A Semi-Supervised Human Action Learning

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Authors

1 Department of Computer Engineering, Mamasani Branch, Islamic Azad University, Mamasani, Iran

2 Department of Computer Engineering, Mamasani Branch, Islamic Azad University, Mamasani, Iran Young Researchers and Elite Club, Mamasani Branch, Islamic Azad University, Mamasani, Iran

Abstract

Exploiting multimodal information like acceleration and heart rate is a promising method to achieve human action recognition. A semi-supervised action recognition approach AUCC (Action Understanding with Combinational Classifier) using the diversity of base classifiers to create a high-quality ensemble for multimodal human action recognition is proposed in this paper. Furthermore, both labeled and unlabeled data are applied to obtain the diversity measure from multimodal human action recognition. Any classifiers can be applied by AUCC as its base classifier to create the human action recognition model, and the diversity of classifier ensemble is embedded in the error function of the model. The model’s error is decayed and back-propagated to the basic classifiers through each iteration. The basic classifiers’ weights are acquired during creation of the ensemble to guarantee the appropriate total accuracy of the model. Considerable experiments have been done during creation of the ensemble. Extensive experiments show the effectiveness of the offered method and suggest its superiority of exploiting multimodal signals.

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