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2015  Cloud Architecture of Traffic Mining Systems under Privacy Preservation  単独  2015/07/15 
27th European Conference on Operational Research (EURO2015)   

概要(Abstract) n Japan, there exist several independent traffic management systems, which have been developed by different expressway companies and organizations. These management systems partially exchange traffic data each other. During several decades, in order to increase the accuracy of traffic monitoring data, various devices and sensors have been developed, such as supersonic wave detectors, image sensors, ETC and others. Currently, it is becoming important to directly monitor traffic data by probe vehicles, including speed, acceleration, location, and other attributes. In order to analyze traffic data dynamically, it is important to collect probe vehicle data widely and totally. But there are privacy issues to probe vehicle data, it is so hard to directly store data into traffic management systems on commercial public clouds. In this presentation, we propose a cloud architecture of traffic mining system under privacy preserving conditions. Secondly, we try to implement a
prototype system of privacy preserving clouds by using CMS software and GPL software "HElib’, which is a fully homomorphic encryption library in C++ and the NTL mathematical library. Finally, we evaluate performance of traffic data mining in our proposed cloud architecture. As a result, in the near future, different organizations will be able to exchange traffic data by using data cloud with privacy preservation. 

備考(Remarks) http://www.theorsociety.com/ygu575kjg/EURO2015_Programme_Handbook_FINAL_for_USB.pdf 

2014  Advanced traffic monitoring system by probe vehicles under privacy preservation  単独  2014/07/17 
20th Conference of the International Federation of Operational Research Societies.  , IFORS   

概要(Abstract) It is increasingly important to correctly measure traffic data by probe vehicles, including speed, acceleration, location, and other data. In our previous researches, we propose that it is possible to be accurately monitored vehicle traffic by integration of supersonic wave detection devices and highway patrol vehicles equipped GPS transceivers. In this paper, we discuss accuracy of traffic volume and flows depending on density of probe vehicles. Furthermore, under privacy preserving conditions, we propose an architecture of traffic management system using our proposed methods. 

備考(Remarks)  

2013  学生主導型総括的授業評価の提案:アンケート構成フレームワークの再構築  未設定  2013/09/05 
私立大学情報教育協会 平成25年度教育改革ICT戦略大会  , 私立大学情報教育協会   

概要(Abstract)  

備考(Remarks) http://www.juce.jp/LINK/taikai/13happyo/t_happyo_schedule.pdf
 

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