Browsing by Author "Tonkin, Nourredine"

Now showing 1 - 16 of 16
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    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, Zaia
    In 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.
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    A spatial model for editing multimedia documents
    (CERIST, 2010-09) Tonkin, Nourredine; Maredj, Azze-Eddine; Sadallah, Madjid
    In 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 factors that affect performances 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.
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    A spatial model for editing multimedia documents
    (2010-10-18) Maredj, Azze-Eddine; Tonkin, Nourredine; Sadallah, Madjid
    Dans 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.
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    Adaptation sémantique d’un document multimédia : Une approche à base de contraintes
    (Université des Sciences et de la Technologie Houari-Boumediene (USTHB), 2012-06-24) Tonkin, Nourredine; Maredj, Azze-Eddine
    Les documents multimédia occupent actuellement une part considérable sur le web. Cependant, ils sont le plus souvent réalisés sous des plates-formes différentes de celles destinées à leur présentation (téléphones portables, PDA, ordinateurs de bureau, ordinateurs portables, etc.) et possédant des capacités variés. Par conséquent, l'adaptation de ces documents devient une nécessité. Elle consiste à essayer de satisfaire ces contraintes par des transformations sur le document initial. L'enjeu est de proposer des solutions afin de pouvoir exécuter et diffuser un document de qualité dans une présentation cohérente et qui restitue le plus fidèlement possible le message contenu dans le document initial. Dans les solutions existantes pour l’adaptation de la composition des documents (dimensions temporelle, spatiale et hypermédia), aucune indication n’est donnée sur la manière de traiter le profil; ni comment retrouver les relations qui violent ce profil. De plus, ces solutions sont souvent confrontées au problème de l’explosion combinatoire lors de la recherche d’une solution. Dans ce travail, nous proposons une approche pour l’adaptation de la composition de document multimédia modélisées par un CSP sur-contraint. Son avantage est qu’elle fait abstraction des modèles de description de ces documents et qu’elle détecte automatiquement les informations d’ordonnancement et de synchronisation, de placement ainsi que les informations intrinsèques des médias. Ces informations sont alors représentées sous forme de relations temporelles, spatiales et hypermédia. L’ensemble de ces relations est alors traduit en contraintes d’équations et inéquations linéaires. De la même façon, les informations du profil sont traduites en un ensemble de contraintes qui peuvent être soit conjonctives soit disjonctives. Elles sont ajoutées aux contraintes du document. En fonction de notre contexte, nous avons défini trois niveaux d’hiérarchie (requises, fortes et faibles) auxquels sont affectées les contraintes. Le système de contraintes est ensuite résolu par un résolveur de contraintes.
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    CSP-based adaptation of multimedia document composition
    (Mohan S. Kankanhalli, Tao Li, Wei Wang, 2015-02) Maredj, Azze-Eddine; Tonkin, Nourredine
    We propose an approach for the dynamic adaptation of multimedia documents modeled by an over-constrained constraint satisfaction problem (OCSP). In addition the solutions that it provides for the problem of determining the relations that do not comply with the user profile and the problem of the combinatorial explosion when searching for alternative relations, it insures a certain quality of service to the presentation of the adapted document: (i) If the required constraints are not satisfied, no document is generated, unlike other approaches that generates even if the presentation of the adapted document is completely different from the initial one, (ii) The definition of the constraints hierarchy (strong constraints and medium constraints) maintains as much as possible of the initial document relations in the adapted one. As result, the adapted presentations are consistent and close to those of the initial ones.
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    CSP-based Adaptation of Multimedia Documents Presentation
    (CERIST, 2014-11) Maredj, Azze-Eddine; Tonkin, Nourredine
    We propose an approach for the dynamic adaptation of multimedia documents modelled by an over-constrained constraint satisfaction problem (OCSP). In addition the solutions that it provides for the problem of determining the relations that do not comply with the user profile and the problem of the combinatorial explosion when searching for alternative relations, this approach insures a certain quality of service to the presentation of the adapted document: (i) If the required constraints are not satisfied, no document is generated, unlike other approaches that generates even if the presentation of the adapted document is completely different from the initial one, (ii) The definition of the constraints hierarchy (strong constraints and medium constraints) for the document relations maintains as much as possible of the initial document relations in the adapted one. As result, the presentations of the adapted documents are consistent and close to those of the initial documents.
