Search (4 results, page 1 of 1)

0.054015677 = product of:
  0.081023514 = sum of:
    0.053230833 = weight(_text_:resources in 262) [ClassicSimilarity], result of:
      0.053230833 = score(doc=262,freq=4.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.28518265 = fieldWeight in 262, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.0390625 = fieldNorm(doc=262)
    0.027792677 = product of:
      0.055585355 = sum of:
        0.055585355 = weight(_text_:management in 262) [ClassicSimilarity], result of:
          0.055585355 = score(doc=262,freq=6.0), product of:
            0.17235184 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051133685 = queryNorm
            0.32251096 = fieldWeight in 262, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.0390625 = fieldNorm(doc=262)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

The Architecture of Cyberspace is aimed at students taking information management as a minor in their course as well as those who manage document collections but who are not professional librarians. The first part of this book looks at how users find documents and the problems they have; the second part discusses how to manage the information space using various tools such as classification and controlled vocabularies. It also explores the general issues of publishing, including legal considerations, as well the main issues of creating and managing archives. Supported by exercises and discussion questions at the end of each chapter, the book includes some sample assignments suitable for use with students of this subject. A glossary is also provided to help readers understand the specialised vocabulary and the key concepts in the design and assessment of information spaces.

LCSH

Information resources management

Subject

Information resources management

0.015055953 = product of:
  0.045167856 = sum of:
    0.045167856 = weight(_text_:resources in 6) [ClassicSimilarity], result of:
      0.045167856 = score(doc=6,freq=8.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.2419855 = fieldWeight in 6, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.0234375 = fieldNorm(doc=6)
  0.33333334 = coord(1/3)

Abstract

Why doesn't your home page appear on the first page of search results, even when you query your own name? How do other Web pages always appear at the top? What creates these powerful rankings? And how? The first book ever about the science of Web page rankings, "Google's PageRank and Beyond" supplies the answers to these and other questions and more. The book serves two very different audiences: the curious science reader and the technical computational reader. The chapters build in mathematical sophistication, so that the first five are accessible to the general academic reader. While other chapters are much more mathematical in nature, each one contains something for both audiences. For example, the authors include entertaining asides such as how search engines make money and how the Great Firewall of China influences research. The book includes an extensive background chapter designed to help readers learn more about the mathematics of search engines, and it contains several MATLAB codes and links to sample Web data sets. The philosophy throughout is to encourage readers to experiment with the ideas and algorithms in the text. Any business seriously interested in improving its rankings in the major search engines can benefit from the clear examples, sample code, and list of resources provided. It includes: many illustrative examples and entertaining asides; MATLAB code; accessible and informal style; and complete and self-contained section for mathematics review.

Content

Chapter 9. Accelerating the Computation of PageRank: 9.1 An Adaptive Power Method - 9.2 Extrapolation - 9.3 Aggregation - 9.4 Other Numerical Methods Chapter 10. Updating the PageRank Vector: 10.1 The Two Updating Problems and their History - 10.2 Restarting the Power Method - 10.3 Approximate Updating Using Approximate Aggregation - 10.4 Exact Aggregation - 10.5 Exact vs. Approximate Aggregation - 10.6 Updating with Iterative Aggregation - 10.7 Determining the Partition - 10.8 Conclusions Chapter 11. The HITS Method for Ranking Webpages: 11.1 The HITS Algorithm - 11.2 HITS Implementation - 11.3 HITS Convergence - 11.4 HITS Example - 11.5 Strengths and Weaknesses of HITS - 11.6 HITS's Relationship to Bibliometrics - 11.7 Query-Independent HITS - 11.8 Accelerating HITS - 11.9 HITS Sensitivity Chapter 12. Other Link Methods for Ranking Webpages: 12.1 SALSA - 12.2 Hybrid Ranking Methods - 12.3 Rankings based on Traffic Flow Chapter 13. The Future of Web Information Retrieval: 13.1 Spam - 13.2 Personalization - 13.3 Clustering - 13.4 Intelligent Agents - 13.5 Trends and Time-Sensitive Search - 13.6 Privacy and Censorship - 13.7 Library Classification Schemes - 13.8 Data Fusion Chapter 14. Resources for Web Information Retrieval: 14.1 Resources for Getting Started - 14.2 Resources for Serious Study Chapter 15. The Mathematics Guide: 15.1 Linear Algebra - 15.2 Perron-Frobenius Theory - 15.3 Markov Chains - 15.4 Perron Complementation - 15.5 Stochastic Complementation - 15.6 Censoring - 15.7 Aggregation - 15.8 Disaggregation

0.009568052 = product of:
  0.028704155 = sum of:
    0.028704155 = product of:
      0.05740831 = sum of:
        0.05740831 = weight(_text_:management in 4731) [ClassicSimilarity], result of:
          0.05740831 = score(doc=4731,freq=10.0), product of:
            0.17235184 = queryWeight, product of:
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.051133685 = queryNorm
            0.3330879 = fieldWeight in 4731, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              3.3706124 = idf(docFreq=4130, maxDocs=44218)
              0.03125 = fieldNorm(doc=4731)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

Das Werk behandelt die aktuellen Entwicklungen zur inhaltlichen Erschließung von Informationsquellen im Internet. Topic Maps, semantische Modelle vernetzter Informationsressourcen unter Verwendung von XML bzw. HyTime, bieten alle notwendigen Modellierungskonstrukte, um Dokumente im Internet zu klassifizieren und ein assoziatives, semantisches Netzwerk über diese zu legen. Neben Einführungen in XML, XLink, XPointer sowie HyTime wird anhand von Einsatzszenarien gezeigt, wie diese neuartige Technologie für Content Management und Information Retrieval im Internet funktioniert. Der Entwurf einer Abfragesprache wird ebenso skizziert wie der Prototyp einer intelligenten Suchmaschine. Das Buch zeigt, wie Topic Maps den Weg zu semantisch gesteuerten Suchprozessen im Internet weisen.

RSWK

Content Management / Semantisches Netz / HyTime
Content Management / Semantisches Netz / XML

Subject

Content Management / Semantisches Netz / HyTime
Content Management / Semantisches Netz / XML

0.0057732575 = product of:
  0.017319772 = sum of:
    0.017319772 = product of:
      0.034639545 = sum of:
        0.034639545 = weight(_text_:22 in 767) [ClassicSimilarity], result of:
          0.034639545 = score(doc=767,freq=2.0), product of:
            0.17906146 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051133685 = queryNorm
            0.19345059 = fieldWeight in 767, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=767)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Date

22. 3.2008 14:24:08