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RLSI (Regularized Latent Semantic Indexing) is a non-probabilistic topic model proposed in [1]. The Java package parallelizes RLSI algorithm via multi-threading. We also provide the Java implementation of NMF (Non-negative Matrix Factorization) used in[2].

[1] Quan Wang , Jun Xu , Hang Li , Nick Craswell, Regularized latent semantic indexing, Proceedings of the 34th international ACM SIGIR conference on Research and development in Information Retrieval, July 24-28, 2011, Beijing, China.

[2] Quan Wang , Jun Xu , Hang Li , Nick Craswell, Regularized Latent Semantic Indexing: A New Approach to Large-Scale Topic Modeling, ACM Transactions on Information Systems, Vol. 31, No. 1, Article 5, Publication date: January 2013.

Development Team: Zhicheng He, Yingjie Xu, Jun Xu, Maoqiang Xie, Yalou Huang Maintained by Lab of Intelligent Information Processing(, Nankai University(, China.