Search (11 results, page 1 of 1)

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Content

Inhalt: Acknowledgments; Abstract; Zusammenfassung; Contents; List of Figures; List of Tables; List of Acronyms; Chapter 1 Introduction ; 1.1 Research Questions; 1.2 Thesis Outline; Part I Fundamentals ; Chapter 2 Information Retrieval for Young Users ; 2.1 Basics of Information Retrieval; 2.1.1 Architecture of an IR System; 2.1.2 Relevance Ranking; 2.1.3 Search User Interfaces; 2.1.4 Targeted Search Engines; 2.2 Aspects of Child Development Relevant for Information Retrieval Tasks; 2.2.1 Human Cognitive Development; 2.2.2 Information Processing Theory; 2.2.3 Psychosocial Development 2.3 User Studies and Evaluation2.3.1 Methods in User Studies; 2.3.2 Types of Evaluation; 2.3.3 Evaluation with Children; 2.4 Discussion; Chapter 3 State of the Art ; 3.1 Children's Information-Seeking Behaviour; 3.1.1 Querying Behaviour; 3.1.2 Search Strategy; 3.1.3 Navigation Style; 3.1.4 User Interface; 3.1.5 Relevance Judgement; 3.2 Existing Algorithms and User Interface Concepts for Children; 3.2.1 Query; 3.2.2 Content; 3.2.3 Ranking; 3.2.4 Search Result Visualisation; 3.3 Existing Information Retrieval Systems for Children; 3.3.1 Digital Book Libraries; 3.3.2 Web Search Engines 3.4 Summary and DiscussionPart II Studying Open Issues ; Chapter 4 Usability of Existing Search Engines for Young Users ; 4.1 Assessment Criteria; 4.1.1 Criteria for Matching the Motor Skills; 4.1.2 Criteria for Matching the Cognitive Skills; 4.2 Results; 4.2.1 Conformance with Motor Skills; 4.2.2 Conformance with the Cognitive Skills; 4.2.3 Presentation of Search Results; 4.2.4 Browsing versus Searching; 4.2.5 Navigational Style; 4.3 Summary and Discussion; Chapter 5 Large-scale Analysis of Children's Queries and Search Interactions; 5.1 Dataset; 5.2 Results; 5.3 Summary and Discussion Chapter 6 Differences in Usability and Perception of Targeted Web Search Engines between Children and Adults 6.1 Related Work; 6.2 User Study; 6.3 Study Results; 6.4 Summary and Discussion; Part III Tackling the Challenges ; Chapter 7 Search User Interface Design for Children ; 7.1 Conceptual Challenges and Possible Solutions; 7.2 Knowledge Journey Design; 7.3 Evaluation; 7.3.1 Study Design; 7.3.2 Study Results; 7.4 Voice-Controlled Search: Initial Study; 7.4.1 User Study; 7.5 Summary and Discussion; Chapter 8 Addressing User Diversity ; 8.1 Evolving Search User Interface 8.1.1 Mapping Function8.1.2 Evolving Skills; 8.1.3 Detection of User Abilities; 8.1.4 Design Concepts; 8.2 Adaptation of a Search User Interface towards User Needs; 8.2.1 Design & Implementation; 8.2.2 Search Input; 8.2.3 Result Output; 8.2.4 General Properties; 8.2.5 Configuration and Further Details; 8.3 Evaluation; 8.3.1 Study Design; 8.3.2 Study Results; 8.3.3 Preferred UI Settings; 8.3.4 User satisfaction; 8.4 Knowledge Journey Exhibit; 8.4.1 Hardware; 8.4.2 Frontend; 8.4.3 Backend; 8.5 Summary and Discussion; Chapter 9 Supporting Visual Searchers in Processing Search Results 9.1 Related Work

Date

1. 2.2016 18:25:22

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Series

Journal of internet cataloging; 2, nos. 1/2

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Footnote

Rez. in: JASIS 49(1998) no.7, S.672 (C. Schwartz), Database 21(1998) no.2, S.92 (D.L. Wiley)

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Signature

79 TWP 482(2)

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Date

3. 5.1997 8:44:22

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Isbn

978-1- 78052-636-2

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Date

2. 5.2017 15:50:05

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Signature

63 TWP 591 (2)

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Isbn

0-521-63028-2

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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

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Footnote

Co-published simultaneously as Internet reference services quarterly, vol. 10(1005), nos. 3/4 Rez. in: ZfBB 54(2007) H.2, S.98-99 (D. Lewandowski): "Google und Bibliotheken? Meist hat man leider den Eindruck, dass hier eher ein oder gedacht wird. Dies sehen auch die Herausgeber des vorliegenden Bandes und nehmen deshalb neben Beiträgen zur Diskussion um die Rolle der Bibliotheken im Zeitalter von Google auch solche auf, die Tipps zur Verwendung unterschiedlicher Google-Dienste geben. Die allgemeine Diskussion um Google und die Bibliotheken dreht sich vor allem um die Rolle, die Bibliotheken (mit ihren Informationsportalen) noch spielen können, wenn ihre Nutzer sowieso bei Google suchen, auch wenn die Bibliotheksangebote (zumindest von den Bibliothekaren) als überlegen empfunden werden. Auch wenn die Nutzer geschult werden, greifen sie doch meist lieber zur einfachen Recherchemöglichkeit bei Google oder anderen Suchmaschinen - vielleicht lässt sich die Situation am besten mit dem Satz eines im Buch zitierten Bibliothekars ausdrücken: »Everyone starts with Google except librarians.« (5.95) Sollen die Bibliotheken nun Google die einfache Recherche ganz überlassen und sich auf die komplexeren Suchfragen konzentrieren? Oder verlieren sie dadurch eine Nutzerschaft, die sich mittlerweile gar nicht mehr vorstellen kann, dass man mit anderen Werkzeugen als Suchmaschinen bessere Ergebnisse erzielen kann? Diese sicherlich für die Zukunft der Bibliotheken maßgebliche Frage wird in mehreren Beiträgen diskutiert, wobei auffällt, dass die jeweiligen Autoren keine klare Antwort bieten können, wie Bibliotheken ihre Quellen so präsentieren können, dass die Nutzer mit der Recherche so zufrieden sind, dass sie freiwillig in den Bibliotheksangeboten anstatt in Google recherchieren. Den Schwerpunkt des Buchs machen aber nicht diese eher theoretischen Aufsätze aus, sondern solche, die sich mit konkreten Google-Diensten beschäftigen. Aufgrund ihrer Nähe zu den Bibliotheksangeboten bzw. den Aufgaben der Bibliotheken sind dies vor allem Google Print und Google Scholar, aber auch die Google Search Appliance. Bei letzterer handelt es sich um eine integrierte Hard- und Softwarelösung, die die Indexierung von Inhalten aus unterschiedlichen Datenquellen ermöglicht. Der Aufsatz von Mary Taylor beschreibt die Vor- und Nachteile des Systems anhand der praktischen Anwendung in der University of Nevada.