大規模コンテキストアウェアサービスのためのReteアルゴリズムを用いた地理的コンテンツ配信手法

概要

論文の詳細を見る
In this paper, we propose a geographical content delivery method that is suitable for large-scale context-aware services. Our method assumes geographically distributed and huge number of contents which include sensors, restaurant information etc. To treat context-aware content delivery, our method reasons contexts and filters effective contents on the basis of specific rules. The rules are processed using Rete algorithm and Rete network is constructed on the distributed nodes. The processes in the Rete network are distributed by dividing entire world into geographical blocks. The process assignment to nodes are based on the rules and geographical blocks using DHT (Distributed Hash Table). The proposed method reduces the redundancy that occurs when same requests are issued from different users, by sharing the results of reasoning including intermediate results. We evaluated our proposed method by simulations and confirmed that it can distribute the communication loads among nodes in network and reduces processes by utilizing the processed results.