Johann Daigremont

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With the emergence of Web 2.0 and the related technologies, composing services has left the traditional frontiers of enterprises. In fact, end-users need to use a certain kind of composition in different situations since Web 2.0 has brought a set of technologies making it easy to create or collaborate on new services or use others’ services, e.g., mashups.(More)
We propose a new approach for social and personalized query expansion using social structures in the Web 2.0. While focusing on social tagging systems, the proposed approach considers (i) the semantic similarity between tags composing a query, (ii) a social proximity between the query and the user profile, and (iii) on the fly, a strategy for expanding user(More)
In this paper, we describe our work in progress on Web services recommendation for services composition in a Mashup environment, by proposing a new approach to assist end-users based social interactions capture and analysis. This approach uses an implicit social graph inferred from the common composition interests of users. We describe the transformation of(More)
In this paper, we propose a new approach for services recommendation to assist services composition in a Mashup environment capturing and analyzing social interactions. This approach uses an implicit social graph inferred from the common composition interests of users. We describe in detail the transformation of users-services interactions into a social(More)
In this paper, we propose a framework to improve the relevance of awareness information about people and subjects, by adapting recommendation techniques to real-time web data, in order to reduce information overload. The novelty of our approach relies on the use of contextual information about people’s current activities to rank social updates which they(More)
On the so-called Web 2.0, numerous Social Networking Sites (SNS) have known a tremendous success as they brought new ways to communicate, interact, learn about people, and share content with them. Besides improving informal social ties, transposing Awareness to the enterprise is very promising for promoting collaboration. However, it can easily lead to(More)
In April 2010, we conducted a survey towards 256 users of real-time microblogging platforms, mostly Twitter users, in order to analyze the usage and impact of those platforms. In this report, we present the results of this survey, and discuss their explanation and possible usage improvements towards reducing information overload and interruptions. 1 Results(More)
The possession of mobile devices eased a lot our communication habits: contacting somebody in almost any situation is becoming more and more easier. However, this implies the fact that unexpected interruptions can occur that may cause discomfort to the user. A typical example is the case when an important meeting is interrupted by an unexpected phone call,(More)