Zhang, Lennart Ljung,
"From structurally independent local LTI models to LPV model*",
Automatica,
84:
232-235, 2017.

Francesca Paola Carli, Tianshi Chen, Lennart Ljung,
"Maximum Entropy Kernels for System Identification",
IEEE Transactions on Automatic Control,
62(3):
1471-1477, 2017.

2016

Gianluigi Pillonetto, Tianshi Chen, Alessandro Chiuso, Giuseppe De Nicolao, Lennart Ljung,
"Regularized linear system identification using atomic, nuclear and kernel-based norms: The role of the stability constraint",
Automatica,
69:
137-149, 2016.

Tianshi Chen, Tohid Ardeshiri, Francesca P. Carli, Alessandro Chiuso, Lennart Ljung, Gianluigi Pillonetto,
"Maximum entropy properties of discrete-time first-order stable spline kernel",
Automatica,
66:
34-38, 2016.

2015

Alf Isaksson, Johan Sjöberg, David Tornqvist, Lennart Ljung, Manon Kok,
"Using horizon estimation and nonlinear optimization for grey-box identification",
Journal of Process Control,
30:
69-79, 2015.

2014

Tianshi Chen, Martin S. Andersen, Lennart Ljung, Alessandro Chiuso, Gianluigi Pillonetto,
"System Identification Via Sparse Multiple Kernel-Based Regularization Using Sequential Convex Optimization Techniques",
IEEE Transactions on Automatic Control,
59(11):
2933-2945, 2014.

Henrik Ohlsson, Tianshi Chen, Sina Khoshfetratpakazad, Lennart Ljung, S. Shankar Sastry,
"Scalable anomaly detection in large homogeneous populations",
Automatica,
50(5):
1459-1465, 2014.

Gianluigi Pillonetto, Francesco Dinuzzo, Tianshi Chen, Giuseppe De Nicolao, Lennart Ljung,
"Kernel methods in system identification, machine learning and function estimation: A survey",
Automatica,
50(3):
657-682, 2014.

2013

Lennart Ljung,
"Some Classical and Some New Ideas for Identification of Linear Systems",
Journal of Control, Automation and Electrical Systems,
24(1-2):
3-10, 2013.

Tianshi Chen, Lennart Ljung,
"Implementation of algorithms for tuning parameters in regularized least squares problems in system identification",
Automatica,
49(7):
2213-2220, 2013.

Henrik Ohlsson, Lennart Ljung,
"Identification of Switched Linear Regression Models using Sum-of-Norms Regularization",
Automatica,
49(4):
1045-1050, 2013.

Adrian Wills, Thomas Schön, Lennart Ljung, Brett Ninness,
"Identification of Hammerstein-Wiener Models",
Automatica,
49(1):
70-81, 2013.

2012

Tianshi Chen, Henrik Ohlsson, Lennart Ljung,
"On the Estimation of Transfer Functions, Regularizations and Gaussian Processes - Revisited",
Automatica,
48(8):
1525-1535, 2012.

Henrik Ohlsson, Fredrik Gustafsson, Lennart Ljung, Stephen Boyd,
"Smoothed State Estimates under Abrupt Changes using Sum-of-Norms Regularization",
Automatica,
48(4):
595-605, 2012.

2011

Lennart Ljung, Hakan Hjalmarsson, Henrik Ohlsson,
"Four Encounters with System Identification",
European Journal of Control,
17(5-6):
449-471, 2011.

Christian Lyzell, Torkel Glad, Martin Enqvist, Lennart Ljung,
"Difference Algebra and System Identification",
Automatica,
47(9):
1896-1904, 2011.

Xiao-Li Hu, Thomas Schön, Lennart Ljung,
"A General Convergence Result for Particle Filtering",
IEEE Transactions on Signal Processing,
59(7):
3424-3429, 2011.

Tianshi Chen, Thomas Schön, Henrik Ohlsson, Lennart Ljung,
"Decentralized Particle Filter with Arbitrary State Decomposition",
IEEE Transactions on Signal Processing,
59(2):
465-478, 2011.

2010

Henrik Ohlsson, Lennart Ljung, Stephen Boyd,
"Segmentation of ARX-Models using Sum-of-Norms Regularization",
Automatica,
46(6):
1107-1111, 2010.

Lennart Ljung,
"Perspectives on System Identification",
Annual Reviews in Control,
34(1):
1-12, 2010.

Lennart Ljung, Adrian Wills,
"Issues in Sampling and Estimating Continuous-Time Models with Stochastic Disturbances",
Automatica,
46(5):
925-931, 2010.

Jonas Gillberg, Lennart Ljung,
"Frequency Domain Identification of Continuous-Time Output Error Models: Part II: Non-Uniformly Sampled Data and B-Spline Output Approximation",
Automatica,
46(1):
11-18, 2010.

Jonas Gillberg, Lennart Ljung,
"Frequency Domain Identification of Continuous-Time Output Error Models: Part I: Uniformly Sampled Data and Frequency Function Approximation",
Automatica,
46(1):
1-10, 2010.

2009

Jiandong Wang, Qinghua Zhang, Lennart Ljung,
"Revisiting Hammerstein System Identification through the Two-Stage Algorithm for Bilinear Parameter Estimation",
Automatica,
45(11):
2627-2633, 2009.

Svante Björklund, Lennart Ljung,
"An Improved Phase Method for Time-Delay Estimation",
Automatica,
45(10):
2467-2470, 2009.

Jonas Gillberg, Lennart Ljung,
"Frequency-Domain Identification of Continuous-Time ARMA Models from Sampled Data",
Automatica,
45(6):
1371-1378, 2009.

2008

Ingela Lind, Lennart Ljung,
"Regressor and Structure Selection in NARX Models using a Structured ANOVA Approach",
Automatica,
44(2):
383-395, 2008.

Anna Hagenblad, Lennart Ljung, Adrian Wills,
"Maximum Likelihood Identification of Wiener Models",
Automatica,
44(11):
2697-2705, 2008.

Xiao-Li Hu, Thomas Schön, Lennart Ljung,
"A Basic Convergence Result for Particle Filtering",
IEEE Transactions on Signal Processing,
56(4):
1337-1348, 2008.

2007

Markus Gerdin, Thomas Schön, Torkel Glad, Fredrik Gustafsson, Lennart Ljung,
"On Parameter and State Estimation for Linear Differential-Algebraic Equations",
Automatica,
43(3):
416-425, 2007.

2006

Atsushi Fujimori, Lennart Ljung,
"Parameter Estimation of Polytopic Models for a Linear Parameter Varying Aircraft System",
Transactions of the Japan Society for Aeronautical and Space Sciences,
49(165):
129-136, 2006.

Atsushi Fujimore, Lennart Ljung,
"Model Identification of Linear Parameter Varying Aircraft Systems",
Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering,
220(4):
337-346, 2006.

2005

Lennart Ljung, A. Vicino,
"Guest editorial: Special issue on system identification",
IEEE Transactions on Automatic Control,
50(10),
2005.

S. Joe Qin, Weilu Lin, Lennart Ljung,
"A Novel Subspace Identification Approach with Enforced Causal Models",
Automatica,
41(12):
2043-2053, 2005.

Martin Enqvist, Lennart Ljung,
"Linear Approximations of Nonlinear FIR Systems for Separable Input Processes",
Automatica,
41(3):
459-473, 2005.

Ingela Lind, Lennart Ljung,
"Regressor Selection with the Analysis of Variance Method",
Automatica,
41(4):
693-700, 2005.

Jacob Roll, Alexander Nazin, Lennart Ljung,
"Nonlinear System Identification Via Direct Weight Optimization",
Automatica,
41(3):
475-490, 2005.

2004

Torkel Glad, Anders Helmersson, Lennart Ljung,
"Robustness Guarantees for Linear Control Designs with an Estimated Nonlinear Model Error Model",
International Journal of Robust and Nonlinear Control,
14(11):
959-970, 2004.

Jacob Roll, Alberto Bemporad, Lennart Ljung,
"Identification of Piecewise Affine Systems via Mixed-Integer Programming",
Automatica,
40(1):
37-50, 2004.

Liang-Liang Xie, Lennart Ljung,
"Variance Expressions for Spectra Estimated Using Auto-Regressions",
Journal of Econometrics,
118(1-2):
247-256, 2004.

AbstractKeywordsBiBTeX

2003

Fredrik Tjernström, Lennart Ljung,
"Variance Properties of a Two-Step ARX Estimation Procedure",
European Journal of Control,
9(4):
422-430, 2003.

Lennart Ljung, Wolfgang Reinelt,
"Robust Control of Identified Models with Mixed Parametric and Non-Parametric Uncertainties",
European Journal of Control,
9(4):
373-380, 2003.

2002

Lennart Ljung,
"Prediction Error Estimation Methods",
Circuits, systems, and signal processing,
21(1):
11-21, 2002.

Lennart Ljung,
"Recursive Identification Algorithms",
Circuits, systems, and signal processing,
21(1):
57-68, 2002.

Fredrik Tjernström, Lennart Ljung,
"Using the Bootstrap to Estimate the Variance in the Case of Undermodeling",
IEEE Transactions on Automatic Control,
47(2):
395-398, 2002.

Wolfgang Reinelt, Andrea Garulli, Lennart Ljung,
"Comparing Different Approaches to Model Error Modeling in Robust Identification",
Automatica,
38(5):
787-803, 2002.

Dietmar Bauer, Lennart Ljung,
"Some Facts about the Choice of the Weighting Matrices in Larimore Type of Subspace Algorithms",
Automatica,
38(5):
763-773, 2002.

Alexander V. Nazin, Lennart Ljung,
"Asymptotically Optimal Smoothing of Averaged LMS Estimates for Regression Parameter Tracking",
Automatica,
38(8):
1287-1293, 2002.

Fredrik Tjernström, Lennart Ljung,
"L2 Model Reduction and Variance Reduction",
Automatica,
38(9):
1517-1530, 2002.

Vincent Verdult, Lennart Ljung, Michel Verhaegen,
"Identification of Composite Local Linear State-Space Models using a Projected Gradient Search",
International Journal of Control,
75(16):
1385-1398, 2002.

2001

Lennart Ljung,
"Recursive Least Squares and Accelerated Convergence in Stochastic Approximation Schemes",
International journal of adaptive control and signal processing (Print),
15(2):
169-178, 2001.

Lennart Ljung,
"Estimating Linear Time-Invariant Models of Nonlinear Time-Varying Systems",
European Journal of Control,
7(2-3):
203-219, 2001.

Michel Gevers, Lennart Ljung, Paul Van den Hof,
"Asymptotic Variance Expressions for Closed-Loop Identification",
Automatica,
37(5):
781-786, 2001.

