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Displaying 1-12 out of 12 total
Multi-agent Negotiation for User-centric Elasticity Management in the Cloud
Found in: 2013 IEEE/ACM 6th International Conference on Utility and Cloud Computing (UCC)
By Amro Najjar,Xavier Serpaggi,Christophe Gravier,Olivier Boissier
Issue Date:December 2013
pp. 357-362
Application Service Providers (ASP) are increasingly adopting the cloud computing paradigm to provision remote resources for their applications. Elasticity management solutions have been proposed in the domain to enable flexible and autonomic cloud resourc...
Towards an Expressive and Scalable Twitter's Users Profiles
Found in: 2013 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT)
By Julien Subercaze,Christophe Gravier,Frederique Laforest
Issue Date:November 2013
pp. 101-108
Microblogging websites such as Twitter produce tremendous amount of data each second. Consequently, real-time recommendation systems require very efficient algorithm to quickly proceed this massive amount of data. In this paper we propose a scalable and ex...
Quality of Experience, a Very Personal Experience!
Found in: 2013 24th International Workshop on Database and Expert Systems Applications (DEXA)
By Antoine Lavignotte,Christophe Gravier,Julien Subercaze,Jacques Fayolle
Issue Date:August 2013
pp. 231-235
At the Pervasive Computing area, end users expect to receive a multimedia service with an acceptable quality, anytime, and anywhere. Measuring this acceptability is usually referred to Quality of Experience (QoE). Unlike Quality of Service (QoS) which focu...
Adaptive System for Collaborative Online Laboratories
Found in: IEEE Intelligent Systems
By Christophe Gravier,Jacques Fayolle,Jérémy Lardon,Martin J. O'Connor
Issue Date:July 2012
pp. 11-17
Group activities are important aspects of the traditional laboratory experience. A framework using Semantic Web technologies supports collaborative strategies for online laboratories as well.
Interactive multimedia for engineering tele-operation
Found in: Multimedia and Expo, IEEE International Conference on
By Benjamin Jailly,Marius Predd,Christophe Gravier,Jacques Fayolle
Issue Date:July 2011
pp. 1-6
Online Engineering allows users to perform tele-operation over the Internet. It is used in collaboratories, distance learning curriculum, and remote maintenance processes. Tele-operation over the Internet is however restrained by the development time and c...
Towards a unified device characteristics retrieval and propagation: Context proxy presentation
Found in: Multimedia and Expo, IEEE International Conference on
By Jeremy Lardon, Christophe Gravier, Jacques Fayolle
Issue Date:July 2010
pp. 1342-1346
Pervasive computing had brought the “anytime / anywhere” paradigm for information consumption. Moreover, given the tremendous amount of information and services available on the Web among the evolution of the social Web, more and more display units are bei...
The User-Centric Vision Matches Credentials Exchanges
Found in: Availability, Reliability and Security, International Conference on
By Mikaël Ates, Jacques Fayolle, Christophe Gravier, Jeremy Lardon
Issue Date:March 2009
pp. 870-876
The users must face two main concerns in their digital lives, interactions and privacy, especially in identity federation architectures. Their environment and requestor client largely influence these concerns. A rich user environment issued from a user-cen...
A hashtags dictionary from crowdsourced definitions
Found in: 2014 IEEE 30th International Conference on Data Engineering Workshops (ICDEW)
By Merieme Ghenname,Julien Subercaze,Christophe Gravier,Frederique Laforest,Mounia Abik,Rachida Ajhoun
Issue Date:March 2014
pp. 39-44
Hashtags are user-defined terms used on the Web to tag messages like microposts, as featured on Twitter. Because a hashtag is a textual word, its representation does not convey all the concepts it embodies. Several online dictionaries have been manually an...
Context awareness as a Service for Cloud Resource Optimization
Found in: IEEE Internet Computing
By Christophe Gravier,Julien Subercaze,Amro Najjar,Frederique Laforest,Xavier Serpaggi,Olivier Boissier
Issue Date:December 2013
pp. 1
Cloud computing architectures involve different actors which we divide into four categories : IaaS providers, PaaS providers, PaaS clients and end users. Contracts are established between actors, and each actor intends to optimize its costs. We advocate th...
The twitaholic next door.: scalable friend recommender system using a concept-sensitive hash function
Found in: Proceedings of the 21st ACM international conference on Information and knowledge management (CIKM '12)
By Christophe Gravier, Jimi Fontaine, Julien Subercaze, Nabil Benmira, Patrick Bamba
Issue Date:October 2012
pp. 2275-2278
In this paper we present a Friend Recommender System for micro-blogging. Traditional batch processing of massive amounts of data makes it difficult to provide a near-real time friend recommender system or even a system that can properly scale to millions o...
Smart places: multi-agent based virtual community management system
Found in: Proceedings of the 4th International Workshop on Web Intelligence & Communities (WI&C '12)
By Christophe Gravier, Muhammad Fahad, Olivier Boissier, Pierre Maret
Issue Date:April 2012
pp. 1-4
Virtual Communities (VC) are synergetic digital spaces to build collaborations and exchange knowledge between people sharing similar interests or goals. They respond to human needs such as information sharing, friendship, and recreation. In this paper, we ...
Interactive mixed reality for collaborative remote laboratories
Found in: Proceedings of the third international ACM workshop on Multimedia technologies for distance learning (MTDL '11)
By Benjamin Jailly, Christophe Gravier, Jacques Fayolle, Marius Preda
Issue Date:December 2011
pp. 1-6
In distance learning, remote laboratories (henceforth RLabs), allow students to perform real-time tasks on laboratories over the Internet. However, existing tele-operations systems suffer from both the low fidelity of the representation of the remote site ...