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Failure recovery of world-altering composite semantic services - a two phase approach

Composite Web services are self-evidently failure-prone. A recovery process is required to survive the execution flow. We propose a method to recover a composite service from a failure. The method replaces a subdigraph of a composite service with its semantically similar one. Our work is motivated by a marked trade-off of multiple needs, i.e. to increase the replacement probability in a minimum delay, a high accuracy and yet no compromise in quality of service. To address the issues, we 1) broaden the subdigraph elimination starting point to even well-executed world-altering services, 2) calculate the prerequisites in an offline phase, and 3) rank the candidate replacements. Our preliminary result shows the efficiency of our method.