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Popper, K.R.: Three worlds : the Tanner lecture on human values. Deliverd at the University of Michigan, April 7, 1978 (1978)
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- Source
- https%3A%2F%2Ftannerlectures.utah.edu%2F_documents%2Fa-to-z%2Fp%2Fpopper80.pdf&usg=AOvVaw3f4QRTEH-OEBmoYr2J_c7H
-
Axelos, C.; Flasch, K.; Schepers, H.; Kuhlen, R.; Romberg, R.; Zimmermann, R.: Allgemeines/Besonderes (1971-2007)
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- Footnote
- DOI: 10.24894/HWPh.5033. Vgl. unter: https://www.schwabeonline.ch/schwabe-xaveropp/elibrary/start.xav#__elibrary__%2F%2F*%5B%40attr_id%3D%27verw.allgemeinesbesonderes%27%5D__1515856414979.
-
Historisches Wörterbuch der Philosophie (1971-2007)
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- Footnote
- Online unter: https://hwph.ch/ bzw. https://www.schwabeonline.ch/schwabe-xaveropp/elibrary/start.xav#__elibrary__%2F%2F*%5B%40attr_id%3D%27hwph_productpage%27%5D__1515856966402.
-
Fugmann, R.: ¬The theoretical foundation of the IDC-system : 6 postulates for information retrieval; treatise 1 on information retrieval theory (1972)
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Turski, W.M.: On a model of information retrieval system based on thesaurus (1971)
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- Source
- Information storage and retrieval. 7(1971) no.2, S.89-94
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Dattola, R.T.: FIRST: Flexible information retrieval system for text (1979)
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- Source
- Journal of the American Society for Information Science. 30(1979), S.9-14
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Fugmann, R.: Toward a theory of information supply and indexing : treatise 6 on retrieval system theory (1976)
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Fugmann, R.; Kusemann, G.; Winter, H.J.: ¬The supply of information an chemical reactions in the IDC system (1979)
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- Source
- Information storage and retrieval. 15(1979), S.303-323
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Artandi, S.: Document retrieval and the concept of sets (1971)
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- Source
- Journal of the American Society for Information Science. 22(1971) no.4, S.289-290
-
Waller, W.G.; Kraft, D.H.: ¬A mathematical model of a weighted Boolean retrieval system (1979)
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- Abstract
- The use of weights to denote a query representation and/or the indexing of a document is analysed as a generalization of a Boolean retrieval system. Criteria are given for the functions used to evaluate the relevance of the records to a specific query, including self-consistency. Various mechnaisms suggested in the literature for evaluating the relevance of records with regard to a given query are tested and found to be less than satisfactory. A new approach is suggested to avoid some of the perils of a weighted Boolean retrieval system
- Source
- Information processing and management. 15(1979), S.235-245
-
Fugmann, R.; Nickelsen, H.; Nickelsen, I.; Winter, J.H.: Representation of concept relations using the TOSAR system of IDC : treatise 3 on information retrieval theory (1974)
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- Source
- Journal of the American Society for Information Science. 25(1974), S.287-307
-
Radecki, T.: Fuzzy set theoretical approach to document retrieval (1979)
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- Abstract
- The aim of a document retrieval system is to issue documents which contain the information needed by a given user of an information system. The process of retrieving documents in response to a given query is carried out by means of the search patterns of these documents and the query. It is thus clear that the quality of this process, i.e. the pertinence of the information system response to the information need of a given user depends on the degree of accurary in which document and query contents are represented by their search patterns. It seems obvious that the weighting of descriptors entering document search patterns improves the quality of the the document retrieval process. A mathematical apparatus which takes into consideration, in a natural manner, the fact that the grades of importance of the descriptors in document search patterns are of the contimuum type, that is an apparatus adequate to the description of a retrieval system of documents indexed by weighted descriptors is - among known mathematical methods - the theory of fuzzy sets
- Source
- Information processing and management. 15(1979), S.247-259
-
Bookstein, A.; Cooper, W.: ¬A general mathematical model for information retrieval systems (1976)
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- Abstract
