Browsing by Subject "Annotation"

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    CHM: an annotation-and component-based hypervideo model for the Web
    (Springer Verlag, 2012-07-21) Sadallah, Madjid; Aubert, Olivier; Prié, Yannick
    Hypervideos are hypermedia documents that focus on video content. While they have long been deployed using specialized software or even hardware, the Web now offers a ground for them to fit into standardized languages and implementations. However, hypervideo design also currently uses very specific models limited to a single class of documents, or very generic hypermedia models that may not appropriately express their specific features. In this article we describe such features, and we introduce CHM, an annotation-driven and component-based model to conceptualize hypervideos through a high level operational specification. An extensible set of high level components is defined to emphasize the presentation and interaction features modeling, while lower level components offer more flexibility and customization opportunities. Being annotation-based, the model promotes a clear separation between video content/metadata and their various potential presentations. We also describe WebCHM, an implementation of CHM with standard Web technologies that provides a general framework to experiment with hypervideos on the Web. Two examples are provided as well as a preliminary usage study of the model and its implementation to validate our claims and proposals.
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    Component-based hypervideo model: high-level operational specification of hypervideos
    (ACM New York, NY, USA, 2011) Sadallah, Madjid; Aubert, Olivier; Prié, Yannick
    Hypervideo 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.
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    Component-based Hypervideo Model: high-level operational specification of hypervideos
    (CERIST, 2011-06) Sadallah, Madjid; Aubert, Olivier; Prié, Yannick
    Hypervideo offers enhanced video-centric experiences with attractive and powerful features. Usually defined from a hypermedia perspective, the lack for a dedicated specification prevents hypervideo domain and concepts from being broadly investigated. This article proposes a formal hyper¬video model beyond conventional and very general ones. Followingtheprinciples of component-based modeling and annotation-driven content abstracting, CHM – the proposed Component-based Hypervideo Model - is a high level rep-resentation of hypervideos that intends to expose a gen¬eral, easy to use, comprehensive, expressive, intuitive and dedicated hypervideo data model. Considered as a video-¬centric interactive document, the CHM hypervideo presen¬tation and interaction features are emphasized throughhigh level document 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 documents design in a simple yet powerful and Web standards¬ compliant manner.
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    Hypervideo and Annotations on the Web
    (IEEE Computer Society Washington, DC, USA, 2011-09-08) Sadallah, Madjid; Aubert, Olivier; Prié, Yannick
    Effective 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.
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    Tagging collaboratif et filtrage de tags à base du profil utilisateur
    (Université Abderrahmane Mira de Bejaia, 2009) Kichou, Saida; Amghar, Youssef
    Le ‘Tagging collaboratif’ ne cesse de gagner une popularité sur le web 2.0, cette nouvelle génération du web qui fait de l’utilisateur un lecteur-rédacteur. Le ‘Tagging’ est un des moyens permettant à l’utilisateur de s’exprimer librement via des ajouts d’étiquettes appelées ‘Tags’ à des ressources partagées. L’un des problèmes rencontrés dans les systèmes du Tagging actuels est la définition des tags les plus appropriés pour une ressource. Les tags sont généralement classés par ordre de popularité tel que del-icio-us. Or la popularité du tag ne reflète pas toujours son importance et sa représentativité vis-à-vis de la ressource à laquelle il est associé. Partant des hypothèses qu’un même tag pour une ressource peut prendre des significations différentes selon les utilisateurs, et un tag issu d’un utilisateur connaisseur serait plus important qu’un tag issu d’un utilisateur novice, nous proposons une approche de pondération des tags d’une ressource à base du profil utilisateur. Pour ceci nous définissons un modèle utilisateur permettant son intégration dans le calcul du poids d’un tag ainsi qu’une formule de calcul de ce dernier à base de trois facteurs concernant l’utilisateur à savoir, le degré de rapprochement entre ses centres d’intérêts et le domaine de la ressource, son expertise et son estimation personnelle vis-à-vis des tags qu’il associe à la ressource. Un descripteur de ressource contenant les meilleurs tags est ainsi créé