Efficient misbehaving user detection in online video chat services

Hanqiang Cheng, Yu Li Liang, Xinyu Xing, Xue Liu, Richard Han, Qin Lv, Shivakant Mishra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

Online video chat services, such as Chatroulette, Omegle, and vChatter are becoming increasingly popular and have attracted millions of users. One critical problem encoun- tered in such applications is the presence of misbehaving users (\ashers") and obscene content. Automatically filtering out obscene content from these systems in an eficient manner poses a difficult challenge. This paper presents a novel Fine-Grained Cascaded (FGC) classification solution that significantly speeds up the compute-intensive process of classifying misbehaving users by dividing image feature ex- traction into multiple stages and flltering out easily classified images in earlier stages, thus saving unnecessary computation costs of feature extraction in later stages. Our work is further enhanced by integrating new webcam-related con- textual information (illumination and color) into the classification process, and a 2-stage soft margin SVM algorithm for combining multiple features. Evaluation results using real-world data set obtained from Chatroulette show that the proposed FGC based classification solution significantly outperforms state-of-the-art techniques.

Original languageEnglish (US)
Title of host publicationWSDM 2012 - Proceedings of the 5th ACM International Conference on Web Search and Data Mining
Pages23-32
Number of pages10
DOIs
StatePublished - 2012
Event5th ACM International Conference on Web Search and Data Mining, WSDM 2012 - Seattle, WA, United States
Duration: Feb 8 2012Feb 12 2012

Publication series

NameWSDM 2012 - Proceedings of the 5th ACM International Conference on Web Search and Data Mining

Other

Other5th ACM International Conference on Web Search and Data Mining, WSDM 2012
CountryUnited States
CitySeattle, WA
Period2/8/122/12/12

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

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  • Cite this

    Cheng, H., Liang, Y. L., Xing, X., Liu, X., Han, R., Lv, Q., & Mishra, S. (2012). Efficient misbehaving user detection in online video chat services. In WSDM 2012 - Proceedings of the 5th ACM International Conference on Web Search and Data Mining (pp. 23-32). (WSDM 2012 - Proceedings of the 5th ACM International Conference on Web Search and Data Mining). https://doi.org/10.1145/2124295.2124301