A Novel Probabilistic Approach for Efficient Information Retrieval
نویسندگان
چکیده
منابع مشابه
A Novel Probabilistic Approach for Efficient Information Retrieval
Information on the World Wide Web is increasing tremendously. To get the relevant information from very large data sets is essential. In traditional retrieval systems, the query is given to large corpus to retrieve the relevant documents. The traditional models for information retrieval are just one subclass of retrieval techniques that have been studied in many years. Although many techniques ...
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We study an explicit parametric model of documents, queries, and relevancy assessment for Information Retrieval (IR). Mean-field methods are applied to analyze the model and derive efficient practical algorithms to estimate the parameters in the problem. The hyperparameters are estimated by a fast approximate leave-one-out cross-validation procedure based on the cavity method. The algorithm is ...
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We propose a proximity probabilistic model (PPM) that advances a bag-of-words probabilistic retrieval model. In our proposed model, a document is transformed to a pseudo document, in which a term count is propagated to other nearby terms. Then we consider three heuristics, i.e., the distance of two query term occurrences, their order, and term weights, and try four kernel functions in measuring...
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Since user’s relevance judgments are a source of evidence for information retrieval, learning from this feedback is an appealing idea. Many different learning techniques have successfully been used for relevance feedback. In most models, learning is either performed off line or is based on simple heuristics. The approach we propose is based on a classical probabilistic model in which learning f...
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Information Retrieval Systems [12][19] are traditionally implemented as a pipeline of specialpurpose processing modules targeting the extraction of a particular kind of information. A major drawback of such an approach is that whenever a new extraction goal emerges or a module is improved, extraction has to be reapplied from scratch to the entire text corpus even though only a small part of the...
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ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2010
ISSN: 0975-8887
DOI: 10.5120/1354-1827