Search (149 results, page 1 of 8)

0.01470651 = product of:
  0.07353255 = sum of:
    0.00910727 = product of:
      0.01821454 = sum of:
        0.01821454 = weight(_text_:online in 3966) [ClassicSimilarity], result of:
          0.01821454 = score(doc=3966,freq=4.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.18968134 = fieldWeight in 3966, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.03125 = fieldNorm(doc=3966)
      0.5 = coord(1/2)
    0.031123376 = weight(_text_:software in 3966) [ClassicSimilarity], result of:
      0.031123376 = score(doc=3966,freq=4.0), product of:
        0.12552431 = queryWeight, product of:
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.031640913 = queryNorm
        0.24794699 = fieldWeight in 3966, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.03125 = fieldNorm(doc=3966)
    0.033301905 = weight(_text_:web in 3966) [ClassicSimilarity], result of:
      0.033301905 = score(doc=3966,freq=10.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.32250395 = fieldWeight in 3966, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03125 = fieldNorm(doc=3966)
  0.2 = coord(3/15)

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.

Theme

Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval

0.014412055 = product of:
  0.07206027 = sum of:
    0.007968862 = product of:
      0.015937723 = sum of:
        0.015937723 = weight(_text_:online in 97) [ClassicSimilarity], result of:
          0.015937723 = score(doc=97,freq=4.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.16597117 = fieldWeight in 97, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.02734375 = fieldNorm(doc=97)
      0.5 = coord(1/2)
    0.027232954 = weight(_text_:software in 97) [ClassicSimilarity], result of:
      0.027232954 = score(doc=97,freq=4.0), product of:
        0.12552431 = queryWeight, product of:
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.031640913 = queryNorm
        0.21695362 = fieldWeight in 97, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.02734375 = fieldNorm(doc=97)
    0.036858454 = weight(_text_:web in 97) [ClassicSimilarity], result of:
      0.036858454 = score(doc=97,freq=16.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.35694647 = fieldWeight in 97, product of:
          4.0 = tf(freq=16.0), with freq of:
            16.0 = termFreq=16.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.02734375 = fieldNorm(doc=97)
  0.2 = coord(3/15)

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 World Wide Web. 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 to 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 the 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. The search is carried out an index entries derived from the faceted subject heading using the 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 Keadings is too large (running into more than a page) the user has the option of entering another search term to be searched in combination. The System searches subject headings already retrieved and looks 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 in a Windows NT environment using ASP and a web server is under rigorous testing. The database and Index management routines need further development.
An interesting but somewhat confusing article telling how the writers described web pages with Dublin Core metadata, including a faceted classification, and built a system that lets users browse the collection through the facets. They seem to want to cover too much in a short article, and unnecessary space is given over to screen shots showing how Dublin Core metadata was entered. The screen shots of the resulting browsable system are, unfortunately, not as enlightening as one would hope, and there is no discussion of how the system was actually written or the technology behind it. Still, it could be worth reading as an example of such a system and how it is treated in journals.

Footnote

Vgl. auch: Devadason, F.J.: Facet analysis and Semantic Web: musings of a student of Ranganathan. Unter: http://www.geocities.com/devadason.geo/FASEMWEB.html#FacetedIndex.

Theme

Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval

0.012417759 = product of:
  0.09313319 = sum of:
    0.019319436 = product of:
      0.03863887 = sum of:
        0.03863887 = weight(_text_:online in 5277) [ClassicSimilarity], result of:
          0.03863887 = score(doc=5277,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.40237486 = fieldWeight in 5277, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.09375 = fieldNorm(doc=5277)
      0.5 = coord(1/2)
    0.07381375 = weight(_text_:evaluation in 5277) [ClassicSimilarity], result of:
      0.07381375 = score(doc=5277,freq=2.0), product of:
        0.13272417 = queryWeight, product of:
          4.1947007 = idf(docFreq=1811, maxDocs=44218)
          0.031640913 = queryNorm
        0.556144 = fieldWeight in 5277, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1947007 = idf(docFreq=1811, maxDocs=44218)
          0.09375 = fieldNorm(doc=5277)
  0.13333334 = coord(2/15)

