University of Helsinki Department of Computer Science
 

Department of Computer Science

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Guest talk by Dr. Weixiong Rao in Exactum B222 on Thursday 14th January 2010 at 14.

Title: Towards efficient information dissemination in Peer-to-Peer networks

Abstract:
The design of efficient information dissemination systems with high expressiveness is a challenging task. In this lecture, I will consider two systems that explore the tradeoff between efficiency and expressiveness. First, in distributed hash table (DHT)-based P2P networks, the proposed STAIRS framework can support the dissemination of unstructured information. The novelty of STAIRS lies in the low publication cost while providing users with the full-text content subscription capability. Secondly, the COBAS framework proposes a set of techniques for the dissemination of structured information, including selective multicast by bounding intervals, cost model-based interval division, and merging operation. COBAS can match publication messages with structured content against subscription filters with a high efficiency.

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