The University of Edinburgh and research sponsors are authorised to reproduce and distribute reprints and on-line copies for their purposes notwithstanding any copyright annotation hereon. The views and conclusions contained herein are the author’s and shouldn’t be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of other parties.This paper describes our efforts to provide a collaborative problem solving architecture\ud driven by semantic-based workflow orchestration and constraint problem solving.\ud These technologies are based on shared ontologies that allows two systems of very different natures to communicate, perform specialised tasks and achieve common goals.\ud We give an account of our approach for the workflow assisted collaboration with constraint solving capabilities. We found that systems built with semantic (web) based\ud technologies is useful for collaboration and flexible to enhance the system with specialised capabilities. However, much care must be exercised before correct semantics\ud may be exchanged and collaborations occur smoothly
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