This paper describes a technique for integrating several (many) virtual hyperbooks in a digital library. We consider a virtual hyperbook model that comprises a domain ontology. By interconnecting the hyperbook's ontologies, we can create a multi-point of view ontology that describes a set of hyperbooks. A hypertext interface specification language can use this ontology to construct new semantically and narratively coherent hyperdocuments based on the content of several hyperbooks.
Dans le cadre d'une approche pédagogique basée sur l'écriture collaborative d'hyperlivres, nous avons développé et utilisé divers modèles et systèmes d'hyperlivres fondés sur la notion de document virtuel. L'une des composantes de ces hyperlivres est une ontologie de domaine qui sert à la fois à l'organisation de l'hyperlivre et à l'inférence de liens et de documents d'interface. Dans cet article nous présentons tout d'abord nos modèles d'hyperlivres avec pour chacun d'eux les observations que nous avons pu effectuer lors de leur utilisation. Nous montrons ensuite un certain nombre d'enseignements que nous avons tirés de ces observations à propos de l'utilisation des ontologies de domaine. Ces enseignements se situent d'une part au niveau de l'ingénierie des hyperlivres et d'autre part au niveau de la création d'ontologies. Finalement nous montrons comment utiliser les ontologies pour étendre le concept d'hyperlivre vers la prise en compte de divers points de vue, l'intégration d'hyperlivres dans une bibliothèque, la personnalisation et la génération de documentations. MOTS CLÉS : Hyperlivre, hypertexte, outils de l'écriture, travail collaborative, ontologie, point de vue, intégration d'ontologies ABSTRACT : To support a pedagogical approach based on the collaborative writing of hyperbooks, we have developed several hyperbook models and systems based on the virtual document idea. In these hyperbooks, domain ontologies are used to organize the information contents and to infer interface documents. This article first presents our hyperbook models, together with observations made when using them with student. Then we discuss some of the lessons we have drawn about the use of ontologies in these environments. These lessons concern both the engineering of hyperbooks and the creation of domain ontologies. Finally we show how to use ontologies to extend the hyperbook concept to take into account several points of view, to integrate hyperbooks into a library of hyperbooks, to personalize hyperbooks, and to generate documentation about a topic.
We describe the automatic transformation of a traditional electronic document into a augmented, virtual document. After converting the content into a "small-scale" hyperbook structure with an ontology and textual fragments, we calculate semantic similarity relations between the concepts of this hyperbook and a reference hyperbook. We finally rebuild the document by involving the retrieved hyperlinks. The aim is to show that the integration process also works without a highly detailed ontological structure of the source document.
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