Provisioning Heterogeneous and Unreliable Providers for Service Workflows


Stein, Sebastian, Jennings, N. R. and Payne, Terry R. (2007) Provisioning Heterogeneous and Unreliable Providers for Service Workflows. In, Twenty-Second AAAI Conference on Artificial Intelligence, Vancouver, Canada, 22 - 26 Jul 2007. AAAI Press, 1452-1458.

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Description/Abstract

Service-oriented technologies enable software agents to dynamically discover and provision remote services for their workflows. Current work has typically assumed these services to be reliable and deterministic, but this is unrealistic in open systems, such as the Web, where they are offered by autonomous agents and are, therefore, inherently unreliable. To address this potential unreliability (in particular, uncertain service durations and failures), we consider the provisioning of abstract workflows, where many heterogeneous providers offer services at differing levels of quality. More specifically, we show that service provisioning is NP-hard, and then devise two heuristic strategies that use service redundancy in a flexible manner to address uncertainty and failure. In empirical experiments, we show that these heuristic strategies can achieve significant improvements over standard approaches in a wide range of environments.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: 22–26 July 2007
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Agents, Interactions & Complexity
ePrint ID: 263918
Date Deposited: 24 Apr 2007
Last Modified: 27 Mar 2014 20:08
Publisher: AAAI Press
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/263918

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