ISSN:0002-8231    

DOI:10.1002/asi.4630340402

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

年代:1983

数据来源: WILEY

摘要:

AbstractThe citation data of eight leading biochemistry journals and eight leading plant physiology journals show that the primary reasons for the lower citation potentials of the plant physiology articles are as follows: (I) the readership other than specialists in the subject is narrower for plant physiology than for blochemlstry journals, (2) plant physiologists can cite fewer thematically relevant new articles than biochemists, and (3) plant physiology research fields are relatively isolated, whereas biochemistry research fields are relatively integrated. Evidence Is found that citation aging does not mean obsolescence. It is more proper to speak about the high cltedness of recent articles than about the low citedness of older ones.

ISSN:0002-8231    

DOI:10.1002/asi.4630340403

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

年代:1983

数据来源: WILEY

摘要:

AbstractAs computer‐based information retrieval and communication systems become more commonplace, researchers have a greater opportunity to evaluate the uses and impacts of new communication technologies. The systems and the kinds of data now available are discussed along with advantages and disadvantages of using computer‐monitored d

ISSN:0002-8231    

DOI:10.1002/asi.4630340404

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

年代:1983

数据来源: WILEY

摘要:

AbstractMathematical concepts used in modern algebra are useful for modeling aspects of information systems. One such aspect is the syndetic structure employed in information retrieval systems. The equivalence classes of modern algebra can represent the See Also components of traditional library catalogs, while partial orderings and mappings assist in modeling syndetics in more sophisticated systems, such as thesauri. Utilizing the full strength of algebraic techniques should provide improvements to the models suggested in this article.

ISSN:0002-8231    

DOI:10.1002/asi.4630340405

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

年代:1983

数据来源: WILEY

摘要:

AbstractModern information retrieval systems are designed to supply relevant information in response to requests received from the user population. In most retrieval environments the search requests consist of keywords, or index terms, interrelated by appropriate Boolean operators. Since it is difficult for untrained users to generate effective Boolean search requests, trained search intermediaries are normally used to translate original statements of user need into useful Boolean search formulations. Methods are introduced in this study which reduce the role of the search intermediaries by making it possible to generate Boolean search formulations completely automatically from natural language statements provided by the system patrons. Frequency considerations are used automatically to generate appropriate term combinations as well as Boolean connectives relating the terms. Methods are covered to produce automatic query formulations both in a standard Boolean logic system, as well as in an extended Boolean system in which the strict interpretation of the connectives is relaxed. Experimental results are supplied to evaluate the effectiveness of the automatic query formulation process, and methods are described for applying the automatic query formulation process in practice.

ISSN:0002-8231    

DOI:10.1002/asi.4630340406

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

年代:1983

数据来源: WILEY

摘要:

AbstractOnline searching is a dynamic process requiring an interactive and iterative dialogue to fully utilize its potential. However, such an interaction results in communication barriers at the human‐computer interface due to demands and limits of human memory and human information processing. An algorithmic method of searching, using Boolean negation to eliminate redundancy and reduce the cognitive strain of this barrier is proposed. Experimental data testing the efficacy of the method are also presented. Furthermore, the correlation of differences in cognitive processes to the searcher's comprehension of the system and searching behavior are explore

ISSN:0002-8231    

DOI:10.1002/asi.4630340407

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

年代:1983

数据来源: WILEY

摘要:

AbstractThe following discussion is based upon the assumption that in the future, a substantial portion of scholarly material will be published only‐or at least primarily‐in electronic form. I will not attempt to predict a date or estimate the proportion, but electronic publishing of scholarly articles will certainly become significant in the not‐to‐distant future. When it does, there will be some interesting ramifications, which I have not seen discussed previously. It is to these I am addressing this dis

ISSN:0002-8231    

DOI:10.1002/asi.4630340408

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

年代:1983

数据来源: WILEY

摘要:

AbstractA study was conducted of users of an interactive database search system in order to obsenre and measure how they adapted to the system, which was new to them. Subjects were selected from three categories of prior computer experience and each was assigned to use one of three search languages which varied in complexity or logical power. All searched the same database of newspaper clippings. User performance appears to be a function of how well suited the language is to the user and the problem being addressed, rather than either language complexity or user experience, alone. A major conclusion is that languages should be designed to suit recognizable classes of users, rather than all users as a whole.

ISSN:0002-8231    

DOI:10.1002/asi.4630340409

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

年代:1983

数据来源: WILEY

摘要:

AbstractThe rate of citation duplication was examined In three databases: MEDLINE, BIOSIS, and LIFE SCIENCES COLLECTION. Duplicate citations were found to be more pertinent than unique citations. The duplicate citations came from a highly compact literature, whlle those from a single database were very widely scattered. The pertinent duplicated citatlons were more likely to be retrieved in searches that had more terms overall, had a higher percentage of thesaurus terms, and had terms which appeared in both title and abstract. These results suggest that the rate of duplication of citations in multidatabase searches may be used to rank output according to probable pertinence.

ISSN:0002-8231    

DOI:10.1002/asi.4630340410

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.4630340411

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

年代:1983

数据来源: WILEY