On Conceptual Indexing for Data Summarization

A summary is a comprehensive description that grasps the essence of a subject. A text, a collection of text doc- uments, a query answer can be summarized by simple means such as an automatically generated list of the most frequent words or "advanced" by a meaningful textual description of the subject. In between these two extremes are summaries by means of selected concepts exploiting background knowledge providing selected key concepts. We address in this paper an approach where conceptual summaries are provided through a conceptualization as given by an ontology. The idea is to re- strict a background ontology to the set of concepts that appears in the text to be summarized and thereby provide a structure, a so-called instantiated ontology, that is specific to the domain of the text and can be used to condense to a summary not only quantitatively but also conceptually covers the subject of the text.

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