Retrieved result clustering system in coal mine search engine
A search engine and clustering technology, which is used in network data retrieval, network data indexing, and other database retrieval directions.
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[0019] The search result clustering system in the coal mine search engine includes a search result clustering and category label extraction device. The device includes a search engine server, a text search result clustering module and a category label extraction module. The coal mine search engine server processes query requests submitted by users , the initial search results generated are returned to the user after the text search result clustering module; in the text search result clustering module, the following methods are used for data analysis:
[0020] (1) Initialization: express the retrieval result document set as Among them, A represents the document-feature word matrix corresponding to the document set, m is the number of documents, n represents the number of feature words, and w ij Indicates the weight of the j-th feature word in the i-th document, i and j are natural numbers, 1≤i≤m, 1≤j≤n.
[0021] (2) Dimensionality reduction: decompose the matrix A into the pr...
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