IT service operations management (ITSOM) comprises the planning, development, and maintenance of IT services to customers. Although many industry standards like ISO 20000 have been developed, the field is lacking established methods for efficient IT service management, i.e., for dynamic workload management, resource allocation, and service management. We develop optimization models and methods to support tasks such as adaptive prioritization mechanisms, server consolidation, dynamic capacity and workload management, performance prediction, and dimensionality reduction in data centers.
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T. Setzer and A. Stage. Filtering multivariate workload - non-conformance in large it-infrastructures. In 12th IFIP/IEEE Int. Symposium on Integrated Network Management, Dublin, Ireland, 2011. IEEE Publishing. T. Setzer and A. Stage. Decision support for virtual machine reassignments in enterprise data centers. In Workshop on IEEE Business-Driven IT Management, Osaka, Japan, 2010. [ link ] C. Markl and O. Hühn. Evaluation of prioritization in performance models of dtp systems. In 11th IEEE Conference on Commerce and Enterprise Computing, Vienna (Austria), July 20-23 2009. [ link ] T. Setzer. Data center workload consolidation based on truncated singular value composition of workload profiles. In WITS 2009, Phoenix, USA, 2009. [ link | pdf ] A. Stage and T. Setzer. Network-aware migration control and scheduling of differentiated virtual machine workloads. In Workshop on Software Engineering Challenges in Cloud Computing at ICSE 2009, Vancouver, Canada, 2009. [ link | pdf ] A. Stage, T. 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Expert querying and redirection with rule responder. In International ExpertFinder Workshop: FEWS2007 (Finding Experts on the Web with Semantics) at ISWC'07, Busan, Korea, 2007. R. Brandl. Services and resource profiles as metrics for the allocation of it infrastructure costs. In 8. Internationale Tagung Wirtschaftsinformatik, Karlsruhe, Germany, 2007. O. Hühn and C. Breitbarth. Performance modelling for sla-compliant but cost-effective it-service provisioning. In Workshop on Information Technologies & Systems (WITS 2007) at the International Conference on Information Systems (ICIS 2007), Montreal, Canada, 2007. O. Hühn and C. Markl. Permoto - performance modelling tool suite. In Workshop on Information Technologies & Systems (WITS 2007) at the International Conference on Information Systems (ICIS 2007), Montreal, Canada, 2007. A. Paschke and A. Alghamdi. Rbsla based implementation for architectural management laws. In 4th International Conference on Innovations in Information Technology (Innovations 07), Dubai, United Arab Emirates, 2007. A. Paschke, H. Boley, K. A., and B. Craig. Rule responder: Ruleml-based agents for distributed collaboration on the pragmatic web. In 2nd International Conference on the Pragmatic Web, Tilburg, Netherlands, 2007. A. Paschke, A. Kozlenkov, and H. Boley. A homogenous reaction rules language for complex event processing. In International Workshop on Event Drive Architecture for Complex Event Process (EDA-PS 2007), Vienna, Austria, 2007. A. Paschke and M. Schröder. Inductive logic programming for bio-informatics in prova. In 2nd Workshop on Data Mining in Bioinformatics (DMB 2007), Vienna, Austria, 2007. B. Speitkamp, M. Bichler, and T. Setzer. Capacity planning for virtualized it service infrastructures. In POMS, editor, College of Service Operations 2007 Conference, London, U.K., 2007. [ link ] A. Andreakis, A. Paschke, A. Benlian, M. Bichler, and T. Hess. Semantic web technologies for content reutilization strategies in publishing companies. In International Conference on Web Information Systems and Technologies (WEBIST06), Setubal, Portugal, 2006. M. Bichler, T. Setzer, and B. Speitkamp. Capacity planning for virtualized servers. In Workshop on Information Technologies and Systems, Milwaukee, Wisconsin, USA, 2006. [ pdf ] R. Brandl. Reinraum-messungen zur verrechnung von it-anwendungen. In Multikonferenz Wirtschaftsinformatik 2006, Passau, Germany, 2006. A. Paschke. Verification, validation and integrity of distributed and interchanged rule based policies and contracts in the semantic web. In Int. Semantic Web and Policy Workshop (SWPW'06), Athens, Georgia, USA, 2006. A. Paschke. A typed hybrid description logic programming language with polymorphic order-sorted dl-typed unification for semantic web type systems. In Int. Workshop OWL: Experiences and Directions 2006 (OWLED'06), Athens, Georgia, USA, 2006. A. Paschke. Rule-based knowledge representation for service level agreements. In Doctoral Symposium at MATES'06, Essen, 2006. A. Paschke. Eca-ruleml/eca-lp: A homogeneous event-condition-action logic programming language. In International Conference of Rule Markup Languages (RuleML'06), Athens, Georiga, USA, 2006. Short Paper. A. Paschke, J. Dietrich, A. Giurca, G. Wagner, and S. Lukichev. On self-validating rule bases. In International Semantic Web Enabled Software Engineering Workshop (SWESE'06), Athens, Georgia, USA, 2006. A. Paschke, A. Kozlenkov, H. Boley, M. Kifer, S. Tabet, M. Dean, and K. Barrett. Reaction ruleml. In 9th International Business Rules Forum, Washington DC, USA, November 2006. A. Paschke and E. Schnappinger-Gerull. A categorization scheme for sla metrics. In MKWI 2006 Track on Service-oriented e-Commerce (MKWI), volume 80 of Lecture Notes in Informatics, Passau, Germany, 2006. A. Paschke. Rbsla - a declarative rule-based service level agreement language based on ruleml. In International Conference on Intelligent Agents, Web Technology and Internet Commerce (IAWTIC 2005), Vienna, Austria, 2005. A. Paschke and M. Bichler. Sla representation, management and enforcement - combining event calculus, deontic logic, horn logic and event condition action rules. In IEEE International Conference on e-Technology, e-Commerce and e-Service (EEE'05), pages 158–163, Hong Kong, China, 2005. A. Paschke, M. Bichler, and J. Dietrich. Contractlog: An approach to rule based monitoring and execution of service level agreements. In International Conference on Rules and Rule Markup Languages for the Semantic Web (RuleML 2005), volume LNCS, pages 209–217, Galway, Ireland, 2005. Springer. A. Paschke and J. Dietrich. On the test-driven development and validation of business rules. In 4th International Conference on Information Systems Technology and its Applications (ISTA'2005), volume LNI Vol P, pages 31–48, Palmerston North, New Zealand, 2005. Gesellschaft fuer Informatik. A. Paschke, J. Dietrich, and K. Kuhla. A logic based sla management framework. In 4th International Semantic Web Conference (ISWC 2005), pages 68–84, Galway, Ireland, 2005. A. Paschke, C. Kiss, and S. Al-Hunaty. A pattern language for decentralized coordination and negotiation protocols. In IEEE International Conference on e-Technology, e-Commerce and e-Service (EEE'05), pages 404–407, Hong Kong, China, 2005. T. Setzer and M. Bichler. Revenue management models for it service providers using virtualization techniques. In INFORMS annual meeting 2005, San Francisco, USA, 2005. T. Setzer and M. Bichler. Ertragsmanagementmodelle für virtualisierte it-infrastukturen. In Operations Research 2005, Bremen, Germany, 2005. R. Brandl. Resolving it chargeback heterogeneity - an architecture-based approach. In J. S. Constantinos, editor, First International Conference on Enterprise Systems and Accounting, pages 193–203, Thessaloniki, Greece, 2004.