An experimental evaluation of the assumption of independence in multiversion programming
IEEE Transactions on Software Engineering
Concurrent Exception Handling and Resolution in Distributed Object Systems
IEEE Transactions on Parallel and Distributed Systems
FTWeb: A Fault Tolerant Infrastructure for Web Services
EDOC '05 Proceedings of the Ninth IEEE International EDOC Enterprise Computing Conference
A clustering-based methodology for selection of fault tolerance techniques
ICAISC'12 Proceedings of the 11th international conference on Artificial Intelligence and Soft Computing - Volume Part II
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Web Services environment provides capabilities for effective N-version programming as there exist different versions of software that provide the same functionality. N-version programming, however, faces the significant problem of co-relation of failures in different software versions. This paper presents a solution that attempts to reduce the risk of co-relation of failures by selecting for invocation services having relatively different non-functional features. We use an ontology-driven approach to identify and store information about software features related to differences in software versions, such as: software vendor, design technology or implementation language. We present an algorithm for selection of software versions using the designed ontology. The solution was verified in a prototypical implementation with the use of an existing OWL-S API library.