Search (35 results, page 2 of 2)

2.9856144E-4 = product of:
  0.0053741056 = sum of:
    0.0053741056 = weight(_text_:in in 3815) [ClassicSimilarity], result of:
      0.0053741056 = score(doc=3815,freq=8.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.18034597 = fieldWeight in 3815, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=3815)
  0.055555556 = coord(1/18)

Abstract

To determine the potential benefits of providing classified displays of search results, we analyzed the classification features of the OCLC NetFirst database using criteria developed by the Subject Analysis Committee (SAC) subcommittee an Metadata and Classification. We also studied NetFirst search logs to better understand how the classification-based searching and limiting functions implemented in the system are being used. Our findings suggest that to increase the use of classification-based features in systems for general users, classificatory functions must be well integrated with the basic search and display functions.

Source

Subject retrieval in a networked environment: Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC. Ed.: I.C. McIlwaine

2.781682E-4 = product of:
  0.0050070276 = sum of:
    0.0050070276 = weight(_text_:in in 1781) [ClassicSimilarity], result of:
      0.0050070276 = score(doc=1781,freq=10.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.16802745 = fieldWeight in 1781, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1781)
  0.055555556 = coord(1/18)

Abstract

Recognition, by libraries, of the need for improved efficiency and reliability in subject authority control in catalogues led to a study of the feasibility of automatically creating a subject heading validation file by scanning the OLUC. The premises were: that although the file would not be axhaustive, it would contain the majority of frequently used headings; and that the predicted level of accurary in the file would be high. A sample file of Library of Congress assigned subject headings, from the OCLC Subject Headings Corrections database was analyzed. Results showed that: the frequency of use varies inversely with the number of headings at a given rrate of use; a small number of headings with high frequencies of use accounts for the majority of total use, while a large proportion shows very low frequency of use; topical headings account for 2/3 of assigned headings; and error and obsolescence rates are both low and are in inverse relationship to the frequency of heading use. Concludes that an automatically generated subject heading validation file is feasible and could serve various purposes, including: verification of subject heading strings constructed by cataloguers; updating of subject headings in catalogue maintenance; and validation of subject headings during retrospective catalogue conversion

2.585618E-4 = product of:
  0.0046541123 = sum of:
    0.0046541123 = weight(_text_:in in 386) [ClassicSimilarity], result of:
      0.0046541123 = score(doc=386,freq=6.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.1561842 = fieldWeight in 386, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=386)
  0.055555556 = coord(1/18)

Abstract

Using subject headings for Online Retrieval is an indispensable tool for online system desingners who are developing new systems or refining exicting ones. The book describes subject analysis and subject searching in online catalogs, including the limitations of retrieval, and demonstrates how such limitations can be overcome through system design and programming. The book describes the Library of Congress Subject headings system and system characteristics, shows how information is stored in machine readable files, and offers examples of and recommendations for successful methods. Tables are included to support these recommendations, and diagrams, graphs, and bar charts are used to provide results of data analyses.

Footnote

Rez. in: Information processing and management 31(1995) no.3, S.450-451 (R.R. Larson); Library resources and technical services 41(1997) no.1, S.60-67 (B.H. Weinberg)

2.585618E-4 = product of:
  0.0046541123 = sum of:
    0.0046541123 = weight(_text_:in in 1798) [ClassicSimilarity], result of:
      0.0046541123 = score(doc=1798,freq=6.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.1561842 = fieldWeight in 1798, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=1798)
  0.055555556 = coord(1/18)

Abstract

This paper reports on an investigation to use Faceted Application of Subject Terminology (FAST) as a surrogate for tags in WorldCat, a global catalog of bibliographic records and location information for books, videos, music, and other types of materials found in libraries. FAST is a controlled vocabulary based on the Library of Congress Subject Headings (LCSH). FAST is applied to a copy of WorldCat to explore the potential of generating tag-like information for bibliographic records. The paper provides sample visualizations of FAST headings inspired by social tagging applications. FAST Headings as Tags for WorldCat - ResearchGate. Available from: http://www.researchgate.net/publication/253384658_FAST_Headings_as_Tags_for_WorldCat [accessed Apr 24, 2015].

