Search (28 results, page 1 of 2)

0.010326747 = product of:
  0.082613975 = sum of:
    0.082613975 = weight(_text_:computer in 828) [ClassicSimilarity], result of:
      0.082613975 = score(doc=828,freq=8.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.56527805 = fieldWeight in 828, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.0546875 = fieldNorm(doc=828)
  0.125 = coord(1/8)

Abstract

Designing research on the retrieval effectiveness of computer searches on PRECIS compared with retrieval effectiveness of searches on other types of subject analysis used in computer-based information sources is a complex process. This paper explores the complexity of measuring comparative retrieval effectiveness through a comparison of the subject analysis provided by the PRECIS system for fifty articles with the subject analysis provided for the same articles by three computer-based information sources: ERIC/CIJE, LLBA/Online and PsycINFO. Objectives are: (1) to discover factors that should be taken into account when designing this type of research; and (2) to identify extraneous variables that work against internal validity in research design .

0.010326747 = product of:
  0.082613975 = sum of:
    0.082613975 = weight(_text_:computer in 2841) [ClassicSimilarity], result of:
      0.082613975 = score(doc=2841,freq=2.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.56527805 = fieldWeight in 2841, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.109375 = fieldNorm(doc=2841)
  0.125 = coord(1/8)

0.008851498 = product of:
  0.07081199 = sum of:
    0.07081199 = weight(_text_:computer in 5277) [ClassicSimilarity], result of:
      0.07081199 = score(doc=5277,freq=2.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.48452407 = fieldWeight in 5277, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.09375 = fieldNorm(doc=5277)
  0.125 = coord(1/8)

0.008479323 = product of:
  0.067834586 = sum of:
    0.067834586 = sum of:
      0.03532521 = weight(_text_:resources in 131) [ClassicSimilarity], result of:
        0.03532521 = score(doc=131,freq=2.0), product of:
          0.14598069 = queryWeight, product of:
            3.650338 = idf(docFreq=3122, maxDocs=44218)
            0.039991006 = queryNorm
          0.2419855 = fieldWeight in 131, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.650338 = idf(docFreq=3122, maxDocs=44218)
            0.046875 = fieldNorm(doc=131)
      0.032509375 = weight(_text_:22 in 131) [ClassicSimilarity], result of:
        0.032509375 = score(doc=131,freq=2.0), product of:
          0.1400417 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.039991006 = queryNorm
          0.23214069 = fieldWeight in 131, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=131)
  0.125 = coord(1/8)

Date

10. 9.2000 17:38:22

Source

Library resources and technical services. 48(2004) no.3, S.199-212

0.008196467 = product of:
  0.06557173 = sum of:
    0.06557173 = weight(_text_:europe in 1224) [ClassicSimilarity], result of:
      0.06557173 = score(doc=1224,freq=2.0), product of:
        0.24358861 = queryWeight, product of:
          6.091085 = idf(docFreq=271, maxDocs=44218)
          0.039991006 = queryNorm
        0.26919046 = fieldWeight in 1224, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          6.091085 = idf(docFreq=271, maxDocs=44218)
          0.03125 = fieldNorm(doc=1224)
  0.125 = coord(1/8)

