摘要:

AbstractAuthor cocitations form the base of a general technique of bibliogrpahic retrieval and of mapping the strucutre of literatures. The technique was used here in a largescale retrieval of the Social Indicators (SI) literature and a computerized mapping, through multidimensional scaling and clustering, of key SI contributors as perceived by citers during 1972‐1980. Clusters of points on the map are interpreted as authors similar in perceived subject matter and style of work; other interpretable features also eemerge. The map conforms well with independent reviews of the SI literature, actually illustrating some of the judgments they contain. It is suggested that such mappings may become a stimulus and complement to literature reviews in the futur

ISSN:0002-8231    

DOI:10.1002/asi.4630340502

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

摘要:

AbstractPartI. Flowcharts of the Filling OperationsThe newALA filing Rulesare displayed in the form of flowcharts, and the operations of filing are analyzed and exemplified. It is found that, contrary to claims made in the work, the rules are not entirely applicable to computerized filing because several rules and exceptions to them are not programmable and need human intervention at input or output, especially if character strings are not edited according to the MARC format. Suggestions for further streamlining and simplification of the filing rules are made, omissions are pointed out, and a number of mistakes are corrected.

ISSN:0002-8231    

DOI:10.1002/asi.4630340503

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

摘要:

AbstractThe fundamental problem of information retrieval is how to decide, on the basis of clues, each of which is an imperfect indicator of docuemnt relevance, which documents to retrieve and the order in which to present them. The most satisfying conceptual approaches have been based on probabilistic decision theoretic models. However, those previously used make a decision about a single document at a time, and extend this to retreiv e multiple docuemnts by ignoring interdocument interaction. The purpose of the articles is to present decision‐theoretic models which intrinsically include the multiple retrieval case. In particular, we argue that information retrieval should be envisioned as a process, in which the information retrieval system responds to a request by presenting documents to the patron in a sequence, gathering feedback as the process proceeds, and using this information to modify future retrieval. A retrieval strategy that naturally results from this model is described. Two examples are examined in detai

ISSN:0002-8231    

DOI:10.1002/asi.4630340504

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

摘要:

AbstractThis article examines the usage patterns of the ELHILL retrieval program of the National Library of Medicine's MEDLARS system. Based on a sample of 6759 searches, the study analyzes the frequency of various commands and command options, classifies messages issued by the system, and investigates searcher error rates. The article concludes with suggestions for improving and redesigning both the program and query language.

ISSN:0002-8231    

DOI:10.1002/asi.4630340505

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

摘要:

AbstractSearchers of bibliographical databases are faced with a multitude of choices, but very few clues, in developing precise searchy strategies. this sutdy attemps to discover subject patterns and clusters among databases in order to provide clues about differences and similarities among them. Descriptors were taken at random from sev en subject categories in the ERIC thesaurus and used as search terms on Bibliographic Retrieval. Services' CROSS database. The resulting 1,830,312 postings from 54 databases were analyzed in two ways: (1) an Expectation Ratio was computed which allowed ranking databases in order of their relative responses to the subject searches; (2) a cluster analysis was conducted to discover possible subject relationships among databases. The results show five large cclusters: Technology, Life Sciences, Bibliography, Business and Industry, and Education; and 12 well‐defined subclusters. It also shows several dimensions which cut across clusters, such as Research and Social and Economic Enterprise, and Indicates that there are nonobvious similarities and differences among databases which may provide clues to more effective search strategy developmen

ISSN:0002-8231    

DOI:10.1002/asi.4630340506

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

摘要:

AbstractAn algorithmic approach for generating a loosely structured set of documents based upon references and citations is described and initially tested. The technique is based upon a small subset (or single relevant document) of known relevant docuemnts which form the basis of the network of structured references and citations. Suggestions for improvement and refinement point out potentially ripe research avenues for investigating the indentification of relevant docuemnts pertaining to emerging interdisciplinary subject areas.

ISSN:0002-8231    

DOI:10.1002/asi.4630340507

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

摘要:

AbstractA moderate bu tconsistent positive correlation was found between the number of citations in a paper and the number of times it is cited. This result refers to a collection of papers published in theAmerican Sociologyin 1972 and 1973. The followign variables were controlled: journal, year of publicatiions, subject category of paper, number of authors, and seniority of author. Several explanations of this finding are suggested.

ISSN:0002-8231    

DOI:10.1002/asi.4630340508

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630340509

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY

ISSN:0002-8231    

DOI:10.1002/asi.4630340501

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1983

数据来源: WILEY