-
Malsburg, C. von der: ¬The correlation theory of brain function (1981)
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- Abstract
- A summary of brain theory is given so far as it is contained within the framework of Localization Theory. Difficulties of this "conventional theory" are traced back to a specific deficiency: there is no way to express relations between active cells (as for instance their representing parts of the same object). A new theory is proposed to cure this deficiency. It introduces a new kind of dynamical control, termed synaptic modulation, according to which synapses switch between a conducting and a non- conducting state. The dynamics of this variable is controlled on a fast time scale by correlations in the temporal fine structure of cellular signals. Furthermore, conventional synaptic plasticity is replaced by a refined version. Synaptic modulation and plasticity form the basis for short-term and long-term memory, respectively. Signal correlations, shaped by the variable network, express structure and relationships within objects. In particular, the figure-ground problem may be solved in this way. Synaptic modulation introduces exibility into cerebral networks which is necessary to solve the invariance problem. Since momentarily useless connections are deactivated, interference between di erent memory traces can be reduced, and memory capacity increased, in comparison with conventional associative memory
- Source
- http%3A%2F%2Fcogprints.org%2F1380%2F1%2FvdM_correlation.pdf&usg=AOvVaw0g7DvZbQPb2U7dYb49b9v_
-
Neubauer, K.W.: Neuere Tendenzen bei der Entwicklung von Verbundsystemen für Bibliotheken (1984)
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- Source
- ABI-Technik. 4(1984), S.247-254
-
Kashyap, M.M.: Algorithms for analysis and representation of subject contents in a documentary language (1983)
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- Source
- Library herald. 22(1983), S.1-29
-
Pflug, G.: Classification in the libraries of the German Federal Republic (1982)
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- Source
- International classification. 9(1982), S.27-29
- Theme
- Geschichte der Klassifikationssysteme
-
Weber, A.; Nöthiger, R.: ETHICS: ETH Library Information Control System : an online public access catalogue at the ETH-Bibliothek, Zürich, Switzerland (1988)
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- Source
- ABI-Technik. 8(1988), S.385-388
-
Williams, R.M.: ISI search network research front specialities (1983)
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- Source
- Deutscher Dokumentartag 1982, Lübeck-Travemünde, 29.-30.9.1982: Fachinformation im Zeitalter der Informationsindustrie. Bearb.: H. Strohl-Goebel
-
Dailey, J.E.: Subject headings (1980)
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- Abstract
- Enthält Geschichte der Library of Congress Subject Headings und Sears' list
- Source
- Encyclopedia of library and information science. Vol.29
-
Rival, I.: Order - a theory with a view (1989)
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- Abstract
- Ordnung hat in unserer Alltagssprache eine Fülle von Bedeutungen. Als mathematischer Begriff ist Ordnung mit einer begrenzten Bedeutung festgelegt, die als eine Abstraktion der Beziehungen 'ist enthalten in', 'ist ein Teil von' und 'ist kleiner als' verstanden werden kann. Der mathematische Ordnungsbegriff tritt in vielen Bereichen der Mathematik und ihrer Anwendungen auf. Seine aktuelle Verwendbarkeit, wie etwa im Bereich der theoretischen Informatik, machen die mathematische Ordnungstheorie zu einem attraktiven Teilgebiet der gegenwärtigen Mathematik
- Source
- Klassifikation und Ordnung. Tagungsband 12. Jahrestagung der Gesellschaft für Klassifikation, Darmstadt 17.-19.3.1988. Hrsg.: R. Wille
-
Devadason, F.J.: Postulate-Based Permuted Subject Indexing Language as a metalanguage for computer-aided generation of information retrieval thesaurus (1983)
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- Abstract
- The development of the general theory of subject indexing language and of POPSI for organisation, storage and retrieval of subjects embodies in documents has a striking parallel in the search for and development of 'universal forms' and 'deep structure' in language and linguistic studies. This paper briefly traces the development of POPSI language as a metalanguage for information organisation and for generating information retrieval thesaurus. Also a computer-based system for generating an information retrieval thesaurus from modulated subject headings formulated according to POPSI which are enriched with certain codes for relating the terms in the subject headings is described. It is also mentioned that, if it is possible to form a table of equivalent terms in another language for the terms already used to generate the thesaurus, then it is possible to translate the thesaurus automatically into the other language
- Source
- International forum on information and documentation. 8(1983), S.22-29
-
Shatford, S.: Analyzing the subject of a picture : a theoretical approach (1986)
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- Abstract
- This paper suggests a theoretical basis for identifying and classifying the kinds of subjects a picture may have, using previously developed principles of cataloging and classification, and concepts taken from the philosophy of art, from meaning in language, and from visual perception. The purpose of developing this theoretical basis is to provide the reader with a means for evaluating, adapting, and applying presently existing indexing languages, or for devising new languages for pictorial materials; this paper does not attempt to invent or prescribe a particular indexing language.
