Towards
P2P-based Semantic Web Service Discovery with QoS Support
Le-Hung Vu, Manfred Hauswirth and Karl Aberer
Abstract
The growing number of web services advocates distributed discovery
infrastructures which are semantics-enabled and support quality of
service (QoS). In this paper, we introduce a novel approach for
semantic discovery of web services in P2P-based registries taking into
account QoS characteristics. We distribute (semantic) service
advertisements among available registries such that it is possible to
quickly identify the repositories containing the best probable matching
services. Additionally, we represent the information relevant for the
discovery process using Bloom filters and pre-computed matching
information such that search efforts are minimized when querying for
services with a certain functional/QoS profile. Query results can be
ranked and users can provide feedbacks on the actual QoS provided by a
service. To evaluate the credibility of these user reports when
predicting service quality, we include a robust trust and reputation
management mechanism.