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We introduce COSTA, for content-based search using term aggregation. Besides advantages shared with other P2P-based information retrieval systems, the system has several characteristics that distinguish itself from other systems: First, an adaptive indexing scheme which can dynamically identify important terms is used. Important terms are indexed in a chord-like ring, while other terms are aggregated...
In this paper, we propose a method to support content-based search, one of the challenges in Peer-to-Peer file sharing system. The proposed method is based on a hybrid structure, which is a combination of a Chord ring and a balanced tree. The tree is used to aggregate and classify terms while the Chord ring is used to index terms of nodes in the tree. At every node in the tree, the system classifies...
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