Nasa S Online Machine Aided Indexing System
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Nasa S Online Machine Aided Indexing System
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher:
Release Date : 2018-11-03
Nasa S Online Machine Aided Indexing System written by National Aeronautics and Space Adm Nasa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-03 with categories.
This report describes the NASA Lexical Dictionary, a machine aided indexing system used online at the National Aeronautics and Space Administration's Center for Aerospace Information (CASI). This system is comprised of a text processor that is based on the computational, non-syntactic analysis of input text, and an extensive 'knowledge base' that serves to recognize and translate text-extracted concepts. The structure and function of the various NLD system components are described in detail. Methods used for the development of the knowledge base are discussed. Particular attention is given to a statistically-based text analysis program that provides the knowledge base developer with a list of concept-specific phrases extracted from large textual corpora. Production and quality benefits resulting from the integration of machine aided indexing at CASI are discussed along with a number of secondary applications of NLD-derived systems including on-line spell checking and machine aided lexicography. Silvester, June P. and Genuardi, Michael T. and Klingbiel, Paul H. Unspecified Center...
Nasa S Online Machine Aided Indexing System
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Author : June P. Silvester
language : en
Publisher:
Release Date : 1993
Nasa S Online Machine Aided Indexing System written by June P. Silvester and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Machine Aided Indexing From Natural Language Text
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-08
Machine Aided Indexing From Natural Language Text written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-08 with categories.
The NASA Lexical Dictionary (NLD) Machine Aided Indexing (MAI) system was designed to (1) reuse the indexing of the Defense Technical Information Center (DTIC); (2) reuse the indexing of the Department of Energy (DOE); and (3) reduce the time required for original indexing. This was done by automatically generating appropriate NASA thesaurus terms from either the other agency's index terms, or, for original indexing, from document titles and abstracts. The NASA STI Program staff devised two different ways to generate thesaurus terms from text. The first group of programs identified noun phrases by a parsing method that allowed for conjunctions and certain prepositions, on the assumption that indexable concepts are found in such phrases. Results were not always satisfactory, and it was noted that indexable concepts often occurred outside of noun phrases. The first method also proved to be too slow for the ultimate goal of interactive (online) MAI. The second group of programs used the knowledge base (KB), word proximity, and frequency of word and phrase occurrence to identify indexable concepts. Both methods are described and illustrated. Online MAI has been achieved, as well as several spinoff benefits, which are also described. Silvester, June P. and Genuardi, Michael T. and Klingbiel, Paul H. Unspecified Center...
Strategic Information Systems Concepts Methodologies Tools And Applications
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Author : Hunter, M. Gordon
language : en
Publisher: IGI Global
Release Date : 2009-08-31
Strategic Information Systems Concepts Methodologies Tools And Applications written by Hunter, M. Gordon and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-08-31 with Education categories.
"This 4-volume set provides a compendium of comprehensive advanced research articles written by an international collaboration of experts involved with the strategic use of information systems"--Provided by publisher.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1965
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Aeronautics categories.
Encyclopedia Of Library And Information Science
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Author : Allen Kent
language : en
Publisher: CRC Press
Release Date : 1997-09-16
Encyclopedia Of Library And Information Science written by Allen Kent and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-09-16 with Language Arts & Disciplines categories.
The Biological Literature to An Uncertainty Principle for Information Seeking: A Qualitative Approach
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1994
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Government publications categories.
Monthly Catalogue United States Public Documents
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Author :
language : en
Publisher:
Release Date : 1994
Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Government publications categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1994-03
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-03 with Aeronautics categories.
Thesaurus Construction And Use
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Author : Jean Aitchison
language : en
Publisher: Routledge
Release Date : 2003-09-02
Thesaurus Construction And Use written by Jean Aitchison and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-09-02 with Language Arts & Disciplines categories.
A practical guide to the construction of thesauri for use in information retrieval, written by leading experts in the field. Includes: planning and design; vocabulary control; specificity and compound terms; structure and relationships; auxiliary retrieval devices; multilingual thesauri; AAT Compound Term Rules. The US ANSI/NISO Z39.19 Thesaurus construction standard is also covered.