The University of Southampton
University of Southampton Institutional Repository

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.
09574f42-3cbc-43d3-86c2-2f96eb6319a0
Stein, Sebastian
cb2325e7-5e63-475e-8a69-9db2dfbdb00b
Jennings, N. R.
ab3d94cc-247c-4545-9d1e-65873d6cdb30
Payne, Terry R.
09574f42-3cbc-43d3-86c2-2f96eb6319a0

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), 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.

Text
Stein.pdf - Other
Download (199kB)

More information

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

Identifiers

Local EPrints ID: 263918
URI: https://eprints.soton.ac.uk/id/eprint/263918
PURE UUID: ba88529e-16d6-48a4-b2d8-a49af2641c8b

Catalogue record

Date deposited: 24 Apr 2007
Last modified: 26 Feb 2019 17:32

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×