Esa Ollila Group

Organisational unit: Research group

Research outputs

  1. 2019
  2. Published

    Optimal shrinkage covariance matrix estimation under random sampling from elliptical distributions

    Ollila, E. & Raninen, E., 15 May 2019, In : IEEE Transactions on Signal Processing. 67, 10, p. 2707-2719 13 p., 8676095.

    Research output: Contribution to journalArticle

  3. Published

    Fusing Eigenvalues

    Basiri, S., Ollila, E., Drašković, G. & Pascal, F., 1 May 2019, ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). Institute of Electrical and Electronics Engineers, p. 4968-4972 5 p. 8682906. (Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  4. Published

    Robust Least Mean Squares Estimation of Graph Signals

    Miettinen, J., Vorobyov, S. & Ollila, E., 1 May 2019, ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). Institute of Electrical and Electronics Engineers, p. 5416-5420 5 p. 8683193. (Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  5. 2018
  6. Published

    Simultaneous signal subspace rank and model selection with an application to single-snapshot source localization

    Tabassum, M. N. & Ollila, E., 29 Nov 2018, 2018 26th European Signal Processing Conference, EUSIPCO 2018. IEEE, Vol. 2018-September. p. 1592-1596 5 p. 8553171. (European Signal Processing Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  7. Published

    Compressive Regularized Discriminant Analysis of High-Dimensional Data with Applications to Microarray Studies

    Tabassum, M. N. & Ollila, E., 10 Sep 2018, 2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings. Institute of Electrical and Electronics Engineers, Vol. 2018-April. p. 4204-4208 5 p. 8462328. (Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  8. Published

    Optimal Pooling of Covariance Matrix Estimates Across Multiple Classes

    Raninen, E. & Ollila, E., 10 Sep 2018, 2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings. Institute of Electrical and Electronics Engineers, Vol. 2018-April. p. 4224-4228 5 p. 8461327. (Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  9. Published

    Sequential adaptive elastic net approach for single-snapshot source localization

    Tabassum, M. & Ollila, E., 29 Jun 2018, In : Journal of the Acoustical Society of America. 143, 6, p. 3873-3882 10 p.

    Research output: Contribution to journalArticle

  10. Published

    Graph Error Effect in Graph Signal Processing

    Miettinen, J., Vorobyov, S. A. & Ollila, E., 2018, 2018 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP). IEEE, p. 4164-4168 5 p. (Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  11. Published

    Robust Statistics for Signal Processing

    Zoubir, A. M., Koivunen, V., Ollila, E. & Muma, M., 2018, Cambridge: Cambridge University Press.

    Research output: Book/ReportBook

  12. 2017
  13. Published

    Optimal high-dimensional shrinkage covariance estimation for elliptical distributions

    Ollila, E., Oct 2017, 2017 25th European Signal Processing Conference (EUSIPCO). IEEE, p. 1639 - 1643 5 p. (European Signal Processing Conference ).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  14. Published

    Pathwise Least Angle Regression and a Significance Test for the Elastic Net

    Tabassum, M. & Ollila, E., Oct 2017, 2017 25th European Signal Processing Conference (EUSIPCO). IEEE, p. 1309 - 1313 5 p. (European Signaal Processing Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  15. Published

    Alternative Derivation of FastICA with Novel Power Iteration Algorithm

    Basiri, S., Ollila, E. & Koivunen, V., 1 Sep 2017, In : IEEE Signal Processing Letters. 24, 9, p. 1378-1382 5 p., 7994645.

    Research output: Contribution to journalArticle

  16. Published

    Enhanced bootstrap method for statistical inference in the ICA model

    Basiri, S., Ollila, E. & Koivunen, V., 1 Sep 2017, In : Signal Processing. 138, p. 53-62 10 p.

    Research output: Contribution to journalArticle

  17. Published

    Scaled and square-root elastic net

    Raninen, E. & Ollila, E., 16 Jun 2017, 2017 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2017 - Proceedings. IEEE, p. 4336-4340 5 p. 7952975. (Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  18. 2016
  19. Published

    Adaptive Lasso based on joint M-estimation of regression and scale

    Ollila, E., 28 Nov 2016, Proceedings of the 24th European Signal Processing Conference, EUSIPCO 2016. Institute of Electrical and Electronics Engineers, Vol. 2016-November. p. 2191-2195 5 p. 7760637. (European Signal Processing Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  20. Published

    Single-snapshot DoA estimation using adaptive elastic net in the complex domain

    Tabassum, M. N. & Ollila, E., 15 Nov 2016, 4th International Workshop on Compressed Sensing Theory and its Applications to Radar, Sonar and Remote Sensing, CoSeRa 2016. Institute of Electrical and Electronics Engineers, p. 197-201 5 p. 7745728

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  21. Published

    Direction of arrival estimation using robust complex Lasso

    Ollila, E., 31 May 2016, 2016 10th European Conference on Antennas and Propagation, EuCAP 2016. Institute of Electrical and Electronics Engineers, 7481141. (Proceedings of the European Conference on Antennas and Propagation).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  22. Published

    Robust, Scalable, and Fast Bootstrap Method for Analyzing Large Scale Data

    Basiri, S., Ollila, E. & Koivunen, V., 15 Feb 2016, In : IEEE Transactions on Signal Processing. 64, 4, p. 1007-1017 11 p.

