THE EXPRESSION OF CONCEPTUAL SYNTAGMATIC RELATIONSHIPS: A COMPARATIVE SURVEY

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Abstract
The expression of conceptual syntagmatic relationships in document retrieval systems holds out hope for both increased discrimination (generally) and increased recall (in certain contexts). The inclusion of such relationships in retrieval systems requires both a structured inventory of relationships and some means of expressing them; this article examines the latter. To be fully effective, the expression of conceptual syntagmatic relationships must comply with criteria of systematicity, complexity, efficiency and naturalness. Unfortunately, the complex interaction of natural language means of expressing these relationships (lexicalisation, word order, function words and morphosyntactic cases) causes them to fail the systematicity criterion. Most document retrieval system means of expressing conceptual syntagmatic relationships (as exemplified by various term co‐occurrence techniques, links and role indicators) fail to comply with this and other of the criteria. Only gestalt structures simultaneously representing relationships, participants and roles (for example, frames) conform fully to the criterial checklist.

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