Search (6 results, page 1 of 1)

0.012715118 = product of:
  0.025430236 = sum of:
    0.025430236 = product of:
      0.076290704 = sum of:
        0.076290704 = weight(_text_:objects in 2785) [ClassicSimilarity], result of:
          0.076290704 = score(doc=2785,freq=2.0), product of:
            0.3247862 = queryWeight, product of:
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.06110665 = queryNorm
            0.23489517 = fieldWeight in 2785, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.03125 = fieldNorm(doc=2785)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

"Big Data" is on the covers of Science, Nature, the Economist, and Wired magazines, on the front pages of the Wall Street Journal and the New York Times. But despite the media hyperbole, as Christine Borgman points out in this examination of data and scholarly research, having the right data is usually better than having more data; little data can be just as valuable as big data. In many cases, there are no data -- because relevant data don't exist, cannot be found, or are not available. Moreover, data sharing is difficult, incentives to do so are minimal, and data practices vary widely across disciplines. Borgman, an often-cited authority on scholarly communication, argues that data have no value or meaning in isolation; they exist within a knowledge infrastructure -- an ecology of people, practices, technologies, institutions, material objects, and relationships. After laying out the premises of her investigation -- six "provocations" meant to inspire discussion about the uses of data in scholarship -- Borgman offers case studies of data practices in the sciences, the social sciences, and the humanities, and then considers the implications of her findings for scholarly practice and research policy. To manage and exploit data over the long term, Borgman argues, requires massive investment in knowledge infrastructures; at stake is the future of scholarship.

0.011125728 = product of:
  0.022251455 = sum of:
    0.022251455 = product of:
      0.06675436 = sum of:
        0.06675436 = weight(_text_:objects in 1782) [ClassicSimilarity], result of:
          0.06675436 = score(doc=1782,freq=2.0), product of:
            0.3247862 = queryWeight, product of:
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.06110665 = queryNorm
            0.20553327 = fieldWeight in 1782, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.02734375 = fieldNorm(doc=1782)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

Logic and the Organization of Information closely examines the historical and contemporary methodologies used to catalogue information objects-books, ebooks, journals, articles, web pages, images, emails, podcasts and more-in the digital era. This book provides an in-depth technical background for digital librarianship, and covers a broad range of theoretical and practical topics including: classification theory, topic annotation, automatic clustering, generalized synonymy and concept indexing, distributed libraries, semantic web ontologies and Simple Knowledge Organization System (SKOS). It also analyzes the challenges facing today's information architects, and outlines a series of techniques for overcoming them. Logic and the Organization of Information is intended for practitioners and professionals working at a design level as a reference book for digital librarianship. Advanced-level students, researchers and academics studying information science, library science, digital libraries and computer science will also find this book invaluable.

0.0094187455 = product of:
  0.018837491 = sum of:
    0.018837491 = product of:
      0.037674982 = sum of:
        0.037674982 = weight(_text_:wissen in 1851) [ClassicSimilarity], result of:
          0.037674982 = score(doc=1851,freq=2.0), product of:
            0.26354674 = queryWeight, product of:
              4.3128977 = idf(docFreq=1609, maxDocs=44218)
              0.06110665 = queryNorm
            0.14295371 = fieldWeight in 1851, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.3128977 = idf(docFreq=1609, maxDocs=44218)
              0.0234375 = fieldNorm(doc=1851)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Content

Enthält die Kapitel: - Grundlagen der Informationswissenschaft Ziel der Buchreihe - Informationswissenschaft - Information und Wissen - Propädeutik des Information Retrieval Geschichte des Information Retrieval - Grundbegriffe des Information Retrieval - Relevanz und Pertinenz - Dokumente - Typologie von Retrievalsystemen - Architektur eines Retrievalsystems - Boolesche Retrievalsysteme Boolesches Retrieval - Informetrische Analysen - Erweitertes Boolesches Retrieval - Informationslinguistik - Natural Language Processing n-Gramme - Worte - Phrasen, Eigennamen, Komposita - Begriffe - Anaphora - Fehlertolerantes Retrieval - Klassische Retrievalmodelle Textstatistik - Vektorraummodell - Probabilistisches Modell - Web Information Retrieval Linktopologie - Strukturinformationen in Dokumenten - Nutzer und Nutzung - Themenentdeckung und -verfolgung - Spezialprobleme des Information Retrieval Soziale Netzwerke und "small worlds" - Kontrolliertes Vokabular - Sprachübergreifendes Retrieval - Anfragedialog - Retrieval von Textstellen - Bild- und Tonretrieval