Alex S. Poznyak, Lennart Ljung,
"On-Line Identification and Adaptive Trajectory Tracking for Nonlinear Stochastic Continuous Time Systems using Differential Neural Networks",
Automatica,
37(8):
1257-1268, 2001.

Liang-Liang Xie, Lennart Ljung,
"Asymptotic Variance Expressions for Estimated Frequency Functions",
IEEE Transactions on Automatic Control,
46(12):
1887-1899, 2001.

2000

Lennart Ljung, Urban Forssell,
"Identification of Unstable Systems using Output Error and Box-Jenkins Model Structures",
IEEE Transactions on Automatic Control,
45(1):
131-147, 2000.

Lennart Ljung, Urban Forssell,
"A Projection Method for Closed-Loop Identification",
IEEE Transactions on Automatic Control,
45(11):
2101-2106, 2000.

Lennart Ljung, O.M. Boaghe, S.A. Billings,
"Letters to the editor on the paper 'dynamic wavelet and equivalent models' by O.M. Boaghe and S.A. Billings",
European Journal of Control,
6(3):
295-296, 2000.

Peter Lindskog, Lennart Ljung,
"Ensuring Monotonic Gain Characteristics in Estimated Models by Fuzzy Model Structures",
Automatica,
36(2):
311-317, 2000.

Urban Forssell, Lennart Ljung,
"Some Results on Optimal Experiment Design",
Automatica,
36(5):
749-756, 2000.

Tomas McKelvey, Anders Stenman, Fredrik Gustafsson, Daniel E. Rivera, Lennart Ljung,
"On Adaptive Smoothing of Empirical Transfer Function Estimates",
Control Engineering Practice,
8(11):
1309-1315, 2000.

1999

Niclas Bergman, Lennart Ljung, Fredrik Gustafsson,
"Terrain Navigation using Bayesian Statistics",
IEEE Control Systems,
19(3):
33-40, 1999.

Lennart Ljung, Urban Forssell,
"Closed-Loop Identification Revisited",
Automatica,
35(7):
1215-1241, 1999.

Urban Forssell, Lennart Ljung,
"An Alternative Motivation for the Indirect Approach to Closed-Loop Identification",
IEEE Transactions on Automatic Control,
44(11):
2206-2209, 1999.

1998

Martin Holmberg, Fredrik Gustafsson, Gunnar Hörnsten, Fredrik Winquist, Lennart E. Nilsson, Lennart Ljung, Ingemar Lundström,
"Bacteria classification based on feature extraction from sensor data",
Biotechnology Techniques,
12(4):
319-324, 1998.

1997

Lennart Ljung, Lei Guo,
"Classical Model Validation for Control Design Purposes",
Mathematical and Computer Modelling of Dynamical Systems,
3(1):
27-42, 1997.

Fredrik Gustafsson, Svante Gunnarsson, Lennart Ljung,
"Shaping Frequency-Dependent Time Resolution when Estimating Spectral Properties with Parametric Methods",
IEEE Transactions on Signal Processing,
45(4):
1025-1035, 1997.

Lei Guo, Lennart Ljung, Guan-Jun Wang,
"Necessary and Sufficient Conditions for Stability of LMS",
IEEE Transactions on Automatic Control,
42(6):
761-770, 1997.

Lennart Ljung, Lei Guo,
"The Role of Model Validation for Assessing the Size of the Unmodeled Dynamics",
IEEE Transactions on Automatic Control,
42(9):
1230-1239, 1997.

1996

Lennart Ljung, Tomas McKelvey,
"Subspace Identification from Closed Loop Data",
Signal Processing,
52(2):
209-215, 1996.

Lennart Ljung, Hüseyin Akçay, Tomas McKelvey,
"Subspace-based Identification of Infinite-dimensional Multivariable Systems from Frequency-response Data",
Automatica,
32(6):
885-902, 1996.

Tomas McKelvey, Hüseyin Akçay, Lennart Ljung,
"Subspace-Based Multivariable System Identification from Frequency Response Data",
IEEE Transactions on Automatic Control,
41(7):
960-979, 1996.

Lennart Ljung, Thomas Abrahamsson, Tomas McKelvey,
"Vibration Data Analysis for a Commercial Aircraft",
Automatica,
32(12):
1689-1700, 1996.

Steve S. Niu, Lennart Ljung, Åke Björk,
"Decomposition Methods for Solving Least-Squares Parameter Estimation",
IEEE Transactions on Signal Processing,
44(11):
2847-2852, 1996.

1995

Lei Guo, Lennart Ljung,
"Performance Analysis of General Tracking Algorithms",
IEEE Transactions on Automatic Control,
40(8):
1388-1402, 1995.

Lei Guo, Lennart Ljung,
"Exponential Stability of General Tracking Algorithms",
IEEE Transactions on Automatic Control,
40(8):
1376-1387, 1995.

Jonas Sjöberg, Qinghua Zhang, Lennart Ljung, Albert Benveniste, Bernard Deylon, Pierre-Yves Glorennec, Håkan Hjalmarsson, Anatoli Juditsky,
"Nonlinear Black-box Modeling in System Identification: a Unified Overview",
Automatica,
31(12):
1691-1724, 1995.

Jonas Sjöberg, Lennart Ljung,
"Overtraining, Regularization and Searching for Minimum with Application to Neural Nets",
International Journal of Control,
62(6):
1391-1407, 1995.

Peter Lindskog, Lennart Ljung,
"Tools for Semiphysical Modelling",
International journal of adaptive control and signal processing (Print),
9(6):
509-523, 1995.

Anatoli Juditsky, Håkan Hjalmarsson, Albert Benveniste, Bernard Deylon, Lennart Ljung, Jonas Sjöberg, Qinghua Zhang,
"Nonlinear Black-Box Models in System Identification: Mathematical Foundations",
Automatica,
31(12):
1725--1750, 1995.

1994

Lennart Ljung, Torkel Glad,
"On Global Identifiability for Arbitrary Model Parametrizations",
Automatica,
30(2):
265-276, 1994.

Lennart Ljung,
"System Identification in a MIC Perspective",
Modeling, Identification and Control,
15(3):
153-159, 1994.

1993

Bo Wahlberg, Lennart Ljung, Torsten Söderström,
"On Sampling of Continuous Time Stochastic Processes",
Control, Theory and Advanced Technology,
9(1):
99-112, 1993.

AbstractKeywordsBiBTeX

Lei Guo, Lennart Ljung, Pierre Priouret,
"Performance Analysis of the Forgetting Factor RLS Algorithms",
International journal of adaptive control and signal processing (Print),
7(6):
525-237, 1993.

1992

Lennart Ljung,
"O Tochnosti Modeli V Identifikatsi Sistem",
Tekhicheskaya Kibernetika,
6:
55-64, 1992.

KeywordsBiBTeX

Lennart Ljung,
"A Discussion of Model Accuracy in System Identification",
International journal of adaptive control and signal processing (Print),
6(3):
161-171, 1992.

Lennart Ljung, Bo Wahlberg,
"Asymptotic Properties of the Least-Squares Method for Estimating Transfer Functions and Disturbance Spectra",
Advances in Applied Probability,
24(2):
412-440, 1992.

AbstractKeywordsBiBTeX

Lennart Ljung, Bo Wahlberg,
"Hard Frequency-Domain Model Error Bounds from Least-Squares like Identification Techniques",
IEEE Transactions on Automatic Control,
37(7):
900-912, 1992.

Anders Skeppstedt, Lennart Ljung, Mille Millnert,
"Construction of Composite Models from Observed Data",
International Journal of Control,
55(1):
141-152, 1992.

Håkan Hjalmarsson, Lennart Ljung,
"Estimating Model Variance in the Case of Undermodeling",
IEEE Transactions on Automatic Control,
37(7):
1004-1008, 1992.

1991

Lennart Ljung, Pierre Priouret,
"A Result of the Mean Square Error Obtained using General Tracking Algorithms",
International journal of adaptive control and signal processing (Print),
5(4):
231-348, 1991.

Lennart Ljung, Pierre Priouret,
"Remarks on the Mean Square Tracking Error",
International journal of adaptive control and signal processing (Print),
5(6):
395-403, 1991.

Krister Forsman, Lennart Ljung, Mille Millnert, Anders Skeppstedt,
"Merging 'Reasoning' and Filtering in a Bayesian Framework - Some Sensitivity and Optimality Aspects",
International journal of adaptive control and signal processing (Print),
5(2):
93-106, 1991.

1990

Lennart Ljung, Svante Gunnarsson,
"Adaptation and Tracking in System Identification: A Survey",
Automatica,
26(1):
7-21, 1990.

1989

Ke Wang, Lennart Ljung,
"A Discussion of Adaptive Stabilization and Robust Adaptive Control",
Systems & control letters (Print),
12(1):
53-56, 1989.

Svante Gunnarsson, Lennart Ljung,
"Frequency Domain Tracking Characteristics of Adaptive Algorithms",
IEEE Transactions on Acoustics, Speech and Signal Processing,
37(7):
1072-1089, 1989.

1988

Lennart Ljung,
"Control Theory 1984-1986: A Progress Report from IFACS's Technical Commitee on Theory",
Automatica,
24(4):
573-583, 1988.

1987

Farhat Fnaiech, Lennart Ljung,
"Recursive Identification of Bilinear Systems",
International Journal of Control,
45(2):
453-470, 1987.

1986

Lennart Ljung,
"Error Propagation in Adaptation Algorithms with Poorly Exciting Signals",
Annales des télécommunications,
41(5-6):
322-327, 1986.

AbstractKeywordsBiBTeX

Bo Wahlberg, Lennart Ljung,
"Design Variables for Bias Distribution in Transfer Function Estimation",
IEEE Transactions on Automatic Control,
31(2):
134-144, 1986.

Michel Gevers, Lennart Ljung,
"Optimal Experimental Designs with Respect to the Intended Model Application",
Automatica,
22(5):
543-554, 1986.

1985

Lennart Ljung, Zhen-Dong Yuan,
"Asymptotic Properties of Black-Box Identification of Transfer Functions",
IEEE Transactions on Automatic Control,
30(6):
514-530, 1985.

Stefan Ljung, Lennart Ljung,
"Error Propagation Properties of Recursive Least Squares Adaptation Algorithms",
Automatica,
21(2):
157-167, 1985.

Göte Solbrand, Anders Ahlén, Lennart Ljung,
"Recursive Methods for Off-Line Identification",
International Journal of Control,
41(1):
177-191, 1985.

Zhen-Dong Yuan, Lennart Ljung,
"Uprejudiced Optimal Open Loop Input Design for Identification of Transfer Functions",
Automatica,
21(6):
697-708, 1985.