Theme

Verbale Doksprachen im Online-Retrieval

0.010792326 = product of:
  0.16188489 = sum of:
    0.16188489 = sum of:
      0.03863887 = weight(_text_:online in 4690) [ClassicSimilarity], result of:
        0.03863887 = score(doc=4690,freq=2.0), product of:
          0.096027054 = queryWeight, product of:
            3.0349014 = idf(docFreq=5778, maxDocs=44218)
            0.031640913 = queryNorm
          0.40237486 = fieldWeight in 4690, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.0349014 = idf(docFreq=5778, maxDocs=44218)
            0.09375 = fieldNorm(doc=4690)
      0.123246014 = weight(_text_:recherche in 4690) [ClassicSimilarity], result of:
        0.123246014 = score(doc=4690,freq=2.0), product of:
          0.17150146 = queryWeight, product of:
            5.4202437 = idf(docFreq=531, maxDocs=44218)
            0.031640913 = queryNorm
          0.71862954 = fieldWeight in 4690, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.4202437 = idf(docFreq=531, maxDocs=44218)
            0.09375 = fieldNorm(doc=4690)
  0.06666667 = coord(1/15)

Theme

Verbale Doksprachen im Online-Retrieval

0.008993605 = product of:
  0.13490407 = sum of:
    0.13490407 = sum of:
      0.03219906 = weight(_text_:online in 168) [ClassicSimilarity], result of:
        0.03219906 = score(doc=168,freq=2.0), product of:
          0.096027054 = queryWeight, product of:
            3.0349014 = idf(docFreq=5778, maxDocs=44218)
            0.031640913 = queryNorm
          0.33531237 = fieldWeight in 168, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.0349014 = idf(docFreq=5778, maxDocs=44218)
            0.078125 = fieldNorm(doc=168)
      0.10270501 = weight(_text_:recherche in 168) [ClassicSimilarity], result of:
        0.10270501 = score(doc=168,freq=2.0), product of:
          0.17150146 = queryWeight, product of:
            5.4202437 = idf(docFreq=531, maxDocs=44218)
            0.031640913 = queryNorm
          0.59885794 = fieldWeight in 168, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.4202437 = idf(docFreq=531, maxDocs=44218)
            0.078125 = fieldNorm(doc=168)
  0.06666667 = coord(1/15)

Theme

Verbale Doksprachen im Online-Retrieval

0.0087806815 = product of:
  0.06585511 = sum of:
    0.013660905 = product of:
      0.02732181 = sum of:
        0.02732181 = weight(_text_:online in 2323) [ClassicSimilarity], result of:
          0.02732181 = score(doc=2323,freq=4.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.284522 = fieldWeight in 2323, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.046875 = fieldNorm(doc=2323)
      0.5 = coord(1/2)
    0.052194204 = weight(_text_:evaluation in 2323) [ClassicSimilarity], result of:
      0.052194204 = score(doc=2323,freq=4.0), product of:
        0.13272417 = queryWeight, product of:
          4.1947007 = idf(docFreq=1811, maxDocs=44218)
          0.031640913 = queryNorm
        0.3932532 = fieldWeight in 2323, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.1947007 = idf(docFreq=1811, maxDocs=44218)
          0.046875 = fieldNorm(doc=2323)
  0.13333334 = coord(2/15)

Abstract

Partial coordination is a new method for cataloging documents for subject access. It is especially designed to enhance the precision of document searches in online environments. This article reports a preliminary evaluation of partial coordination that shows promising results compared with full-text retrieval. We also report the difficulties in empirically evaluating the effectiveness of automatic full-text retrieval in contrast to mixed methods such as partial coordination which combine human cataloging with computerized retrieval. Based on our study, we propose research in this area will substantially benefit from a common framework for failure analysis and a common data set. This will allow information retrieval researchers adapting 'library style'cataloging to large electronic document collections, as well as those developing automated or mixed methods, to directly compare their proposals for indexing and retrieval. This article concludes by suggesting guidelines for constructing such as testbed

