This paper describes a method and a system ONTOQUERY for content-based querying of
texts based on the availability of an ontology for the concepts in the text domain. A key
principle in the system is the extraction of conceptual content of noun phrases into
descriptors forming an integral part of the ontology. The retrieval of text passages rests on
matching descriptors from the text against descriptors from the noun phrases in the query.
The match need not be exact but is mediated by the ontology, invoking in particular …

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