Thomas Kailath, Lennart Ljung,
"Explicit Strict Sense State-Space Realizations of Nonstationary Processes",
International Journal of Control,
42(5):
971-988, 1985.

Lennart Ljung,
"Asymptotic Variance Expressions for Identified Black-Box Transfer Function Models",
IEEE Transactions on Automatic Control,
30(9):
834-844, 1985.

Eva Trulsson, Lennart Ljung,
"Adaptive Control based on Explicit Criterion Minimization",
Automatica,
21(4):
385-399, 1985.

1984

KeywordsBiBTeX

Lennart Ljung,
"Analysis of Stochastic Gradient Algorithms for Linear Regression Problems",
IEEE Transactions on Information Theory,
30(2):
151-160, 1984.

1983

Thomas Kailath, Lennart Ljung, Martin Morf,
"Recursive Input-Output and State Space Solutions for Continuous-Time Linear Estimation Problems",
IEEE Transactions on Automatic Control,
28(9):
897-906, 1983.

1982

Thomas Kailath, Lennart Ljung,
"Two Filter Smooting Formulae by Diagonalization of the Hamiltonian Equations",
International Journal of Control,
36(4):
663-673, 1982.

A J M van Overbeek, Lennart Ljung,
"On-Line Structure Selection for Multivariable State-Space Models",
Automatica,
18(5):
529-543, 1982.

Lennart Ljung,
"Aspects on the System Identification Problem",
Signal Processing,
4(5-6):
445-456, 1982.

Stefan Ljung, Lennart Ljung,
"Fast Numerical Solution of Fredholm Integral Equations with Stationary Kernels",
BIT Numerical Mathematics,
22(1):
54-72, 1982.

1981

Lennart Ljung,
"Analysis of a general Recursive Prediction Error Identification Algorithm",
Automatica,
17(1):
89-99, 1981.

Lennart Ljung, Keith Glover,
"Frequency Domain versus Time Domain Methods in System Identification",
Automatica,
17(1):
71-86, 1981.

1980

Lennart Ljung, Peter E. Caines,
"Asymptotic Normality of Prediction Error Estimators for Approximate System Models",
Stochastics,
3(1-4):
29-46, 1980.

1979

Thomas Kailath, Bernard Levy, Lennart Ljung, Martin Morf,
"The Factorization and Representation of Operators in the Algebra Generated by Toeplitz Operators",
SIAM Journal on Applied Mathematics,
37(3):
467-484, 1979.

Benjaming Friedlander, Martin Morf, Thomas Kailath, Lennart Ljung,
"New Inversion Formulas for Matrices Classified in Terms of their Distance from Toeplitz Matrices",
Linear Algebra and its Applications,
27:
31-60, 1979.

Bernard Levy, Thomas Kailath, Lennart Ljung, Martin Morf,
"Fast Time-Invariant Implementations for Linear Least Squares Smoothing Filters",
IEEE Transactions on Automatic Control,
24(5):
770-775, 1979.

Lennart Ljung,
"Asymptotic Behaviour of the Extended Kalaman Filter as a Parameter Estimator for Linear Systems",
IEEE Transactions on Automatic Control,
24(1):
36-50, 1979.

1978

Lennart Ljung,
"Convergence Analysis of Parametric Identification Methods",
IEEE Transactions on Automatic Control,
23(5):
770-783, 1978.

Lennart Ljung, David Falconer,
"Application of Fast Kalman Estimation to Adaptive Equalization",
IEEE Transactions on Communications,
26(10):
1439-1446, 1978.

B Friedlander, Thomas Kailath, Martin Morf, Lennart Ljung,
"Extended Levinson and Chandrasekhar Equations for General Discrete-Time Linear Estimation Problems",
IEEE Transactions on Automatic Control,
23(4):
653-659, 1978.

Thomas Kailath, Bernard C. Levy, Lennart Ljung, Martin Morf,
"Fast Time-Invariant Implementations of Gaussian Signal Detectors",
IEEE Transactions on Information Theory,
24(4):
469-477, 1978.

Lennart Ljung,
"Strong Convergence of a Stochastic Approximation Algorithm",
Annals of Statistics,
6(3):
680-696, 1978.

Torsten Söderström, Lennart Ljung, Ivar Gustavsson,
"A Theoretical Analysis of Recursive Identification",
Automatica,
14(3):
231-244, 1978.

Lennart Ljung,
"Convergence of an Adaptive Filter Algorithm",
International Journal of Control,
27(5):
673-693, 1978.

Lennart Ljung, Martin Morf, David Falconer,
"Fast Calculation of Gain Matrices for Recursive Estimation Schemes",
International Journal of Control,
27(1):
1-19, 1978.

1977

Karl Johan Åström, U Borisson, Lennart Ljung, Björn Wittenmark,
"Theory and Applications of Self Tuning Regulators",
Automatica,
13(5):
457-476, 1977.

Lennart Ljung,
"On Positive Real Transfer Functions and the Convergence of some Recursive Schemes",
IEEE Transactions on Automatic Control,
22(4):
539-551, 1977.

Lennart Ljung,
"Analysis of Recursive Stochastic Algorithms",
IEEE Transactions on Automatic Control,
22(4):
551-575, 1977.

Lennart Ljung, Thomas Kailath,
"Efficient Change of Initial Conditions , Dual Chandrasekhar Equations, and some Applications",
IEEE Transactions on Automatic Control,
22(3):
443-447, 1977.

Ivar Gustavsson, Lennart Ljung, Torsten Söderström,
"Identification of Processes in Closed Loop-Identifiability and Accuracy Aspects",
Automatica,
13(1):
59-75, 1977.

1976

Torsten Söderström, Lennart Ljung, Ivar Gustavsson,
"Identifiability Conditions for Linear Multivariable Systems Operating under Feedback",
IEEE Transactions on Automatic Control,
21(6):
837-840, 1976.

Lennart Ljung,
"Consistency of the Least Squares Identification Method",
IEEE Transactions on Automatic Control,
21(5):
779-781, 1976.

Lennart Ljung, Thomas Kailath,
"Backwards Markovian Models for Second Order Stochastic Processes",
IEEE Transactions on Information Theory,
22(4):
488-491, 1976.

## Books

2024

Torkel Glad, Lennart Ljung, Martin Enqvist,
"Reglerteknik: grundläggande teori",
Studentlitteratur AB, Lund,
2024.

AbstractKeywordsBiBTeX

2021

Lennart Ljung, Torkel Glad, Anders Hansson,
"Modeling and identification of dynamic systems",
Studentlitteratur, Lund,
2021.

AbstractKeywordsBiBTeX

2010

Fredrik Gustafsson, Lennart Ljung, Mille Millnert,
"Signal processing",
Studentlitteratur, Lund,
2010.

AbstractKeywordsBiBTeX

1999

Lennart Ljung,
"System identification: theory for the user",
Prentice-Hall, Upper Saddle River, NJ, USA,
1999.

KeywordsBiBTeX

1994

Lennart Ljung, Torkel Glad,
"Modeling of Dynamic Systems",
PTR Prentice Hall, Englewood Cliffs,
1994.

AbstractKeywordsBiBTeX

1992

Lennart Ljung, Georg Pflug, Harro Walk,
"Stochastic Approximation and Optimization of Random Systems",
Birkhäuser Verlag, Basel ; Boston,
No. 17,
1992.

AbstractKeywordsBiBTeX

1987

Lennart Ljung,
"System identification: theory for the user",
Prentice-Hall, Englewood Cliffs, NJ, USA,
1987.

AbstractKeywordsBiBTeX

1983

Lennart Ljung, Torsten Söderström,
"Theory and Practice of Recursive Identification",
MIT Press, Cambridge,
No. 4,
1983.

AbstractKeywordsBiBTeX

1981

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## Book chapters

2010

Adrian Wills, Lennart Ljung,
"Wiener System Identification Using the Maximum Likelihood Method",
Block-Oriented Nonlinear System Identification, Lecture Notes In Control and Information Sciences,
No. 404,
89-110, 2010.

Henrik Ohlsson, Lennart Ljung,
"Weight Determination by Manifold Regularization",
Distributed Decision-Making and Control, Lecture Notes in Control and Information Sciences,
No. 417,
195-214, 2010.

Henrik Ohlsson, Lennart Ljung,
"Semi-Supervised Regression and System Identification",
Three Decades of Progress in Systems and Control,
343-360, 2010.

2007

Markus Gerdin, Torkel Glad, Lennart Ljung,
"Global Identifiability of Complex Models, Constructed from Simple Submodels",
Modeling, Estimation and Control, Lecture Notes in Control and Information Sciences,
No. 364,
123-133, 2007.

2006

Lennart Ljung,
"Frequency Domain versus Time Domain Methods in System Identification - Revisited",
Control of Uncertain Systems, Lecture Notes in Control and Information Science,
No. 329,
277-291, 2006.

2004

Lennart Ljung,
"Practical Issues of System Identification",
Control Systems, Robotics and Automation,
345-368, 2004.

AbstractKeywordsBiBTeX

2003

Lennart Ljung,
"Linear System Identification as Curve Fitting",
Directions in Mathematical Systems Theory and Optimization, Lecture Notes in Control and Information Sciences,
No. 286,
203-215, 2003.

1999

Lennart Ljung,
"System identification",
Wiley encyclopedia of electrical and electronics engineering. Vol. 21, Su-Th,
263-282, 1999.

1998

AbstractKeywordsBiBTeX

1995

Lennart Ljung,
"Building Models from Frequency Domain Data",
Adaptive Control, Filtering and Signal Processing, The IMA Volumes in Mathematics and its Applications,
No. 74,
229-240, 1995.

Lennart Ljung, Jonas Sjöberg, Håkan Hjalmarsson,
"On Neural Network Model Structures in System Identification",
Proceedings from the NATO Advanced Summer Institute "From Identification to Learning",
162-195, 1995.

KeywordsBiBTeX

1993

Lennart Ljung,
"General Structure of Adaptive Algorithms: Adaptation and Tracking",
Adaptive System Identification and Signal Processing Algorithms,
58-83, 1993.

AbstractKeywordsBiBTeX

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1987

Lennart Ljung,
"Stochastic Adaptive Control Algorithms Convergence Analysis: Ordinary Differential Equation Approach",
Systems and Control Encyclopedia,
4602-4603, 1987.

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Lennart Ljung,
"Recursive Stochastic Algorithms: Ordinary Differential Equation Method",
Systems and Control Encyclopedia,
3991-3994, 1987.

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Lennart Ljung,
"Identification: Time-Domain Methods",
Systems and Control Encyclopedia,
2314-2320, 1987.

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Lennart Ljung,
"Identification: Recursive Methods",
Systems and Control Encyclopedia,
2310-2314, 1987.