    Research output: Contribution to journalArticle

  23. 2015
  24. Published

    Multichannel sparse recovery of complex-valued signals using Huber's criterion

    Ollila, E., 2015, 3rd International Workshop on on Compressed Sensing Theory and its Applications to Radar, Sonar and Remote Sensing (CoSeRa'15), Pisa, Italy, June 16-19, 2015. p. 26-30

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  25. Published

    New robust LASSO method based on ranks

    Kim, H-J., Ollila, E. & Koivunen, V., 2015, 23rd European Signal Processing Conference (EUSIPCO'15), Nice, France, Aug 31-Sep 4, 2015. p. 704-708

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  26. Published

    Nonparametric Simultaneous Sparse Recovery: an Application to Source Localization

    Ollila, E., 2015, 23rd European Signal Processing Conference (EUSIPCO'15), Nice, France, Aug 31- Sep 4, 2015. p. 509-513

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  27. Published

    Randomized Simultaneous Orthogonal Matching Pursuit

    Ejaz, A., Ollila, E. & Koivunen, V., 2015, 23rd European Signal Processing Conference (EUSIPCO'15), Nice, France, Aug 31- Sep 4, 2015. p. 709-713

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  28. Published

    Robust Simultaneous Sparse Approximations

    Ollila, E., 2015, Modern Nonparametric, Robust and Multivariate Methods. Nordhausen, K. & Taskinen, S. (eds.). Heidelberg, p. 471-489

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  29. 2014
  30. Published

    FAST AND ROBUST BOOTSTRAP IN ANALYSING LARGE MULTIVARIATE DATASETS

    Basiri, S., Ollila, E. & Koivunen, V., 2014, CONFERENCE RECORD OF THE 2014 FORTY-EIGHTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS. Matthews, M. B. (ed.). p. 8-13 6 p. (Conference Record of the Asilomar Conference on Signals Systems and Computers).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  31. Published

    Fast and robust bootstrap method for testing hypotheses in the ICA model

    Basiri, S., Ollila, E. & Koivunen, V., 2014, IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP'14), Florence, Italy, May 4-9, 2014. p. 6-10

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  32. Published

    Model order selection

    Koivunen, V. & Ollila, E., 2014, Academic Press Library in Signal Processing: Volume 3 -- Array and Statistical Signal Processing. Zoubir, A. M., Viberg, M., Chellappa, R. & Theodoridis, S. (eds.). Burlington, MA, p. 9-25

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  33. Published

    Regularized M-estimators of scatter matrix

    Ollila, E. & Tyler, D. E., 2014, In : IEEE Transactions on Signal Processing. 62, 22, p. 6059

    Research output: Contribution to journalArticle

  34. Published

    Robust Compressive Sensing

    Ollila, E., Kim, H-J. & Koivunen, V., 2014, Regularization, Optimization, Kernels, and Support Vector Machines. Suykens, J. A. K., Signoretto, M. & Argyriou, A. (eds.). Boca Raton, FL: Chapman & Hall

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  35. Published

    Robust iterative hard thresholding for compressed sensing

    Ollila, E., Kim, H-J. & Koivunen, V., 2014, International Symposium on Communications, Control, and Signal Processing (ISCCSP'14), Athens, Greece, May 21-23, 2014. p. 226-229

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  36. Published

    Robust iteratively reweighted LASSO estimation for sparse tensor factorizations

    Kim, H-J., Ollila, E., Koivunen, V. & Poor, H. V., 2014, IEEE Workshop on Statistical Signal Processing (SSP'14), Cold Coast, Australia, June 29 - July 2, 2014. p. 452-455

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  37. 2013
  38. Published

    On applicability of PCA, voxel-wise variance normalization and dimensionality assumptions for sliding temporal window sICA in resting-state fMRI

    Remes, J., Elseoud, A., Ollila, E., Haapea, M., Starck, T., Nikkinen, J., Tervonen, O. & Silven, O., 2013, In : Magnetic Resonance Imaging. 31, 8, p. 1338-1348

    Research output: Contribution to journalArticle

  39. Published

    Robust and sparse estimation of tensor decompositions

    Kim, H-J., Ollila, E., Koivunen, V. & Croux, C., 2013, IEEE Global Conference on Signal and Information Processing; Austin, USA; December 3 - 5, 2013. p. 965

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  40. Published

    Robust regularized M-estimators of regression parameters and covariance matrix

    Ollila, E., Kim, H-J. & Koivunen, V., 2013, nternational Workshop on Advances in Regularization, Optimization, Kernel Methods and Support Vector Machines; Leuven, Belgium; July 8-10, 2013. p. 67-68