Content

Enthält die Beiträge: BACKGROUND: Alva T STONE: The LCSH Century: A Brief History of the Library of Congress Subject Headings, and Introduction to the Centennial Essays - THEORY AND PRINCIPLES: Elaine SVENONIUS: LCSH: Semantics, Syntax and Specificity; Heidi Lee HOERMAN u. Kevin A. FURNISS: Turning Practice into Principles: A Comparison of the IFLA: Principles Underlying Subject Heading Languages (SHLs) and the Principles Underlying the Library of Congress Subject Headings System; Hope A. OLSON: Difference, Culture and Change:The Untapped Potential of LCSH - ONLINE ENVIRONMENT: Pauline Atherton COCHRANE: Improving LCSH for Use in Online Catalogs Revisited-What Progress Has Been Made? What Issues Still Remain?; Gregory WOOL: Filing and Precoordination: How Subject Headings Are Displayed in Online Catalogs and Why It Matters; Stephen HEARN: Machine-Assisted Validation of LC Subject Headings: Implications for Authority File Structure - SPECIFIC PERSPECTIVES: Thomas MANN: Teaching Library of Congress Subject Headings; Louisa J. KREIDER: LCSH Works! Subject Searching Effectiveness at the Cleveland Public Library and the Growth of Library of Congress Subject Headings Through Cooperation; Harriette HEMMASI u J. Bradford YOUNG: LCSH for Music: Historical and Empirical Perspectives; Joseph MILLER u. Patricia KUHR: LCSH and Periodical Indexing: Adoption vs. Adaptation; David P MILLER: Out from Under: Form/Genre Access in LCSH - WORLD VIEW: Magda HEINER-FREILING: Survey on Subject Heading Languages Used in National Libraries and Bibliographies; Andrew MacEWAN: Crossing Language Barriers in Europe: Linking LCSH to Other Subject Heading Languages; Alvaro QUIJANO-SOLIS u.a.: Automated Authority Files of Spanish-Language Subject Headings - FUTURE PROSPECTS: Lois Mai CHAN u. Theodora HODGES: Entering the Millennium: a new century for LCSH

0.008196467 = product of:
  0.06557173 = sum of:
    0.06557173 = weight(_text_:europe in 5366) [ClassicSimilarity], result of:
      0.06557173 = score(doc=5366,freq=2.0), product of:
        0.24358861 = queryWeight, product of:
          6.091085 = idf(docFreq=271, maxDocs=44218)
          0.039991006 = queryNorm
        0.26919046 = fieldWeight in 5366, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          6.091085 = idf(docFreq=271, maxDocs=44218)
          0.03125 = fieldNorm(doc=5366)
  0.125 = coord(1/8)

Content

Enthält die Beiträge: BACKGROUND: Alva T STONE: The LCSH Century: A Brief History of the Library of Congress Subject Headings, and Introduction to the Centennial Essays - THEORY AND PRINCIPLES: Elaine SVENONIUS: LCSH: Semantics, Syntax and Specificity; Heidi Lee HOERMAN u. Kevin A. FURNISS: Turning Practice into Principles: A Comparison of the IFLA: Principles Underlying Subject Heading Languages (SHLs) and the Principles Underlying the Library of Congress Subject Headings System; Hope A. OLSON: Difference, Culture and Change:The Untapped Potential of LCSH - ONLINE ENVIRONMENT: Pauline Atherton COCHRANE: Improving LCSH for Use in Online Catalogs Revisited-What Progress Has Been Made? What Issues Still Remain?; Gregory WOOL: Filing and Precoordination: How Subject Headings Are Displayed in Online Catalogs and Why It Matters; Stephen HEARN: Machine-Assisted Validation of LC Subject Headings: Implications for Authority File Structure - SPECIFIC PERSPECTIVES: Thomas MANN: Teaching Library of Congress Subject Headings; Louisa J. KREIDER: LCSH Works! Subject Searching Effectiveness at the Cleveland Public Library and the Growth of Library of Congress Subject Headings Through Cooperation; Harriette HEMMASI u J. Bradford YOUNG: LCSH for Music: Historical and Empirical Perspectives; Joseph MILLER u. Patricia KUHR: LCSH and Periodical Indexing: Adoption vs. Adaptation; David P MILLER: Out from Under: Form/Genre Access in LCSH - WORLD VIEW: Magda HEINER-FREILING: Survey on Subject Heading Languages Used in National Libraries and Bibliographies; Andrew MacEWAN: Crossing Language Barriers in Europe: Linking LCSH to Other Subject Heading Languages; Alvaro QUIJANO-SOLIS u.a.: Automated Authority Files of Spanish-Language Subject Headings - FUTURE PROSPECTS: Lois Mai CHAN u. Theodora HODGES: Entering the Millennium: a new century for LCSH

