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Model and Feature Selection in Hidden Conditional Random Fields with Group Regularization

  • Rodrigo Cilla
  • Miguel A. Patricio
  • Antonio Berlanga
  • José M. Molina
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8073)

Abstract

Sequence classification is an important problem in computer vision, speech analysis or computational biology. This paper presents a new training strategy for the Hidden Conditional Random Field sequence classifier incorporating model and feature selection. The standard Lasso regularization employed in the estimation of model parameters is replaced by overlapping group-L1 regularization. Depending on the configuration of the overlapping groups, model selection, feature selection,or both are performed. The sequence classifiers trained in this way have better predictive performance. The application of the proposed method in a human action recognition task confirms that fact.

Keywords

Feature Selection Action Recognition Hide Variable Human Action Recognition High Predictive Performance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Rodrigo Cilla
    • 1
  • Miguel A. Patricio
    • 1
  • Antonio Berlanga
    • 1
  • José M. Molina
    • 1
  1. 1.Computer Science DepartmentUniversidad Carlos III de MadridColmenarejoSpain

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