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Showing papers on "Ranking (information retrieval) published in 1980"


Journal ArticleDOI
TL;DR: A technique is described for automatic reformulation of boolean queries based on patron relevance judgements of an initial retrieval, prevalence measures are derived for terms appearing in the retrieved set of documents that reflect a term's distribution among the relevant and non‐relevant documents.
Abstract: A technique is described for automatic reformulation of boolean queries. Based on patron relevance judgements of an initial retrieval, prevalence measures are derived for terms appearing in the retrieved set of documents that reflect a term's distribution among the relevant and non‐relevant documents. These measures are then used to guide the construction of a boolean query for a subsequent retrieval. To illustrate the technique, a series of tests is described of its application to a small data base in an experimental environment. Results compare favourably with feedback as employed in a SMART‐type system. More extensive testing is suggested to validate the technique.

44 citations




Journal ArticleDOI
TL;DR: In many studies the experimenter has under consideration several (two or more) alternatives, and is studying them in order to determine which is the best (with regard to certain specified criteria of "goodness") as discussed by the authors.
Abstract: In many studies the experimenter has under consideration several (two or more) alternatives, and is studying them in order to determine which is the best (with regard to certain specified criteria of “goodness”). Such an experimenter does not wish basically to test hypotheses, or construct confidence intervals, or perform regression analyses (though these may be appropriate parts of his analysis); he does wish to select the best of several alternatives, and the major part of his analysis should therefore be directed towards this goal. It is precisely for this problem that ranking and selection procedures were developed. This paper presents an overview of some recent work in this field, with emphasis on aspects important to experimenters confronted with selection problems.

24 citations




Journal ArticleDOI
V. Stibic1
TL;DR: Ranking of retrieved documents in the descending order of their association with the inquiry has been known in theory for a very long time, but so far it has found only limited use in operational online systems.
Abstract: Ranking of retrieved documents in the descending order of their association with the inquiry has been known in theory for a very long time, but so far it has found only limited use in operational online systems, Because of the ranking, the documents that are probably relevant are concentrated at the top of the set of documents retrieved and submitted for display. This affects the practical strategy of online retrieval that differs essentially from the search strategy in the traditional Boolean‐oriented systems: the inquirer does not need to reformulate his inquiry if it yields too many documents nor to be too anxious at the selection of inquiry terms. Consequently, types of inquiry can be used that are inadmissible in Boolean‐oriented systems or in systems that rank only a limited number of documents.

9 citations



Journal ArticleDOI
TL;DR: In this paper, the authors established the status ranking of ten different sectors of manufacturing and non-manufacturing industry through analysis of the background and education of managers in these sectors, and the ranking was then given confirmation by salary data.
Abstract: This paper is concerned to establish the status ranking of ten different sectors of manufacturing and non-manufacturing industry through analysis of the background and education of managers in these sectors. The ranking is then given confirmation by salary data. It is suggested that this ranking is based on differences between industries in science and technology, with corresponding differences in knowledge and skill needs and thus in the meaning of ‘management’, in sources of managerial recruitment, and in qualifications and requirements for education and training.

5 citations


DissertationDOI
01 Jan 1980
TL;DR: White, Bob E., "Ranking capital investment alternatives: a computer simulation" (1980) as mentioned in this paper, presented from a copy of a document sent to us for microfilming.
Abstract: White, Bob E., "Ranking capital investment alternatives: a computer simulation " (1980). Retrospective Theses and Dissertations. Paper 6815. INFORMATION TO USERS This was produced from a copy of a document sent to us for microfilming. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help you understand markings or notations which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure you of complete continuity. 2. When an image on the film is obliterated with a round black mark it is an indication that the film inspector noticed either blurred copy because of movement during exposure, or duplicate copy. Unless we meant to delete copyrighted materials that should not have been filmed, you will find a good image of the page in the adjacent frame. 3. When a map, drawing or chart, etc., is part of the material being photo­ graphed the photographer has followed a definite method in "sectioning" the material. It is customary to begin filming at the upper left hand comer of a large sheet and to continue from left to right in equal sections with small overlaps. If necessary, sectioning is continued again—beginning below the first row and continuing on until complete. 4. For any illustrations that cannot be reproduced satisfactorily by xerography, photographic prints can be purchased at additional cost and tipped into your xerographic copy. Requests can be made to our Dissertations Customer Services Department. 5. Some pages in any document may have indistinct print. In all cases we have filmed the best available copy. 1980 Signature was redacted for privacy.

5 citations



Book ChapterDOI
TL;DR: In this paper, it was shown that the weights supplied have relevance only in the population for which they were determined, and that they can be applied as logical input only in certain methods of data analysis with which they happened to be compatible.
Abstract: Ranking methods have been justified on grounds that since they supply weights which measure species importance, they actually supply the user with the information required to produce a short list of species to economize the analysis without unduly distorting the results. But the weights supplied have relevance only in the population for which they were determined. As further limitation, they can be applied as logical input only in certain methods of data analysis with which they happened to be compatible. Weights representing the independent components of the total sum of squares (Orloci 1973) are examples. These can be used for input in data analysis only under such circumstances of application in which the sum of squares represents a meaningful concept.

