TY - CONF ID - www2009132 UR - http://www2009.eprints.org/132/ A1 - Lin, Chen A1 - Yang, Jiang-Ming A1 - Cai, Rui A1 - Wang, Xin-Jing A1 - Wang, Wei A1 - Zhang, Lei Y1 - 2009/04// N2 - The abundant knowledge in web communities has motivated the research interests in discussion threads. The dynamic nature of discussion threads poses interesting and challenging problems for computer scientists. Although techniques such as semantic models or structural models have been shown to be useful in a number of areas, they are inefficient in understanding discussion threads due to the temporal dependence among posts in a discussion thread. Such dependence causes that semantics and structure coupled with each other in discussion threads. In this paper, we propose a sparse coding-based model named SMSS to Simultaneously Model Semantic and Structure of discussion threads. TI - Modeling Semantics and Structure of Discussion Threads SP - 1103 M2 - Madrid, Spain AV - public EP - 1103 T2 - 18th International World Wide Web Conference ER -