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Provisioning Heterogeneous and Unreliable Providers for Service Workflows

Provisioning Heterogeneous and Unreliable Providers for Service Workflows
Provisioning Heterogeneous and Unreliable Providers for Service Workflows
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.
1452-1458
Stein, Sebastian
cb2325e7-5e63-475e-8a69-9db2dfbdb00b
Jennings, N. R.
ab3d94cc-247c-4545-9d1e-65873d6cdb30
Payne, Terry R.
0bb13d45-2735-45a3-b72c-472fddbd0bb4
Stein, Sebastian
cb2325e7-5e63-475e-8a69-9db2dfbdb00b
Jennings, N. R.
ab3d94cc-247c-4545-9d1e-65873d6cdb30
Payne, Terry R.
0bb13d45-2735-45a3-b72c-472fddbd0bb4

Stein, Sebastian, Jennings, N. R. and Payne, Terry R. (2007) Provisioning Heterogeneous and Unreliable Providers for Service Workflows. Twenty-Second Conference on Artificial Intelligence (AAAI-07), Vancouver, BC, Canada. 22 - 26 Jul 2007. pp. 1452-1458 .

Record type: Conference or Workshop Item (Paper)

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.

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More information

Published date: 2007
Additional Information: Event Dates: 22–26 July 2007
Venue - Dates: Twenty-Second Conference on Artificial Intelligence (AAAI-07), Vancouver, BC, Canada, 2007-07-22 - 2007-07-26
Organisations: Agents, Interactions & Complexity

Identifiers

Local EPrints ID: 263918
URI: http://eprints.soton.ac.uk/id/eprint/263918
PURE UUID: ba88529e-16d6-48a4-b2d8-a49af2641c8b
ORCID for Sebastian Stein: ORCID iD orcid.org/0000-0003-2858-8857

Catalogue record

Date deposited: 24 Apr 2007
Last modified: 15 Mar 2024 03:30

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Contributors

Author: Sebastian Stein ORCID iD
Author: N. R. Jennings
Author: Terry R. Payne

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