0.0073762485 = product of:
  0.059009988 = sum of:
    0.059009988 = weight(_text_:computer in 2184) [ClassicSimilarity], result of:
      0.059009988 = score(doc=2184,freq=2.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.40377006 = fieldWeight in 2184, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.078125 = fieldNorm(doc=2184)
  0.125 = coord(1/8)

0.0070661027 = product of:
  0.05652882 = sum of:
    0.05652882 = sum of:
      0.029437674 = weight(_text_:resources in 2337) [ClassicSimilarity], result of:
        0.029437674 = score(doc=2337,freq=2.0), product of:
          0.14598069 = queryWeight, product of:
            3.650338 = idf(docFreq=3122, maxDocs=44218)
            0.039991006 = queryNorm
          0.20165458 = fieldWeight in 2337, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.650338 = idf(docFreq=3122, maxDocs=44218)
            0.0390625 = fieldNorm(doc=2337)
      0.027091147 = weight(_text_:22 in 2337) [ClassicSimilarity], result of:
        0.027091147 = score(doc=2337,freq=2.0), product of:
          0.1400417 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.039991006 = queryNorm
          0.19345059 = fieldWeight in 2337, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=2337)
  0.125 = coord(1/8)

Date

22. 9.1997 19:16:05

Source

Visualizing subject access for 21st century information resources: Papers presented at the 1997 Clinic on Library Applications of Data Processing, 2-4 Mar 1997, Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign. Ed.: P.A. Cochrane et al

0.006572143 = product of:
  0.052577145 = sum of:
    0.052577145 = weight(_text_:network in 5698) [ClassicSimilarity], result of:
      0.052577145 = score(doc=5698,freq=2.0), product of:
        0.17809492 = queryWeight, product of:
          4.4533744 = idf(docFreq=1398, maxDocs=44218)
          0.039991006 = queryNorm
        0.29521978 = fieldWeight in 5698, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.4533744 = idf(docFreq=1398, maxDocs=44218)
          0.046875 = fieldNorm(doc=5698)
  0.125 = coord(1/8)

Abstract

Describes the shortcomings of search engines for the WWW comparing their current capabilities to those of the first generation CD-ROM products. Some allow phrase searching and most are improving their Boolean searching. Few allow truncation, wild cards or nested logic. They are stateless, losing previous search criteria. Unlike the indexing and classification systems for today's CD-ROMs, those for Web pages are random, unstructured and of variable quality. Considers that at best Web search engines can only offer free text searching. Discusses whether automatic data classification systems such as Infoseek Ultra can overcome the haphazard nature of the Web with neural network technology, and whether Boolean search techniques may be redundant when replaced by technology such as the Euroferret search engine. However, artificial intelligence is rarely successful on huge, varied databases. Relevance ranking and automatic query expansion still use the same simple inverted indexes. Most Web search engines do nothing more than word counting. Further complications arise with foreign languages

0.0059009986 = product of:
  0.04720799 = sum of:
    0.04720799 = weight(_text_:computer in 5072) [ClassicSimilarity], result of:
      0.04720799 = score(doc=5072,freq=2.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.32301605 = fieldWeight in 5072, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.0625 = fieldNorm(doc=5072)
  0.125 = coord(1/8)

0.005887535 = product of:
  0.04710028 = sum of:
    0.04710028 = product of:
      0.09420056 = sum of:
        0.09420056 = weight(_text_:resources in 119) [ClassicSimilarity], result of:
          0.09420056 = score(doc=119,freq=2.0), product of:
            0.14598069 = queryWeight, product of:
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.039991006 = queryNorm
            0.64529467 = fieldWeight in 119, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.125 = fieldNorm(doc=119)
      0.5 = coord(1/2)
  0.125 = coord(1/8)

