Mixed-norm regularization for brain decoding

Citations of this article
Mendeley users who have this article in their library.


This work investigates the use of mixed-norm regularization for sensor selection in event-related potential (ERP) based brain-computer interfaces (BCI). The classification problem is cast as a discriminative optimization framework where sensor selection is induced through the use of mixed-norms. This framework is extended to the multitask learning situation where several similar classification tasks related to different subjects are learned simultaneously. In this case, multitask learning helps in leveraging data scarcity issue yielding to more robust classifiers. For this purpose, we have introduced a regularizer that induces both sensor selection and classifier similarities. The different regularization approaches are compared on three ERP datasets showing the interest of mixed-norm regularization in terms of sensor selection. The multitask approaches are evaluated when a small number of learning examples are available yielding to significant performance improvements especially for subjects performing poorly. © 2014 R. Flamary et al.




Flamary, R., Jrad, N., Phlypo, R., Congedo, M., & Rakotomamonjy, A. (2014). Mixed-norm regularization for brain decoding. Computational and Mathematical Methods in Medicine, 2014. https://doi.org/10.1155/2014/317056

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free