Efficient Keyword Search in Hybrid Chord Network
Jinlin Wang · Jisuanji gongcheng · 2008
DHT-based Chord network performs exact matching of files. Inverted index is proposed to implement keyword-based search in Chord while there is a big problem for common Keywords. HIKEC is an IMS-based mobile P2P file sharing service architecture that implements hybrid Chord overlay network. According to the hybrid Chord network and based on inverted index. This paper implements three methods: cluster window mapping,rare keyword query first and hot spot trace-back,to realize efficient keyword search. Simulation shows that mean mapping-load,based on above methods,decreases to 54.6% of which is based on the original inverted index,meanwhile,mean signaling-load decreases to 10.3%.