Theme

Verbale Doksprachen im Online-Retrieval

0.008481836 = product of:
  0.063613765 = sum of:
    0.013660905 = product of:
      0.02732181 = sum of:
        0.02732181 = weight(_text_:online in 5698) [ClassicSimilarity], result of:
          0.02732181 = score(doc=5698,freq=4.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.284522 = fieldWeight in 5698, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.046875 = fieldNorm(doc=5698)
      0.5 = coord(1/2)
    0.049952857 = weight(_text_:web in 5698) [ClassicSimilarity], result of:
      0.049952857 = score(doc=5698,freq=10.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.48375595 = fieldWeight in 5698, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=5698)
  0.13333334 = coord(2/15)

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

Theme

Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval

0.0075859637 = product of:
  0.056894723 = sum of:
    0.012879624 = product of:
      0.025759248 = sum of:
        0.025759248 = weight(_text_:online in 5072) [ClassicSimilarity], result of:
          0.025759248 = score(doc=5072,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.2682499 = fieldWeight in 5072, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.0625 = fieldNorm(doc=5072)
      0.5 = coord(1/2)
    0.0440151 = weight(_text_:software in 5072) [ClassicSimilarity], result of:
      0.0440151 = score(doc=5072,freq=2.0), product of:
        0.12552431 = queryWeight, product of:
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.031640913 = queryNorm
        0.35064998 = fieldWeight in 5072, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.0625 = fieldNorm(doc=5072)
  0.13333334 = coord(2/15)

Abstract

Comments on the relative rarity of research articles on theoretical aspects of subject indexing in computerised retrieval systems and the predominance of articles on software packages and hardware. Concludes that controlled indexing still has a future but points to major differences from the past

Theme

Verbale Doksprachen im Online-Retrieval

0.006823369 = product of:
  0.051175263 = sum of:
    0.013942603 = product of:
      0.027885206 = sum of:
        0.027885206 = weight(_text_:online in 2549) [ClassicSimilarity], result of:
          0.027885206 = score(doc=2549,freq=6.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.29038906 = fieldWeight in 2549, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2549)
      0.5 = coord(1/2)
    0.03723266 = weight(_text_:web in 2549) [ClassicSimilarity], result of:
      0.03723266 = score(doc=2549,freq=8.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.36057037 = fieldWeight in 2549, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2549)
  0.13333334 = coord(2/15)

Abstract

Purpose - This paper aims at providing a robust, user-friendly and efficient navigation procedure in an online library catalog that is based on semantic information encapsulated within subject headings. Design/methodology/approach - The paper describes an interactive navigation procedure inside an online library catalog based on semantic information. The proposed approach is presented through a web-based, prototype application following the most recent trends of the semantic web such as AJAX technology and the web ontology language - OWL for encoding semantics. Findings - According to the proposed method, a GUI interface exposes the hierarchy of the subject headings employed within an OPAC, as well as all stated relations between such headings, as links that the user can follow, effectively traversing the ontology and formulating at the same time the actual query to the underlying OPAC. This act of interactive navigation through the library's assets aids searchers in accurately formulating their queries, by offering broader or narrower concepts for selection or indicating alternative or related concepts they might be initially unaware of. The augmented exposition of inter-relations between concepts provides multiple paths for information retrieval and enables searchers to fulfill their information needs in a faster, more efficient and intuitive manner. Practical implications - The paper includes implications for the development of modern, semantic web applications focused on the library domain. The novel approach of visualizing subject headings could be further extended to visualize a number of other conceptualizations of the library domain. Originality/value - This paper fulfils an identified need to take advantage of the "hidden knowledge" existing within the library domain but, for a number of reasons, is never exposed to the library users.

