Data Placement for Wireless Broadcast Under New Affinity Model

• Main Authors: Ming-hao Tsai, 蔡閔皓
• Other Authors: Der-chian Tsaih
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/80156542545919556514

碩士 === 南華大學 === 資訊管理學研究所 === 93 === 　　In order to adapt to a large number of client can receive data quickly, data placement in wireless broadcast environment act an importance role. For System with multipoint queries, data records which queried by same query are broadcasted contiguously to reduce the average access time. Several techniques have been used in clustering the data by defining the affinity between the data records. The data affinity function defined was mainly aiming at minimizing Query Distance. However, in order to minimize the average access time, we propose a Minimum Gap which merge relevant segments base on affinity function. Through experiments, the result show not only the query’s access time can be reduced by using our affinity function.