PROBLEM TO BE SOLVED: To output route information which is flexibly concealed by taking balance between protection of privacy information on an individual and an amount of route information into consideration.SOLUTION: An acquisition part 12 acquires trip data TD in which positions on a route from a departure point of a user to a destination are represented by a time series of point data L. A user density showing the number of users of a route obtained by making a position included in a mesh a departure point or a destination is stored in a user density storage part 20 in each mesh obtained by dividing a prescribed area into a plurality of parts. A determination part 14 determines a position on the route separate from the departure point by a first distance as a start point in accordance with the user density of a mesh including a position on the route around the departure point. The determination part 14 also determines a position on the route separate from the destination by a second distance as an end point in accordance with the user density of a mesh including a position on the route around the destination. An output part 18 outputs a time series of point data from the start point on the route to the end point as concealed trip data.

    【課題】個人のプライバシ情報の保護と、経路情報の情報量とのバランスを考慮して、柔軟に秘匿化された経路情報を出力する。【解決手段】取得部12が、利用者の出発地から到着地までの経路上の位置が、時系列のポイントデータLで表されたトリップデータTDを取得する。利用者密度記憶部20に、所定領域を複数に分割したメッシュ毎に、メッシュに含まれる位置を出発地または到着地とした経路の利用者数を示す利用者密度が記憶される。決定部14は、出発地周辺の経路上の位置が含まれるメッシュの利用者密度に応じて、出発地から第1距離離れた経路上の位置を開始点として決定する。また、決定部14は、到着地周辺の経路上の位置が含まれるメッシュの利用者密度に応じて、到着地から第2距離離れた経路上の位置を終了点として決定する。出力部18は、経路上の開始点から終了点までの時系列のポイントデータを、秘匿トリップデータとして出力する。【選択図】図1


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    Title :

    ROUTE INFORMATION PROCESSING METHOD, DEVICE, AND PROGRAM


    Additional title:

    経路情報処理方法、装置、及びプログラム


    Contributors:
    USHIDA MEBAE (author) / YAMAOKA YUJI (author) / ITO KOICHI (author)

    Publication date :

    2015-07-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES



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