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    政大機構典藏 > 理學院 > 資訊科學系 > 期刊論文 >  Item 140.119/14984
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/14984


    Title: Allocation of Signature File on Parallel Device for WWW Index Servers
    Authors: 沈錳坤
    Man-Kwan Shan
    李素瑛
    Suh-Yin Lee
    Keywords: signature file,error correcting code,disk allocation,information retrieval
    Date: 1999-03
    Issue Date: 2008-12-16 16:40:01 (UTC+8)
    Abstract: Signature files are widely used in information retrieval and database. They act as search filters for content-based retrieval. In a large database server, a parallel device is utilized to achieve concurrency access. Efficient allocation of signature files on parallel devices minimizes the query response time and is important in the design of access methods for large scale index servers. We have developed an algorithm to organize the storage of signatures in parallel secondary storage to reduce the query response time. First, signature file is clustered into signature pages. Then, the clustered signature pages are distributed among the disks using the parity check matrix of error correcting code in coding theory. Through the construction of error correcting code, the least frequently simultaneously accessed pages are allocated on the same disk. Performance analysis shows that this algorithm improves the efficiency of access.
    Relation: Journal of Information Science and Engineering, 15(2), 199-215
    Data Type: article
    Appears in Collections:[資訊科學系] 期刊論文

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