Congress 941
Author/s
  • Pablo Rodriguez-Mier, Manuel Mucientes, Manuel Lama
DOI
Source
  • International Conference on Web Services. Nueva York, Estados Unidos. 2015

A Hybrid Local-Global Optimization Strategy for QoS-Aware Service Composition

This paper presents a hybrid approach for automatic composition of Web services that generates semantic input-output matching compositions minimizing the number of services and optimizing the global QoS. The proposed approach has four main steps: 1) generation of the composition graph for a request; 2) computation of the optimal QoS of the composition graph; 3) multi-step optimizations of the graph to identify equivalent and dominated services; and 4) hybrid local-global search to extract the optimal QoS with the minimum number of services. A validation with the datasets of the Web Service Challenge 2009-2010 is also provided.
Keywords: Service Composition, Quality-of-Service, QoS, QoS Optimization
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