Query representation and hybrid retrieval model construction method based on context sensing theme
A technology of model building and topic model, applied in the field of Internet information retrieval, can solve the problems of deviating from the original query, reducing query accuracy, and only considering, so as to achieve the effect of reducing query drift, promoting the improvement of retrieval effect, and reducing the introduction of noise
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[0021] The present invention will be further described in detail with reference to the following specific embodiments and accompanying drawings. Except for the content specifically mentioned below, the process, conditions, experimental methods, etc. for implementing the present invention are all common knowledge and common knowledge in the field, and the present invention is not particularly limited.
[0022] like figure 1 As shown, the method for establishing a query representation and a hybrid retrieval model based on a context-aware topic of the present invention includes the following steps:
[0023] Step 1: based on the keyword set of the query, obtain a pseudo-relevant feedback document of the query, and select a context related to the query from the pseudo-relevant feedback document;
[0024] Step 2: Introduce a context-aware topic model, integrate the context into the context-aware topic model, mine the topic information implied by the context window based on the corp...
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