Method and device for searching webpages according to sentence serial numbers

Abstract

The invention discloses method and device for searching webpages according to sentence serial numbers. The method comprises the following steps of: A, obtaining a plurality of webpages and downloading to a webpage database; B, carrying out sentence segmentation on the plurality of webpages and respectively distributing serial numbers for sentences of each webpage; C, making a forward index table including sentence serial numbers; D, making an inverted index table including the sentence index numbers; E, inputting a search item and segmenting the search item into at least one key letter, one key word or a punctuation mark; and F, calculating a sequencing weight value of a webpage including the key letter, the key word or the punctuation mark according to the inverted index table and outputting search results. By adopting the method and the device of the invention, the sequencing weight value of webpages with zero distances or smaller distances among sentences including the key letter, the keyword or the punctuation mark can be increased, thereby putting the ranking of the webpages forwards to increase the search satisfaction of users.

Description

technical field [0001] The invention relates to the fields of information retrieval and natural language processing, in particular to a method and device for searching webpages according to sentence serial numbers. Background technique [0002] Existing mainstream search engines, such as Google, Yahoo, Baidu, etc., all search by keywords or keywords. The index structures of these search engines all necessarily include keywords or key words. [0003] At the Seventh World Wide Web Conference in 1998, Sergey Brin and Lawrence Page published a paper titled "The Anatomy of a Large-Scale Hypertextual Web Search Engine", which disclosed the index structure of the Google search engine. Both the forward index table and the backward index table of the Google search engine include the position information of the first 4K words, words or punctuation marks in the web page downloaded by the search engine. [0004] The patent number is ZL01109132.0, and the invention patent titled "Metho...

AI Technical Summary

Problems solved by technology

However, the sentence distance of decomposed keywords, keywords or punctuation marks in a certain web page cannot be directly obtained, that is, the absolute value of the difference between the sequence numbers of sentences

It can be seen that the existing search engines cannot guarantee that the sentence distance is zero (keywords, keywords or punctuation marks are located in the same sentence) or the sentence distance is small (keywords, keywords or punctuation marks are located in adjacent sentences or are closer to each other) sentences) the top ranking of web pages

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