Search results for " Computer Science"
showing 10 items of 3983 documents
Enhancing Multimedia Data Fragmentation
2010
International audience
International Journal of Business Intelligence and Data Mining - Special Issue on Beyond multimedia and XML streams querying and mining
2010
International audience; Over the last decade, information has become available and reachable anywhere and everywhere. As a result, we have seen an explosion of multimedia and XML streams captured from multitudes of sources monitoring just about every aspect of life. This has lead to the emergence of a new generation of ambient and context-aware applications. Mining and querying the resulting large datasets is possibly the only way to discover information and extract new knowledge in them. One of the challenges is bridging several disciplines, such as database systems, XML and information retrieval, artificial intelligence, and multimedia processing. Thus, it has become important to understa…
Modélisation spatio-temporelle d'un réseau de transport public
2003
International audience
de-Linkability: a Privacy-Preserving Constraint for Safely Outsourcing Multimedia Documents
2013
International audience; Outsourcing social multimedia documents is a growing practice among several companies in a way to shift their business globally. It is a cost-effective process where those companies tend to gain more profits disregarding eventual privacy risks. In fact, several case studies have showed that adversaries are capable of identify-ing individuals, whose identities need to be kept private, using the content of their multimedia documents. In this paper, we propose de-linkability, a privacy-preserving constraint to bound the amount of information outsourced that can be used to re-identify the in-dividual. We also provide a sanitizing MD * -algorithm to enforce de-linkability…
Seventh International Conference on Signal-Image Technology and Internet-Based Systems, SITIS 2011
2011
International audience
Sixth International Conference on Signal-Image Technology and Internet-Based Systems, SITIS 2010, Kuala Lumpur, Malaysia, December 15-18, 2010
2010
International audience
Semantic-based Merging of RSS Items
2009
Merging XML documents can be of key importance in several applications. For instance, merging the RSS news from same or different sources and providers can be beneficial for end-users in various scenarios. In this paper, we address this issue and explore the relatedness measure between RSS elements. We show here how to define and compute exclusive relations between any two elements and provide several predefined merging operators that can be extended and adapted to human needs. We also provide a set of experiments conducted to validate our approach. © Springer Science+Business Media, LLC 2009.
Enforcing role based access control model with multimedia signatures.
2009
International audience; Recently ubiquitous technology has invaded almost every aspect of the modern life. Several application domains, have integrated ubiquitous technology to make the management of resources a dynamic task. However, the need for adequate and enforced authentication and access control models to provide safe access to sensitive information remains a critical matter to address in such environments. Many security models were proposed in the literature thus few were able to provide adaptive access decisions based on the environmental changes. In this paper, we propose an approach based on our previous work [B.A. Bouna, R. Chbeir, S. Marrara, A multimedia access control languag…
Integrating user preference to similarity queries over medical images datasets
2010
International audience; Large amounts of images from medical exams are being stored in databases, so developing retrieval techniques is an important research problem. Retrieval based on the image visual content is usually better than using textual descriptions, as they seldom gives every nuances that the user may be interested in. Content-based image retrieval employs the similarity among images for retrieval. However, similarity is evaluated using numeric methods, and they often orders the images by similarity in a way rather distinct from the user's intention. In this paper, we propose a technique to allow expressing the user's preference over attributes associated to the images, so simil…
Relating RSS News/Items
2009
Merging related RSS news (coming from one or different sources) is beneficial for end-users with different backgrounds (journalists, economists, etc.), particularly those accessing similar information. In this paper, we provide a practical approach to both: measure the relatedness, and identify relationships between RSS elements. Our approach is based on the concepts of semantic neighborhood and vector space model, and considers the content and structure of RSS news items. © 2009 Springer Berlin Heidelberg.