Issue:Representing and querying temporal workflow schemas

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Title of paper: Representing and querying temporal workflow schemas Author(s): Hathal Al-Roki Department of Computation UMIST, Manchester PO BOX 88 M60 1QD, UK Panagiotis Chountas Mechatronics Group, Dept. of Computer Science, Univ. of Westminster, London, HA1 3TP, UK chountp@wmin.ac.uk Ilias Petrounias Department of Computation UMIST, Manchester PO BOX 88 M60 1QD, UK Vassilis Kodogiannis Mechatronics Group, Dept. of Computer Science, Univ. of Westminster, London, HA1 3TP, UK Boyan Kolev Centre for Biomedical Engineering - Bulgarian Academy of Sciences, Acad.G.Bonchev Str., Bl.105, Sofia-1113, Bulgaria bobby_kolev@yahoo.co.uk Presented at: 6th ICIFS, Varna, 13—14 Sept 2002 Published in: Conference proceedings, "Notes on IFS", Volume 8 (2002) Number 3, pages 57—65 Download:  PDF (162  Kb, File info) Abstract: Workflows are activities involving the co-ordinated execution of multiple tasks performed by entities, in the enterprise environment. Workflow systems support the encoding and execution of workflows. A workflow management system is proposed, in which a considerable attention is paid on the utilisation of the services provided by the underlying flexible database formalism. Flexible database formalisms must permit the modelling of trends, seasonality (periodicity), cyclic variations of trends and irregular activities (no predictable patterns) in the enterprise environment This paper will be restricted in workflow management system design, and activity scheduling, in a post relational environment whereas relational operators, utilise paths (links between domains), in order to express interdependencies between activities. Keywords: Temporal activities, Time model, Temporal workflows References: Panagos, E., and Rabinovich M., Reducing escalation- related costs in WFMS, NATO Advanced Study Institue on Workflow Management Systems and Interoperability, Springer Verlag, 1997 Chountas, P., Petrounias, I., Representation of Definite, Indefinite and Infinite Temporal Information, Proceedings of (IDEAS'2000), IEEE Computer Society Press-Digital Library, pp 167-178, 2000. Workflow Management Coalition, Terminology and Glossary: A Workflow Management Coalition, Brussels, 1996. Koubarakis, M., Database Models for Infinite and Indefinite Temporal Information, Information Systems, Vol. 19, No. 2, pages 141-173, 1994. Dekhtyar, A., Ross, R.,. Subrahmanian, V. S, TATA Probabilistic Temporal Databases, I: Algebra, Technical Report CS-TR-3987, Department of Computer Science, University of Maryland, USA, pp 1-81 1999. Petrounias, I., A Conceptual Development Framework for Temporal Information Systems, Proceedings of Conceptual Modelling - ER '97, Springer Verlag, pp 43-56, 1997. H. Liu, Ramamohanarao K., Algebraic Equivalences Among Nested Relational Operations, Proceedings, of ACM International Conference on Information and Knowledge Management (CIKM), pp 234-243. M. Kifer, W. Kim, Y. Sagiv, Querying Object Oriented Databases, Proceedings of ACM Symposium on Principles of Database Systems (PODS), pp 393-402, 1992. Chountas, P, Petrounias, I., Representing Temporal and Factual Uncertainty, Proceedings of FQAS 2000, in Advances in Soft Computing, Physica-Verlag Heidelberg, pp 161-170, 2000. Atanassov K., Gargov G., Elements of intuitionistic fuzzy logic, Fuzzy Sets and Systems Vol. 95,1998, No. 1, 39-52. Atanassov K., Temporal Intuitionistic Fuzzy Relations, Proceedings of FQAS 2000, in Advances in Soft Computing, Physica-Verlag Heidelberg 153-160, 2000. Citations: The list of publications, citing this article may be empty or incomplete. If you can provide relevant data, please, write on the talk page.