Research and Technology Session @ SemanticDays

13:00 - 16:00, June 2, 2010

Organized by Dumitru Roman, SINTEF, Norway
Target audience: Researchers, engineers, and students

13:00 - 13:45 Towards an onotlogical foundation for services science by Nicola Guarino, ISTC-CNR Laboratory for Applied Ontology, Italy

  • Abstract: Most of the efforts conducted on services nowadays are focusing on aspects related to data and control flow, often disregarding the main goal of the future Internet of services, namely to allow the smooth interaction of people and computers with services in the actual world. Our main claim is that it is crucial, to achieve such goal, to build a global service framework able to account for complex processes involving people and computers, which however have always people at their ends. That’s why in this work we mostly emphasize the role of social and business-oriented services, whose consideration is needed to evaluate the global quality of e-services in relation to their ultimate social benefits, taking the overall impact on the organizational structure into account. Along these lines, the contribution of this proposal is a first concrete step towards a unified, rigorous and principled ontology centered on the notion of service availability, which results in useful distinctions between service, service content, service delivery and service process. Services are modeled by means of a layered set of interrelated events, with their own participants as well as temporal and spatial locations.

13:45 - 14:30 Semantic Technologies: Exploiting deduction and abduction services for information retrieval, by Ralf Moeller, Hamburg University of Technology, Germany

  • Abstract: The presentation will highlight how formal logical representations can be used for information retrieval purposes in indefinite contexts such as, e.g., multimedia information systems. In these contexts, data is inherently unstructured and under-determined, and statements which cannot be derived to hold cannot be assumed to be false (in particular if data is provided incrementally, which is often the case). Furthermore, not knowing concrete names for objects set into relation to a certain object at a specific point in time cannot be handled by assuming that they do not exist, or by even signalling an exception. The presentation shows how expressive logical representation formalisms can nevertheless be used to provide certain answers. We will also show how additional data descriptions can be systematically derived such that symbolic structures better represent which meaning a set of data has for humans in a certain context.

14:30 - 14:50 Applicability of Semantic Technologies in Security, Privacy and Trust by Mohammad Chowdhury, UNIK-University Graduate Center at Kjeller, Norway

  • Abstract: Secure and privacy aware access can be achieved through access control mechanism. There are challenges in the specification of flexible, personalized and granular access constraints. These concerns can be addressed by the semantic technologies through the formal knowledge representation, rule-based constraint specification and automated reasoning capabilities. Such semantic access control mechanism can be applied not only on the Web but also in the context of devices. This talk provides an architectural overview of the mechanism including a brief presentation of the research results and some of the research challenges.

14:50 - 14:55 Break

14:55 - 15:40 Reasoning in Situation-aware Applications by Steffen Lamparter, Siemens, Germany

  • Abstract: Situation-aware applications assist humans in managing complex fast-changing systems. They constantly monitor the system behavior using various kinds of sensors, trigger events based on certain sensor observations, identify causal and temporal correlation between those events to recognize the current system situation, and finally infer appropriate reactions on the observed situations. In this talk, the need for situation-aware applications is motivated by discussing scenarios in various industries such as production control, ambient assisted living and building management. Furthermore, an architectural blueprint for situation-aware applications is presented and the required logical reasoning methods are discussed focusing on challenges such as stream data processing, temporal reasoning within semantic domain models, and realizations on embedded devices.

15:40 - 16:00 DataStorm - An Ontology-driven Framework for Design and Deployment of Data-intensive Dataflows, by Tomasz Wiktor Wlodarczyk, Department of Electrical Engineering and Computer Science, University of Stavanger, Norway

  • Abstract: Using the Semantic Web ontology language OWL and the Hadoop platform we have developed a number of models and associated software tools that provide an end-to-end solution for designing and deploying Hadoop-based dataflows. Basing on OWL this solution supports construction of detailed models of data dependencies and their validation. It also enables generation and deployment of dataflows on Hadoop cluster from those models.
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