Source

Library resources and technical services. 33(1989), S.400-412

0.0054767863 = product of:
  0.04381429 = sum of:
    0.04381429 = weight(_text_:network in 4307) [ClassicSimilarity], result of:
      0.04381429 = score(doc=4307,freq=2.0), product of:
        0.17809492 = queryWeight, product of:
          4.4533744 = idf(docFreq=1398, maxDocs=44218)
          0.039991006 = queryNorm
        0.2460165 = fieldWeight in 4307, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.4533744 = idf(docFreq=1398, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4307)
  0.125 = coord(1/8)

Abstract

The construction and updating of indexing languages depend on the organization of their hierarchical structures in order to determine the classification of related terms and, above all, to allow a constant updating of vocabulary, a condition for knowledge evolution. The elaboration of an indexing language for online catalogs of libraries' networks is important considering the diversity and specificity of knowledge areas. From this perspective, the present paper reports on the work of a team of catalogers and researchers engaged in the construction of a hierarchical structure of an indexing language for an online catalog of a university library's network. The work on hierarchical structures began by defining the categories and subcategories that form the indexing language macrostructure by using the parameters of the Library of Congress Subject Headings , the National Library Terminology and the Vocabulary of the University of São Paulo Library's system. Throughout the stages of the elaboration process of the macrostructure, difficulties and improvements were observed and discussed. The results enabled the assessment of the hierarchical structures of the languages used in the organization of the superordinate and subordinate terms, which has contributed to the systematization of operational procedures contained in an indexing language manual for online catalogs of libraries.

0.0054767863 = product of:
  0.04381429 = sum of:
    0.04381429 = weight(_text_:network in 5567) [ClassicSimilarity], result of:
      0.04381429 = score(doc=5567,freq=2.0), product of:
        0.17809492 = queryWeight, product of:
          4.4533744 = idf(docFreq=1398, maxDocs=44218)
          0.039991006 = queryNorm
        0.2460165 = fieldWeight in 5567, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.4533744 = idf(docFreq=1398, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5567)
  0.125 = coord(1/8)

Abstract

Subject searching is difficult with traditional text-based online public access library catalogues (OPACs), and the next-generation discovery layers are keyword searching and result filtering tools that offer little support for subject browsing. Next-generation OPACs ignore the rich network of relations offered by controlled subject vocabulary, which can facilitate subject browsing. A new generation of OPACs could leverage existing information-organization investments and offer online searchers a novel browsing and searching environment. This is a case study of the design and development of a virtual reality subject browsing and information retrieval tool. The functional prototype shows that the Library of Congress subject headings (LCSH) can be shaped into a useful and usable tree structure serving as a visual metaphor that contains a real world collection from the domain of science and engineering. Formative tests show that users can effectively browse the LCSH tree and carve it up based on their keyword search queries. This study uses a complex information-organization structure as a defining characteristic of an OPAC that goes beyond the standard keyword search model, toward the cutting edge of online search tools.

0.004425749 = product of:
  0.035405993 = sum of:
    0.035405993 = weight(_text_:computer in 2322) [ClassicSimilarity], result of:
      0.035405993 = score(doc=2322,freq=2.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.24226204 = fieldWeight in 2322, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.046875 = fieldNorm(doc=2322)
  0.125 = coord(1/8)

Abstract

The introduction of computerized post-coordination has solved many of the problems of pre-coordinated subject access. However, the adoption of computerized post-coordination results in the loss of some pre-coordination benefits. Specifically, the effect of hiding terms within the context of others is lost in post-coodination which give lead status to every document term. This results in spurious matches of terms out of context. Library patrons and Internet searchers are increasingly dissatisfied with subject access performance, in part because of unmanageably large retrieval sets. The need to enhance precision and limit the size of retrieval sets motivates this work which proposes partial coordination, an approach which incorporates the advantages of computer search with the ability of pre-coordination to limit spurious partial matches and thereby enhance precision

