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Document Topic Extraction aims at using several key phrases to describe the topics of documents. It can be applied in web document categorization and tagging, document clusters topic description and information retrieval tasks. In this paper, we propose a Wikipedia category-based document topic extraction method. Document is mapped to a set of Wikipedia(More)
How best to represent text data is an important problem in text mining tasks including information retrieval, clustering, classification and etc.. In this paper, we proposed a compact document representation with term semantic units which are identified from the implicit and explicit semantic information. Among it, the implicit semantic information is(More)
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