Journal ArticleDOI
TL;DR: An online system of associative information retrieval that uses a network representation of the information in a bibliographic database and a processing paradigm modeling a continuing flow of user interest through the network to implement associative retrieval and query modification is described.
Abstract: An online system of associative information retrieval is described. The system uses a network representation of the information in a bibliographic database and a processing paradigm modeling a continuing flow of user interest through the network to implement associative retrieval and query modification. The system is capable of relevance feedback, thesaurus and statistical query expansion, Boolean and best‐match searching, and retention of associations based on previous search experience. The query modification capability stems from the ability to incorporate thesaurus or dictionary linkages between terms and preferred or alternative forms and to generate associations between sets of documents and the vocabulary they contain. The former capability allows the automatic incorporation in a query of pre‐defined equivalent or alternate terms. The use of terms associated with retrieved documents allows automatic discovery and inclusion of related vocabulary, index terms, and subject categories and may improve the effectiveness of free text searching in databases incorporating controlled vocabulary indexing and subject classification schemes. A pilot version of the system has been implemented on the DECsystem‐10 and tested on small scale files;illustrative sample searches are presented.


01 Mar 1980
TL;DR: The change in attitude and outlook and awareness to the new responsibilities among the librarians and specialists in library and information science, provide them the opportuy nity and new incentive for research and innovation.
Abstract: Like any other academic discipline there has been phenomenal increase in the research and scholarly output in the field of library science in recent years. Correspondingly there has been literature deluge in the field reporting the results of research and other scholarly pursuits. The change in attitude and outlook and awareness to the new responsibilities among the librarians and specialists in library and information science, provide them the opportuy nity and new incentive for research and innovation. Library schools and institutions study problems and contribute by reporting their interesting decisions. Their contributions are reported mostly through articles in journals, which are the primary media of communication. The quantum of journal growth in library science is like in any other developing sciences. Library science is also entering into a new horizon and it has attained the status of Information Science ,from Library Economy of Dewey in 1876. The literature growth makes a subject rich and it is necessary to know the



Journal ArticleDOI
TL;DR: The authors found that there was a high level of agreement about what the social standing of occupations is and also about what it ought to be and that the degree of discrepancy perceived between an actual and an ideal situation was found to be unaffected by sex, number of years service as a Careers Officer, possession of a university degree, intention to vote in a forthcoming general election and newspaper reading habits.
Abstract: A survey was undertaken of the way in which Careers Officers rank occupations according to their social standing. It was found that there was a high level of agreement about what the social standing of occupations is and also about what it ought to be. The degree of discrepancy perceived between an actual and an ideal situation was found to be unaffected by sex, number of years service as a Careers Officer, possession of a university degree, intention to vote in a forthcoming general election and newspaper reading habits. Subgroups who saw the least amount of discrepancy were successful young Careers Officers, older t^areers Officers, those without experience of other occupations and those who would vote Conservative in a forthcoming general election. This research does not support the criticisms now being put forward oi existing research within this area. There have been a large number of studies of occupational prestige undertaken. The tenor of much of this research has been to show the high level of intra-and inter-sodetal agreement. Indeed Marsh' called it 'one of the great empirical invariants in sociology'. Hodge, Treinian and Rossi^ reviewing case studies from 24 countries concluded that 'ratings from a few respondents, however chosen, duplicate very well those obtained from larger and more representative samples'. In spite of this consensus there have been doubts expressed by various writers. Gerstl and Cohen' in a study of 977 engineers and 1063 members of the general public noted a high degree of agreement about the relative positions of the occupations ranked, but they

Journal ArticleDOI
01 Sep 1980
TL;DR: In the context of experiential exercises, this article suggested combining two different exercises as a way to increase learning in a reduced total time, where the success of one may enrich the other but a failure in one will not harm the second.
Abstract: courses but it is particularly an issue when using experiential exercises. Stumpf (1979) suggested combining two different exercises as a way to increase learning in a reduced total time. To the extent that objectives, procedures, and concepts are interrelated, combining exercises may enrich the data generated for participants. However, exercises which involve relatively noninterdependent objectives may also be desirable because the success of one may enrich the other but a failure in one will not harm the second. An example of the second method of combining exercises is DeVito’s (1976) suggestion of introducing a discussion of Machiavellianism into an individual and group ranking task. A further extension discussed here is to form groups on the basis of Mach-score similarity and Mach-score differences. Without harming the basic objectives of the group consensus exercise, the manipulation of group membership enriches the resulting experience with somewhat predictable results.