0.004425749 = product of:
  0.035405993 = sum of:
    0.035405993 = weight(_text_:computer in 791) [ClassicSimilarity], result of:
      0.035405993 = score(doc=791,freq=2.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.24226204 = fieldWeight in 791, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.046875 = fieldNorm(doc=791)
  0.125 = coord(1/8)

Abstract

The Subject Analysis Committee Subcommittee on FAST of the Association for Library Collections & Technical Services (ALCTS) was established in the fall of 2004 to explore issues related to the implementation of the Faceted Application of Subject Terminology (FAST) subject heading schema. FAST is being developed at the Online Computer Library Center (OCLC) and is derived from the Library of Congress Subject Headings (LCSH) with a simplified syntax. This paper is based on comments by the Subject Analysis Committee Subcommittee on FAST, which reviewed a sample of 5,000 bibliographic records with both LCSH and FAST headings. It provides the library community with some understanding of FAST, a new system of subject cataloging and metadata.

0.0044156513 = product of:
  0.03532521 = sum of:
    0.03532521 = product of:
      0.07065042 = sum of:
        0.07065042 = weight(_text_:resources in 3431) [ClassicSimilarity], result of:
          0.07065042 = score(doc=3431,freq=8.0), product of:
            0.14598069 = queryWeight, product of:
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.039991006 = queryNorm
            0.483971 = fieldWeight in 3431, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.046875 = fieldNorm(doc=3431)
      0.5 = coord(1/2)
  0.125 = coord(1/8)

Abstract

With the current information environment characterized by the proliferation of digital resources, including collaboratively created and shared resources, Library of Congress Subject Headings (LCSH) is facing the challenges of effective and efficient subject-based organization and retrieval of digital resources. To explore the feasibility of utilizing LCSH in a digital environment, we might need to revisit its basic characteristics. The objectives of our study were to analyze LCSH in both syntactic and relational structures, to discover the structural characteristics of LCSH, and to identify problems and issues for the feasibility of LCSH as an effective subject access tool. This study reports and discusses issues raised by the syntactic and hierarchical structures of LCSH that present challenges to its use in a networked environment. Given the results of this study, we recommend a number of provisional future directions for the development of LCSH towards further becoming a viable system for digital and networked resources.

0.0036881242 = product of:
  0.029504994 = sum of:
    0.029504994 = weight(_text_:computer in 5148) [ClassicSimilarity], result of:
      0.029504994 = score(doc=5148,freq=2.0), product of:
        0.1461475 = queryWeight, product of:
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.039991006 = queryNorm
        0.20188503 = fieldWeight in 5148, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.6545093 = idf(docFreq=3109, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5148)
  0.125 = coord(1/8)

Abstract

Documents in digital and paper libraries may be arranged, based on their topics, in order to facilitate browsing. It may seem intuitively obvious that ordering documents by their subject should improve browsing performance; the results presented in this article suggest that ordering library materials by their Gray code values and through using links consistent with the small world model of document relationships is consistent with improving browsing performance. Below, library circulation data, including ordering with Library of Congress Classification numbers and Library of Congress Subject Headings, are used to provide information useful in generating user-centered document arrangements, as well as user-independent arrangements. Documents may be linearly arranged so they can be placed in a line by topic, such as on a library shelf, or in a list on a computer display. Crossover links, jumps between a document and another document to which it is not adjacent, can be used in library databases to allow additional paths that one might take when browsing. The improvement that is obtained with different combinations of document orderings and different crossovers is examined and applications suggested.