Theme

Verbale Doksprachen im Online-Retrieval

0.0067298063 = product of:
  0.050473545 = sum of:
    0.019717818 = product of:
      0.039435636 = sum of:
        0.039435636 = weight(_text_:online in 4307) [ClassicSimilarity], result of:
          0.039435636 = score(doc=4307,freq=12.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.41067213 = fieldWeight in 4307, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4307)
      0.5 = coord(1/2)
    0.030755727 = weight(_text_:evaluation in 4307) [ClassicSimilarity], result of:
      0.030755727 = score(doc=4307,freq=2.0), product of:
        0.13272417 = queryWeight, product of:
          4.1947007 = idf(docFreq=1811, maxDocs=44218)
          0.031640913 = queryNorm
        0.23172665 = fieldWeight in 4307, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1947007 = idf(docFreq=1811, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4307)
  0.13333334 = coord(2/15)

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.

Theme

Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval

0.006727322 = product of:
  0.05045491 = sum of:
    0.006439812 = product of:
      0.012879624 = sum of:
        0.012879624 = weight(_text_:online in 1545) [ClassicSimilarity], result of:
          0.012879624 = score(doc=1545,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.13412495 = fieldWeight in 1545, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.03125 = fieldNorm(doc=1545)
      0.5 = coord(1/2)
    0.0440151 = weight(_text_:software in 1545) [ClassicSimilarity], result of:
      0.0440151 = score(doc=1545,freq=8.0), product of:
        0.12552431 = queryWeight, product of:
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.031640913 = queryNorm
        0.35064998 = fieldWeight in 1545, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.03125 = fieldNorm(doc=1545)
  0.13333334 = coord(2/15)

Classification

ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
ST 270 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme

RVK

ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
ST 270 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme

Theme

Verbale Doksprachen im Online-Retrieval

0.0066377176 = product of:
  0.04978288 = sum of:
    0.011269671 = product of:
      0.022539342 = sum of:
        0.022539342 = weight(_text_:online in 1050) [ClassicSimilarity], result of:
          0.022539342 = score(doc=1050,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.23471867 = fieldWeight in 1050, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1050)
      0.5 = coord(1/2)
    0.03851321 = weight(_text_:software in 1050) [ClassicSimilarity], result of:
      0.03851321 = score(doc=1050,freq=2.0), product of:
        0.12552431 = queryWeight, product of:
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.031640913 = queryNorm
        0.30681872 = fieldWeight in 1050, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.9671519 = idf(docFreq=2274, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1050)
  0.13333334 = coord(2/15)

Content

Enthält die Beiträge: SOMMERVILLE, I., M. WOOD: A software components catalogue; COELHO, H.: Library manager: a case study in knowledge engineering; DAVIES, R.: Cataloguing as a domain for an expert system; POLLITT, A.S.: A rule-base system as an intermediary for searching cancer therapy literature on MEDLINE; LEBOWITZ, M.: An experiment in intelligent information systems: RESEARCHER; VICKERY, A., H.M. BROOKS u. B.C. VICKERY: An expert system for referral: the PLEXUS project; RICH, E.: Users are individuals: individualizing user models; INGWERSEN, P.: Cognitive analysis and the role of the intermediary in information retrieval; SHAW, M.L.G. u. B.R. GAINES: A cognitive model for intelligent information systems; DAVIES, R.: Classification and ratiocination: a perennial quest

Theme

Verbale Doksprachen im Online-Retrieval

0.004714956 = product of:
  0.03536217 = sum of:
    0.01821454 = product of:
      0.03642908 = sum of:
        0.03642908 = weight(_text_:online in 3734) [ClassicSimilarity], result of:
          0.03642908 = score(doc=3734,freq=4.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.37936267 = fieldWeight in 3734, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.0625 = fieldNorm(doc=3734)
      0.5 = coord(1/2)
    0.017147627 = product of:
      0.034295253 = sum of:
        0.034295253 = weight(_text_:22 in 3734) [ClassicSimilarity], result of:
          0.034295253 = score(doc=3734,freq=2.0), product of:
            0.110801086 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.031640913 = 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)
  0.13333334 = coord(2/15)