- Date
- 7. 1.2007 13:00:29
- Footnote
- Mit einer Tabelle zur Inhaltsanalyse (in der Übersetzung von Lebrecht)
-
Goossens, P.; Mazur-Rzesos, E.: Hierarchical relationships in bibliographic descriptions : problem analysis (1982)
0.00
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- Abstract
- Beitrag zur Frage der Bibliographic relationships
- Series
- Veröffentlichungen der Gesamthochschulbibliothek Essen; 2
- Source
- Hierarchical relationships in bibliographic records, INTERMARC software subgroup seminar 4, Essen, 25.3.-27.3.1981
-
Pettee, J.: ¬The subject approach to books and the development of the dictionary catalog (1985)
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- Abstract
- Julia Pettee's contribution to classification theory came about as part of her work an subject headings. Pettee (1872-1967) was for many years librarian of the Union Theological Seminary in New York and was best known for the classification system she developed for the seminary and as the author of the book Subiect Headings. She was one of the first to call attention to the fact that there was a classification system in subject headings. It was, as she put it, "completely concealed when scattered through the alphabetical sequence" (p. 98). On the other hand, she recognized that an index entry was a pointing device and existed to show users specific terms. Index terms, unlike subject headings, could be manipulated, inverted, repeated, and stated in as many words as might be desired. The subject heading, she reiterated, had in it "some idea of classification," but was designed to pull together like material and, unlike the index term, would have limited capability for supplying access by way of synonyms, catchwords, or other associative forms. It is interesting that she also thought of the subject heading in context as forming a three-dimensional system. Logically this is the case whenever one attempts to reach beyond the conventional hierarchy as described an a plane surface, and, in fact, thought out as if the classification were an a plane surface. Pettee described this dimension variously as names "reaching up and over the surface ... hands clasp[ing] in the air" from an individual term (pp. 99-100). Or, in other context, as the mapping of "the many third-dimensional criss-crossing relationships of subject headings." (p. 103) Investigations following Pettee's insight have shown the nature and the degree of the classification latent in subject headings and also in the cross-references of all indexing systems using cross-references of the associative type ("see also" or equivalent terminology). More importantly, study of this type of connection has revealed jumps in logic and meaning caused by homographs or homonyms and resulting in false connections in classification. Standardized rules for making thesauri have prevented some of the more glaring non sequiturs, but much more still needs to be done. The whole area of "related terms", for example, needs to be brought under control, especially in terms of classification mapping.
- Footnote
- Original in: Pettee, J.: The history and theory of the alphabetical subject approach to books. New York: Wilson 1946. S.22-25.
- Theme
- Geschichte der Sacherschließung
Geschichte der Kataloge
-
Roberts, N.: Historical studies in documentation : the pre-history of the information retrieval thesaurus (1984)
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- Theme
- Geschichte der Sacherschließung
-
Piternick, A.B.: What's in a name? : use of names and titles in subject searching (1985)
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- Source
- Database. 8(1985) no.4, S.22-28
-
Settel, B.; Cochrane, P.A.: Augmenting subject descriptions for books in online catalogs (1982)
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- Source
- Database. 5(1982), S.29(?)-(?)
-
Ramsey, H.R.; Grimes, J.D.: Human factors in interactive computer dialog (1983)
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- Source
- Annual review of information science and technology. 18(1983), S.29-60
-
Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986)
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- Source
- Information processing and management. 22(1986) no.6, S.465-476
-
Tell, B.V.: Cataloging rules and database production : implications for manpower training in a developing country (1989)
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- Source
- International forum on information and documentation. 14(1989), S.22-27
-
Boss, R.W.; Harrison, S.B.: ¬The online patron access catalog : the keystone in library automation (1989)
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- Footnote
- Update in: Library technology reports 29(1993) no.5, S.587-745
-
Carlyle, A.: Matching LSCH and user vocabulary in the library catalog (1989)
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- Footnote
- Eine interessante Studie, die auf die Anwendung der RSWK übertragen werden könnte.
- Source
- Subject control in online catalogs. Ed.: R.P. Holley
