University of Cambridge > Talks.cam > Inference Group > Logistic regression with a Laplacian prior on the singular values: convex duality and application to EEG classification.

  Browse A-Z

Log in

Cambridge users (raven)details Other usersdetails No account?details

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

Logistic regression with a Laplacian prior on the singular values: convex duality and application to EEG classification.

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Christian Steinruecken.

Note unusual time and location

We consider a matrix coefficient probabilistic classification problem. We put a Laplacian prior on the singular values of the coefficient matrix. The Laplacian prior not only keeps the singular value spectrum of the regression coefficient sparse, thus offering good interpretation of the solution, but also is a key to good generalization. In addition, we propose an efficient optimization algorithm based on interior-point method. The convex duality plays the key role in this implementation. We apply the mehtod to motor-imagery EEG classification problem in the context of Brain-Computer Interface (BCI). Classification results on 162 BCI datasets show significant improvement in the classification accuracy against $\ell_2$-regularized logistic regression, rank=2 approximated logistic regression as well as Common Spatial Pattern (CSP) based classifier, which is a popular technique in BCI . Connections to LASSO , GP classification with a second order polynomial kernel, and SVM are discussed.

I would also like to talk about “Multiple-ouput Gaussian Process for Nonlinear System Identification”, which is still a vague idea but I hope I get some stimulating feedbacks.

This talk is part of the Inference Group series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

III Pint of Knowledge Slavonic Studies

Other talks

The frequency of ‘America’ in America Polish Britain: Multilingualism and Diaspora Community I And You: Documentary As Encounter Epigenetics: One Genome, Multiple Phenotypes The Digital Doctor: Hope, Hype, and Harm at the Dawn of Medicine’s Computer Age Single Cell Seminars (September) An SU(3) variant of instanton homology for webs Investigating the Functional Anatomy of Motion Processing Pathways in the Human Brain From Euler to Poincare Production Processes Group Seminar - 'Re-thinking biosensors for resource-limited settings'
 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity