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Research on Retrieval Technology in Search Engine

Author: YueShun
Tutor: DingZhenGuo
School: Xi'an University of Electronic Science and Technology
Course: Computer System Architecture
Keywords: Search engine Retrieval model Querier Caching mechanism
CLC: TP391.3
Type: Master's thesis
Year: 2008
Downloads: 143
Quote: 3
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Abstract


With the rapid development of the Internet , search engines have become the people access to information essential tools . Retrieval technology as one of the core technology of the search engine , the accuracy of the information , quickly access and play a crucial role . Avoid traditional vector space model based on an improved vector space model , the model adequately consider the structure of the document on the importance of the word , using the model to calculate the similarity of the vector space model check full- rate and high precision shortcomings. Retrieval model and cache technology research based on the two parts of the query and the caching mechanism was designed and implemented an efficient retrieval system , the retrieval system : Query to achieve a simple and complex queries query methods ; caching mechanism to develop based on two basic caching strategy LRU and LFU cache hash table lookup algorithm to improve the efficiency of cache lookup . The experimental results show that the retrieval performance and cache performance of the retrieval system designed in this paper , have reached a practical level .

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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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