KDS-CM: A Cache Mechanism on Top-If Data Source for Deep Web Query

摘要

Caching is an important technique to enhance the efficiency of query processing. Unfortunately, traditional cachingmechanisms are not efficient for deep Web because of storagespace and dynamic maintenance limitations. In this paper, wepresent on providing a cache mechanism based on Top-K datasource (KDS-CM) instead of result records for deep Web query.By integrating techniques from IR and Top-K, a data reorganization strategy is presented to model KDS-CM. Also some measuresabout cache management and optimization are proposed to improve the performances of cache effectively. Experimental resultsshow the benefits of KDS-CM in execution cost and dynamicmaintenance when compared with various alternate strategies.