Semantic intelligent information publishing and subscribing method based on P2P technology

Abstract

A semantic intelligent information publishing and subscribing method based on a P2P technology includes the steps that (1) a system topological structure is built, and a super node is set up; (2) standardization processing is carried out on high-dimensional attribute space; (3) high-dimensional data is partitioned, and a global index tree is built and maintained; (4) dimension reduction of the high-dimensional data: the node sorts through a data accumulation area assigned to self to be a multi-dimensional hypercube in the high-dimensional attribute space, uses a pyramid dimension reducing method for mapping high-dimensional data objects to one-dimensional data space and carries out indexing through the B+ tree; (5) an i-Chord method is used for managing the data objects; (6) intelligent information publishing and subscribing on the basis of semantics are achieved. The semantic intelligent information publishing and subscribing method has the advantages of being simple in principle and easy to achieve and popularize, and improving fault tolerance, dynamic nature and information distribution efficiency of a system.

Description

technical field [0001] The invention mainly relates to the field of semantic-based intelligent information interaction methods in large-scale information networks, in particular to a P2P technology-based semantic intelligent information publishing and subscribing method. Background technique [0002] With the rapid development and wide application of computer network technology, the digital resources in the network are showing an exponential growth trend, the forms of expression are becoming more and more diversified, and the user's demand for information acquisition is also increasing. Obtaining information that users are "interested in" has become a problem that people pay more and more attention to. [0003] The network environment presents the characteristics of large scale, decentralized control, loose coupling, autonomy, and dynamics. For this reason, researchers have proposed the Publish / Subscribe (hereinafter referred to as P / S) technology. The P / S system consists o...

AI Technical Summary

Problems solved by technology

[0007] To sum up, the existing publish-subscribe system has certain deficiencies in terms of dynamics, fault tolerance, self-organization, etc. At the same time, the system still has defects in expressive ability, lack of understanding of the semantics of the event itself, and cannot realize semantic-based intelligent information interaction

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