- This paper presents a mathematical model of an information retrieval system thought to be general enough to serve as an abstract representation of most document and reference retrieval systems. The model is made up of four components that, in one form or another, appear in every functioning system. It is proved that the basic organization of documents that the system provides for a user on receipt of a request follows from the properties and interrelations of the four components. Each component is then discussed in turn and it is seen that much of the existing theory regarding information systems can be viewed as an elaboration of this model
-
¬The PRECIS system for computer-generated indexes and its use in the British National Bibliography (1972)
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- Series
- Contributions in librarianship and information science; no.3
- Source
- Subject retrieval in the seventies: new directions. Proc. of an Int. Symp. ... College Park, May 14-15, 1971. Ed.: H.H. Wellisch et al
- Theme
- Preserved Context Index System (PRECIS)
-
Mazur, Z.: Inverted file organization in the information retrieval system based on thesaurus with weights (1979)
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- Abstract
- The inverted file structure is often used to organize data in the information retrieval system. When the hierarchy relation on the set descriptors and weights of descriptors in document description would be taken into account, the conventional concept of the inverted file may be extended. Properties and operations on inverted files, which are used in systems based on thesaurus with weights, are studied in this paper
- Source
- Information processing and management. 15(1979), S.227-234
-
Subject retrieval in the seventies: new directions : Proc. of an Int. Symp. ... College Park, 14.-15.5.1971 (1972)
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- Content
- Enthält die Beiträge: WELLISCH, H.H.: Subject retrieval in the seventies: methods, problems, prospects; GROLIER, E. de: Recent research trends in the field of information retrieval languages; SOERGEL, D.: A general model for indexing languages: the basis for compatibility and integration; WILSON, T.D.: The work of the British Classification Research Group; AITCHISON, J.: Thesaurofacet: a new concept in subject retrieval schemes; AUSTIN, D.: The PRECIS system for computer-generated indexes and its use in the British National Bibliography; LLOYD, G.A.: The Universal Decimal Classification as an international switching language; RIGBY, M.: The UDC in mechanized subject information retrieval; ANGELL, R.S.: Library of Congress Subject Headings: review and forecast
- Series
- Contributions in librarianship and information science; no.3
-
Kemp, D.A.: Relevance, pertinence and information system development (1974)
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- Abstract
- The difference between pertinence and relevance is discussed. Other pairs of terms and the differences between their members are examined, and the suggestion is made that such studies could increase our understanding of the theory of information systems, and thence lead to practical improvements.
- Source
- Information storage and retrieval. 10(1974), S.37-47
-
Fugmann, R.; Winter, J.H.: Reverse retrieval : toward analogy inferences by mechanized classification (treatise 7 on retrieval system theory) (1979)
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-
Bookstein, A.; Swanson, D.R.: ¬A decision theoretic foundation for indexing (1975)
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- Abstract
- The indexing of a document is among the most crucial steps in preparing that document for retrieval. The adequacy of the indexing determines the ability of the system to respond to patron requests. This paper discusses this process, and document retrieval in general, on the basis of formal decision theory. The basic theoretical approach taken is illustrated by means of a model of word occurrences in documents in the context of a model information system; both models are fully defined in this paper. Through the main purpose of this papers is to provide insights into a very complex process, formulae are developed that may prove to be of value for an automated operating system. The paper concludes with an interpretation of recall and precision curves as seen from the point of view of decision theory
- Source
- Journal of the American Society for Information Science. 26(1975), S.45-50
-
Cleveland, A.D.; Cleveland, D.B.: ¬A test of Buck's prime number coding scheme (1979)
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- Abstract
- An experiment was carried out to study the effect of coding, as an independent variable, on the information retrieval process. A simple prime number coding scheme was utilized in conjunction with Goffman's indirect method file structuring and searching technique. The results demonstrated that a code, in itself, can affect retrieval. It introduces a noticeable viriable into the process. Generally, coding has been considered a minor element, but clearly much more needs to be learned about how codes interact with the other functions in the retrieval system
- Source
- Journal of the American Society for Information Science. 30(1979), S.291-295
