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Content

Bei der Buchausgabe mit CD findet sich auf dieser eine elektronische Version des ASIS&T-Thesaurus, zusammen mit der Software C der Firma Data Harmony. Mit dieser unter Windows laufenden Software wurde der Thesaurus für die dritte Auflage erstellt.

Footnote

Rez. in: KO 32(2005) no.4, S.159-160 (G.J.A. Riesthuis): "This thesaurus is a revised edition of: ASIS thesaurus of information science and librarianship, edited by Jessica L. Milstead, 2nd ed. (1998). The change in the title is result of the change of the name of the ASIS (American Society of Information Science) into American Society for Information Science and Technology. Since 2002 the 2nd edition was used by Information Science Abstracts (now Information Science & Technology Abstracts). In the 2nd edition the goal of the thesaurus was formulated as "[include concepts from] information science and librarianship to a depth that will adequately support indexing in those fields with [...] related fields [...] computer science, linguistics and cognitive sciences [...]" (p. vii). The present editors started to update the thesaurus to reflect "the current state of the field and to implement it for indexing the Society's publications for the ASIS&T Digital Library" (p. v). The draft 3rd edition is used to index a great part of the Society's four publications. This means that the 3`1 edition is, more than its predecessors, based on literary warrant as far as this warrant is reflected in ASIS&T publications. The Netherlands have a descriptor, but Romania or Portugal not. The Bliss Bibliographic Classification is mentioned, but the far more often used Russian Library Bibliographical Classification (BBK) is missing. The thesaurus is presented in three parts: 1. An alphabetical listing of all terms. Here one finds the preferred and non-preferred terms with their relations denoted in the customary form (SN, BT, NT, RT, USE and UF). The ordering is word-byword. 2. An hierarchical display of the terms. This display contains the preferred terms only. 3. A permuted display of all terms. Unlike the 2nd edition, this list contains the non-preferred terms too. The thesaurus is like its predecessors a faceted one. There are seven main facets: 1. People and organizations, 2. Actions, events, and processes, 3. Physical objects, 4. Theoretical concepts and influences on information, 5. Information, information delivery formats and channels, 6. Methods of study, 7. Geographic information. The first five facets are subdivided in subfacets, the last have just one subfacet each. In total there arc 18 subfacets, referred to as "top terms" in the language of the thesaurus. This structure is not very different from the structure of the second edition, although the number of subfacets and the terminology has changed. There is one new facet "geographic information" with one subfacet: "countries and regions". In this facet one can see very clearly see that the thesaurus is based on literary warrant: only relatively few countries arc mentioned. The facet "methods of study" is expanded strongly. Under each of the top terms additional concepts are presented in a hierarchical structure. The maximum depth of the hierarchy is nine, although most subfacets have no more than four or five levels. The record for the "bibliometrics" entry shows clearly the changes. The domain and the main structure have not changed, but narrower terms not previously mentioned are added."
Weitere Rez. in: Information - Wissenschaft und Praxis 58(2007) H.1, S.59-60 (J. Fassbender) mit Berücksichtigung der Software Thesaurus Master.

Object

ASIST-Thesaurus

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Content

Inhalt: Introduction Document File Preparation - Manual Indexing - Information Extraction - Vector Space Modeling - Matrix Decompositions - Query Representations - Ranking and Relevance Feedback - Searching by Link Structure - User Interface - Book Format Document File Preparation Document Purification and Analysis - Text Formatting - Validation - Manual Indexing - Automatic Indexing - Item Normalization - Inverted File Structures - Document File - Dictionary List - Inversion List - Other File Structures Vector Space Models Construction - Term-by-Document Matrices - Simple Query Matching - Design Issues - Term Weighting - Sparse Matrix Storage - Low-Rank Approximations Matrix Decompositions QR Factorization - Singular Value Decomposition - Low-Rank Approximations - Query Matching - Software - Semidiscrete Decomposition - Updating Techniques Query Management Query Binding - Types of Queries - Boolean Queries - Natural Language Queries - Thesaurus Queries - Fuzzy Queries - Term Searches - Probabilistic Queries Ranking and Relevance Feedback Performance Evaluation - Precision - Recall - Average Precision - Genetic Algorithms - Relevance Feedback Searching by Link Structure HITS Method - HITS Implementation - HITS Summary - PageRank Method - PageRank Adjustments - PageRank Implementation - PageRank Summary User Interface Considerations General Guidelines - Search Engine Interfaces - Form Fill-in - Display Considerations - Progress Indication - No Penalties for Error - Results - Test and Retest - Final Considerations Further Reading

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Date

11. 5.2008 19:49:22