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  41. Published

    Sparse regularization of tensor decompositions

    Kim, H-J., Ollila, E. & Koivunen, V., 2013, IEEE International Conference on Acoustics, Speech and Signal Processing; Vancouver, Canada; May 26 - 31, 2013. p. 3836-3840

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  42. 2012
  43. Published

    Complex elliptically symmetric distributions: survey, new results and applications

    Ollila, E., Tyler, D. E., Koivunen, V. & Poor, H. V., 2012, In : IEEE Transactions on Signal Processing. 60, 11, p. 5597-5625

    Research output: Contribution to journalArticle

  44. Published

    Compound-Gaussian clutter modelling with an inverse Gaussian texture distribution

    Ollila, E., Tyler, D. E., Koivunen, V. & Poor, H. V., 2012, In : IEEE Signal Processing Letters. 19, 12, p. 876-879

    Research output: Contribution to journalArticle

  45. Published

    Distribution-free detection under complex elliptically symmetric clutter distribution

    Ollila, E. & Tyler, D. E., 2012, SAM The 7th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM'12), Hoboken, NJ, USA , June 17-20, 2012.. p. 413

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  46. Published

    Robust Greedy Algorithms for Compressed Sensing

    Razavi, S. A., Ollila, E. & Koivunen, V., 2012, EUSIPCO The 20th European Signal Processing Conference (EUSIPCO'12), Bucharest, Romania, Aug 28-31, 2012. p. 969-973

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  47. 2011
  48. Published

    A robust estimator and detector of circularity of complex signals

    Ollila, E., Koivunen, V. & Poor, H. V., 2011, ICASSP IEEE International Conference on Acoustics, Speech and Signal Processing(ICASSP'11), Prague, Czech republic, May 22 - 27, 2011.. p. 3620

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  49. Published
  50. Published

    Complex-valued signal processing - essential models, tools and statistics

    Ollila, E., Koivunen, V. & Poor, H. V., 2011, 2011 Information Theory and Applications Workshop, San Diego, CA, USA, Feb 6 - 11, 2011..

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  51. Published

    Deflation-based FastICA reloaded

    Nordhausen, K., Ilmonen, P., Mandal, A., Oja, H. & Ollila, E., 2011, EUSIPCO 19th European Signal Processing Conference (EUSIPCO'11), Barcelona, Spain, Aug 29 - Sep 2, 2011. p. 1854

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  52. Published

    Effects of repeatability measures on results of fMRI sICA: A study on simulated and real resting-state effects

    Remes, J. J., Starck, T., Nikkinen, J., Ollila, E., Beckmann, C. F., Tervonen, O., Kiviniemi, V. & Silven, O., 2011, In : NeuroImage. 56, 2, p. 554-569

    Research output: Contribution to journalArticle

  53. Published

    Multivariate models and the first four moments

    Nordhausen, K., Oja, H. & Ollila, E., 2011, Nonparametric Statistics and Mixture Models: A Festschrift in Honor of Thomas P.Hettmansperger,. Richards, D. & Rosenberger, J. L. (eds.). Singapore: World Scientific Press, p. 267-287

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  54. Published

    On testing hypotheses of mixing vectors in the ICA model using FastICA

    Ollila, E. & Kim, H-J., 2011, IEEE International Symposium on Biomedical Imaging (ISBI'11), Chicago, USA, Mar. 30 - Apr. 2, 2011. p. 325

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  55. Published

    On testing the extent of noncircularity

    Novey, M., Ollila, E. & Adali, T., 2011, In : IEEE Transactions on Signal Processing. 59, 11, p. 5632-5637

    Research output: Contribution to journalArticle

  56. Published

    On the performance indices of ICA and blind source separation

    Nordhausen, K., Ollila, E. & Oja, H., 2011, SPAWC 12th IEEE International Workshop on Signal Processing Advances for Wireless Communications (SPAWC'11), San Fransisco, CA, June 26-29, 2011. p. 486-490

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  57. 2010
  58. Published

    A new performance index for ICA: properties, computation and asymptotic analysis

    Ilmonen, P., Nordhausen, K., Oja, H. & Ollila, E., 2010, Latent Variable Analysis and Signal Separation. Vigneron, V., Zarzoso, V., Moreau, E., Gribonval, R. & Vincent, E. (eds.). Heidelberg, p. 229-236 (Lecture Notes in Computer Science).

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  59. Published

    Contributions to independent component analysis, sensor array and complex valued signal processing

    Ollila, E., 2010, 212 p.

    Research output: ThesisDoctoral ThesisCollection of Articles

  60. Published

    Essential Statistics and Tools for Complex Random Variables

    Eriksson, J., Ollila, E. & Koivunen, V., 2010, In : IEEE Transactions on Signal Processing. 58, 10, p. 5400-5408

    Research output: Contribution to journalArticle

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