Abstract

Most indexed databases now include their thesauri and/or coding in their bibliographic files, searchable at the databases' online connect rates. Assesses the searchability of these on the different hosts. Thesauri and classifications are also available as diskette or CD-ROM products. Describes a number of these, highlighting the diskette thesaurus from IFI/Plenum Data for its flexible databases, the CLAIMS Uniterm and Comprehensive indexes to US chemical patents

Source

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

Theme

Verbale Doksprachen im Online-Retrieval

0.0045947344 = product of:
  0.034460507 = sum of:
    0.021599788 = product of:
      0.043199576 = sum of:
        0.043199576 = weight(_text_:online in 131) [ClassicSimilarity], result of:
          0.043199576 = score(doc=131,freq=10.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.4498688 = fieldWeight in 131, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.046875 = fieldNorm(doc=131)
      0.5 = coord(1/2)
    0.01286072 = product of:
      0.02572144 = sum of:
        0.02572144 = weight(_text_:22 in 131) [ClassicSimilarity], result of:
          0.02572144 = score(doc=131,freq=2.0), product of:
            0.110801086 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.031640913 = 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)
      0.5 = coord(1/2)
  0.13333334 = coord(2/15)

Abstract

After a fundamental examination of the phenomenon of time, this paper presents the history, authority, and structure of period subdivisions and chronological terms in the three subject heading languages LCSH (Library of Congress Subject Headings), RAMEAU (Répertoire d'Autorité Matière Encyclopédique et Alphabétique Unifié), and RSWK (Regeln für den Schlagwortkatalog). Their usefulness in online searching is demonstrated using the online catalogs of the Library of Congress, the Bibliothèque nationale de France, and the Deutsche Bibliothek and is compared to the search options in selected digital encyclopedias (Encyclopaedia Britannica, Encarta, Brockhaus-Enzyklopädie). The author develops a model for common time retrieval across all three online catalogs, outlines the conditions for that model (time period code, chronological code, and chronology authority file), and proposes a search interface.

Date

10. 9.2000 17:38:22

Theme

Verbale Doksprachen im Online-Retrieval

0.004266575 = product of:
  0.031999312 = sum of:
    0.009659718 = product of:
      0.019319436 = sum of:
        0.019319436 = weight(_text_:online in 5682) [ClassicSimilarity], result of:
          0.019319436 = score(doc=5682,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.20118743 = fieldWeight in 5682, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.046875 = fieldNorm(doc=5682)
      0.5 = coord(1/2)
    0.022339594 = weight(_text_:web in 5682) [ClassicSimilarity], result of:
      0.022339594 = score(doc=5682,freq=2.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.21634221 = fieldWeight in 5682, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=5682)
  0.13333334 = coord(2/15)

Abstract

The Library of Congress Subject Headings schema (LCSH) is 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 (Faceted Application of Subject Terminology) headings is to retain the very rich vocabulary of LCSH while making the schema easier to understand, control, apply, and use. The schema maintains compatibility with LCSH--any valid Library of Congress subject heading can be converted to FAST headings.

Theme

Verbale Doksprachen im Online-Retrieval

0.004266575 = product of:
  0.031999312 = sum of:
    0.009659718 = product of:
      0.019319436 = sum of:
        0.019319436 = weight(_text_:online in 310) [ClassicSimilarity], result of:
          0.019319436 = score(doc=310,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.20118743 = fieldWeight in 310, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.046875 = fieldNorm(doc=310)
      0.5 = coord(1/2)
    0.022339594 = weight(_text_:web in 310) [ClassicSimilarity], result of:
      0.022339594 = score(doc=310,freq=2.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.21634221 = fieldWeight in 310, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=310)
  0.13333334 = coord(2/15)

Source

Beyond libraries - subject metadata in the digital environment and semantic web. IFLA Satellite Post-Conference, 17-18 August 2012, Tallinn

