Pierre Crescenzo

From End-User’s Requirements to Web Services Retrieval: A Semantic and Intention-Driven Approach

In this paper, we present SATIS, a framework to derive Web Service specifications from end-user’s requirements in order to operationalise business processes in the context of a specific application domain. The aim of SATIS is to provide to neuroscientists, which are not familiar with computer science, a complete solution to easily find a set of Web Services to implement an image processing pipeline. More precisely, our framework offers the capability to capture high-level end-user’s requirements in an iterative and incremental way and to turn them into queries to retrieve Web Services description. The whole framework relies on reusable and combinable elements which can be shared out by a community of users sharing some interest or problems for a given topic. In our approach, we adopt Web semantic languages and models as a unified framework to deal with end-user’s requirements and Web Service descriptions in order to take advantage of their reasoning and traceability capabilities.

Highlighting stakeholder communities to support requirements decision-making

[Context & motivation] Stakeholders participation is recognized as a key issue in the development of useful and usable systems. The Web has given rise to a growing number of collaborative working tools that facilitated the participation of stakeholders (and especially end-users). These tools create new opportunities of practice regarding requirement elicitation. [Question/problem] Nevertheless, they result in an information overload lacking structure and semantics. Consequently, requirements analysis and selection becomes more challenging. [Principal ideas/results] In this paper, we propose an approach based on semantic web languages as well as concept lattices to identify relevant groups of stakeholders depending on their past participation. [Contribution] These groups can be used to enable facilitated decision-making and handling of requirements. We detail the different steps and the possible configurations, using an example inspired by a collaborative software development environment.

Improving Collaborations in the Neuroscientist Community

In this paper, the authors present an approach called SATIS Semantically AnnotaTed Intentions for Services, relying on intentional process modeling and semantic web technologies and models, assists collaboration among the members of the neurosciences community. The main expected result of this work is to derive and share semantic web service specifications from a neuroscientists point of view to operationalise image analysis pipelines with web services.

Improving Collaborations in Neuroscientist Community

In this paper, we present a new approach, called SATIS (\emph{Semantically Annot aTed Intentions for Services}), relying on semantic web technologies and models, to assist collaboration among the members of a neurosciences community. The main expected result of this innovative work is to derive and share semantic web service specifications from neuroscientists requirements in order to perform image processing pipelines.

Le modèle OFL au service du métaprogrammeur Application à Java

OFL is the acronym for Open Flexible Languages and the name of a metamodel for object programming languages based on classes. It relies on three essential concepts of these languages: the descriptions which are a generalisation of the notion of class, the relationships such as inheritance or aggregation and the languages themselves. OFL provides a customisable definition of these three concepts in order to adapt their operational semantics to the program- mers needs. This paper summarises the main characteristics of the OFL model, shows how to create an application using this model and describes the Java language according to OFL.

Empowering Web Service Search with Business Know-How

In this paper, we propose first to start by presenting a state of the art of existing approaches about scientific workflows (including neuroscience workflows) in order to highlight business users’ needs in terms of Web Services combination. Then we discuss about intentional process modeling for scientific workflows especially to search for Web Services. Next we present our approach SATIS to provide reasoning and traceability capabilities on Web Services business combination know-how, in order to bridge the gap between workflows providers and users.

De la réutilisabilité des applications vers celle des modèles

In previous works, we proposed an approach based on aspect-oriented programming and on subject-oriented programming in order to separate and compose the concerns of an application. The objective was, through the specification of a composition protocol, to increase the reusability of classes which build up an application. In this paper we propose to make changes to this approach in order to apply it to models instead of programs. Our proposal is a first attempt whose objective is to present a first set of interesting adaptations and to validate them on an example. MOTS-CLES : separation des preoccupations, composition de modeles, programmation par sujets, MDA, ingenierie des modeles.