KeywordsBiBTeX

Lennart Ljung,
"Identification: Maximum Likelihood Method",
Systems and Control Encyclopedia,
2284-2287, 1987.

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Lennart Ljung,
"Identification: Least Squares Method",
Systems and Control Encyclopedia,
2278-2284, 1987.

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Lennart Ljung,
"Identification: Asymptotic Theory",
Systems and Control Encyclopedia,
2235-2239, 1987.

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Lennart Ljung,
"Adaptive Controllers: Convergence Analysis",
Systems and Control Encyclopedia,
55-60, 1987.

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Lennart Ljung,
"Adaptive Control: Positive-Real Condition",
Systems and Control Encyclopedia,
51-54, 1987.

KeywordsBiBTeX

Lennart Ljung,
"Adaptation using Recursive Parameter Estimation",
Advances in Statistical Signal Processing, Vol. 1,
287-327, 1987.

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Lennart Ljung,
"Parametric Methods for Identification of Transfer Functions of Linear Systems",
System identification and adaptive control. Part 2 of 3, Control and dynamic systems,
No. 26,
87-118, 1987.

1985

Lennart Ljung,
"Estimation of Parameters in Dynamical Systems",
Handbook of Statistics, Time Series in the Time Domain,
189-211, 1985.

KeywordsBiBTeX

Lennart Ljung,
"System Identification",
Uncertainty and Control, Lecture Notes in Control and Information Sciences,
No. 70,
48-83, 1985.

Lennart Ljung,
"Recursive Techniques for Identifying Dynamic Systems",
On-line process simulation techniques in industrial control,
1-10, 1985.

KeywordsBiBTeX

1981

Ivar Gustavsson, Lennart Ljung, Torsten Söderström,
"Choice and Effect of Different Feedback Configurations",
Trends and Progress in System Identification, IFAC Series for Graduates, Research Workers & Practising Engineers,
No. 1,
367-388, 1981.

KeywordsBiBTeX

1978

Thomas Kailath, Lennart Ljung, Martin Morf,
"Generalized Krein-Levinson Equations for Efficient Calculation of Fredholm Resolvents of Non-Displacement Kernels",
Topics in Functional Analysis, Advances in mathematics. Supplementary studies,
No. 3,
169-184, 1978.

KeywordsBiBTeX

1977

Lennart Ljung,
"Convergence Analysis of Recursive, Stochastic Algorithms",
Analyse et contrôle de systèmes, Séminaires IRIA,
127-133, 1977.

KeywordsBiBTeX

1976

Lennart Ljung,
"On the Consistency of Prediction Error Identification Methods",
System identification, Mathematics in Science and Engineering,
No. 126,
121-164, 1976.

Lennart Ljung,
"On Consistency and Identifiability",
Stochastic Systems, Mathematical Programming Studies,
No. 5,
169-190, 1976.

## Conference papers

2022

Yue Ju, Tianshi Chen, Biqiang Mu, Lennart Ljung,
"On Convergence in Distribution of Steins Unbiased Risk Hyper-parameter Estimator for Regularized System Identification",
2022 41ST CHINESE CONTROL CONFERENCE (CCC), Chinese Control Conference,
1491-1496, 2022.

2021

Yue Ju, Tianshi Chen, Biqiang Mu, Lennart Ljung,
"On Asymptotic Distribution of Generalized Cross Validation Hyper-parameter Estimator for Regularized System Identification",
2021 60TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
1598-1602, 2021.

Daniel Gedon, Niklas Wahlstrom, Thomas B. Schon, Lennart Ljung,
"Deep State Space Models for Nonlinear System Identification",
IFAC PAPERSONLINE,
481-486, 2021.

Khaled F. Aljanaideh, Debraj Bhattacharjee, Rajiv Singh, Lennart Ljung,
"New Features in the System Identification Toolbox - Rapprochements with Machine Learning",
IFAC PAPERSONLINE,
369-373, 2021.

Xian Yu, Tianshi Chen, Biqiang Mu, Lennart Ljung,
"Kernel-based Regularized Iterative Learning Control of Repetitive Linear Time-varying Systems",
IFAC PAPERSONLINE,
738-743, 2021.

J. Schoukens, D. Westwick, Lennart Ljung, T. Dobrowiecki,
"Nonlinear System Identification with Dominating Output Noise - A Case Study on the Silverbox",
IFAC PAPERSONLINE,
679-684, 2021.

2020

Yue Ju, Tianshi Chen, Biqiang Mu, Lennart Ljung,
"On the Influence of Ill-conditioned Regression Matrix on Hyper-parameter Estimators for Kernel-based Regularization Methods",
2020 59TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
300-305, 2020.

Lennart Ljung, Carl Andersson, Koen Tiels, Thomas B. Schon,
"Deep Learning and System Identification",
IFAC PAPERSONLINE,
1175-1181, 2020.

2019

Rajiv Singh, Mario Sznaier, Lennart Ljung,
"An Atomic Norm Minimization Framework for Identification of Parameter Varying Nonlinear ARX Models",
IFAC PAPERSONLINE, IFAC papers online,
2019.

2018

Biqiang Mu, Tianshi Chen, Lennart Ljung,
"Asymptotic Properties of Hyperparameter Estimators by Using Cross-Validations for Regularized System Identification",
2018 IEEE CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
644-649, 2018.

Rajiv Singh, Mario Sznaier, Lennart Ljung,
"A Rank Minimization Formulation for Identification of Linear Parameter Varying Models",
IFAC PAPERSONLINE, IFAC papers online,
74-80, 2018.

Tianshi Chen, Martin S. Andersen, Biqiang Mu, Feng Yin, Lennart Ljung, S. Joe Qin,
"Regularized LTI System Identification with Multiple Regularization Matrix",
18th IFAC Symposium on System Identification (SYSID), Proceedings, IFAC papers online,
180-185, 2018.

Biqiang Mu, Tianshi Chen, Lennart Ljung,
"Asymptotic Properties of Generalized Cross Validation Estimators for Regularized System Identification",
18th IFAC Symposium on System Identification (SYSID), Proceedings, IFAC papers online,
203-208, 2018.

Suat Gumussoy, Ahmet Arda Ozdemir, Tomas McKelvey, Lennart Ljung, Mladen Gibanica, Rajiv Singh,
"Improving Linear State-Space Models with Additional NIterations",
18th IFAC Symposium on System Identification (SYSID), Proceedings, IFAC papers online,
341-346, 2018.

Lennart Ljung, Ahmet Arda Ozdemir, Rajiv Singh,
"Online Features in the MATLAB (R) System Identification Toolbox (TM)",
18th IFAC Symposium on System Identification (SYSID), Proceedings, IFAC papers online,
700-705, 2018.

Adrian Wills, Chengpu Yu, Lennart Ljung, Michel Verhaegen,
"Affinely Parametrized State-space Models: Ways to Maximize the Likelihood Function",
18th IFAC Symposium on System Identification (SYSID), Proceedings, IFAC papers online,
718-723, 2018.

2017

Biqiang Mu, Tianshi Chen, Lennart Ljung,
"Tuning of Hyperparameters for FIR models - an Asymptotic Theory",
IFAC PAPERSONLINE, IFAC Papersonline,
2818-2823, 2017.

Chengpu Yu, Lennart Ljung, Michel Verhaegen,
"Gray Box Identification Using Difference of Convex Programming",
IFAC PAPERSONLINE, IFAC PAPERSONLINE,
9462-9467, 2017.

Zuogong Yue, Johan Thunberg, Wei Pan, Lennart Ljung, Jorge Goncalves,
"Linear Dynamic Network Reconstruction from Heterogeneous Datasets",
IFAC PAPERSONLINE, IFAC Papers online,
10586-10591, 2017.

Biqiang Mu, Tianshi Chen, Lennart Ljung,
"On the Input Design for Kernel-based Regularized LTI System Identification: Power-constrained Inputs",
2017 IEEE 56TH ANNUAL CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
2017.

Chengpu Yu, Jie Chen, Lennart Ljung, Michel Verhaegen,
"Subspace Identification of Continuous-Time Models Using Generalized Orthonormal Bases",
2017 IEEE 56TH ANNUAL CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
2017.

Zuogong Yue, Johan Thunberg, Lennart Ljung, Jorge Goncalves,
"On Definition and Inference of Nonlinear Boolean Dynamic Networks",
2017 IEEE 56TH ANNUAL CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
2017.

2016

Tianshi Chen, Gianluigi Pillonetto, Alessandro Chiuso, Lennart Ljung,
"Continuous-time DC kernel - a stable generalized first order spline kernel",
2016 IEEE 55TH CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
4647-4652, 2016.

Valentin Pascu, Hugues Garnier, Lennart Ljung, Alexandre Janot,
"Developments towards Formalizing a Benchmark for Continuous-time Model Identification",
2016 IEEE 55TH CONFERENCE ON DECISION AND CONTROL (CDC), IEEE Conference on Decision and Control,
7171-7176, 2016.

2015

Wei Pan, Ye Yuan, Lennart Ljung, Jorge Goncalves, Guy-Bart Stan,
"Identifying Biochemical Reaction Networks From Heterogeneous Datasets",
2015 54TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC),
2525-2530, 2015.

Tianshi Chen, Gianluigi Pillonetto, Alessandro Chiuso, Lennart Ljung,
"Spectral analysis of the DC kernel for regularized system identification",
2015 54TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC),
4017-4022, 2015.

2013

Sina Khoshfetrat Pakazad, Henrik Ohlsson, Lennart Ljung,
"Sparse Control Using Sum-of-norms Regularized Model Predictive Control",
52nd IEEE Conference on Decision and Control (CDC 2013), 10-13 December 2013, Firenze, Italy,
2013.

Gianluigi Pillonetto, Tianshi Chen, Lennart Ljung,
"Kernel-based model order selection for linear system identification",
Proc. 11th IFAC International Workshop on Adaptation and Learning in Control and Signal Processing, ALCOSP13, IFAC Proceedings Volumes,
257-262, 2013.

Lennart Ljung, Tianshi Chen,
"What can regularization offer for estimation of dynamical systems?",
11th IFAC International Workshop on Adaptation and Learning in Control and Signal Processing, ALCOSP13,
1-8, 2013.

Lennart Ljung, Tianshi Chen,
"Convexity Issues in System Identification",
10th IEEE International Conference on Control & Automation,
1-9, 2013.

2012

Tianshi Chen, Lennart Ljung, Martin Andersen, Alessandro Chiuso, Francesca Carli, Gianluigi Pillonetto,
"Sparse multiple kernels for impulse response estimation with majorization minimization algorithms",
Decision and Control (CDC), 2012,
1500-1505, 2012.

