Search (58 results, page 1 of 3)

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Abstract

Classification plays a very important role in the traditional organization and manual retrieval of documents. The advantages of classification are becoming evident again in the networked environment, in the areas of online browsing, organization of non text information, management of hypertext, and as a common language for the organization of information, which will promote the integration of classification schemes and thesauri

Footnote

[In Chinesisch]

Source

Journal of the China Society for Scientific and Technical Information. 17(1998) no.1, S.19-22

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Abstract

Uses the results of various user studies to offer some insight into user behaviour in connection with OPAC access points and to explore conditions for subject searching, the difficulties involved and the matching of queries to subject headings. Sums up suggestions for the improvement of subject access to OPACs

Footnote

In Chinesisch

Source

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

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Abstract

The concept of faceted classification has its long history and importance in the human civilization. Recently, more and more consumer Web sites adopt the idea of facet analysis to organize and display their products or services. The aim of this article is to review the origin and develpment of faceted classification, as well as its concepts, essence, advantage and limitation. Further, the applications of faceted classification in various domians have been explored.

Date

27. 5.2007 22:19:35

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Abstract

Library OPACs have long been the gateways between users and information. They present to users the achievements of library automation, and are the most widely available automated retrieval systems and the first that many user encounter. Current trends in OPAC design are toward a user oriented, individual information service which can meet the different needs of users with a variety of background and interests. Compared with the rather inactive, short term and general information service of conventional systems, this type of system focuses on active, long term and personalized service. Proposes a framework for the design of such an OPAC and discusses some recent developments in personalized information service

Date

4. 8.1998 19:36:22

Footnote

[In Chinesisch]

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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

Footnote

In Chinesisch

Theme

Semantisches Umfeld in Indexierung u. Retrieval

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Theme

Konzeption und Anwendung des Prinzips Thesaurus

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Abstract

Discusses the growth of automated catalogues in Taiwan and the rest of the world. Considers an automated catalogue as the prerequisite for a complete bibliographical database. Covers the meaning, functions, scope, pre-operation, post-project and future development of automated cataloguing

Footnote

In Chinesisch

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Abstract

Discusses the 5 fundamental concepts of information retrieval addressed by Patrick Wilson - information, aboutness, relevance, need and use. Although it is impossible to reach consensus definitions for these concepts it can be helpful for future discussions in information retrieval researches

Footnote

In Chinesisch

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Abstract

Discusses the theory and practice of bibliographic control, provides a definition for a bibliographic centre and for bibliographic control in a national bibliographic centre, and discusses the current situation and future development in bibliographic control in the national bibliographic centre (of China). Makes some suggestions for planning effective bibliographic control in the national bibliographic centre as follows: to collect materials; to recruit advisers; to set up a mission, goals and objectives; to make and implement action plans; to put in place the organizational structure of the bibliographic database; and to make plans for cooperating with other area or national bibliographic centres

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Abstract

Capability and capacity in handling the topology of a special subject information field has made infomapping techniques and systems instrumental in information searching, monitoring and navigation. Applying the technique to communication networks can reveal the intellectual relationships among junior and senior researchers in the field, and can also show the continuing popularity of a particular researcher's citation record over time. Reports the use of Java in making a cartoon series of chronological maps based on citation analysis on a special subject field (nutrition and dietetics). The map making methods, Java programming, and statistical analysis of the map data are presented, and the advantage and significance of constructing Java maps in enhancing information retrieval discussed. Further technical developments in applying VRML to link together a 3-D spatial indexing system and a 2-D HTML Web site are suggested

Footnote

In Chinesisch

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Footnote

In Chinesisch

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Footnote

[In Chinesisch]

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Abstract

In remembrance of Magda Heiner-Freiling who dedicated her professional efforts in promoting the sharing of subject access among world libraries, we sincerely wish to add our contribution to the endeavor she started and dreamed of finishing by writing this paper in Chinese, introducing SKOS and discussing its applications in transferring the largest controlled vocabulary in China, the Chinese Classified Thesaurus (CCT), into a SKOS-based knowledge organization system (KOS). The paper discusses the conceptual models of concept-based and term-based systems, the converting solutions of CCT, and the potential usage of a KOS registry built on SKOS and other Web-based protocols and technologies.

Footnote

In Chinesisch

Source

New pespectives on subject indexing and classification: essays in honour of Magda Heiner-Freiling. Red.: K. Knull-Schlomann, u.a

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Abstract

The incresing ned to make library materials more speedily available to impatient readers is causing libraries in Taiwan to become interested in copy cataloguing and outsourcing (contracting out). Reviews the concept of the Core Bibliographic Record in the USA as an important part of cooperative cataloguing systems and studies the Program for Cooperative Cataloguing (PCC) Core

Footnote

In Chinesisch

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Abstract

Chinese MARC (CMARC) adopts the UNIMARC approach rather than the USMARC tradition. The 4th edition of CMARC was published in 1997 and completely abandons the Linking Entry Block feature in favour of USMARC features. Concludes that CMARC has lost its compatibility with UNIMARC and this may cause chaos in the near future

Footnote

In Chinesisch

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Abstract

Describes a study in which 6505 papers from 23 Chinese scientific and technical journals published in the 7 years from 1990 to 1996 were investigated. The quantity, languages and types of citations were analyzed and compared with data from the 1970s. In this way the progress of citations for Chinese scientific and technical journal literature can be seen

Footnote

In Chinesisch

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Abstract

Discusses the theory and practice of subject headings, the principle and application of subject heading lists in various countries, and the present situation of the Chinese subject heading list in Taiwan. Suggests improvements to the chinese Subject Headings as follows: to increase the number of subject headings; to control the vocabulary to be used; to use fixed fields of Chinese MARC, performing the partial function of subdivision in the chinese Subject Headings; to announce the addition, correction and deletion of subject headings regularly and to compile a users' manual; to establish a national subject heading authority file in the MARC format; and to use the Chinese Subject Headings to organize Internet resources

Footnote

[In Chinesisch]

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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

Footnote

[In Chinesisch]

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Abstract

In a prototype model of a computer aided Chinese classification system, 4 different modules were included: the keyword searching type, user's predomination type, expert wizard type and versatile type. These 4 modules work in different ways whilst sharing the same concept. The keyword searching type finds the most suitable category by scanning the keywords of all categories in a database; it is useful for entrance level staff. The user's predomination type allows the user to key in the proper category to size down the number of returning data; the user then picks the best category by browsing the built in keywords. This module is suitable for professional librarians. The expert wizard type actively leads the user to choose the best category one by one. The versatile type is a mixture of the other 3 types

Footnote

[In Chinesisch]

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Abstract

Based on the author's practice and experience in compiling 'Cataloguing rules for Chinese documents', explains the background to the rules and their style, highlighting various points which need attention when using them

Footnote

[In Chinesisch]