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Literature search engine technology Research and Implementation

Author: JiangYan
Tutor: ChenMei
School: Guizhou University
Course: Computer Applications
Keywords: document retrieval hybrid index structure vector model expectation of retrieval recall precision
CLC: TP391.3
Type: Master's thesis
Year: 2009
Downloads: 67
Quote: 0
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Abstract


With the rapid development of Internet technologies, the type and amount of literature information resources are significantly increasing, how to use these resources become more important, a wide range of literature search platform will be used. Literature retrieval system based on matching keywords, this method only match words like ’and, or, non-’ in isolation, not able to fill the expectations of users of the search, and search results display is random, increased expectations of users to access the difficulty of literature. In the index to establish, use a single word or single character to establish index will be lead to the resulted of search recall is too large. The main contents of the article include two points:·A new method of hybrid index use the single characters and the logical location of single Chinese characters appear in the literature, this method will reduce the documents size.·The method is based on sort the search results of literature search, this algorithm according to account of the user’s search habits and the characteristics of Chinese literature, and order the values of expectations in descending.Those two methods above have been achieved. In this way, those methods improve the efficiency of the system and ensure the rate of recall and precision to meet user requirements.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Retrieval machine
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