Theme

Verbale Doksprachen im Online-Retrieval

0.004266575 = product of:
  0.031999312 = sum of:
    0.009659718 = product of:
      0.019319436 = sum of:
        0.019319436 = weight(_text_:online in 1886) [ClassicSimilarity], result of:
          0.019319436 = score(doc=1886,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.20118743 = fieldWeight in 1886, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.046875 = fieldNorm(doc=1886)
      0.5 = coord(1/2)
    0.022339594 = weight(_text_:web in 1886) [ClassicSimilarity], result of:
      0.022339594 = score(doc=1886,freq=2.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.21634221 = fieldWeight in 1886, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.046875 = fieldNorm(doc=1886)
  0.13333334 = coord(2/15)

Abstract

This article presents an Italian experience of developing streamlined semantic interoperability between the Italian Thesaurus of Nuovo soggettario and the Library of Congress Subject Headings (LCSH). This ongoing project must take into consideration the differences between the two indexing tools, while the criteria on which the resulting actions are based are being clarified continually. Reciprocal interoperability, thanks to the Simple Knowledge Organization System format, enables us to create links with English language subject headings. The National Central Library of Florence is studying methods of automatically catching LCSH equivalents and the question of how to take advantage of both Semantic Web outputs and the multilingual dataset of Wikidata.

Theme

Verbale Doksprachen im Online-Retrieval

0.0036685413 = product of:
  0.02751406 = sum of:
    0.016904507 = product of:
      0.033809014 = sum of:
        0.033809014 = weight(_text_:online in 4360) [ClassicSimilarity], result of:
          0.033809014 = score(doc=4360,freq=18.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.35207802 = fieldWeight in 4360, product of:
              4.2426405 = tf(freq=18.0), with freq of:
                18.0 = termFreq=18.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.02734375 = fieldNorm(doc=4360)
      0.5 = coord(1/2)
    0.010609553 = product of:
      0.021219106 = sum of:
        0.021219106 = weight(_text_:22 in 4360) [ClassicSimilarity], result of:
          0.021219106 = score(doc=4360,freq=4.0), product of:
            0.110801086 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.031640913 = queryNorm
            0.19150631 = fieldWeight in 4360, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.02734375 = fieldNorm(doc=4360)
      0.5 = coord(1/2)
  0.13333334 = coord(2/15)

Abstract

Es werden die Grundprobleme der Sacherschließung in Online-Katalogen dargestellt. Ein anschließendes Kapitel behandelt das Verhältnis von verbaler und klassifikatorischer Erschließung. Ein wichtiger Teil der Aussagen betrifft das Gebiet der verbalen Sacherschließung und damit das nationale Regelwerk: Es werden Vorschläge für eine Reform der RSWK im Hinblick auf die Erfordernisse der OPAC unterbreitet. Regelwerk und Normdatei (SWD) bilden dabei eine Einheit und werden zusammen betrachtet. Im vergangenen Jahr wurden die Ergebnisse der Expertengruppe mit dem Schwerpunkt Formalerschließung vorgelegt, nun folgen die Aussagen zur Sacherschließung, welche die Expertengruppe - in veränderter personeller Zusammensetzung unter Leitung von Dr. Friedrich Geißelmann, Regensburg - erarbeitet hat. Die bibliothekarische Öffentlichkeit ist aufgefordert, sich dazu bis zum Jahresende zu äußern. Beide Berichte beziehen sich aufeinander und versuchen, den Zusammenhang zwischen Formal- und Sacherschließung herzustellen. Vom gegenwärtigen Stand der Sacherschließung in deutschen Bibliotheken ausgehend - wozu auch durch die Gruppe im Frühjahr 1993 eine Umfrage in wissenschaftlichen und Öffentlichen Bibliotheken gemacht worden ist, werden die Grundprobleme der Sacherschließung in Online-Katalogen dargestellt. Ein anschließendes Kapitel behandelt das Verhältnis von verbaler und klassifikatorischer Erschließung. Ein wichtiger Teil der Aussagen betrifft das Gebiet der verbalen Sacherschließung und damit das nationale Regelwerk: Es werden Vorschläge für ein Reform der RSWK im Hinblick auf die Erfordernisse des OPAC unterbreitet. Regelwerk und Normdatei (SWD) bilden dabei eine Einheit und werden zusammen betrachtet. Es geht um Kettenbildung und Permutationsregeln, Kompositumbildung oder Zerlegung von Begriffen, Pleonasmus, Funktion der SWD, Ansetzung von Schlagwörtern, die Einführung eines Zeit-Codes, Erschließung literarischer Formen und Gattungen, den verwendeten Zeichensatz, den Umgang mit Verweisungen