Tianshi Chen, Lennart Ljung, Yanlong Zhao,
"Impulse Response Estimation with Binary Measurements: A Regularized FIR Model",
Proceedings of the 16th IFAC Symposium on System Identification,
113-118, 2012.

Lennart Ljung, Rajiv Singh,
"Version 8 of the MatLab System Identification Toolbox",
Proceedings of the 16th IFAC Symposium on Sytem Identification,
1826-1831, 2012.

Henrik Ohlsson, Tianshi Chen, Sina Khoshfetrat Pakazad, Lennart Ljung, Shankar Sastry,
"Distributed Change Detection",
Proceedings of the 16th IFAC Symposium on System Identification,
77-82, 2012.

2011

Diego S. Cassasco, Lennart Ljung, Graham C. Goodwin, Juan C. Agüero,
"On the Accuracy of Parameter Estimation for Continuous Time Nonlinear Systems from Sampled Data",
Proceedings of the 50th IEEE Conference on Decision and Control,
4308-4311, 2011.

Henrik Ohlsson, Lennart Ljung,
"A Convex Approach to Subspace Clustering",
Proceedings of the 50th IEEE Conference on Decision and Control,
1467-1472, 2011.

Tianshi Chen, Henrik Ohlsson, Graham C. Goodwin, Lennart Ljung,
"Kernel Selection in Linear System Identification: Part II: A Classical Perspective",
Proceedings of the 50th IEEE Conference on Decision and Control,
4326-4331, 2011.

Tillmann Falck, Henrik Ohlsson, Lennart Ljung, Johan A.K. Suykens, Bart De Moor,
"Segmentation of Time Series from Nonlinear Dynamical Systems",
Proceedings of the 18th IFAC World Congress,
13209-13214, 2011.

Adrian Wills, Thomas Schön, Lennart Ljung, Brett Ninness,
"Blind Identification of Wiener Models",
Proceedings of the 18th IFAC World Congress,
5597-5602, 2011.

Henrik Ohlsson, Lennart Ljung,
"Identification of Piecewise Affine Systems Using Sum-of-Norms Regularization",
Proceedings of the 18th IFAC World Congress,
6640-6645, 2011.

Fredrik Lindsten, Henrik Ohlsson, Lennart Ljung,
"Clustering using Sum-of-Norms Regularization: With Application to Particle Filter Output Computation",
Proceedings of the 2011 IEEE Statistical Signal Processing Workshop,
201-204, 2011.

2010

Lennart Ljung,
"Approaches to Identification of Nonlinear Systems",
Proceedings of the 29th Chinese Control Conference,
2010.

AbstractKeywordsBiBTeX

Tianshi Chen, Thomas Schön, Henrik Ohlsson, Lennart Ljung,
"Decentralization of Particle Filters Using Arbitrary State Decomposition",
Proceedings of the 49th IEEE Conference on Decision and Control,
7383-7388, 2010.

Henrik Ohlsson, Fredrik Gustafsson, Lennart Ljung, Stephen Boyd,
"State Smoothing by Sum-of-Norms Regularization",
Proceedings of the 49th Conference on Decision and Control,
2880-2885, 2010.

Tianshi Chen, Henrik Ohlsson, Lennart Ljung,
"On the Estimation of Transfer Functions, Regularizations and Gaussian Processes – Revisited",
Proceedings of the 18th IFAC World Congress,
2303-2308, 2010.

Henrik Ohlsson, Fredrik Gustafsson, Lennart Ljung, Stephen Boyd,
"Trajectory Generation Using Sum-of-Norms Regularization",
Proceedings of the 49th IEEE Conference on Decision and Control,
540-545, 2010.

2009

Alf Isaksson, David Törnqvist, Johan Sjöberg, Lennart Ljung,
"Grey-Box Identification Based on Horizon Estimation and Nonlinear Optimization",
Proceedings of the 41st ISCIE International Symposium on Stochastic Systems,
1-6, 2009.

AbstractKeywordsBiBTeX

Lennart Ljung, Henrik Ohlsson, Maite Bauwens,
"On Manifolds, Climate Reconstruction and Bivalve Shells",
Proceedings of the 48th IEEE Conference on Decision and Control,
5738-5743, 2009.

Henrik Ohlsson, Lennart Ljung,
"Gray-Box Identification for High-Dimensional Manifold Constrained Regression",
Proceedings of the 15th IFAC Symposium on System Identification,
1292-1297, 2009.

Lennart Ljung, Qinghua Zhang, Jiandong Wang,
"Optimality Analysis of the Two-Stage Algorithm Hammerstein System Identification",
Proceedings of the 15th IFAC Symposium on System Identification,
320-325, 2009.

Lennart Ljung, Johan Schoukens, Johan Suykens,
"Wiener-Hammerstein Benchmark",
Proceedings of the 15th IFAC Symposium on System Identification,
2009.

AbstractKeywordsBiBTeX

Lennart Ljung, Qinghua Zhang, Rajiv Singh, Peter Lindskog, Anatoli Iouditski,
"Developments in the Mathworks System Identification Toolbox",
Proceedings of the 15th IFAC Symposium on System Identification,
522-527, 2009.

Lennart Ljung,
"Experiments with Identification of Continuous Time Models",
Proceedings of the 15th IFAC Symposium on System Identification,
1175-1180, 2009.

Lennart Ljung,
"Minimax Confidence Intervals for Pointwise Nonparametric Regression Estimation",
Proceedings of the 15th IFAC Symposium on System Identification,
2009.

AbstractKeywordsBiBTeX

Roger Larsson, Zoran Sjanic, Martin Enqvist, Lennart Ljung,
"Direct Prediction-Error Identification of Unstable Nonlinear Systems Applied to Flight Test Data",
Proceedings of the 15th IFAC Symposium on System Identification, IFAC-PapersOnLine,
Vol. 42(10),
144-149, 2009.

Christian Lyzell, Martin Enqvist, Lennart Ljung,
"Handling Certain Structure Information in Subspace Identification",
Proceedings of the 15th IFAC Symposium on System Identification, IFAC-PapersOnLine,
Vol. 42(10),
90-95, 2009.

Christian Lyzell, Torkel Glad, Martin Enqvist, Lennart Ljung,
"Identification Aspects of Ritt's Algorithm for Discrete-Time Systems",
Proceedings of the 15th IFAC Symposium on System Identification, IFAC-PapersOnLine,
Vol. 42(10),
681-686, 2009.

2008

Christian Lyzell, Jacob Roll, Lennart Ljung,
"The Use of Nonnegative Garrote for Order Selection of ARX Models",
Proceedings of the 47th IEEE Conferance on Decision and Control,
1974-1979, 2008.

Inger Klein, Lennart Ljung, Svante Gunnarsson, Lars Nielsen,
"Framstående utbildningsmiljö - Hur blir man det?",
Nätverket Ingenjörsutbildningarnas Utvecklingskonferens 2008,
2008.

AbstractKeywordsBiBTeX

Lennart Ljung, Anna Hagenblad, Adrian Wills,
"Maximum Likelihood Identification of Wiener Models",
Proceedings of the 17th IFAC World Congress,
2714-2719, 2008.

Lennart Ljung,
"Perspectives on System Identification",
Proceedings of the 17th IFAC World Congress,
7172-7184, 2008.

Henrik Ohlsson, Jacob Roll, Anders Brun, Hans Knutsson, Mats Andersson, Lennart Ljung,
"Direct Weight Optimization Applied to Discontinuous Functions",
47th IEEE Conference on Decision and Control, 2008. CDC 2008, IEEE Conference on Decision and Control. Proceedings,
117-122, 2008.

Lennart Ljung, Adrian Wills,
"Issues in Sampling and Estimating Continuous-Time Models with Stochastic Disturbances",
Proceedings of the 17th IFAC World Congress,
14360-14365, 2008.

Xiao-Li Hu, Lennart Ljung,
"New Convergence Results for Least Squares Identification Algorithm",
Proceedings of the 17th IFAC World Congress,
5030-5035, 2008.

Henrik Ohlsson, Jacob Roll, Lennart Ljung,
"Manifold-Constrained Regressors in System Identification",
Proceedings of the 47th IEEE Conference on Decision and Control,
1364-1369, 2008.

Alexander Nazin, Jacob Roll, Lennart Ljung, Ion Grama,
"Direct Weight Optimization in Statistical Estimation and System Identification",
Proceedings of the 7th International Conference on System Identification and Control Problems,
2008.

AbstractKeywordsBiBTeX

2007

Henrik Ohlsson, Jacob Roll, Torkel Glad, Lennart Ljung,
"Using Manifold Learning for Nonlinear System Identification",
Proceedings of the 7th IFAC Symposium on Nonlinear Control Systems,
170-175, 2007.

Alexander Nazin, Jacob Roll, Lennart Ljung,
"Direct Weight Optimization in Nonlinear Function Estimation and System Identification",
Proceedings of the 6th International Conference on System Identification and Control Problems (SICPRO '07),
2007.

AbstractKeywordsBiBTeX

Xiao-Li Hu, Thomas Schön, Lennart Ljung,
"A Robust Particle Filter for State Estimation - with Convergence Results",
Proceedings of the 46th IEEE Conference on Decision and Control,
312-317, 2007.

Xiao-Li Hu, Thomas Schön, Lennart Ljung,
"A Basic Convergence Result for Particle Filtering",
Proceedings of the 7th IFAC Symposium on Nonlinear Control Systems,
288-293, 2007.

2006

Lennart Ljung, Jonas Gillberg,
"Frequency-Domain Identification of Continuous-Time Output Error Models from Non-Uniformly Sampled Data",
Proceedings of the 14th IFAC Symposium on System Identification,
214-218, 2006.

Lennart Ljung, Qinghua Zhang, Anatoli Iouditski,
"Identification of Wiener System with Monotonous Nonlinearity",
Proceedings of the 14th IFAC Symposium on System Identification,
166-171, 2006.

Alexander Nazin, Jacob Roll, Lennart Ljung,
"Direct Weight Optimization for Approximately Linear Functions: Optimality and Design",
Proceedings of the 14th IFAC Symposium on System Identification,
796-801, 2006.

Jacob Roll, Ingela Lind, Lennart Ljung,
"Connections Between Optimisation-Based Regressor Selection and Analysis of Variance",
Proceedings of the 45th IEEE Conference on Decision and Control,
4907-4914, 2006.

Jacob Roll, Ingela Lind, Lennart Ljung,
"Connections Between Optimisation-Based Regressor Selection and Analysis of Variance",
Proceedings of Reglermöte 2006,
2006.

AbstractKeywordsBiBTeX

Lennart Ljung, Qinghua Zhang, Peter Lindskog, Anatoli Iouditski, Rajiv Singh,
"An Integrated System Identification Toolbox for Linear and Nonlinear Models",
Proceedings of the 14th IFAC Symposium on System Identification,
931-936, 2006.

