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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/65819

    Title: 運用權重式字尾樹之分散式天文序列資料索引系統;Distributed Astronomical Sequential Data Indexing System with Weighted Suffix Tree
    Authors: 劉書宏;Liou,Shu-Hung
    Contributors: 資訊工程學系
    Keywords: 分散式系統;權重式字尾樹
    Date: 2014-08-27
    Issue Date: 2014-10-15 17:11:02 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 現在儲存裝置的容量愈來愈大,資料的成長速度相當快速,連帶計算所需記憶體
    體相當驚人,在以 TB 為單位來計算的天文資料來說,單一機器並無法負擔,所
    望能以此架構來維護分析所有具順序依賴性的資料串流。;Today the storage of devices becomes larger and larger. Therefore, computer needs
    more time to deal with the data which store in device. In this paper, we provide a
    method to solve the issue.
    In astronomical field, telescope will record a lot of data from universe. Because of the
    continuity of astronomical data, we use a special data structure to maintain the
    astronomical data. The special data structure is an advance suffix tree, we call it
    weighted suffix tree. However, researchers find that constructing a suffix tree spends
    huge memory space in computer system. In order to reduce the memory usage, we use
    files in disk as external memory. But the usage of external memory cause the increase
    of I/O overhead, we still have to resolve it. We design a kind of weighted suffix tree
    which can be applied on distributed system. The distributed weighted suffix tree is
    designed to help the analysis of astronomical data. In the future, we also hope this
    data structure can support any kind of data which is continuous and sequential.
    Appears in Collections:[資訊工程研究所] 博碩士論文

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