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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/92467

    Title: 行動電話使用者之週期性行為探勘
    Other Titles: Data Mining for the Periodic Calling Behavior of Mobile Phone Users
    Authors: 張寧俊;莊淇銘;王耀德;鄭育欣
    Contributors: 淡江大學資訊工程學系
    Keywords: 行為預測;資料探勘;週期性樣式;Behavior Prediction;Data Mining;Periodic Pattems
    Date: 2005-04
    Issue Date: 2013-10-15 14:12:09 (UTC+8)
    Publisher: 臺北縣:淡江大學國際貿易學系
    Abstract: 隨著使用行動通訊科技的大量普及,若能預測使用者的通話路徑與趨勢,則行動通訊系統業者便可以有效率地提供更高品質的服務內容。在預測使用者通話路徑的問題上,週期性是一個值得進一步研究的課題。倘若系統業者能夠暸解哪些使用者在某個時段的通話過程中,具有週期性的通話路徑樣式,則系統業者就能根據這些週期性樣式來預先配置系統資源,例如,系統的頻寬和記憶體容量等,以提升系統資源的使用效率與服務品質,進而增加企業的競爭優勢和獲利空間。
    The efficiency of mining approaches is always the focus of various data mining research. In this study, a novel data mining method introducing sampling techniques is devised to fmd the periodic moving paths more efficiently. By sampling techniques, only a small portion of data is scanned and analyzed, so as to improve the efficiency of the mining processes.
    First, a dedicated graph data structure is designed to store the information of moving paths of mobile phone users. The moving paths of mobile phone users are gathered for each time interval of periods. All information for mining moving patterns can be captured and retained in the proposed graph, and then the mining tasks can proceed in the graph.
    Second, a sampling method for discovering the moving patterns in one of the time intervals of a period is devised. The moving paths are retrieved and decomposed, and the relative information of moving paths is stored in the graph. The graph traversal algorithm is employed to fmd the moving patterns. The set of patterns obtained in this stage is a closure set of patterns in the desired period.
    Third, the moving patterns acquired in the second stage are further examined to decide the final periodic moving patterns in some predetermined period. The vector operations are used to check whether the whole or the partial discovered patterns are periodic. While all moving patterns are examined, the periodic moving patterns are gained.
    The performance evaluation for mining periodic moving patterns tells that the sampling method outperforms the na�ve mining method more significantly. The experimental results reveal that we can easily apply the sampling approach to obtain the periodic calling path patterns, which are very useful for predicting the user moving trends. As we
    can forecast the moving patterns more efficiently, the telecommunications system resources can be deployed more effectively.
    Relation: 第二屆海峽兩岸企業理論與實務學術研討會論文集,頁51-60
    Appears in Collections:[資訊工程學系暨研究所] 會議論文

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