Lennart Ljung,
"Some Aspects on Nonlinear System Identification",
Proceedings of the 14th IFAC Symposium on System Identification,
553-564, 2006.

Lennart Ljung,
"Identification of Nonlinear Systems. Plenary Paper",
Proceedings of the 9th International Conference on Control, Automation, Robotics and Vision,
2006.

AbstractKeywordsBiBTeX

2005

Lennart Ljung, Weilu Lin, S. Joe Qin,
"Comparison of Subspace Identification Methods for Systems Operating in Closed Loop",
Proceedings of the 16th IFAC World Congress,
82-82, 2005.

Lennart Ljung, Jonas Gillberg,
"Frequency-Domain Identification of Continuous-Time Output Error Models from Sampled Data",
Proceedings of 16th IFAC World Congress,
15-15, 2005.

Jonas Gillberg, Lennart Ljung,
"Frequency-Domain Identification of Continuous-Time ARMA Models from Sampled Data",
Proceedings of 16th IFAC World Congress,
37-37, 2005.

Lennart Ljung, David Lindgren,
"Nonlinear Dynamics Identified by Multi-Index Models",
Proceedings of the 16th IFAC World Congress,
32-32, 2005.

Jimmy Johansson, David Lindgren, Matthew Cooper, Lennart Ljung,
"Interactive Visualization as a Tool for Analysing Time-Varying and Non-Linear Systems",
Proceedings of the 16th IFAC World Congress,
95-95, 2005.

Torkel Glad, Anders Helmersson, Martin Enqvist, Lennart Ljung,
"Controllers for Amplitude Limited Model Error Models",
Proceedings of the 16th IFAC World Congress, IFAC-PapersOnLine,
Vol. 38(1),
662-662, 2005.

Jacob Roll, Martin Enqvist, Lennart Ljung,
"Consistent Nonparametric Estimation of NARX Systems Using Convex Optimization",
Proceedings of the 44th IEEE Conference on Decision and Control and European Control Conference,
3129-3134, 2005.

Markus Gerdin, Torkel Glad, Lennart Ljung,
"Well-Posedness of Filtering Problems for Stochastic Linear DAE Models",
Proceedings of the 44th IEEE Conference on Decision and Control and European Control Conference,
350-355, 2005.

Jacob Roll, Alexander Nazin, Lennart Ljung,
"A General Direct Weight Optimization Framework for Nonlinear System Identification",
Proceedings of the 16th IFAC World Congress,
29-29, 2005.

2004

Lennart Ljung, Jacob Roll, Anatoli Iouditski, Nazin Alexander,
"Adaptive DWO Estimator of a Regression Function",
Proceedings of the 2004 IFAC Symposium on Nonlinear Control Systems,
2004.

AbstractKeywordsBiBTeX

Lennart Ljung, Weilu Lin, S. Joe Qin,
"On Consistency of Closed-Loop Subspace Identification with Innovation Estimation",
Proceedings of the 43rd IEEE Conference on Decision and Control,
2195-2200, 2004.

David Lindgren, Lennart Ljung,
"Nonlinear Dynamics Isolated by Delaunay Triangulation Criteria",
Proceedings of the 43rd IEEE Conference on Decision and Control,
3862-3867 Vol.4, 2004.

Lennart Ljung,
"Challenges of non-linear identification",
FIRST INTERNATIONAL SYMPOSIUM ON CONTROL, COMMUNICATIONS AND SIGNAL PROCESSING,
539-539, 2004.

Martin Enqvist, Lennart Ljung,
"LTI Approximations of Slightly Nonlinear Systems: Some Intriguing Examples",
Proceedings of the 6th IFAC Symposium on Nonlinear Control Systems,
639-, 2004.

AbstractKeywordsBiBTeX

Martin Enqvist, Lennart Ljung,
"LTI Approximations of Slightly Nonlinear Systems: Some Intriguing Examples",
Proceedings of Reglermöte 2004,
2004.

AbstractKeywordsBiBTeX

Lennart Ljung, Qinghua Zhang, Peter Lindskog, Alexander Juditsky,
"Modeling a Non-Linear Electric Circuit with Black Box and Grey Box Models",
Proceedings of the 2004 IFAC Symposium on Nonlinear Control Systems,
2004.

KeywordsBiBTeX

Qinghua Zhang, Lennart Ljung,
"Multiple Steps Prediction with Nonlinear ARX Models",
Proceedings of the 2004 IFAC Symposium on Nonlinear Control Systems,
2004.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Integrated Frequency-Time Domain Tools for System Identification",
Proceedings of the 2004 American Control Conference,
5594-5599, 2004.

AbstractKeywordsBiBTeX

Lennart Ljung,
"State of the Art in Linear System Identification: Time and Frequency Domain Methods",
Proceedings of the 2004 American Control Conference,
650-660 vol.1, 2004.

AbstractKeywordsBiBTeX

Jimmy Johansson, David Lindgren, Matthew Cooper, Lennart Ljung,
"Interactive Analysis of Time-Varying Systems Using Volume Graphics",
Proceedings of the 43rd IEEE Conference on Decision and Control,
5083-5087, 2004.

2003

Lennart Ljung, Ingela Lind,
"Structure Selection with ANOVA: Local Linear Models",
Proceedings of the 13th IFAC Symposium on System Identification,
51-56, 2003.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Version 6 of the System Identification Toolbox",
Proceedings of the 13th IFAC Symposium on System Identification,
989-994, 2003.

AbstractKeywordsBiBTeX

Lennart Ljung, S. Joe Qin,
"Closed-Loop Subspace Identification with Innovation Estimation",
Proceedings of the 13th IFAC Symposium on System Identification,
887-892, 2003.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Educational Aspects of Identification Software User Interfaces",
Proceedings of the 13th IFAC Symposium on System Identification,
1590-1594, 2003.

AbstractKeywordsBiBTeX

Lennart Ljung, Pablo Parrilo,
"Initialization of Physical Parameter Estimates",
Proceedings of the 13th IFAC Symposium on System Identification,
1524-1529, 2003.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Aspects and Experiences of User Choices in Subspace Identification Methods",
Proceedings of the 13th IFAC Symposium on System Identification,
1802-1807, 2003.

AbstractKeywordsBiBTeX

Lennart Ljung, S. Joe Qin,
"Parallel QR Implementation of Subspace Identification with Parsimonious Models",
Proceedings of the 13th IFAC Symposium on System Identification,
1631-1636, 2003.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Initialisation Aspects for Subspace and Output-Error Identification Methods",
Proceedings of the 2003 European Control Conference,
2003.

AbstractKeywordsBiBTeX

Jacob Roll, Lennart Ljung, Alexander Nazin,
"Local Modelling of Nonlinear Dynamic Systems Using Direct Weight Optimization",
Proceedings of the 13th IFAC Symposium on System Identification,
1554-1559, 2003.

AbstractKeywordsBiBTeX

Jacob Roll, Lennart Ljung, Alexander Nazin,
"Local Modelling with A Priori Known Bounds Using Direct Weight Optimization",
Proceedings of the 2003 European Control Conference,
2003.

AbstractKeywordsBiBTeX

Svante Björklund, Lennart Ljung,
"A Review of Time-Delay Estimation Techniques",
Proceedings of the 42nd IEEE Conference on Decision and Control,
2502-2507 vol.3, 2003.

Markus Gerdin, Torkel Glad, Lennart Ljung,
"Parameter Estimation in Linear Differential-Algebraic Equations",
Proceedings of the 13th IFAC Symposium on System Identification,
1530-, 2003.

AbstractKeywordsBiBTeX

2002

Lennart Ljung, Liang-Liang Xie,
"Estimate Physical Parameters by Black-Box Modeling",
Proceedings of the 21st Chinese Control Conference,
673-677, 2002.

AbstractKeywordsBiBTeX

Lennart Ljung,
"System Identification and Simple Process Models",
Proceedings of the 2002 International Symposium on Advanced Control of Industrial Processes,
13-24, 2002.

AbstractKeywordsBiBTeX

Lennart Ljung, Alexander Nazin,
"Asymptotically Optimal Smoothing of Averaged LMS for Regression Parameter Tracking",
Proceedings of the 15th IFAC Congress,
436-436, 2002.

Lennart Ljung,
"Subspace Identification Methods Using Parsimonious Model Formulation",
Proceedings of the 2002 AIChE Annual Meeting,
2002.

AbstractKeywordsBiBTeX

Jacob Roll, Lennart Ljung, Alexander Nazin,
"A Non-Asymptotic Approach to Local Modelling",
Proceedings of the 4th Conference on Computer Science and Systems Engineering,
75-80, 2002.

AbstractKeywordsBiBTeX

Lennart Ljung, Jacob Roll, Alexander Nazin,
"A Non-Asymptotic Approach to Local Modelling",
Proceedings of the 41st IEEE Conference on Decision and Control,
638-643 vol.1, 2002.

Lennart Ljung,
"Identification for Control: Simple Process Models",
Proceedings of the 41st IEEE Conference on Decision and Control,
4652-4657 vol.4, 2002.

David Lindgren, Lennart Ljung,
"Clustered Regression Analysis",
Proceedings of the 41st IEEE Conference on Decision and Control,
1838-1844 vol.2, 2002.

Martin Enqvist, Lennart Ljung,
"Approximation of Non-Linear Systems in a Neighborhood of LTI Systems",
Proceedings of Reglermöte 2002,
289-291, 2002.

KeywordsBiBTeX

Martin Enqvist, Lennart Ljung,
"Estimating Nonlinear Systems in a Neighborhood of LTI-approximants",
Proceedings of the 41st IEEE Conference on Decision and Control,
1005-1010 vol.1, 2002.

2001

Lennart Ljung, Jacob Roll, Alberto Bemporad,
"Identification of Hybrid Systems via Mixed-Integer Programming",
Proceedings of the 40th IEEE Conference on Decision and Control,
786-792 vol.1, 2001.

Lennart Ljung, Wolfgang Reinelt,
"Robust Control of Identified Models with Mixed Parametric and Non-Parametric Uncertainties",
Proceedings of the 2001 European Control Conference,
3564--3569, 2001.

AbstractKeywordsBiBTeX

Lennart Ljung, Fredrik Tjärnström,
"Variance Properties of a Two-Step ARX Estimation Procedure",
Proceedings of the 2001 European Control Conference,
1840-1845, 2001.

AbstractKeywordsBiBTeX

Lennart Ljung, Anders Helmersson, Torkel Glad,
"Uncertain LTI-Models for Linear Control Design of Nonlinear Systems",
Proceedings of the 40th IEEE Conference on Decision and Control,
2692-2694 vol.3, 2001.

