Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.
© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)
4Borko, H.: Getting started in library expert systems research.
In: Information processing and management. 23(1987), S.81-88.
5Borko, H.: ¬A note commenting on 'vocabulary control and information technology' by Derek Austin.
In: Aslib proceedings. 38(1986), no.6/7 S.
6Borko, H.: Research in computer based classification systems.
In: Theory of subject analysis: a sourcebook. Ed.: L.M. Chan, et al. Littleton, CO : Libraries Unlimited, 1985. S.287-305.
Abstract: The selection in this reader by R. M. Needham and K. Sparck Jones reports an early approach to automatic classification that was taken in England. The following selection reviews various approaches that were being pursued in the United States at about the same time. It then discusses a particular approach initiated in the early 1960s by Harold Borko, at that time Head of the Language Processing and Retrieval Research Staff at the System Development Corporation, Santa Monica, California and, since 1966, a member of the faculty at the Graduate School of Library and Information Science, University of California, Los Angeles. As was described earlier, there are two steps in automatic classification, the first being to identify pairs of terms that are similar by virtue of co-occurring as index terms in the same documents, and the second being to form equivalence classes of intersubstitutable terms. To compute similarities, Borko and his associates used a standard correlation formula; to derive classification categories, where Needham and Sparck Jones used clumping, the Borko team used the statistical technique of factor analysis. The fact that documents can be classified automatically, and in any number of ways, is worthy of passing notice. Worthy of serious attention would be a demonstra tion that a computer-based classification system was effective in the organization and retrieval of documents. One reason for the inclusion of the following selection in the reader is that it addresses the question of evaluation. To evaluate the effectiveness of their automatically derived classification, Borko and his team asked three questions. The first was Is the classification reliable? in other words, could the categories derived from one sample of texts be used to classify other texts? Reliability was assessed by a case-study comparison of the classes derived from three different samples of abstracts. The notso-surprising conclusion reached was that automatically derived classes were reliable only to the extent that the sample from which they were derived was representative of the total document collection. The second evaluation question asked whether the classification was reasonable, in the sense of adequately describing the content of the document collection. The answer was sought by comparing the automatically derived categories with categories in a related classification system that was manually constructed. Here the conclusion was that the automatic method yielded categories that fairly accurately reflected the major area of interest in the sample collection of texts; however, since there were only eleven such categories and they were quite broad, they could not be regarded as suitable for use in a university or any large general library. The third evaluation question asked whether automatic classification was accurate, in the sense of producing results similar to those obtainabie by human cIassifiers. When using human classification as a criterion, automatic classification was found to be 50 percent accurate.
Anmerkung: Nachdruck des Originalartikels mit Kommentierung durch die Herausgeber ; Original in: Classification research: Proceedings of the Second International Study Conference held at Hotel Prins Hamlet, Elsinore, Denmark, 14th-18th Sept. 1964. Ed.: Pauline Atherton. Copenhagen: Munksgaard 1965. S.220-238.
Themenfeld: Automatisches Klassifizieren
7Borko, H.: ¬The role of classification in online retrieval systems and automated libraries.
In: Universal classification I: subject analysis and ordering systems. Proc. of the 4th Int. Study Conf. on Classification research, Augsburg, 28.6.-2.7.1982. Ed.: I. Dahlberg. Frankfurt : Indeks, 1982. S.235-245.
(Studien zur Klassifikation; Bd.11)
Themenfeld: Klassifikationssysteme im Online-Retrieval
8Borko, H. ; Bernier, C.L.: Indexing concept and methods.
New York : Academic Pr., 1978. X, 261 S.
(Library and information science series)
RSWK: Register (SWB)
RVK: AN 95100 Allgemeines / Buch- und Bibliothekswesen, Informationswissenschaft / Informationswissenschaft / Informationspraxis / Referieren, Klassifizieren, Indexieren
9Borko, H.: Toward a theory of indexing.
In: Information processing and management. 13(1977), S.355-365.
10Borko, H. ; Bernier, C.L.: Abstracting concepts and methods.
New York : Academic Pr., 1975. X, 250 S.
(Library and information science)
RVK: ES 930 Allgemeine und vergleichende Sprach- und Literaturwissenschaft. Indogermanistik. Außereuropäische Sprachen und Literaturen / Spezialbereiche der allgemeinen Sprachwissenschaft / Datenverarbeitung und Sprachwissenschaft. Computerlinguistik / Informationsbehandlung
12Borko, H.: Informationswissenschaft : was ist das?.
In: Nachrichten für Dokumentation. 19(1968) H.3, S.59-61.
13Borko, H.: Design of information systems and services.
In: Annual review of information science and technology. 2(1967), S.35-62. New York : Wiley, 1967.
15Borko, H. ; Chatman, S.: Criteria for acceptable abstracts : a survey of abstractors' instructions.
In: American documentation. 14(1963), S.149-160.
Abstract: The need for criteria by which to judge the adequacy of an abstract is felt most strongly when evaluating machine-produced abstracts. In order to develop a set of criteria, a survey was conducted of the instructions prepared by various scientific publications as a guide to their abstracters in the preparation of copy. One-hundred-and-thirty sets of instructions were analyzed and compared as to their function, content, and form. It was concluded that, while differences in subject matter do not necessarily require different kinds of abstracts, there are significant variations between the informative and the indicative abstract. A set of criteria for the writing of an acceptable abstract of science literature was derived. The adequacy of these criteria is still to be validated, and the athors' plans for fututre research in this area are specified
17Borko, H.: Determining user requirements for an information storage and retrieval system : a systems approach.
In: Information systems workshop. Washington, DC, 1962. S.37-46.