Search (3 results, page 1 of 1)

0.019571725 = product of:
  0.058715172 = sum of:
    0.058715172 = weight(_text_:digitale in 4041) [ClassicSimilarity], result of:
      0.058715172 = score(doc=4041,freq=2.0), product of:
        0.25753787 = queryWeight, product of:
          5.158747 = idf(docFreq=690, maxDocs=44218)
          0.049922563 = queryNorm
        0.22798656 = fieldWeight in 4041, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.158747 = idf(docFreq=690, maxDocs=44218)
          0.03125 = fieldNorm(doc=4041)
  0.33333334 = coord(1/3)

Content

Inhalt: Boolean retrieval - The term vocabulary & postings lists - Dictionaries and tolerant retrieval - Index construction - Index compression - Scoring, term weighting & the vector space model - Computing scores in a complete search system - Evaluation in information retrieval - Relevance feedback & query expansion - XML retrieval - Probabilistic information retrieval - Language models for information retrieval - Text classification & Naive Bayes - Vector space classification - Support vector machines & machine learning on documents - Flat clustering - Hierarchical clustering - Matrix decompositions & latent semantic indexing - Web search basics - Web crawling and indexes - Link analysis Vgl. die digitale Fassung unter: http://nlp.stanford.edu/IR-book/pdf/irbookprint.pdf.

0.019571725 = product of:
  0.058715172 = sum of:
    0.058715172 = weight(_text_:digitale in 4203) [ClassicSimilarity], result of:
      0.058715172 = score(doc=4203,freq=2.0), product of:
        0.25753787 = queryWeight, product of:
          5.158747 = idf(docFreq=690, maxDocs=44218)
          0.049922563 = queryNorm
        0.22798656 = fieldWeight in 4203, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.158747 = idf(docFreq=690, maxDocs=44218)
          0.03125 = fieldNorm(doc=4203)
  0.33333334 = coord(1/3)

Abstract

Kollaborative Informationsdienste im Web 2.0 werden von den Internetnutzern nicht nur dazu genutzt, digitale Informationsressourcen zu produzieren, sondern auch, um sie inhaltlich mit eigenen Schlagworten, sog. Tags, zu erschließen. Dabei müssen die Nutzer nicht wie bei Bibliothekskatalogen auf Regeln achten. Die Menge an nutzergenerierten Tags innerhalb eines Kollaborativen Informationsdienstes wird als Folksonomy bezeichnet. Die Folksonomies dienen den Nutzern zum Wiederauffinden eigener Ressourcen und für die Recherche nach fremden Ressourcen. Das Buch beschäftigt sich mit Kollaborativen Informationsdiensten, Folksonomies als Methode der Wissensrepräsentation und als Werkzeug des Information Retrievals.

0.008765247 = product of:
  0.02629574 = sum of:
    0.02629574 = product of:
      0.05259148 = sum of:
        0.05259148 = weight(_text_:bibliothek in 4027) [ClassicSimilarity], result of:
          0.05259148 = score(doc=4027,freq=4.0), product of:
            0.20495859 = queryWeight, product of:
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.049922563 = queryNorm
            0.25659564 = fieldWeight in 4027, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.03125 = fieldNorm(doc=4027)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

RSWK

Elektronische Bibliothek

Subject

Elektronische Bibliothek