-
Cleverdon, C.W.: ASLIB Cranfield Research Project : Report on the first stage of an investigation into the comparative efficiency of indexing systems (1960)
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- Footnote
- Rez. in: College and research libraries 22(1961) no.3, S.228 (G. Jahoda)
-
Mooers, C.: ¬The indexing language of an information retrieval system (1963)
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- Source
- Information retrieval today: papers presented at an Institute conducted by the Library School and the Cetre for Continuation Study, University of Minnesota, Sept. 19-22, 1962. Ed. by. Wesley Simonton
-
Soergel, D.: Mathematical analysis of documentation systems : an attempt to a theory of classification and search request formulation (1967)
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- Abstract
- As an attempt to make a general structural theory of information retrieval, a documentation system (DS) is defined as a formal system consisting of (a) a set o of objects (documents); (b) a set A++ of elementary attributes (key-words), from which further attributes may be constructed: A++ generates A; (c) a set of axioms of the form X++(x)=m (m¯M, M a set of constant connecting attributes with objects: from the axioms further theorems (=true statements) may be constructed. By use of the theorems, different mappings O -> P(o) (P(o) set of all subsets of o) (search question -> set of documents retrieved) are defined. The type of a DS depends on two basic decisions: (1) choice of the rules for the construction of attributes and theorems, e.g., logical product in coordinate indexing; links. (2) choice of M; M may consist of the two constants 'applicable' and 'not applicable', or some positive integers, ...; Further practical decisions: A++ hierarchical or not; kind of mapping; introduction of roles (=further attributes). The most simple case - ordinary two-valued Coordinate Indexing - is discusssed in detail; o is a free distributive (but not Boolean) lattice, the homographic image a ring of subsets of o; instead of negation which is not useful, a useful retrieval operation 'praeternagation' is introduced. Furthermore these are discussed: a generalized definition of superimposed coding, some functions for the distance of objects or attributes; optimization and automatic derivation of classifications. The model takes into account term-term relations and document-document relations. It may serve as a structural framework in terms of which the functional problems of retrieval theory may be expressed more clearly
-
Blagden, J.F.: How much noise in a role-free and link-free co-ordinate indexing system? (1966)
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- Abstract
- A study of the number of irrelevant documents retrieved in a co-ordinate indexing system that does not employ eitherr roles or links. These tests were based on one hundred actual inquiries received in the library and therefore an evaluation of recall efficiency is not included. Over half the enquiries produced no noise, but the mean average percentage niose figure was approximately 33 per cent based on a total average retireval figure of eighteen documents per search. Details of the size of the indexed collection, methods of indexing, and an analysis of the reasons for the retrieval of irrelevant documents are discussed, thereby providing information officers who are thinking of installing such a system with some evidence on which to base a decision as to whether or not to utilize these devices
- Source
- Journal of documentation. 22(1966), S.203-209
-
Malin, M.V.: ¬The Science Citation Index : a new concept in indexing (1968)
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- Theme
- Citation indexing
-
Model, F.: 'Citation indexing' und Rückwärtskatalogisierung' : Beispiele für Zitatendokumentation (1964)
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- Theme
- Citation indexing
-
Moss, R.: Minimum vocabularies in information indexing (1967)
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-
Farradane, J.E.L.: Relational indexing (1961)
0.03
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-
Garfield, E.; Sher, I.H.: New factors in the evaluation of scientific literature literature through citation indexing (1963)
0.03
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- Theme
- Citation indexing
-
Jonker, F.: Indexing theory, indexing methods, and search devices (1964)
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-
Rübesame, O.: Probleme des geographischen Schlüssels (1963)
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- Date
- 17. 1.1999 13:22:22
-
Schneider, K.: Fünf Jahre KWIC-Indexing nach H.P. Luhn (1963)
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-
Zunde, P.; Dexter, M.E.: Indexing consistency and quality (1969)
0.03
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-
Collison, R.: Indexing books : a manual of basic principles (1962)
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-
Cleverdon, C.W.: Aslib Cranfield research project : report on the testing and analysis of an investigation into the comparative efficiency of indexing systems (1962)
0.03
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-
Black, J.D.: ¬The keyword : its use in abstracting, indexing and retrieving and information (1962)
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-
Costello, J.C.: Uniterm indexing principles, problems and solutions (1961)
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-
Kessler, M.M.: Bibliographic coupling between scientific papers (1963)
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- Theme
- Citation indexing
-
Damerau, F.J.: ¬An experiment in automatic indexing (1965)
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-
Maron, M.E.: Automatic indexing : an experimental inquiry (1961)
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