0.003122337 = product of:
  0.024978695 = sum of:
    0.024978695 = product of:
      0.04995739 = sum of:
        0.04995739 = weight(_text_:resources in 2181) [ClassicSimilarity], result of:
          0.04995739 = score(doc=2181,freq=4.0), product of:
            0.14598069 = queryWeight, product of:
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.039991006 = queryNorm
            0.34221917 = fieldWeight in 2181, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.046875 = fieldNorm(doc=2181)
      0.5 = coord(1/2)
  0.125 = coord(1/8)

Abstract

Recent trends, driven to a large extent by the rapid proliferation of digital resources, are forcing changes in bibliographic control to make it easier to use, understand, and apply subject data. Subject headings are no exception. The enormous volume and rapid growth of digital libraries and repositories and the emergence of numerous metadata schemes have spurred a reexamination of the way subject data are to be provided for such resources efficiently and effectively. To address this need, OCLC in cooperation with the Library of Congress, has taken a new approach, called FAST (Faceted Application of Subject Terminology). FAST headings are based on the existing vocabulary in Library of Congress Subject Headings (LCSH), but are applied with a simpler syntax than required by Library of Congress application policies. Adapting the LCSH vocabulary in a simplified faceted syntax retains the rich vocabulary of LCSH while making it easier to understand, control, apply, and use.

0.0027091147 = product of:
  0.021672918 = sum of:
    0.021672918 = product of:
      0.043345835 = sum of:
        0.043345835 = weight(_text_:22 in 3734) [ClassicSimilarity], result of:
          0.043345835 = score(doc=3734,freq=2.0), product of:
            0.1400417 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039991006 = queryNorm
            0.30952093 = fieldWeight in 3734, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=3734)
      0.5 = coord(1/2)
  0.125 = coord(1/8)

Source

Searcher. 3(1995) no.8, S.18-22

0.0025493775 = product of:
  0.02039502 = sum of:
    0.02039502 = product of:
      0.04079004 = sum of:
        0.04079004 = weight(_text_:resources in 3966) [ClassicSimilarity], result of:
          0.04079004 = score(doc=3966,freq=6.0), product of:
            0.14598069 = queryWeight, product of:
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.039991006 = queryNorm
            0.2794208 = fieldWeight in 3966, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.650338 = idf(docFreq=3122, maxDocs=44218)
              0.03125 = fieldNorm(doc=3966)
      0.5 = coord(1/2)
  0.125 = coord(1/8)

Abstract

Organizing and providing access to the resources an the Internet has been a problem area in spite of the availability of sophisticated search engines and other Software tools. There have been several attempts to organize the resources an the WWW. Some of them have tried to use traditional library classification schemes such as the Library of Congress Classification, the Dewey Decimal Classification and others. However there is a need to assign proper subject headings to them and present them in a logical or hierarchical sequence to cater to the need for browsing. This paper attempts to describe an experimental system designed to organize and provide access to web documents using a faceted pre-coordinate indexing system based an the Deep Structure Indexing System (DSIS) derived from POPSI (Postulate based Permuted Subject Indexing) of Bhattacharyya, and the facet analysis and chain indexing System of Ranganathan. A prototype software system has been designed to create a database of records specifying Web documents according to the Dublin Core and input a faceted subject heading according to DSIS. Synonymous terms are added to the standard terms in the heading using appropriate symbols. Once the data are entered along with a description and URL of the Web document, the record is stored in the system. More than one faceted subject heading can be assigned to a record depending an the content of the original document. The system stores the surrogates and keeps the faceted subject headings separately after establishing a link. Search is carried out an index entries derived from the faceted subject heading using chain indexing technique. If a single term is input, the system searches for its presence in the faceted subject headings and displays the subject headings in a sorted sequence reflecting an organizing sequence. If the number of retrieved headings is too large (running into more than a page) then the user has the option of entering another search term to be searched in combination. The system searches subject headings already retrieved and look for those containing the second term. The retrieved faceted subject headings can be displayed and browsed. When the relevant subject heading is selected the system displays the records with their URLs. Using the URL the original document an the web can be accessed. The prototype system developed under Windows NT environment using ASP and web server is under rigorous testing. The database and indexes management routines need further development.