Lennart Ljung, Daishi A. Murano, Alex S. Poznyak,
"Robust High-Gain DNN Observer for Nonlinear Stochastic Continuous Time Systems",
Proceedings of the 40th IEEE Conference on Decision and Control,
3546-3551 vol.4, 2001.

Lennart Ljung,
"Black-Box Models from Input-Output Measurements",
Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference,
138-146, 2001.

2000

Lennart Ljung,
"Model Error Modeling and Control Design",
Proceedings of the 12th IFAC Symposium on System Identification,
2000.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Version 5 of the System Identification Toolbox for Use with MATLAB - WIth Object Orientation",
Proceedings of the 12th IFAC Symposium on System Identification, LiTH-ISY-R,
Vol. 2221,
703-708, 2000.

AbstractKeywordsBiBTeX

Fredrik Tjärnström, Lennart Ljung,
"L2 Model Reduction and Variance Reduction",
Proceedings of the 12th IFAC Symposium on System Identification, Automatica (Journal of IFAC),
Vol. Volume 38, Issue 9,
1517-1530, 2000.

Lennart Ljung,
"Teaching System Identification: Goals and Formats of Different Courses",
Proceedings of the 12th IFAC Symposium on System Identification, LiTH-ISY-R,
Vol. 2222,
2000.

AbstractKeywordsBiBTeX

Lennart Ljung, Anna Hagenblad,
"Maximum Likelihood Estimation of Wiener Models",
Proceedings of the 39th IEEE Conference on Decision and Control,
2417-2418 vol.3, 2000.

Lennart Ljung, Liang-Liang Xie,
"Aspects on the Interpretation of Disturbances in System Identification",
Proceedings of the 39th IEEE Conference on Decision and Control,
668-673 vol.1, 2000.

Lennart Ljung, Alf Isaksson, Ragnar Wallin,
"An Iterative Method for Identification of ARX Models from Incomplete Data",
Proceedings of the 39th IEEE Conference on Decision and Control,
203-208 vol.1, 2000.

1999

Tomas McKelvey, Lennart Ljung, Fredrik Gustafsson, Anders Stenman, Daniel Rivera,
"On Adaptive Smoothing of Empirical Transfer Function Estimates",
Proceedings of the 14th IFAC World Congress,
415-420, 1999.

AbstractKeywordsBiBTeX

Lennart Ljung, Pierre Carrette,
"Efficient Computation of Cramer-Rao Bounds for the Transfer Functions of MIMO State-Space Systems",
Proceedings of the 14th IFAC World Congress,
247-252, 1999.

AbstractKeywordsBiBTeX

Lennart Ljung, Fredrik Tjärnström,
"Minimizing the Variance of Transfer Function Estimates",
Proceedings of the 6th St. Petersburg Symposium on Adaptive Systems Theory,
194-200, 1999.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Estimation Focus in System Identification: Prefiltering, Noise Models, and Prediction",
Proceedings of the 38th IEEE Conference on Decision and Control,
2810-2815 vol.3, 1999.

Lennart Ljung, Fredrik Tjärnström,
"Estimating the Variance in Case of Undermodeling Using Bootstrap",
Proceedings of the 38th IEEE Conference on Decision and Control,
2394-2399 vol.3, 1999.

Lennart Ljung,
"Comments on Model Validation as Set Membership Identification",
Proceedings of the 1998 Robustness in Identification and Control Workshop, Lecture Notes in Control and Information Sciences,
7-17, 1999.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Model Validation and Model Error Modeling",
Prcoeedings of the 1999 Åström Symposiium on Control,
15-42, 1999.

AbstractKeywordsBiBTeX

Wolfgang Reinelt, Andrea Garulli, Lennart Ljung, Julio H. Braslavsky, Antonio Vicino,
"Model Error Concepts in Identification for Control",
Proceedings of the 38th IEEE Conference on Decision and Control,
1488-1493, 1999.

1998

Lennart Ljung, Urban Forssell,
"Identification for Control: Some Results on Optimal Experiment Design",
Proceedings of the 37th IEEE Conference on Decision and Control,
3384-3389 vol.3, 1998.

Lennart Ljung, Urban Forssell,
"Bias, Variance and Optimal Experiment Design: Some Comments on Closed Loop Identification",
Proceedings of the 1998 Conference on Perspectives in Control - A tribute to Ioan Dore Landau,
205-216, 1998.

AbstractKeywordsBiBTeX

Lennart Ljung, Anna Hagenblad,
"Maximum Likelihood Identification of Wiener Models with a Linear Regression Initialization",
Proceedings of the 37th IEEE Conference on Decision and Control,
712-713 vol.1, 1998.

Lennart Ljung, Torkel Glad,
"Identifiability with Constraints",
Proceedings of the 4th IFAC Symposium on Nonlinear Control Systems Design,
455-458, 1998.

AbstractKeywordsBiBTeX

Lennart Ljung, Urban Forssell,
"Identification of Unstable Systems using Output Error and Box-Jenkins Model Structures",
Proceedings of the 37th IEEE Conference on Decision and Control,
3932-3927 vol.4, 1998.

Lennart Ljung,
"Identification for Control - What is there to learn?",
Proceedings of the 1998 Learning, Control and Hybrid Systems Workshop, Lecture Notes in Control and Information Sciences,
207-225, 1998.

AbstractKeywordsBiBTeX

1997

Lennart Ljung,
"Identification, Model Validation and Control",
Plenary Presentation at the the 36th IEEE Conference on Decision and Control,
1997.

KeywordsBiBTeX

Lennart Ljung, Urban Forssell,
"Tracking Time-Varying Systems: Revisiting Some Basic Trade-offs",
Proceedings of the 11th IFAC Symposium on System Identification,
1759-1764, 1997.

AbstractKeywordsBiBTeX

Tomas McKelvey, Lennart Ljung,
"Interpretation of Subspace Methods: Consistency Analysis",
Proceedings of the 11th IFAC Symposium on System Identification,
1125-1130, 1997.

AbstractKeywordsBiBTeX

Lennart Ljung, Tomas McKelvey,
"Frequency Domain Maximum Likelihood Identification",
Proceedings of the 11th IFAC Symposium on System Identification,
1741-1746, 1997.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Identification in Closed Loop: Some Aspects on Direct and Indirect Approaches",
Proceedings of the 11th IFAC Symposium on System Identification,
141-146, 1997.

AbstractKeywordsBiBTeX

Lennart Ljung,
"System Identification",
Proceedings of the First European Conference on Signal Analysis and Prediction,
41-47, 1997.

AbstractKeywordsBiBTeX

Lennart Ljung, Peter Lindskog,
"Ensuring Certain Physical Properties in Black Box Models by Applying Fuzzy Techniques",
Proceedings of the 11th IFAC Symposium on System Identification,
721-727, 1997.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Developments for the System Identification Toolbox for MATLAB",
Proceedings of the 11th IFAC Symposium on System Identification,
969-975, 1997.

AbstractKeywordsBiBTeX

Lennart Ljung, Tomas McKelvey, Fredrik Gustafsson, Anders Stenman, Sarojini Adusumilli, Daniel Rivera,
"Just-in-Time Models for Improved Identification and Control",
Proceedings of the 1997 American Institute of Chemical Engineers Annual Meeting,
1997.

KeywordsBiBTeX

Lennart Ljung,
"Nonlinear Black Box Models in System Identification",
Proceedings of the 1997 IFAC International Symposum on Advanced Control of Chemical Processes,
1-13, 1997.

AbstractKeywordsBiBTeX

Fredrik Gustafsson, Lennart Ljung, Niclas Bergman,
"Point-Mass Filter and Cramer-Rao Bound for Terrain-Aided Navigation",
Proceedings of the 36th IEEE Conference on Decision and Control,
565-570 vol.1, 1997.

Urban Forssell, Lennart Ljung,
"Variance Results for Closed-Loop Identification Methods",
Proceedings of the 36th IEEE Conference on Decision and Control,
2435-2440, 1997.

Lennart Ljung, Paul. M. J. Van den Hof, Michel Gevers,
"Asymptotic Variance Expressions for Closed-Loop Identification and their Relevance in Identification for Control",
Proceedings of the 11th IFAC Symposium on Identification and System Parameter Estimation,
1449-1455, 1997.

AbstractKeywordsBiBTeX

1996

Lennart Ljung,
"Some Aspects of Nonlinear Black-Box Modeling in System Identification",
Proceedings of the 1996 Conference on Communications, Computing, Control and Signal Processing,
431-440, 1996.

Anders Stenman, Fredrik Gustafsson, Lennart Ljung,
"Just-in-Time Models for Dynamical Systems",
Proceedings of Reglermöte 1996,
285--289, 1996.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Models in Signal Processing",
Proceedings of Radiovetenskaplig Konferens 1996,
1996.

KeywordsBiBTeX

Lennart Ljung, Roger Germundsson, Johan Gunnarsson, Inger Klein, Jonas Plantin,
"Hybrid and Discrete Systems in Automatic Control - Some New (Linköping) Approaches",
Proceedings of Reglermöte 1996,
1996.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Development of System Identification",
Proceedings of the 13th IFAC World Congress,
141-146, 1996.

KeywordsBiBTeX

Lennart Ljung, Lei Guo,
"Estimating the Total Model Error from Standard Model Validation Tests",
Proceedings of the 13th IFAC World Congress,
133-138, 1996.

AbstractKeywordsBiBTeX

Tomas McKelvey, Lennart Ljung,
"A Least Squares Interpretation of Sub-Space Methods for System Identification",
Proceedings of the 35th IEEE Conference on Decision and Control,
335-342 vol.1, 1996.

Lennart Ljung,
"PAC-Learning and Asymptotic System Identification Theory",
Proceedings of the 35th IEEE Conference on Decision and Control,
2303-2307 vol.2, 1996.

Lennart Ljung, Fredrik Gustafsson, Anders Stenman,
"Just-in-Time Models for Dynamical Systems",
Proceedings of the 35th IEEE Conference on Decision and Control,
1115-1120 vol.1, 1996.

1995

Lennart Ljung,
"Nonlinear Black Box Modeling in System Identification",
Proceedings of the Fourth International Conference on Artificial Neural Networks,
1995.

KeywordsBiBTeX

Lennart Ljung,
"Nonlinear Black Box Models in Systems Identification",
Proceedings of the 2nd Russian Swedish Control Conference,
23-27, 1995.

AbstractKeywordsBiBTeX

Tomas McKelvey, Lennart Ljung, Hüseyin Akçay,
"Identification of Infinite Dimensional Systems from Frequency Response Data",
Proceedings of the 3rd European Control Conference,
2106-2111, 1995.

KeywordsBiBTeX

Håkan Hjalmarsson, Lennart Ljung,
"System Identification through the Eyes of Model Validation",
Proceedings of the 3rd European Control Conference,
1995.

