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- W1570709442 abstract "AbstractUsing probabilistic Language Modeling approach in Information Retrieval, model for each document is estimated individually. However, with Web pages becoming more complex, each of them may contain some blocks discussing different topics. Consequently, the performance of statistic model for web document tends to be degraded by the mixture of topics. In this paper, we argue that segmenting Web page into several relatively independent blocks will assist the language modeling and a Block-based Language Modeling (BLM) approach is proposed. Different with normal method, BLM refines the modeling process into two parts: the probability of a query occurring in a block, and the probability of a block occurring in a Web page. Then given a query, those pages with more relevant blocks tend to be retrieved. Experimental results show that when unigram model is used, our approach outperforms original language modeling for web search in most cases.KeywordsLanguage ModelingQuery TermQuery ExpansionBlock InformationDocument Object ModelThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
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- W1570709442 date "2005-01-01" @default.
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- W1570709442 title "Block-Based Language Modeling Approach Towards Web Search" @default.
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- W1570709442 doi "https://doi.org/10.1007/978-3-540-31849-1_18" @default.
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