Literaturnachweis - Detailanzeige
| Autor/inn/en | Silvester, June P.; und weitere |
|---|---|
| Institution | Planning Research Corp., McLean, VA. |
| Titel | An Operational System for Subject Switching between Controlled Vocabularies: A Computational Linguistics Approach. [Report No.: NASA-CR-3838 |
| Quelle | (1984), (105 Seiten)
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| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Monographie |
| Schlagwörter | Nachschlagewerk; Computational Linguistics; Information Science; Information Systems; Language Processing; Linguistic Theory; Program Descriptions; Programing Languages; Scientific and Technical Information; Structural Analysis (Linguistics); Subject Index Terms; Vocabulary Development |
| Abstract | This report describes a new automated process that pioneers full-scale operational use of subject switching by the NASA (National Aeronautics and Space Administration) Scientific and Technical Information (STI) Facility. The subject switching process routinely translates machine-readable subject terms from one controlled vocabulary into the equivalent terms of another controlled vocabulary using a system called the NASA Lexical Dictionary (NLD). This report also describes the NLD, discusses how to build a lexical dictionary system, details the resources needed, and explains how to maintain the system after it is built. A description of the NASA STI Facility's experiences with their first input vocabulary, that of the Defense Technical Information Center (DTIC), is included. Following a preface and executive summary, this report is divided into seven sections: (1) introduction (purpose, significance, definition of the NASA Lexical Dictionary, scope of NLD, preliminary results, presentation, and project personnel); (2) system description; (3) history; (4) procedures for building a lexical dictionary; (5) data file maintenance; (6) results and conclusions; and (7) summary. A glossary, two appendices, and references are included. (THC) |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2004/1/01 |
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