Source

Subject access: preparing for the future. Conference on August 20 - 21, 2009 in Florence, the IFLA Classification and Indexing Section sponsored an IFLA satellite conference entitled "Looking at the Past and Preparing for the Future". Eds.: P. Landry et al

2.488012E-4 = product of:
  0.0044784215 = sum of:
    0.0044784215 = weight(_text_:in in 1448) [ClassicSimilarity], result of:
      0.0044784215 = score(doc=1448,freq=2.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.15028831 = fieldWeight in 1448, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.078125 = fieldNorm(doc=1448)
  0.055555556 = coord(1/18)

2.4630062E-4 = product of:
  0.004433411 = sum of:
    0.004433411 = weight(_text_:in in 2163) [ClassicSimilarity], result of:
      0.004433411 = score(doc=2163,freq=4.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.14877784 = fieldWeight in 2163, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2163)
  0.055555556 = coord(1/18)

Abstract

Substantial efforts to establish standards for encoding and accessing electronic resources have occured over the past 5 years. Reports the design of a Web based tool, Spectrum, to enable individuals without specialized knowledge of library cataloguing or markup to create records for describing and accessing networked electronic resources of various types. System users may create descriptions of electronic resources and view them as formatted USMARC bibliographic records; TEI headers and URCs. Because continued volatitlity in the definition of data element standards is anticipated, the Spectrum system is designed to allow maximum flexibility in the design of the input formats

2.4630062E-4 = product of:
  0.004433411 = sum of:
    0.004433411 = weight(_text_:in in 5183) [ClassicSimilarity], result of:
      0.004433411 = score(doc=5183,freq=4.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.14877784 = fieldWeight in 5183, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5183)
  0.055555556 = coord(1/18)

Abstract

Recent advances in automating library classification data are causing the makers and maintainers of DDC and LCC to seek enhancements to these schemes that will facilitate computer-assisted classifying and extend the usefulbess of library classification to electronic collections. To explore the kinds of improvements that are needed to ensure that classification remains a viable subject retrieval tool, DDC numbers applied to over 40.000 records for Internet-accessible resources were analyzed. This analysis is used as a springboard for recommendations for improvements to DDC and LCC

Series

Advances in knowledge organization; vol.5

2.4630062E-4 = product of:
  0.004433411 = sum of:
    0.004433411 = weight(_text_:in in 6109) [ClassicSimilarity], result of:
      0.004433411 = score(doc=6109,freq=4.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.14877784 = fieldWeight in 6109, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=6109)
  0.055555556 = coord(1/18)

Abstract

This article describes FAST, the Faceted Application of Subject Terminology, a project at OCLC to make Library of Congress Subject Headings easier to use in Dublin Core metadata by breaking out facets of space, time, and form. Work on FAST can be watched at its web site, http://www.miskatonic.org/library/, which has recent presentations and reports. It is interesting to see facets and Dublin Core combined, though both LCSH and FAST subject headings are beyond what most people making a small faceted classification would want or need.

2.1546817E-4 = product of:
  0.003878427 = sum of:
    0.003878427 = weight(_text_:in in 3816) [ClassicSimilarity], result of:
      0.003878427 = score(doc=3816,freq=6.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.1301535 = fieldWeight in 3816, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3816)
  0.055555556 = coord(1/18)

Abstract

The Library of Congress Subject Headings schema (LCSH) is by far the most commonly used and widely accepted subject vocabulary for general application. It is the de facto universal controlled vocabulary and has been a model for developing subject heading systems by many countries. However, LCSH's complex syntax and rules for constructing headings restrict its application by requiring highly skilled personnel and limit the effectiveness of automated authority control. Recent trends, driven to a large extent by the rapid growth of the Web, are forcing changes in bibliographic control systems to make them easier to use, understand, and apply, and subject headings are no exception. The purpose of adapting the LCSH with a simplified syntax to create FAST is to retain the very rich vocabulary of LCSH while making the schema easier to understand, control, apply, and use. The schema maintains upward compatibility with LCSH, and any valid set of LC subject headings can be converted to FAST headings.

