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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

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Footnote

Rez. in: Library resources and technical services 36(1992) no.4, S.525-526 (M. Johnson)

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Abstract

A system of library classification that flashed across the inquiring mind of young Melvil Louis Kossuth Dewey (known as Melvil Dewey) in 1873 is still the most popular classification scheme.. The modern library classification begins with Dewey Decimal Classification (DDC). Melvil Dewey devised DDC in 1876. DDC has is credit of 128 years of boudless success. The DDC is being taught as a practical subject throughout the world and it is being used in majority of libraries in about 150 countries. This is the result of continuous revision that 22nd Edition of DDC has been published in July 2003. No other classification scheme has published so many editions. Some welcome changes have been made in DDC 22. To reduce the Christian bias in 200 religion, the numbers 201 to 209 have been devoted to specific aspects of religion. In the previous editions these numbers were devoted to Christianity. to enhance the classifier's efficiency, Table 7 has been removed from DDC 22 and the provision of adding group of persons is made by direct use of notation already available in schedules and in notation -08 from Table 1 Standard Subdivision. The present book is an attempt to explain, with suitable examples, the salient provisions of DDC 22. The book is written in simple language so that the students may not face any difficulty in understanding what is being explained. The examples in the book are explained in a step-by-step procedure. It is hoped that this book will prove of great help and use to the library professionals in general and library and information science students in particular.

Content

1. Introduction to DDC 22 2. Major changes in DDC 22 3. Introduction to the schedules 4. Use of Table 1 : Standard Subdivisions 5. Use of Table 2 : Areas 6. Use of Table 3 : Subdivisions for the arts, for individual literatures, for specific literary forms 7. Use to Table 4 : Subdivisions of individual languages and language families 8. Use of Table 5 : Ethic and National groups 9. Use of Table 6 : Languages 10. Treatment of Groups of Persons

Object

DDC-22

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Abstract

The Multilingual Dictionary of Knowledge Management comprises some 3,400 basic and topical terms in the major European languages, i.e. English, French, Spanish, Italian and German. The terms, which are presented in an introductory summary, cover all areas relevant for making knowledge management a success, such as database tcchnologv, document management and knowledge presentation. The terms as such were compiled on the basis of current original sources, reference books and specialist journals of the countries in question

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Footnote

Rez. in: Knowledge organization 27(2000) no.3, H.175-177 (B. Kwasnik); College and research libraries 61(2000) no.4, S.380-381 (J. Williams); Library resources and technical services 44(2000) no.4, S.107-108 (H.A. Olson); JASIST 51(2000) no.12, S.1149-1150 (T.A. Brooks)

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Date

22. 3.2008 18:09:52

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Date

28. 2.2008 17:22:52

Object

DDC-22

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Date

22. 6.2008 13:03:30

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Date

15. 7.2018 16:22:16

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]) .

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Abstract

This revised edition of Wynar's Introduction to Cataloging and Classification (9th ed., 2000) completely incorporates revisions of AACR2, enhancements to MARC 21, and developments in areas such as resource description and access. Aside from the many revisions and updates and improved organization, the basic content remains the same. Beginning with an introduction to cataloging, cataloging rules, and MARC format, the book then turns to its largest section, "Description and Access." Authority control is explained, and the various methods of subject access are described in detail. Finally, administrative issues, including catalog management, are discussed. The glossary, source notes, suggested reading, and selected bibliography have been updated and expanded, as has the index. The examples throughout help to illustrate rules and concepts, and most MARC record examples are now shown in OCLC's Connexion format. This is an invaluable resource for cataloging students and beginning catalogers as well as a handy reference tool for more experienced catalogers.

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Footnote

Ton Heijligers reflects an the relation of the IME ICC effort to AACR and calls for an examination of the principles and function of the concept of main entry in his brief paper "Main entry into the future?" Ingrid Parent's article "From ISBD (S) to ISBD(CR): a voyage of discovery and alignment" is reprinted from Serials Librarian as it tells of the successful project not only to revise an ISBD, but also to harmonize three Codes for serials cataloguing: ISBD (CR), ISSN and AACR. Gunilla Jonsson's paper "The bibliographic unit in the digital context" is a perceptive discussion of level of granularity issues which must be addressed in deciding what to catalogue. Practical issues and user expectation are important considerations, whether the material to be catalogued is digital or analog. Ann Huthwaite's paper "Class of materials concept and GMDs" as well as Tom Delsey's ensuing comments, originated as Joint Steering Committee restricted papers in 2002. It is a great service to have them made widely available in this form as they raise fundamental issues and motivate work that has since taken place, leading to the current major round of revision to AACR. The GMD issue is about more than a list of terms and their placement in the cataloguing record, it is intertwined with consideration of whether the concept of classes of materials is helpful in organizing cataloguing rules, if so, which classes are needed, and how to allow for eventual integration of new types of materials. Useful in the Code comparison exercise is an extract of the section an access points from the draft of revised RAK (German cataloguing rules). Four short papers compare aspects of the Russian Cataloguing Rules with RAK and AACR: Tatiana Maskhoulia covers corporate body headings; Elena Zagorskaya outlines current development an serials and other continuing resources; Natalia N. Kasparova covers multilevel structures; Ljubov Ermakova and Tamara Bakhturina describe the uniform title and GMD provisions. The website includes one more item by Kasparova "Bibliographic record language in multilingual electronic communication." The volume is rounded out by the appendix which includes the conference agenda, the full list of participants, and the reports from the five working groups. Not for the casual reader, this volume is a must read for anyone working an cataloguing code development at the national or international levels, as well as those teaching cataloguing. Any practising cataloguer will benefit from reading the draft statement of principles and the three presentation papers, and dipping into the background papers."

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Abstract

Many information professionals working in small units today fail to find the published tools for subject-based organization that are appropriate to their local needs, whether they are archivists, special librarians, information officers, or knowledge or content managers. Large established standards for document description and organization are too unwieldy, unnecessarily detailed, or too expensive to install and maintain. In other cases the available systems are insufficient for a specialist environment, or don't bring things together in a helpful way. A purpose built, in-house system would seem to be the answer, but too often the skills necessary to create one are lacking. This practical text examines the criteria relevant to the selection of a subject-management system, describes the characteristics of some common types of subject tool, and takes the novice step by step through the process of creating a system for a specialist environment. The methodology employed is a standard technique for the building of a thesaurus that incidentally creates a compatible classification or taxonomy, both of which may be used in a variety of ways for document or information management. Key areas covered are: What is a thesaurus? Tools for subject access and retrieval; what a thesaurus is used for? Why use a thesaurus? Examples of thesauri; the structure of a thesaurus; thesaural relationships; practical thesaurus construction; the vocabulary of the thesaurus; building the systematic structure; conversion to alphabetic format; forms of entry in the thesaurus; maintaining the thesaurus; thesaurus software; and; the wider environment. Essential for the practising information professional, this guide is also valuable for students of library and information science.