International Conference Papers
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Item Towards reading session-based indicators in educational reading analytics(Springer, 2015-09) Sadallah, Madjid; Encelle, Benoît; Maredj, Azze-Eddine; Prié, YannickIt is a challenging task to identify eLearning courses parts that have to be revised to best suit learners' requirements. Reading being one of the most salient learning activities, one way of doing so is to study how learners consume courses. We intend to support course authors (e.g. teachers) during courses revision by providing them with reading indicators. We use the concept of reading session to denote a learner's active reading period, and we provide several associated reading indicators. In our server-side approach, reading sessions and indicators are calculated using web server logs. We evaluate the relevance of our proposals using logs from a major French eLearning platform. Results are promising: calculated reading sessions are theoretically more precise than other best applicable approaches, and course authors consider suggested indicators to be appropriate to courses revision. Using reading sessions and associated indicators could facilitate authors' work of course reengineering.Item A Framework for Usage-based Document Reengineering(ACM New York, NY, USA, 2013-09) Sadallah, Madjid; Encelle, Benoît; Maredj, Azze-Eddine; Prié, YannickThis ongoing work investigates usage-based document reengineering as a means to support authors in modifying their documents. Document usages (i.e. usage feedbacks) cover readers' explicit annotations and their reading traces. We first describe a conceptual framework with various levels of assistance for document reengineering: indications on reading, problem detection, reconception suggestions and automatic reconception propositions, taking our example in e-learning document management. We then present a technical framework for usage-based document reengineering and its associated models for documents, annotations and traces representation.Item Extension of the Wahl-Rothermel temporal model for the multimedia documents(2007-04-12) Maredj, Azze-Eddine; Alimazighi, Zaia; Sadallah, MadjidMultimedia presentation defines composition of different media having inherent or assigned temporal behavior: text, images, animations, audio and video. Temporal composition is the most important feature of multimedia presentations because it defines the overall scheduling of temporal events. In this paper, our goal is to propose an extension of Whal and Rothermel temporal model to increase its degree of expressiveness. For that, a new delay definition is proposed.Item A flexible distance for the spatial placement in a multimedia document(Institute of Electrical and Electronics Engineers ( IEEE ), 2008-04-07) Maredj, Azze-Eddine; Tonkin, Nourredine; Sadallah, Madjid; Alimazighi, ZaiaIn the multimedia documents authoring systems the management of spatial and temporal inter-objects relations is the most delicate task. Spatial relations management refers to the appropriate means to express relations between the document objects and guarantee their consistency. Usually it is represented by spatial model which performances depend on its expressivity degree, on its positioning precision and on the ability to express a desired overlap. One of the most important factor that affects performnaces is the distance associated to the relations. To enhance the expressivity and precision degrees and to allow the specification of desired overlap, we introduce, in this paper, the flexible distance concept.Item Un modèle logique de documents pour les interactions multimédia(JTEA, 2008-05-02) Maredj, Azze-Eddine; Alimazighi, Zaia; Tonkin, Nourredine; Sadallah, MadjidLa dimension temporelle d’un document multimédia interactif confère à ses objets des comportements différents de ceux d’un document classique. De nouveaux besoins de lecture doivent être considérés pour maîtriser sa complexité de perception. Les interactions utilisateur sont une solution à ces besoins. Toutefois, dans les systèmes multimédia actuels, c’est uniquement sur les objets du document que reposent ces interactions et de plus le lecteur est réduit à un rôle passif. Dans cet article, nous proposons un modèle logique de documents multimédia où les objets ne sont plus perçus comme des entités indissociables mais peuvent être regroupés en scènes définissant des parcours de lecture selon le besoin. De plus, le lecteur peut définir ses propres parcours de lecture. Un ensemble de mécanismes d’interactions y est proposé. --------------- The temporal dimension of an interactive multimedia document confers to its objects behaviors different from those of a traditional document. New needs for reading must be considered to control its complexity of perception. The user interactions are a solution to these needs. However, in the current multimedia systems, the interactions are based only on the document objects and the reader is reduced to a passive role. In this paper, we propose a logical model for multimedia documents where the objects are no longer seen as inseparable entities but can be grouped into scenes defining paths of reading as needed. In addition, the reader can define its own paths of reading. A set of interaction mechanisms is proposed.Item A spatial model for editing multimedia documents(2010-10-18) Maredj, Azze-Eddine; Tonkin, Nourredine; Sadallah, MadjidDans le domaine de l’édition et de documents multimédia, la gestion du placement spatial des objets constitue un des points le plus délicats dans la conception de documents. Il s'agit de pouvoir exprimer les relations spatiales entre les objets et de garantir leur cohérence. Cette gestion est représentée par un modèle dont les performances se mesurent par sa puissance d’expressivité, sa précision de placement et par la spécification du recouvrement désiré. Un des éléments déterminant dans les performances d’un modèle spatial est la distance associée aux relations. Dans cet article, nous présentons une nouvelle définition de la distance qui donne un grand degré d’expressivité et de précision aux relations et permet la spécification du recouvrement désiré dans un document multimédia.Item Component-based hypervideo model: high-level operational specification of hypervideos(ACM New York, NY, USA, 2011) Sadallah, Madjid; Aubert, Olivier; Prié, YannickHypervideo offers enhanced video-centric experiences. Usually defined from a hypermedia perspective, the lack of a dedicated specification hampers hypervideo domain and concepts from being broadly investigated. This article proposes a specialized hypervideo model that addresses hypervideo specificities. Following the principles of component-based modeling and annotation-driven content abstracting, the Component-based Hypervideo Model (CHM) that we propose is a high level representation of hypervideos that intends to provide a general and dedicated hypervideo data model. Considered as a video-centric interactive document, the CHM hypervideo presentation and interaction features are expressed through a high level operational specification. Our annotation-driven approach promotes a clear separation of data from video content and document visualizations. The model serves as a basis for a Web-oriented implementation that provides a declarative syntax and accompanying tools for hypervideo document design in a Web standards-compliant manner.Item Hypervideo and Annotations on the Web(IEEE Computer Society Washington, DC, USA, 2011-09-08) Sadallah, Madjid; Aubert, Olivier; Prié, YannickEffective video-based Web information system deployment is still challenging, while the recent widespread of multimedia further raises the demand for new online audiovisual document edition and presentation alternatives. Hyper video, a specialization of hypermedia focusing on video, can be used on the Web to provide a basis for video-centric documents and to allow more elaborated practices of online video. In this paper, we propose an annotation-driven model to conceptualize hyper videos, promoting a clear separation between video content/metadata and their various potential presentations. Using the proposed model, features of hyper video are grafted to wider video-based Web documents in a Web standards-compliant manner. The annotation-driven hyper video model and its implementation offer a general framework to experiment with new interaction modalities for video-based knowledge communication on the Web.