Le modèle DOAN (DOcument ANnotation Model) Modélisation de l'information complexe appliquée à la plateforme Arisem Kaliwatch Server

Abstract : This thesis introduces the DOAN model (DOcument ANnotation Model), which aims at answering the modelling needs of the company Arisem. Arisem is a software vendor acting on the knowledge management market. It offers a platform that processes data during the collection, analysis and dissemination steps of the information flow. As it works on heterogeneous data coming from various sources (e.g., internet, intranet, databases), it performs several analyses (e.g., automatic classification, extraction of emergent concepts), in order to provide synthetic information to the user. From this problematic, we have identified three main needs for the model: expressivity, flexibility and performance. Within the context of this thesis, we have developed amodel based on the facet aggregation paradigm. It enables designers to describe complex, heterogeneous and evolving data. Beyond the simple notion of document, it permits the representation of business objects, such as annotations or classification trees. Supplemented by a rich type system and the ability to express constraints between facets, this model enables us to answer the needs of expressiveness and flexibility. On the other hand, we propose an algorithm able to translate DOAN elements into a relational implementation. Once the model is instantiated, update accesses are controlled by using stored procedures in order to ensure data consistency. Read accesses are in return performed directly by using SQL queries. Designers are thus able to use complex queries without sacrificing performance, exploiting database management systems functionalities. This approach scales well and answers the needs of performance.
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Nicolas Dessaigne. Le modèle DOAN (DOcument ANnotation Model) Modélisation de l'information complexe appliquée à la plateforme Arisem Kaliwatch Server. Interface homme-machine [cs.HC]. Université de Nantes, 2005. Français. ⟨tel-00465962⟩

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