Search (40 results, page 2 of 2)

Yongcheng, W.; Xiaoming, G.; Lixia, W.: Automatic indexing on subject of Chinese text (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.3, S.219-225

Tseng, Y.-H.: Keyword extraction techniques and relevance feedback (1997) 0.00
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Abstract

Automatic keyword extraction is an important and fundamental technology in an advanced information retrieval systems. Briefly compares several major keyword extraction methods, lists their advantages and disadvantages, and reports recent research progress in Taiwan. Also describes the application of a keyword extraction algorithm in an information retrieval system for relevance feedback. Preliminary analysis shows that the error rate of extracting relevant keywords is 18%, and that the precision rate is over 50%. The main disadvantage of this approach is that the extraction results depend on the retrieval results, which in turn depend on the data held by the database. Apart from collecting more data, this problem can be alleviated by the application of a thesaurus constructed by the same keyword extraction algorithm
Wu, C.-J.: Metadata and future developments in cataloguing (1997) 0.00
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Abstract

Metadata is a resource which can assist the information retrieval of digital documents on the Internet. In designing a metadata system, it is necessary to consider the characteristics of digital documents, such as the variety of file formats, frequent format transformation and the difficulty of distinguishing between the different versions. Provides a brief analysis of some existing metadata formats, and introduces several pronciples for the future development of cataloguing on the Internet. Briefly describes the Metadata Experimental System (MES) currently under development, and located at the author's homepage

Source

Journal of information; communication; and library science. 4(1997) no.2, S.42-52
Tseng, Y.-H.: Solving vocabulary problems with interactive query expansion (1998) 0.00
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Abstract

One of the major causes of search failures in information retrieval systems is vocabulary mismatch. Presents a solution to the vocabulary problem through 2 strategies known as term suggestion (TS) and term relevance feedback (TRF). In TS, collection specific terms are extracted from the text collection. These terms and their frequencies constitute the keyword database for suggesting terms in response to users' queries. One effect of this term suggestion is that it functions as a dynamic directory if the query is a general term that contains broad meaning. In term relevance feedback, terms extracted from the top ranked documents retrieved from the previous query are shown to users for relevance feedback. In the experiment, interactive TS provides very high precision rates while achieving similar recall rates as n-gram matching. Local TRF achieves improvement in both precision and recall rate in a full text news database and degrades slightly in recall rate in bibliographic databases due to the very limited source of information for feedback. In terms of Rijsbergen's combined measure of recall and precision, both TS and TRF achieve better performance than n-gram matching, which implies that the greater improvement in precision rate compensates the slight degradation in recall rate for TS and TRF

Source

Journal of library and information science. 24(1998) no.1, S.1-18

Huang, M.-h.: End-users' searching behaviour : changes in search type over time (1996) 0.00

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Source: Bulletin of library and information science. 1996, no.16, S.7-20

Huang, S.-l.: Data structure and searching strategy (1995) 0.00

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Abstract: Reports the results of a study of the effectiveness of online searching which used TULIPS, the National Taiwan University's OPAC system, to examine the relationship between data structure and information retrieval systems. Results show the efficiency of online searching can be improved by the use of indexes and by searching by subject

Chen, P.: ¬The access to Internet : an explorative study (1997) 0.00

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Source: Bulletin of library and information science. 1997, no.20, S.1-12

Liu, H.-M.C.: Selection and comparison of WWW search tools (1996) 0.00

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Source: Journal of information; communication; and library science. 2(1996) no.4, S.41-63

Lee, Y.-R.: ¬A study on the conditions of using OPAC access points and subject searching by users (1997) 0.00

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Source: Bulletin of library and information science. 1997, no.22, S.39-55

Chang, H.-C.: Introduction to the fifth edition of National Library of Medicine Classification (1998) 0.00

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Source: Bulletin of library and information science. 1998, no.25, S.6-15

Li, Z.: Research on dynamic morphological indexing (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.3, S.226-229

Xianghao, G.; Yixin, Z.; Li, Y.: ¬A new method of news test understanding and abstracting based on speech acts theory (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.4, S.257-262

Lin, Z.; Baoming, Z.: Comparative study of WWW search tools (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.4, S.273-280

Jianchao, X.; Ming, H.; Milin, S.: On indexing descriptors for document archive (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.4, S.263-265

Xiulan, H.: Research into the progress of citations for Chinese scientific and technical literature (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.6, S.467-473

Yiqun, W.; Zhonghui, Z.; Li, Z.: Experimental study of machine factors and cognitive abilities of users (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.6, S.412-418

Huang, M.-h.: Factors affecting relevance judgement : a preliminary study (1998) 0.00

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Source: Journal of information; communication; and library science. 4(1998) no.3, S.39-50

Huang, M.-h.: Error analysis of end users in online searching (1995) 0.00
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Abstract

Uses an information processing approach to analyse the behaviour of end users in searching online bibliographic databases, with particular emphasis on errors made. Following instruction in online searching, 41 students and 3 faculty end users conducted 79 subject searches. Analysis of search transcripts identified 119 reasons for errors. Errors occured most frequently in connection with functions, moves, and elements of 'create and develop sets' and 'display and print records'. Surprisingly, the results do not indicate that end users make errors less frequently as they gain more experience and practice, although syntax-related errors do decrease with time

Tsay, M.-Y.: From Science Citation Index to Journal Citation Reports, amd criteria for journals evaluation (1997) 0.00

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Source: Journal of information; communication; and library science. 4(1997) no.2, S.27-41

Huang, Y.-L.: ¬A theoretic and empirical research of cluster indexing for Mandarine Chinese full text document (1998) 0.00

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Source: Bulletin of library and information science. 1998, no.24, S.44-68

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