Date

15. 7.2018 16:22:16

Editor

Kommission des DBI für Erschließung und Katalogmanagement / Expertengruppe Online-Kataloge

Footnote

Rez. in: Mitteilungen VÖB 48(1995) H.1, S.66-68 (K. Niedermair) - Vgl. auch Lepsky, K. in: Bibliotheksdienst 29(1995) H.3, S.500-519; Bibliothek: Forschung u. Praxis 19(1995) H.2, S.251-254 (G. Hartwieg; auch in: LDV-Forum Bd. 12, Nr. 2, Jg. 1995, S.22-29 [unter: http://www.jlcl.org/1995_Heft2/Rezensionen_19-27.pdf]) .

LCSH

Online library catalogs / Subject access

RSWK

Deutschland / Online-Katalog / Inhaltserschließung

Subject

Deutschland / Online-Katalog / Inhaltserschließung
Online library catalogs / Subject access

Theme

Verbale Doksprachen im Online-Retrieval

0.0035554792 = product of:
  0.026666094 = sum of:
    0.008049765 = product of:
      0.01609953 = sum of:
        0.01609953 = weight(_text_:online in 96) [ClassicSimilarity], result of:
          0.01609953 = score(doc=96,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.16765618 = fieldWeight in 96, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.0390625 = fieldNorm(doc=96)
      0.5 = coord(1/2)
    0.01861633 = weight(_text_:web in 96) [ClassicSimilarity], result of:
      0.01861633 = score(doc=96,freq=2.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.18028519 = fieldWeight in 96, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=96)
  0.13333334 = coord(2/15)

Abstract

The paper looks at ways in which traditional classification and indexing tools have dealt with the relationships between constituent terms; variations in these are examined and compared with the methods used in machine searching, particularly of the Internet and World Wide Web. Apparent correspondences with features of index languages are identified, and further methods of applying classification and indexing theory to machine retrieval are proposed. There are various ways in which indexing and retrieval systems, both conventional and electronic, deal with the problem of searching for documents on a subject basis, and various approaches to the analysis and processing of a query. There appear to be three basic models; the taxonomic or structural system, in which the user is offered a map of the `universe of knowledge'; the language based system, which offers a vocabulary of the subject and a grammar for dealing with compound statements; and the mathematical model using the language of symbolic logic or the algebra of set theory

Theme

Verbale Doksprachen im Online-Retrieval

0.0035554792 = product of:
  0.026666094 = sum of:
    0.008049765 = product of:
      0.01609953 = sum of:
        0.01609953 = weight(_text_:online in 1970) [ClassicSimilarity], result of:
          0.01609953 = score(doc=1970,freq=2.0), product of:
            0.096027054 = queryWeight, product of:
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.031640913 = queryNorm
            0.16765618 = fieldWeight in 1970, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0349014 = idf(docFreq=5778, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1970)
      0.5 = coord(1/2)
    0.01861633 = weight(_text_:web in 1970) [ClassicSimilarity], result of:
      0.01861633 = score(doc=1970,freq=2.0), product of:
        0.10326045 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.031640913 = queryNorm
        0.18028519 = fieldWeight in 1970, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1970)
  0.13333334 = coord(2/15)

Footnote

Contribution in a special issue "Beyond libraries: Subject metadata in the digital environment and Semantic Web" - Enthält Beiträge der gleichnamigen IFLA Satellite Post-Conference, 17-18 August 2012, Tallinn.

Theme

Verbale Doksprachen im Online-Retrieval