SEMINARIOS DE INVESTIGACIÓN EN INGENIERÍA INFORMÁTICA Y DE TELECOMUNICACIÓN 2007-2008

 

Actividad de Formación Continua  del Programa Oficial de Posgrado en Ingeniería Informática y de Telecomunicación

Escuela Politécnica Superior, Universidad Autónoma de Madrid

                       

jueves, 19 de Junio de 2008, 12:00

Seminario B-428, Escuela Politécnica Superior, Universidad Autónoma de Madrid

Resources as Synchronizers, Rules as Resources for Modeling Distributed Workflows

Paolo Bottoni

Dipartimento di Informatica, Sapienza Università di Roma

Resumen/Abstract

Process management for physically distributed workflows has to deal with different types of tasks and resources. However, in real situations, it is possible that task assignments and policies have to be revised due to different causes, such as communication problems or task reassignment. We propose a resource-centered view, in which both data-dependencies between tasks and plan-dependent ordering of tasks are expressed as production and consumption of resources of different types. This view is translated into a rule-based formalism, expressed in terms of multi-set rewriting for workflow enactment. In turn, rules are themselves seen as resources, so that they are prone to the same rewriting process, in order to redefine process schemas. We show how workflows expressed as activity diagrams can be translated to the proposed formalism, exploiting enforced generative patterns applied to triple graph grammars, and how redefinition of workflow processes can be through typical patterns of adaptation. The study is motivated from problems with Mobile ad hoc Networks.

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Paolo Bottoni CV

Paolo Bottoni graduated in Physics in 1988 and obtained his Doctoral Degree in Computer Science in 1995. Since 1994, he has been with the Department of Computer Science of the "Sapienza" University of Rome, first as a Researcher, and since 2000 as an associate professor. His research interests are mainly in the area of interactive computing, and include: definition of pictorial and visual languages, visual simulation, formal models of visual interactive computing, agent-based computing, multimedia applications for creative processes and fruition of cultural heritage. On these topics, he has published 130 scientific papers in international journals, contributed volumes and conference proceedings. He participated as partner, responsible or consultant in many international EC projects and national projects. On-going projects are: CHAT http://193.178.235.132:8088/chat; MIUR PRIN Project Ambient Intelligence: event analysis, sensor recofiguration and multimodal interfaces, https://avires.dimi.uniud.it/svn-prin06/. He has been in the program committee and reviewer of several conferences and international journals, program chair of several workshops and guest editor of a special issue of the Journal of Software and System Modelling. He is on the Editorial Board of the Journal of Visual Languages and Computing, and for 2008 is Program CoChair of the ACM Working Conference on Advanced Visual Interfaces, AVI 2008, and of the IEEE Symposium on Visual Languages and Human Centric Computing, VL/HCC 2008.