1. Contextual and Conceptual Information Retrieval and Navigation on the Web

    The goal of this chapter is to propose a methodology and tools to enhance information retrieval and navigation on the Web through contextual and conceptual help. This methodology provides users with an extended navigation space by adding a conceptual and a semantic layer above Web data. The conceptual layer is made of Galois lattices which cluster Web pages into concepts according to their common features (in particular their textual content). These lattices represent the Global Conceptual Context of Web pages. An additional navigation layer is provided by ontologies which are connected to the conceptual level through specific concepts of the ...
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      Discourse, Entailment, Machine Translation, NER, Parsing, Segmentation, Semantic, Sentiment, Summarization, WSD
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