Source

Subject retrieval in a networked environment: Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC. Ed.: I.C. McIlwaine

2.1111484E-4 = product of:
  0.003800067 = sum of:
    0.003800067 = weight(_text_:in in 86) [ClassicSimilarity], result of:
      0.003800067 = score(doc=86,freq=4.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.12752387 = fieldWeight in 86, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=86)
  0.055555556 = coord(1/18)

Series

Advances in knowledge organization; vol.7

Source

Dynamism and stability in knowledge organization: Proceedings of the 6th International ISKO-Conference, 10-13 July 2000, Toronto, Canada. Ed.: C. Beghtol et al

1.9904094E-4 = product of:
  0.003582737 = sum of:
    0.003582737 = weight(_text_:in in 2115) [ClassicSimilarity], result of:
      0.003582737 = score(doc=2115,freq=2.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.120230645 = fieldWeight in 2115, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0625 = fieldNorm(doc=2115)
  0.055555556 = coord(1/18)

Abstract

Access to the machine-readable DDC (DDC-mr) spurred researchers in the OCLC Office of Research to undertake a project to tranform DDC-mr into an online classifier's tool. Previous use of the machine-readable DDC has been limited to online editorial support, production of the printed DDC, and select research projects

1.9904094E-4 = product of:
  0.003582737 = sum of:
    0.003582737 = weight(_text_:in in 6529) [ClassicSimilarity], result of:
      0.003582737 = score(doc=6529,freq=2.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.120230645 = fieldWeight in 6529, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0625 = fieldNorm(doc=6529)
  0.055555556 = coord(1/18)

Abstract

Reports on 2 distinct OCLC research projects under the rubric of cataloguing productivity tools: Electronic Dewey for Windows and Computer Generated Subject Authority Records. A new Windows version of Electronic Dewey is described, which includes features designed to extend the system's usefulness. In a separate effort, OCLC staff investigated the automated creation of subject authority records for the Library of Congress

1.7416083E-4 = product of:
  0.0031348949 = sum of:
    0.0031348949 = weight(_text_:in in 1160) [ClassicSimilarity], result of:
      0.0031348949 = score(doc=1160,freq=2.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.10520181 = fieldWeight in 1160, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1160)
  0.055555556 = coord(1/18)

Abstract

Two measures are examined that characterize the dispersion of a classification system when mapped to a second classification. One, a distance measure, captures the physical spread of a class when represented in the secon system; the second, from rank-frequency-analysis, characterizes the scatter of tokens over a set of types. The measures are tested by applying them to the library science portions of the LCC and the DDC using a database drawn from MARC records. Class mappings are presented that exemplify four extreme points of the two measures considered together: mappings where both measures score high, mappings where both score low, and mappings where one measure is high and the other is low. The conclusion is that the measures characterize two different properties of dispersion

1.4928072E-4 = product of:
  0.0026870528 = sum of:
    0.0026870528 = weight(_text_:in in 3679) [ClassicSimilarity], result of:
      0.0026870528 = score(doc=3679,freq=2.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.09017298 = fieldWeight in 3679, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=3679)
  0.055555556 = coord(1/18)

Abstract

Subject queries were extracted from 3 universities' online catalogues and analysed to determine the extend to which they matched subject headings in the LCSH. Computer analyses show that nearly 25% of the subject queries entered by online catalogue users are exact matches of LCSH. Yet, manual analyses show that, even though a user matches or closely matches LCSH-mr, the citations retrieved by this vocabulary are not necessarily satisfactory. Sometimes the closest LCSH-mr is not at all pertinent to a user's topic of interest. This study presents reasons why close matches of LCSH-mr are not always satisfactory and suggests approaches to finding the best matches of the catalogue's controlled vocabulary

1.4928072E-4 = product of:
  0.0026870528 = sum of:
    0.0026870528 = weight(_text_:in in 918) [ClassicSimilarity], result of:
      0.0026870528 = score(doc=918,freq=2.0), product of:
        0.029798867 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.021906832 = queryNorm
        0.09017298 = fieldWeight in 918, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=918)
  0.055555556 = coord(1/18)

Abstract

The paper describes a project to add value to controlled vocabularies by making inter-vocabulary associations. A methodology for mapping terms from one vocabulary to another is presented in the form of a case study applying the approach to the Educational Resources Information Center (ERIC) Thesaurus and the Library of Congress Subject Headings (LCSH). Our approach to mapping involves encoding vocabularies according to Machine-Readable Cataloging (MARC) standards, machine matching of vocabulary terms, and categorizing candidate mappings by likelihood of valid mapping. Mapping data is then stored as machine links. Vocabularies with associations to other schemes will be a key component of Web-based terminology services. The paper briefly describes how the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is used to provide access to a vocabulary with mappings.