AbstractKeywordsBiBTeX

Asha Tikku, Lennart Ljung,
"Worst-Case Identification in L

_{1}for F.I.R. Linear Systems", Proceedings of the 34th IEEE Conference on Decision and Control, 2998-3003 vol.3, 1995.Lennart Ljung, Lei Guo,
"Estimating the Total Model Error from Standard Model Validation Tests",
Proceedings of the 34th IEEE Conference on Decision and Control,
1651-1656 vol.2, 1995.

1994

Lennart Ljung,
"From Data to Model: A Guided Tour of System Identification",
Proceedings of the 1994 IEEE International Conference on Control,
422-430 vol.1, 1994.

Lennart Ljung,
"A Graphical User Interface (GUI) to the System Identification Toolbox",
Proceedings of the 10th IFAC Symposium on System Identification,
29-33, 1994.

KeywordsBiBTeX

Lennart Ljung,
"The EKF, RPEM and Recursive Maximum Likelihood Method in a Simple Application to Image Restoration",
Proceedings of the 10th IFAC Symposium on System Identification,
441-446, 1994.

KeywordsBiBTeX

Lennart Ljung, Peter Lindskog,
"Tools for Semi-Physical Modeling",
Proceedings of the 10th IFAC Symposium on System Identification,
237-242, 1994.

AbstractKeywordsBiBTeX

Jonas Sjöberg, Håkan Hjalmarsson, Lennart Ljung,
"Neural Networks in System Identification",
Proceedings of the 10th IFAC Symposium on System Identification,
49-72, 1994.

AbstractKeywordsBiBTeX

Hüseyin Akçay, Håkan Hjalmarsson, Lennart Ljung,
"On the Choice of Norms in System Identification",
Proceedings of the 10th IFAC Symposium on System Identification,
103-108, 1994.

AbstractKeywordsBiBTeX

Lennart Ljung, Lei Guo,
"The Role of Model Validation for Assessing the Size of the Unmodeled Dynamics",
Proceedings of the 33rd IEEE Conference on Decision and Control,
3894-3899 vol.4, 1994.

Lennart Ljung, Lei Guo,
"Performance Analysis of General Tracking Algorithms",
Proceedings of the 33rd IEEE Conference on Decision and Control,
2851-2855 vol.3, 1994.

Lennart Ljung, Svante Gunnarsson, Fredrik Gustafsson,
"On Time-Frequency Resolution of Signal Properties using Parametric Techniques",
Proceedings of the 33rd IEEE Conference on Decision and Control,
2259-2264 vol.3, 1994.

Torbjörn Andersson, Predrag Pucar, Lennart Ljung,
"Identification Aspects of Inter-Sample Input Behavior",
Proceedings of the 10th IFAC Symposium on System Identification,
137-142, 1994.

AbstractKeywordsBiBTeX

Lennart Ljung, Tomas McKelvey, T Abrahamsson,
"A Study of some Approaches to Vibration Data Analysis",
Proceedings of the 10th IFAC Symposium on System Identification,
289-294, 1994.

AbstractKeywordsBiBTeX

Jonas Sjöberg, Lennart Ljung,
"Criterion Minimization Using Estimation Data and Validation Data",
Proceedings of the 10th IFAC Symposium on System Identification,
187-190, 1994.

KeywordsBiBTeX

Lennart Ljung, Yucai Zhu, Peter van Overschee, Bart de Moor,
"Comparison of Three Classes of Identification Methods",
Proceedings of the 10th IFAC Symposium on System Identification,
175-180, 1994.

KeywordsBiBTeX

Håkan Hjalmarsson, Lennart Ljung,
"A Unifying View of Disturbances in Identification",
Proceedings of the 10th IFAC Symposium on System Identification,
73-78, 1994.

KeywordsBiBTeX

Lennart Ljung,
"Aspects on Accelerated Convergence in Stochastic Approximation Schemes",
Proceedings of the 33rd IEEE Conference on Decision and Control,
1649-1652 vol.2, 1994.

1993

Lennart Ljung, Jonas Sjöberg, Tomas McKelvey,
"On the Use of Regularization in System Identification",
Proceedings of the 12th IFAC World Congress,
381-386, 1993.

AbstractKeywordsBiBTeX

Mats Viberg, Björn Ottersten, Bo Wahlberg, Lennart Ljung,
"Performance of Subspace based State-Space System Identification Methods",
Proceedings of the 12th IFAC World Congress,
369-, 1993.

AbstractKeywordsBiBTeX

Lennart Ljung,
"The Process of Identification",
Proceedings of the 12th IFAC World Congress,
197-, 1993.

KeywordsBiBTeX

Lennart Ljung, Torbjörn Andersson, Torkel Glad,
"Identifiability Implies Robust Identifiability",
Proceedings of the Second European Control Conference,
2144-2148, 1993.

AbstractKeywordsBiBTeX

Lennart Ljung, Torbjörn Andersson, Torkel Glad,
"Identifiability Implies Robust Identifiability",
Proceedings of the 32nd IEEE Conference on Decision and Control,
567-569 vol.1, 1993.

Lennart Ljung,
"Some Results on Identifying Linear Systems Using Frequency Domain Data",
Proceedings of the 32nd IEEE Conference on Decision and Control,
3534-3538 vol.4, 1993.

Lennart Ljung,
"Information Contents in Identification Data from Closed-Loop Operation",
Proceedings of the 32th IEEE Conference on Decision and Control,
2248-2252 vol.3, 1993.

Håkan Hjalmarsson, Lennart Ljung,
"A Discussion of Unknown-but-Bounded Disturbances in System Identification",
Proceedings of the 32nd IEEE Conference on Decision and Control,
535-536 vol.1, 1993.

Lennart Ljung,
"Modelling of Industrial Systems",
Proceedings of the 7th International Symposium, Methodologies for Intelligent Systems, Lecture Notes in Computer Science,
338-350, 1993.

1992

Lennart Ljung, Bo Egardt, C. R. Johnson, Jr, G. A. Williamson,
"Adaptive System Performance in the Frequency Domain",
Adaptive systems in control and signal processing 1992,
33-40, 1992.

KeywordsBiBTeX

Lennart Ljung, Jonas Sjöberg,
"Overtraining, Regularization and Searching for Minimum in Neural Networks",
4th IFAC Symposium on Adaptive Systems in Control and Signal Processing,
669-674, 1992.

AbstractKeywordsBiBTeX

Peter Nagy, Lennart Ljung,
"System Identification using Bond Graphs",
Proceedings of the 4th IFAC Symposium on Adaptive Systems in Control and Signal Processing,
415-420, 1992.

KeywordsBiBTeX

Lennart Ljung, Jonas Sjöberg,
"A Comment on Leakage in Adaptive Algorithms",
Proceedings of the 4th IFAC International Symposium on Adaptive Systems in Control and Signal Processing,
377-382, 1992.

AbstractKeywordsBiBTeX

Lennart Ljung,
"Optimal and Ad Hoc Adaptation Mechanisms",
Proceedings of the 2nd International Symposium on Signals Systems and Electronics,
1992.

KeywordsBiBTeX

Lei Guo, Lennart Ljung, Pierre Priouret,
"Tracking Performance Analysis of the Forgetting Factor RLS Algorithm",
Proceedings of the 31st IEEE Conference on Decision and Control,
688-693 vol.1, 1992.

Lennart Ljung, Jonas Sjöberg,
"A System Identification Perspective on Neural Nets",
Proceedings of the 1992 IEEE Workshop on Neural Networks for Signal Processing,
423-435, 1992.

1991

Lennart Ljung, Bo Wahlberg, Håkan Hjalmarsson,
"Model Quality: The Role of Prior Knowledge and Data Information",
Proceedings of the 30th IEEE Conference on Decision and Control,
273-278, 1991.

Lennart Ljung,
"A (simple) Perspective on Adaptation Algorithms",
Proceedings of the 1991 Workshop on Stochastic Theory - Adaptive Control, Lecture Notes in Control and Information Sciences,
Vol. 184,
306-320, 1991.

R. B. Freund, Geoffrey A. Williamson, C. Richard Johnson, Jr, Lennart Ljung,
"Cascade Realization of an Adaptive FIR Filter: Global Properties of the Average Squared Prediction Error Surface",
Proceedings of the 25th Conference on Information Sciences and Systems,
1991.

KeywordsBiBTeX

Håkan Hjalmarsson, Bo Wahlberg, Lennart Ljung,
"Assessing Model Quality from Data",
Proceedings of the 1990 IIASA Symposium on Modeling and Control of Systems with Uncertainty,
167-187, 1991.

Lennart Ljung,
"An Exact Formula for the Tracking Ability of Adaptive Algorithms: Implications for the General Case",
Proceedings of the 9th IFAC Symposium on System Identification and System Parameter Estimation,
208-212, 1991.

KeywordsBiBTeX

Peter Nagy, Lennart Ljung,
"Estimating Time-Delays via State-Space Identification Methods",
Prcoeedings of the 9th IFAC Symposium on System Identification and System Parameter Estimation,
1141-1144, 1991.

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Peter Nagy, Lennart Ljung,
"Computer-Aided Model Structure Selection",
Proceedings of the 9th IFAC Symposium on System Identification and System Parameter Estimation,
918-923, 1991.

KeywordsBiBTeX

Lennart Ljung,
"Identifying State-Space Models with Mathwork's System Identification Toolbox",
Proceedings of the 9th IFAC Symposium on System Identification and System Parameter Estimation,
1582-1584, 1991.

KeywordsBiBTeX

Krister Forsman, Lennart Ljung,
"On the Dead-Zone in System Identification",
Proceedings of the 9th IFAC Symposium on System Identification and System Parameter Estimation,
1410-1414, 1991.

AbstractKeywordsBiBTeX

Bo Wahlberg, Lennart Ljung,
"On Estimation of Transfer Function Error Bounds",
Proceedings of the 1st European Control Conference,
1378-1180, 1991.

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Mats Viberg, Björn Ottersten, Bo Wahlberg, Lennart Ljung,
"A Statistical Perspective on State-Space Modelling using Subspace Methods",
Proceedings of the 30th IEEE Conference on Decision and Control,
1337-1342 vol.2, 1991.

Torkel Glad, Lennart Ljung,
"Testing Global Identifiability for Arbitrary Model Parametrizations",
Proceedings of the 9th IFAC Symposium on System Identification and System Parameter Estimation,
1077-1082, 1991.

KeywordsBiBTeX

Lennart Ljung, Bo Wahlberg, Torsten Söderström,
"On Sampling and Reconstruction of Continuous Time Stochastic Systems",
Proceedings of the 9th IFAC Symposium on System Identification and System Parameter Estimation,