Searching for authors named "Nathalie Pernelle" – sorted by Relevance.
4 documents found, showing 1 through 4.
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ZooM: Alpha Galois Lattices for Conceptual Clustering
- …The main drawback of Galois lattices is that their size can be very large when dealing with real-world data sets. One way to reduce the number of nodes is to use a language with a weak expressivity. In this paper, we propose an approach based on the new notion of alpha extension where the number of …
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ZooM: a nested Galois lattices-based system for conceptual clustering
- …This paper deals with the representation of multi-valued data by clustering them in a small number of classes organized in a hierarchy and described at an appropriate level of abstraction. The contribution of this paper is three fold. First we investigate a partial order, namely nesting, relatin…
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Automatic Construction and Refinement of a Class Hierarchy over Semistructured Data
- …this paper, we present an approach based on the use of two languages of description of classes for the automatic clustering of semistructured data. The first language of classes has a high power of abstraction and guides the construction of a lattice of classes covering the whole set of the data. Th…
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Contextual and Metadata-based Approach for the Semantic Annotation of Heterogeneous Documents
- …Abstract. In this paper, we present SHIRI-Annot, an automatic ontologydriven and unsupervised approach for the semantic annotation of documents which contain more or less structured parts. The aim of this approach is to build an integration system called SHIRI 3 which allows the user access to docum…
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