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• W4615079 abstract "Generative models for text data are based on the idea that a document can be modeled as a mixture of topics, each of which is represented as a probability distribution over the terms. Such models have traditionally assumed that a document is an indivisible unit for the generative process, which may not be appropriate to handle documents with an explicit multi-topic structure. This paper presents a generative model that exploits a given decomposition of documents in smaller text blocks which are topically cohesive (segments). A new variable is introduced to model the within-document segments: using this variable at documentlevel, word generation is related not only to the topics but also to the segments, while the topic latent variable is directly associated to the segments, rather than to the document as a whole. Experimental results have shown that, compared to existing generative models, our proposed model provides better perplexity of language modeling and better support for effective clustering of documents." @default.
• W4615079 created "2016-06-24" @default.
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• W4615079 date "2011-01-01" @default.
• W4615079 modified "2023-09-26" @default.
• W4615079 title "A Statistical Model for Topically Segmented Documents" @default.
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• W4615079 doi "https://doi.org/10.1007/978-3-642-24477-3_21" @default.
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