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Headings from Roget's International Thesaurus
The Roget's Thesaurus was first published in 1852. The 1911 thesaurus was organized in a quasi-hierarchical fashion, with six top categories (Abstract Relations; Space; Matter; Intellect; Volition; and Affections) branching in a shallow tree to about 1050 headwords, all nouns. In many cases the underlying concept of a headword might more appropriately have been categorized as a verb or adjective, but the classification proceeded from the nominalized forms.
The sixth eddition was published in 2002.
The Websters New World Roget's A-Z Thesaurus, 1997, has 6 categories:
MICRA, Inc. Used the fourth edition of Roget's International Thesaurus as a basis in construction of a lexicon for natural language understanding, we are preparing a hierarchical semantic network using the Roget's thesaurus as a starting database. This work was undertaken because examination of the Roget shows that there are semantic relations considered important for linguistic expression which are not defined in other publicly available semantic networks, such as WordNet.
See: An Investigation of the Semantic Relations in the Roget's Thesaurus: Preliminary Results
MICRA, Inc. is a small corporation in New Jersey primarily concerned with building lexical databases for use in Natural Language Understanding.
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