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Selective Querying using Value of Changed Information for Adapting Hierarchical Web Service Compositions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Harney, John |
| Copyright Year | 2009 |
| Abstract | Environments in which Web service compositions (WSC) operate are often dynamic. We address the problem of which service to query for up-to-date information in order to adapt a hierarchical WSC, given that queries are not free. Previously, the value of changed information (VOC) has been proposed to select those services for querying whose revised non-functional information is expected to bring about the most change in the composition. VOC requires a distribution over the possible values of volatile parameters of the WSs. In this paper, we present an approach for utilizing VOC in the context of a WSC composed of WSs and lower level WSCs, which induces a natural hierarchy over the composition. Because parameters of composite WSs are not directly available, we aggregate these from parameters of component WSs and derive a distribution over the possible parameter values from the distributions for the WSs. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.cs.uga.edu/~jfh/Publications/papers/TR12-08.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
