Search (2 results, page 1 of 1)

0.005088172 = product of:
  0.010176344 = sum of:
    0.010176344 = product of:
      0.020352688 = sum of:
        0.020352688 = weight(_text_:c in 641) [ClassicSimilarity], result of:
          0.020352688 = score(doc=641,freq=4.0), product of:
            0.15104888 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.043789834 = queryNorm
            0.1347424 = fieldWeight in 641, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.01953125 = fieldNorm(doc=641)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Content

Inhaltsverzeichnis 1. Einleitung 2. Bibliothekspolitik 3. Begriffsdefinitionen 3.1. Bibliothek - 3.2. Archiv - 3.3. Museum - 3.4. Information und Dokumentation - 3.5. Information - 3.6. Semantik und semantische Technologien - 3.7. Ontologie - 3.8. Recall und Precision 4. Bibliotheken aus statistischer Sicht - Kennzahlen 5. Bibliographische Tools 5.1. Austauschformate 5.1.1. MAB / MAB2 - 5.1.2. Allegro-C - 5.1.3. MARC 2 - 5.1.4. Z39.50 - 5.1.5. Weitere Formate 5.2. Kataloge / OPACs 5.2.1. Aleph 500 - 5.2.2. Allegro-C - 5.2.3. WorldCat beta 5.3. Dokumentationssysteme 5.4. Suchmaschinen 5.4.1. Convera und ProTerm - 5.4.2. APA Online Manager - 5.4.3. Google Scholar - 5.4.4. Scirus - 5.4.5. OAIster - 5.4.6. GRACE 5.5. Informationsportale 5.5.1. iPort - 5.5.2. MetaLib - 5.5.3. Vascoda - 5.5.4. Dandelon - 5.5.5. BAM-Portal - 5.5.6. Prometheus 6. Semantische Anreicherung 6.1. Indexierung - 6.2. Klassifikation - 6.3. Thesauri 38 - 6.4. Social Tagging 7. Projekte 7.1. Bibster - 7.2. Open Archives Initiative OAI - 7.3. Renardus - 7.4. Perseus Digital Library - 7.5. JeromeDL - eLibrary with Semantics 8. Semantische Technologien in BAM-InstitutionenÖsterreichs 8.1. Verbundkatalog des Österreichischen Bibliothekenverbunds - 8.2. Bibliotheken Online - WebOPAC der Öffentlichen Bibliotheken - 8.3. Umfrage-Design - 8.4. Auswertung 9. Fazit und Ausblick 10. Quellenverzeichnis 11. Web-Links 12. Anhang Vgl.: http://www.semantic-web.at/file_upload/1_tmpphp154oO0.pdf.

0.004363805 = product of:
  0.00872761 = sum of:
    0.00872761 = product of:
      0.05236566 = sum of:
        0.05236566 = weight(_text_:back in 6) [ClassicSimilarity], result of:
          0.05236566 = score(doc=6,freq=2.0), product of:
            0.26302487 = queryWeight, product of:
              6.006528 = idf(docFreq=295, maxDocs=44218)
              0.043789834 = queryNorm
            0.19909015 = fieldWeight in 6, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.006528 = idf(docFreq=295, maxDocs=44218)
              0.0234375 = fieldNorm(doc=6)
      0.16666667 = coord(1/6)
  0.5 = coord(1/2)

Content

Inhalt: Chapter 1. Introduction to Web Search Engines: 1.1 A Short History of Information Retrieval - 1.2 An Overview of Traditional Information Retrieval - 1.3 Web Information Retrieval Chapter 2. Crawling, Indexing, and Query Processing: 2.1 Crawling - 2.2 The Content Index - 2.3 Query Processing Chapter 3. Ranking Webpages by Popularity: 3.1 The Scene in 1998 - 3.2 Two Theses - 3.3 Query-Independence Chapter 4. The Mathematics of Google's PageRank: 4.1 The Original Summation Formula for PageRank - 4.2 Matrix Representation of the Summation Equations - 4.3 Problems with the Iterative Process - 4.4 A Little Markov Chain Theory - 4.5 Early Adjustments to the Basic Model - 4.6 Computation of the PageRank Vector - 4.7 Theorem and Proof for Spectrum of the Google Matrix Chapter 5. Parameters in the PageRank Model: 5.1 The a Factor - 5.2 The Hyperlink Matrix H - 5.3 The Teleportation Matrix E Chapter 6. The Sensitivity of PageRank; 6.1 Sensitivity with respect to alpha - 6.2 Sensitivity with respect to H - 6.3 Sensitivity with respect to vT - 6.4 Other Analyses of Sensitivity - 6.5 Sensitivity Theorems and Proofs Chapter 7. The PageRank Problem as a Linear System: 7.1 Properties of (I - alphaS) - 7.2 Properties of (I - alphaH) - 7.3 Proof of the PageRank Sparse Linear System Chapter 8. Issues in Large-Scale Implementation of PageRank: 8.1 Storage Issues - 8.2 Convergence Criterion - 8.3 Accuracy - 8.4 Dangling Nodes - 8.5 Back Button Modeling