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    Extending the Conceptual Neighborhood Graph of the Relations for the Semantic Adaptation of Multimedia Documents
    (WASET, 2012-06) Maredj, Azze-Eddine; Tonkin, Nourredine
    The recent developments in computing and communication technology permit to users to access multimedia documents with variety of devices (PCs, PDAs, mobile phones…) having heterogeneous capabilities. This diversification of supports has trained the need to adapt multimedia documents according to their execution contexts. A semantic framework for multimedia document adaptation based on the conceptual neighborhood graphs was proposed. In this framework, adapting consists on finding another specification that satisfies the target constraints and which is as close as possible from the initial document. In this paper, we propose a new way of building the conceptual neighborhood graphs to best preserve the proximity between the adapted and the original documents and to deal with more elaborated relations models by integrating the relations relaxation graphs that permit to handle the delays and the distances defined within the relations
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    Extending the Conceptual Neighborhood Graph of the Relations for the Semantic Adaptation of Multimedia Documents
    (CERIST, 2011-05) Maredj, Azze-Eddine; Tonkin, Nourredine
    The recent developments in computing and communication technology permit to users to access multimedia documents with variety of devices (PCs, PDAs, mobile phones…) having heterogeneous capabilities. This diversification of supports has trained the need to adapt multimedia documents according to their execution contexts. A semantic framework for multimedia document adaptation based on the conceptual neighborhood graphs was proposed. In this framework, adapting consists on finding another specification that satisfies the target constraints and which is as close as possible from the initial document. In this paper, we propose a new way of building the conceptual neighborhood graphs to best preserve the proximity between the adapted and the original documents and to deal with more elaborated relations models by integrating the relations relaxation graphs that permit to handle the delays and the distances defined within the relations.
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    MediaStudio : Un système d’édition et de présentation de documents multimédia interactifs
    (CERIST, 2010) Maredj, Azze-Eddine; Sadallah, Madjid; Tonkin, Nourredine
    In the actual standards and multimedia systems, the documents are often written in an event based approach which makes the programming techniques not adapted to the incremental edition process. The documents maintenance has become very hard and very expensive and the construction of such documents is not adapted to the non-computer scientist users. Moreover, works done in this field have mainly focused on the temporal dimension while the development of such systems should consider all the multimedia document dimensions (temporal, spatial, structural and hypermedia) to mutualize their conception and implementation. Furthermore, the documents adaptation to particular users reading profiles is not considered whereas for some application fields, like learning, this remains an important need. On the basis of those observations, MediaStudio will try to be a contribution to the field of editing and presenting interactive multimedia documents through a set of propositions to compensate the mentioned insufficiencies.
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    Un modèle logique de documents pour les interactions multimédia
    (JTEA, 2008-05-02) Maredj, Azze-Eddine; Alimazighi, Zaia; Tonkin, Nourredine; Sadallah, Madjid
    La 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.
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    Semantic Adaptation of Multimedia Documents
    (Zarqa University, 2013-11) Maredj, Azze-Eddine; Tonkin, Nourredine
    A multimedia document should be presented on different platforms, for this adaptation of its content is necessary. In this contribution, we make some proposals to improve and extend the semantic approach based on conceptual neighborhoods graphs in order to best preserve the proximity between the adapted and the original documents and to deal with models that define delays and distances.