0.008962397 = product of:
  0.017924795 = sum of:
    0.017924795 = product of:
      0.03584959 = sum of:
        0.03584959 = weight(_text_:22 in 150) [ClassicSimilarity], result of:
          0.03584959 = score(doc=150,freq=6.0), product of:
            0.21398507 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.06110665 = queryNorm
            0.16753313 = fieldWeight in 150, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.01953125 = fieldNorm(doc=150)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

006.7 22

Date

7. 3.2007 19:30:22

DDC

006.7 22

0.006357559 = product of:
  0.012715118 = sum of:
    0.012715118 = product of:
      0.038145352 = sum of:
        0.038145352 = weight(_text_:objects in 339) [ClassicSimilarity], result of:
          0.038145352 = score(doc=339,freq=2.0), product of:
            0.3247862 = queryWeight, product of:
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.06110665 = queryNorm
            0.117447585 = fieldWeight in 339, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.015625 = fieldNorm(doc=339)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Footnote

Rez. in: JASIST. 58(2007) no.6., S.909-910 (A.D. Petrou): "A division in metadata definitions for physical objects vs. those for digital resources offered in Chapter 1 is punctuated by the use of broader, more inclusive metadata definitions, such as data about data as well as with the inclusion of more specific metadata definitions intended for networked resources. Intertwined with the book's subject matter, which is to "distinguish traditional cataloguing from metadata activity" (5), the authors' chosen metadata definition is also detailed on page 5 as follows: Thus while granting the validity of the inclusive definition, we concentrate primarily on metadata as it is most commonly thought of both inside and outside of the library community, as "structured information used to find, access, use and manage information resources primarily in a digital environment." (International Encyclopedia of Information and Library Science, 2003) Metadata principles discussed by the authors include modularity, extensibility, refinement and multilingualism. The latter set is followed by seven misconceptions about metadata. Two types of metadata discussed are automatically generated indexes and manually created records. In terms of categories of metadata, the authors present three sets of them as follows: descriptive, structural, and administrative metadata. Chapter 2 focuses on metadata for communities of practice, and is a prelude to content in Chapter 3 where metadata applications, use, and development are presented from the perspective of libraries. Chapter 2 discusses the emergence and impact of metadata on organization and access of online resources from the perspective of communities for which such standards exist and for the need for mapping one standard to another. Discussion focuses on metalanguages, such as Standard Generalized Markup Language (SGML) and eXtensible Markup Language (XML), "capable of embedding descriptive elements within the document markup itself' (25). This discussion falls under syntactic interoperability. For semantic interoperability, HTML and other mark-up languages, such as Text Encoding Initiative (TEI) and Computer Interchange of Museum Information (CIMI), are covered. For structural interoperability, Dublin Core's 15 metadata elements are grouped into three areas: content (title, subject, description, type, source, relation, and coverage), intellectual property (creator, publisher, contributor and rights), and instantiation (date, format, identifier, and language) for discussion.

0.0062791635 = product of:
  0.012558327 = sum of:
    0.012558327 = product of:
      0.025116654 = sum of:
        0.025116654 = weight(_text_:wissen in 92) [ClassicSimilarity], result of:
          0.025116654 = score(doc=92,freq=2.0), product of:
            0.26354674 = queryWeight, product of:
              4.3128977 = idf(docFreq=1609, maxDocs=44218)
              0.06110665 = queryNorm
            0.09530247 = fieldWeight in 92, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.3128977 = idf(docFreq=1609, maxDocs=44218)
              0.015625 = fieldNorm(doc=92)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Footnote

Die Kapitel fünf bis neun widmen sich dann ausführlich dem Information Retrieval. Zuerst werden grundlegende Retrievaltechniken vorgestellt und ihre Vor- und Nachteile dargestellt. Aus der Sicht des Nutzers von IR-Systemen wird der Prozess des Bildens einer Suchanfrage diskutiert und die damit verbundenen Probleme aufgezeigt. Im sechsten Kapitel werden die Retrieval-Ansätze Suchen und Browsen gegenübergestellt, entsprechende Suchstrategien aufgezeigt und schließlich Ansätze diskutiert, die suchen und browsen zu integrieren versuchen. Das siebte Kapitel beschäftigt sich dann mit dem, was den Kern der meisten IRBücher ausmacht: den IR-Modellen. Diese werden kurz vorgestellt, auf Formeln wird weitgehend verzichtet. Dies ist jedoch durchaus als Vorteil zu sehen, denn gerade Studienanfängern bereitet das Verständnis der IR-Modelle aufgrund deren Komplexität oft Schwierigkeiten. Nach der Lektüre dieses Kapitels wird man zwar nicht im Detail über die verschiedenen Modelle Bescheid wissen, wird sie jedoch kennen und einordnen können.