A scalable P2P platform for the knowledge grid

Abstract

The Knowledge Grid needs to operate with a scalable platform to provide large-scale intelligent services. A key function of such a platform is to efficiently support various complex queries in a dynamic large-scale network environment. This paper proposes a platform to support index-based path queries by incorporating a semantic overlay with an underlying structured P2P network that provides object location and management services. Various distributed indexing structures can be dynamically formed by publishing semantic objects as indexing nodes. Queries are forwarded along the chains of semantic object pointers to search for objects. We investigate the deployment of a scalable distributed trie index for broadcast queries on key strings, propose a decentralized load balancing method for solving the problem of uneven load distribution incurred by heterogeneity of loads and node capacities and by the distributed trie index, and give an approach for improving the availability of the semantic overlay and its trie index. Experiments demonstrate the scalability of the proposed platform.

An Agent Coordination Perspective on Software Ontologies with Knowledge Grid

“…The representation of software engineering concepts, software development activities [9], software models, processes, issues as well as software documentation using generic and specialize ontology representation will help to provide cognitive, clear, precise concepts and ideas, knowledge and classified issues. The ontology defines the concepts, principles, ideas, knowledge and domain assumptions explicitly, hence allows the complete interpretation and common understanding by teams.…”

A service-oriented system for distributed data querying and integration on Grids

“…Semantics-enhanced distributed query processing over largescale networks is also addressed in [29,30]. However, in such works the focus is not on semantic data integration but rather on providing a decentralized semantic overlay to support semantic search in Knowledge Grid applications.…”

“…However, in such works the focus is not on semantic data integration but rather on providing a decentralized semantic overlay to support semantic search in Knowledge Grid applications. In [29] the authors propose a platform to support complex queries in a dynamic large-scale network environment. Particularly, the system supports indexbased path queries by incorporating a semantic overlay with an underlying structured P2P network that provides object location and management services.…”

Analysis of business process integration in Web service context

“…Many researchers had made efforts to establish an unified resource model for Web entities [22]. Based on that, a Knowledge Grid environment has been set up beyond a peer-to-peer platform, where semantic overlay layer plays a critical role in offering better scalability and performance for query of semantic objects [23]. Recently, an ontology oriented Web service modeling framework was proposed in [24], and a special Web service modeling onotology working group (www.wsmo.org) has been formed.…”