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Title: Learning to share latent tasks for action recognition
Authors: Zhou, Q.
Wang, G.
Jia, K.
Zhao, Q. 
Keywords: Action Recognition
Latent Task
Issue Date: 2013
Citation: Zhou, Q., Wang, G., Jia, K., Zhao, Q. (2013). Learning to share latent tasks for action recognition. Proceedings of the IEEE International Conference on Computer Vision : 2264-2271. ScholarBank@NUS Repository.
Abstract: Sharing knowledge for multiple related machine learning tasks is an effective strategy to improve the generalization performance. In this paper, we investigate knowledge sharing across categories for action recognition in videos. The motivation is that many action categories are related, where common motion pattern are shared among them (e.g. diving and high jump share the jump motion). We propose a new multi-task learning method to learn latent tasks shared across categories, and reconstruct a classifier for each category from these latent tasks. Compared to previous methods, our approach has two advantages: (1) The learned latent tasks correspond to basic motion patterns instead of full actions, thus enhancing discrimination power of the classifiers. (2) Categories are selected to share information with a sparsity regularizer, avoiding falsely forcing all categories to share knowledge. Experimental results on multiple public data sets show that the proposed approach can effectively transfer knowledge between different action categories to improve the performance of conventional single task learning methods. © 2013 IEEE.
Source Title: Proceedings of the IEEE International Conference on Computer Vision
ISBN: 9781479928392
DOI: 10.1109/ICCV.2013.281
Appears in Collections:Staff Publications

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