La coordination d'activités coopératives est aujourd'hui une préoccupation importante dans un contexte globalisé où les équipes travaillent de plus en plus de façon distribuées dans le temps, l'espace et dans les organisations. Fournir un support sur permettant la modélisation et le contrôle de l'exécution de ces activités fait partie de nos préoccupations depuis plusieurs années. Le problème a été abordé de plusieurs façons, en particulier en essayant d'adapter les modèles issues du monde de la gestion des procédés pour tenter de leur donner des qualités de flexibilité et d'agilité aussi bien sur les modèles que sur l'exécution. Ce travail a également donné lieu à une expérimentation en situation sur la coopération pour comprendre les mécanismes humains sous-jacent à la coopération. Il a également eu pour résultat l'implantation d'un moteur de workflow flexible aujourd'hui en production.

In service-oriented environments, services are put together in the form of a workflow with the aim of distributed problem solving. Capturing the execution details of the services' transformations is a significant advantage of using workflows. These execution details, referred to as provenance information, are usually traced automatically and stored in provenance stores. Provenance data contains the data recorded by a workflow engine during a workflow execution. It identifies what data is passed between services, which services are involved, and how results are eventually generated for particular sets of input values. Provenance information is of great importance and has found its way through areas in computer science such as: Bioinformatics, database, social, sensor networks, etc. Current exploitation and application of provenance data is very limited as provenance systems started being developed for specific applications. Thus, applying learning and knowledge discovery methods to provenance data can provide rich and useful information on workflows and services. Therefore, in this work, the challenges with workflows and services are studied to discover the possibilities and benefits of providing solutions by using provenance data. A multifunctional architecture is presented which addresses the workflow and service issues by exploiting provenance data. These challenges include workflow composition, abstract workflow selection, refinement, evaluation, and graph model extraction. The specific contribution of the proposed architecture is its novelty in providing a basis for taking advantage of the previous execution details of services and workflows along with artificial intelligence and knowledge management techniques to resolve the major challenges regarding workflows. The presented architecture is application-independent and could be deployed in any area. The requirements for such an architecture along with its building components are discussed. Furthermore, the responsibility of the components, related works and the implementation details of the architecture along with each component are presented.

Made available in DSpace on 2014-07-29T14:57:48Z (GMT). No. of bitstreams: 1 Dissertacao Mestrado Luiz Loja.pdf: 2304806 bytes, checksum: 345f8fb0018e00778e9d22ef4a49b0e2 (MD5) Previous issue date: 2011-02-10 / To offer products and services, organizations need to execute business processes. The effectiveness of these processes is critical to the success of any organization. For this reason, there have been major efforts to develop techniques and tools aimed at the improvement of business processes. One of the results of these efforts are the BPMS ( textit Business Process Management Systems), software that help to define, analyze, and manage business processes. Although there are many BPMS available, current systems only provide support for running a limited set of processes. Notably, BPMS do not allow the execution of flexible processes, restricting its operations to defined processes. In addition, they do not provide a collaborative environment for process modeling. This paper presents a software architecture for management of business processes that overcomes these limitations of current BPMS. The architecture was used to implement a software tool called Sinfonia which includes a metamodel for business processes, a process execution engine and a graphical process modeler. The innovative aspects of the proposals of this work include features such as support for defining and implementing flexible processes, such as empirical and textit adhoc processes, and support for modeling collaborative processes. Sinfonia has enough expressive power to define and implement key business process standards described in the literature. The ability of this tool to express flexible processes and to promote collaboration in the modeling of business processes were evaluated in an experiment involving fourteen participants. The results of this experiment provide evidence that Sinfonia contributes to the evolution of BPMS. / Para realizar serviços e produtos, as organizações precisam executar processos de negócio. A efetividade destes processos é um fator crítico para o sucesso de qualquer organização. Por essa razão, tem havido grandes esforços para o desenvolvimento de técnicas e ferramentas dirigidas para a melhoria de processos de negócio. Um dos resultados produzidos por esses esforços são os BPMS (Business Process Management Systems), softwares que auxiliam a definição, análise, e gerenciamento de processos de negócio. Embora existam diversos BPMS disponíveis, os sistemas atuais apenas provêem suporte à execução de um conjunto limitado de processos. Notadamente os BPMS não permitem a execução de processos flexíveis, restringindo sua atuação aos processos definidos. Além disso, eles não proporcionam um ambiente colaborativo de modelagem de processos. Este trabalho apresenta uma arquitetura de software para gerência de processos de negócio que supera essas limitações dos BPMS atuais. A arquitetura foi empregada para a implementação de uma ferramenta de software denominada Sinfonia, que contempla um metamodelo de processos de negócio, uma máquina de execução de processos e um modelador gráfico de processos. Os aspectos inovadores das propostas do presente trabalho abrangem características como o suporte à definição e execução de processos flexíveis, tais como processos empíricos e ad hoc, e o apoio à modelagem colaborativa de processos. A ferramenta Sinfonia tem poder de expressão suficiente para definir e executar os principais padrões de processos de negócio descritos na literatura. A capacidade dessa ferramenta de expressar processos flexíveis e de promover a colaboração na modelagem de processos de negócio foram avaliadas em um experimento envolvendo quatorze participantes. Os resultados desse experimento provêem evidências de que Sinfonia contribui para a evolução dos BPMS.