NDLI: Exploiting Privileged Information from Web Data for Action and Event Recognition

Content Provider	Springer Nature Link
Author	Niu, Li Li, Wen Xu, Dong
Copyright Year	2015
Abstract	In the conventional approaches for action and event recognition, sufficient labelled training videos are generally required to learn robust classifiers with good generalization capability on new testing videos. However, collecting labelled training videos is often time consuming and expensive. In this work, we propose new learning frameworks to train robust classifiers for action and event recognition by using freely available web videos as training data. We aim to address three challenging issues: (1) the training web videos are generally associated with rich textual descriptions, which are not available in test videos; (2) the labels of training web videos are noisy and may be inaccurate; (3) the data distributions between training and test videos are often considerably different. To address the first two issues, we propose a new framework called multi-instance learning with privileged information (MIL-PI) together with three new MIL methods, in which we not only take advantage of the additional textual descriptions of training web videos as privileged information, but also explicitly cope with noise in the loose labels of training web videos. When the training and test videos come from different data distributions, we further extend our MIL-PI as a new framework called domain adaptive MIL-PI. We also propose another three new domain adaptation methods, which can additionally reduce the data distribution mismatch between training and test videos. Comprehensive experiments for action and event recognition demonstrate the effectiveness of our proposed approaches.
Starting Page	130
Ending Page	150
Page Count	21
File Format	PDF
ISSN	09205691
Journal	International Journal of Computer Vision
Volume Number	118
Issue Number	2
e-ISSN	15731405
Language	English
Publisher	Springer US
Publisher Date	2015-11-13
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Learning using privileged information Multi-instance learning Domain adaptation Action recognition Event recognition Computer Imaging, Vision, Pattern Recognition and Graphics Artificial Intelligence (incl. Robotics) Image Processing and Computer Vision Pattern Recognition
Content Type	Text
Resource Type	Article
Subject	Artificial Intelligence Computer Vision and Pattern Recognition Software

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