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E-grāmata: Folksonomies. Indexing and Retrieval in Web 2.0: Indexing and Retrieval in the Web 2.0 [De Gruyter E-books]

  • Formāts: 449 pages
  • Sērija : Knowledge and Information
  • Izdošanas datums: 30-Sep-2009
  • Izdevniecība: De Gruyter Saur
  • ISBN-13: 9783598441851
Citas grāmatas par šo tēmu:
  • De Gruyter E-books
  • Cena: 86,64 €*
  • * this price gives unlimited concurrent access for unlimited time
  • Formāts: 449 pages
  • Sērija : Knowledge and Information
  • Izdošanas datums: 30-Sep-2009
  • Izdevniecība: De Gruyter Saur
  • ISBN-13: 9783598441851
Citas grāmatas par šo tēmu:

In Web 2.0 users not only make heavy use of Col-laborative Information Services in order to create, publish and share digital information resources - what is more, they index and represent these re-sources via own keywords, so-called tags. The sum of this user-generated metadata of a Collaborative Information Service is also called Folksonomy. In contrast to professionally created and highly struc-tured metadata, e.g. subject headings, thesauri, clas-sification systems or ontologies, which are applied in libraries, corporate information architectures or commercial databases and which were developed according to defined standards, tags can be freely chosen by users and attached to any information resource. As one type of metadata Folksonomies provide access to information resources and serve users as retrieval tool in order to retrieve own re-sources as well as to find data of other users.

The book delivers insights into typical applications of Folksonomies, especially within Collaborative Information Services, and discusses the strengths and weaknesses of Folksonomies as tools of knowl-edge representation and information retrieval. More-over, it aims at providing conceptual considerations for solving problems of Folksonomies and presents how established methods of knowledge representa-tion and models of information retrieval can successfully be transferred to them.

Introduction 1
Current State of Research
5
Open Questions in Folksonomy Research
6
Notes on the Book's Structure
8
Bibliography
10
Chapter 1 Collaborative Information Services 13
Web 2.0 vs Social Software vs Collaborative Information Services
13
Social Bookmarking Services
23
E-Commerce
37
Commercial Information Services
45
Music-Sharing Services
49
Libraries 2.0 – Museums
55
Photosharing Services
69
Videosharing Services
80
Social Networks
88
Blogs and Blog Search Engines
96
Games with a Purpose (GWAP) – Tagging Games
100
Summary
104
Bibliography
107
Chapter 2 Basic Terms in Knowledge Representation and Information Retrieval 119
Introduction to Knowledge Representation
119
Paradigmatic and Syntagmatic Relations
124
Ontologies
124
Thesauri
125
Classification Systems
126
Nomenclatures
128
Text-Word Method
128
Citation Indexing
128
Knowledge Representation in the World Wide Web
129
Introduction to Information Retrieval
130
Relevance Distributions
131
Retrieval Models
133
Text Statistics
134
Vector Space Model
135
Probabilistic Model
136
Link Topology – Kleinberg Algorithm and PageRank
138
Information Linguistics – NLP
139
Similarity Coefficients and Cluster Analysis
142
Network Model
144
Bibliography
146
Chapter 3 Knowledge Representation in Web 2.0: Folksonomies 153
Defmition of the Term 'Folksonomy'
153
Tags – Users – Resources
157
Cognitive Skills
161
Broad vs Narrow Folksonomies
164
Collective Intelligence
166
Tag Distributions
170
Users' Tagging Behavior
184
Tag Categories
196
Tag Recommender Systems
204
Advantages and Disadvantages of Folksonomies in Knowledge Representation
212
Problem-Solving and Structuring Endeavors in Folksonomies
228
Tag Gardening in Knowledge Representation
235
Traditional Methods of Knowledge Representation vs Folksonomies
247
Outlook
255
Bibliography
262
Chapter 4 Information Retrieval with Folksonomies 283
The Relation between Knowledge Representation and Information Retrieval
285
Searching vs Browsing vs Retrieving
287
Information Filters – Information Filtering – Collaborative Filtering
293
Folksonomy-Based Recommender Systems in Information Retrieval
299
Retrieval Effectiveness of Folksonomies
310
Visualizations of Folksonomies
314
Disadvantages of Folksonomies in Information Retrieval
332
Query Tags as Indexing Tags
336
Relevance Ranking in Folksonomies
339
Power Tags
363
Tag Gardening in Information Retrieval
372
Outlook
388
Bibliography
393
Conclusion 411
Bibliography
418
Index of Names 419
Subject Index 431
Isabella Peters, Heinrich-Heine-Universität, Düsseldorf