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    Semantic Approach for the Spatial Adaptation of Multimedia Documents
    (Academy Publisher, 2012-05) Maredj, Azze-Eddine; Tonkin, Nourredine
    With the proliferation of heterogeneous devices (desktop computers, personal digital assistants, phones), multimedia documents must be played under various constraints (small screens, low bandwidth, etc). Taking these constraints into account with current document models is impossible. Hence, generic source documents must be adapted or transformed into documents compatibles with the target contexts. The adaptation consists of modifying this specification of the document in a minimal way to lead it to satisfy the target profile. The profile defines constraints that must be satisfied by the document to be played. At this level, the transgressive adaptation becomes necessary when no specification model exists to satisfy this profile. We focus on the spatial dimension of a multimedia document and we provide an approach for the spatial adaptation that permits to best preserve the initial document semantic. In the proposed transgressive adaptation, the relations that do not comply with the target profile are not most often replaced by the closest ones due to the fact that their immediate neighboring relations have the same similarity degree whereas there may exist differences between them. In this paper, we extend this approach to, firstly, best preserve the proximity between the adapted and the original documents by weighting the arcs of the conceptual neighborhood graphs and secondly, to deal with complex relations models by integrating the concept of the relations relaxation graphs that permit to handle the distances defined within the relations.
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    Spatial adaptation of multimedia documents
    (CERIST, 2011-03) Maredj, Azze-Eddine; Tonkin, Nourredine
    With the proliferation of heterogeneous devices (desktop computers, personal digital assistants, phones), multimedia documents must be played under various constraints (small screens, low bandwidth). Taking these constraints into account with current document models is impossible. Hence, generic source documents must be adapted or transformed into documents compatible with the target contexts. The adaptation consists in modifying the specification of the document in a minimal way to lead it to satisfy the target profile. The profile defines constraints that must be satisfied by the document to be played. At this level, the transgressive adaptation becomes necessary when no specification model exists to satisfy this profile. We focus on the spatial dimension of a multimedia document and we provide an approach to the spatial adaptation of multimedia documents that permit to best preserve the initial document semantic by weighting the conceptual neighborhood graph and the integration of the distances relaxation.
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    Spatial adaptation of multimedia documents
    (2011-05) Maredj, Azze-Eddine; Tonkin, Nourredine
    With the proliferation of heterogeneous devices (desktop computers, personal digital assistants, phones), multimedia documents must be played under various constraints (small screens, low bandwidth). Taking these constraints into account with current document models is impossible. Hence, generic source documents must be adapted or transformed into documents compatible with the target contexts. The adaptation consists in modifying this specification of the document in a minimal way to lead it to satisfy the target profile. The profile defines constraints that must be satisfied by the document to be played. At this level, the transgressive adaptation becomes necessary when no specification model exists to satisfy this profile. We focus on the spatial dimension of a multimedia document and we provide an approach to the spatial adaptation of multimedia documents that permit to best preserve the initial document semantic by weighting the conceptual neighborhood graph and the integration of the distances relaxation
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    Weighting of conceptual neighborhood graph for multimedia documents temporal adaptation
    (CERIST, 2010-09) Maredj, Azze-Eddine; Tonkin, Nourredine
    In the approaches of the semantic adaptation of a multimedia document, where this last is represented by an abstract structure of a relations graph that expresses all the relations that exist between its contained media objects, the adaptation consists in modifying this abstract structure in a minimal way to lead it to satisfy the target profile. The profile defines constraints that must be satisfied by the document to be played. At this level, the transgressive adaptation becomes necessary when no specification model exists to satisfy this profile. In this paper, we propose a conceptual neighborhood graph based approach where the weighting of this graph is also proposed for from one side, reduce substantially the adaptation time and from the other side, find the closest substitution relations to those to be replaced.
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    Weighting of the Conceptual Neighborhood Graph for Multimedia Document Temporal Adaptation
    (2010-12) Maredj, Azze-Eddine; Tonkin, Nourredine
    In the approaches of the semantic adaptation of a multimedia document, where this last is represented by an abstract structure of a relations graph that expresses all the relations that exist between its contained media objects, the adaptation consists in modifying this abstract structure in a minimal way to lead it to satisfy the target profile. The profile defines constraints that must be satisfied by the document to be played. At this level, the transgressive adaptation becomes necessary when no specification model exists to satisfy this profile. In this paper, we propose a conceptual neighborhood graph based approach where the weighting of this graph is also proposed for from one side, reduce substantially the adaptation time and from the other side, find the closest substitution relations to those to be replaced.