-
Wu, C.-J.: Experiments on using the Dublin Core to reduce the retrieval error ratio (1998)
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- Abstract
- In order to test the power of metadata on information retrieval, an experiment was designed and conducted on a group of 7 graduate students using the Dublin Core as the cataloguing metadata. Results show that, on average, the retrieval error rate is only 2.9 per cent for the MES system (http://140.136.85.194), which utilizes the Dublin Core to describe the documents on the World Wide Web, in contrast to 20.7 per cent for the 7 famous search engines including HOTBOT, GAIS, LYCOS, EXCITE, INFOSEEK, YAHOO, and OCTOPUS. The very low error rate indicates that the users can use the information of the Dublin Core to decide whether to retrieve the documents or not
- Source
- Journal of library and information science. 24(1998) no.1, S.50-64
-
Hsueh, L.-K.: ¬The application of PRECIS in indexing Chinese documents : an experimental study (1993)
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- Abstract
- Describes a study aimed at exploring possible applications for PRECIS for indexing Chinese documents, generating Chinses subject indexes, and for facilitating online information retrieval. A random sample of 498 Chinese subject indexing strings was taken from the Index to Chinese Periodical Literature and a comprehensive test of the PRECIS role operators was carried out. 18 problem areas were isolated and grouped into 8 categories. These problems stemmed mainly from syntactic differences between English and Chinese. Suggests modifications of and additions to the existing role operators and the accompanying software to overcome these problems
- Source
- Journal of library and information science. 19(1993) no.1, S.40-75
-
Yi, H.; Shubai, L.: Application of classification in information organization under the networking environment (1998)
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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
- Source
- Journal of the China Society for Scientific and Technical Information. 17(1998) no.1, S.19-22
-
Longshu, L.; Xia, Z.: On an aproximate fuzzy information retrieval agent (1998)
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- Abstract
- Discusses online approximate information retrieval based on fuzzy mathematics. Defines fuzzy semantics. Presents an approximate fuzzy matching algorithm and an algorithm for a fuzzy word indexing agent for approximate retrieval. Also presents a case study demonstrating approximate fuzzy matching
- Source
- Journal of the China Society for Scientific and Technical Information. 17(1998) no.3, S.180-184
-
Tsai, B.-s.: Infomapping in information retrieval (1997)
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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
- Source
- Journal of information; communication; and library science. 4(1997) no.2, S.3-13
-
Pu, H.-T.: Exploration of personalized information service for OPAC (1997)
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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
-
Huang, M.-h.: Five fundamental concepts in information retrieval (1996)
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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
- Source
- Bulletin of library and information science. 1996, no.19, S.7-21
-
Huang, S.-l.: Data structure and searching strategy (1995)
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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
-
Jin, Z.; Yuan, C.: On the ambiguity of information retrieval for visualization (1998)
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- Abstract
- Addresses the issue of ambiguity of information retrieval for visualization in respect of distance and angle retrieval. Analyzes the cause of the ambiguitiy, its impact on information retrieval, and its resolution. Describes a system where the techniques described are realized
- Source
- Journal of the China Society for Scientific and Technical Information. 17(1998) no.3, S.175-179
-
Huang, M.-H.: ¬The evaluation of information retrieval systems (1997)
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- Abstract
- Describes the current status of retrieval system evaluation and predicts its future development. discusses various performance measures and 'utility' concepts from a historical perspective. Also addresses the current status of search evaluation and dicusses the empirical findings of retrieval system evaluation
-
Tseng, Y.-H.: Keyword extraction techniques and relevance feedback (1997)
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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
-
Lin, W.-Y.C.: ¬The concept and applications of faceted classifications (2006)
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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
-
Yiqun, W.; Zhonghui, Z.; Li, Z.: Experimental study of machine factors and cognitive abilities of users (1998)
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- Abstract
- Describes 3 experiments undertaken to research how machine factors influence the cognitive abilities of users. The experiments dealt with presentation programs of retrieval results and user selectivity, thesaurus construction and accuracy of the subject words ascertained by the user, and menu layout and time taken by the user. Discusses findings and the satisfaction of users with present databases
- Source
- Journal of the China Society for Scientific and Technical Information. 17(1998) no.6, S.412-418
-
Wu, C.-J.: Metadata and future developments in cataloguing (1997)
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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)
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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
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Huang, Y.-L.: ¬A theoretic and empirical research of cluster indexing for Mandarine Chinese full text document (1998)
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- Abstract
- Since most popular commercialized systems for full text retrieval are designed with full text scaning and Boolean logic query mode, these systems use an oversimplified relationship between the indexing form and the content of document. Reports the use of Singular Value Decomposition (SVD) to develop a Cluster Indexing Model (CIM) based on a Vector Space Model (VSM) in orer to explore the index theory of cluster indexing for chinese full text documents. From a series of experiments, it was found that the indexing performance of CIM is better than traditional VSM, and has almost equivalent effectiveness of the authority control of index terms
- Source
- Bulletin of library and information science. 1998, no.24, S.44-68
-
Huang, M.-h.: Error analysis of end users in online searching (1995)
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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
-
Lee, Y.-R.: ¬A study on the conditions of using OPAC access points and subject searching by users (1997)
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- Source
- Bulletin of library and information science. 1997, no.22, S.39-55
-
Huang, M.-h.: End-users' searching behaviour : changes in search type over time (1996)
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- Abstract
- Identifies 6 types of searches on the basis of paudsing behaviour by using cluster analysis. The 6 types of search were highly associated with search fleuncy and the construction of a mental model. Examines learning during multiple searches on the basis of the 6 types. Finds that searchers gain more experience, increase their searching proficiency and become more fluent at searching while online. The changes of search level in multiple searches showed that most searchers moved towards greater fleuncy
- Source
- Bulletin of library and information science. 1996, no.16, S.7-20
-
Lin, Z.; Baoming, Z.: Comparative study of WWW search tools (1998)
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- Abstract
- Presents the results of online tests of 9 WWW search tools: Yahoo, AltaVista, Excite, HotBot, InfoSeek, Lycos, OpenText, WebCrawler and MetaCrawler. Makes some suggestions on the research and development of WWW search engines in China
- Source
- Journal of the China Society for Scientific and Technical Information. 17(1998) no.4, S.273-280
