Search (7 results, page 1 of 1)

0.05359769 = product of:
  0.08039653 = sum of:
    0.06066445 = weight(_text_:index in 4041) [ClassicSimilarity], result of:
      0.06066445 = score(doc=4041,freq=4.0), product of:
        0.2221244 = queryWeight, product of:
          4.369764 = idf(docFreq=1520, maxDocs=44218)
          0.05083213 = queryNorm
        0.27311024 = fieldWeight in 4041, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.369764 = idf(docFreq=1520, maxDocs=44218)
          0.03125 = fieldNorm(doc=4041)
    0.01973208 = product of:
      0.03946416 = sum of:
        0.03946416 = weight(_text_:classification in 4041) [ClassicSimilarity], result of:
          0.03946416 = score(doc=4041,freq=6.0), product of:
            0.16188543 = queryWeight, product of:
              3.1847067 = idf(docFreq=4974, maxDocs=44218)
              0.05083213 = queryNorm
            0.24377833 = fieldWeight in 4041, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.1847067 = idf(docFreq=4974, maxDocs=44218)
              0.03125 = fieldNorm(doc=4041)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

Class-tested and coherent, this textbook teaches information retrieval, including web search, text classification, and text clustering from basic concepts. Ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced undergraduates and graduate students. Slides and additional exercises are available for lecturers. - This book provides what Salton and Van Rijsbergen both failed to achieve. Even more important, unlike some other books in IR, the authors appear to care about making the theory as accessible as possible to the reader, on occasion including short primers to certain topics or choosing to explain difficult concepts using simplified approaches. Its coverage [is] excellent, the quality of writing high and I was surprised how much I learned from reading it. I think the online resources are impressive.

Content

Inhalt: Boolean retrieval - The term vocabulary & postings lists - Dictionaries and tolerant retrieval - Index construction - Index compression - Scoring, term weighting & the vector space model - Computing scores in a complete search system - Evaluation in information retrieval - Relevance feedback & query expansion - XML retrieval - Probabilistic information retrieval - Language models for information retrieval - Text classification & Naive Bayes - Vector space classification - Support vector machines & machine learning on documents - Flat clustering - Hierarchical clustering - Matrix decompositions & latent semantic indexing - Web search basics - Web crawling and indexes - Link analysis Vgl. die digitale Fassung unter: http://nlp.stanford.edu/IR-book/pdf/irbookprint.pdf.

0.031187883 = product of:
  0.046781823 = sum of:
    0.03217218 = weight(_text_:index in 1784) [ClassicSimilarity], result of:
      0.03217218 = score(doc=1784,freq=2.0), product of:
        0.2221244 = queryWeight, product of:
          4.369764 = idf(docFreq=1520, maxDocs=44218)
          0.05083213 = queryNorm
        0.14483857 = fieldWeight in 1784, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.369764 = idf(docFreq=1520, maxDocs=44218)
          0.0234375 = fieldNorm(doc=1784)
    0.014609644 = product of:
      0.029219288 = sum of:
        0.029219288 = weight(_text_:22 in 1784) [ClassicSimilarity], result of:
          0.029219288 = score(doc=1784,freq=4.0), product of:
            0.17800546 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05083213 = queryNorm
            0.16414827 = fieldWeight in 1784, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0234375 = fieldNorm(doc=1784)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Content

Enthält die Beiträge: Katy Börner and Chaomei Chen: Visual Interfaces to Digital Libraries: Motivation, Utilization, and Socio-technical Challenges - Part I. Visual interfaces to Documents, Document Parts, Document Variants, and Document Usage Data - George Buchanan, Ann Blandford, Matt Jones, and Harold Thimbleby: Spatial Hypertext as a Reader Tool in Digital Libraries; Michael Christoffel and Bethina Schmitt: Accessing Libraries as Easy as a Game; Carlos Monroy, Rajiv Kochumman, Richard Furuta, and Eduardo Urbina: Interactive Timeline Viewer (ItLv): A Tool to Visualize Variants Among Documents; Mischa Weiss-Lijn, Janet T. McDonnell, and Leslie James: An Empirical Evaluation of the Interactive Visualization of Metadata to Support Document Use; Stephen G. Eick: Visual Analysis of Website Browsing Patterns - Part II. Visual Interfaces to Image and Video Documents - Adrian Graham, Hector Garcia-Molina, Andreas Paepcke, and Terry Winograd: Extreme Temporal Photo Browsing; Michael G. Christel: Accessing News Video Libraries through Dynamic Information Extraction, Summarization, and Visualization; Anselm Spoerri: Handwritten Notes as a Visual Interface to Index, Edit and Publish Audio/Video Highlights - Part III. Visualization of Knowledge Domains - Jan W. Buzydlowski, Howard D. White, and Xia Lin: Term Co-occurrence Analysis as an Interface for Digital Libraries; Kevin W. Boyack, Brian N. Wylie, and George S. Davidson: Information Visualization, Human-Computer Interaction, and Cognitive Psychology: Domain Visualizations - Part IV. Cartographic Interfaces to Digital Libraries - André Skupin: On Geometry and Transformation in Map-Like Information Visualization; Guoray Cai: GeoVIBE: A Visual Interface for Geographic Digital Libraries: Teong Joo Ong, John J. Leggett, Hugh D. Wilson, Stephan L. Hatch, and Monique D. Reed: Interactive Information Visualization in the Digital Flora of Texas; Dan Ancona, Mike Freeston, Terry Smith, and Sara Fabrikant: Visual Explorations for the Alexandria Digital Earth Prototype - Part V. Towards a General Framework - Rao Shen, Jun Wang, and Edward A. Fox: A Lightweight Protocol between Digital Libraries and Visualization Systems; Chaomei Chen and Katy Börner: Top Ten Problems in Visual Interfaces to Digital Libraries

Date

22. 2.2003 17:25:39
22. 3.2008 15:02:37

0.030957699 = product of:
  0.0928731 = sum of:
    0.0928731 = weight(_text_:index in 5961) [ClassicSimilarity], result of:
      0.0928731 = score(doc=5961,freq=6.0), product of:
        0.2221244 = queryWeight, product of:
          4.369764 = idf(docFreq=1520, maxDocs=44218)
          0.05083213 = queryNorm
        0.418113 = fieldWeight in 5961, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          4.369764 = idf(docFreq=1520, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5961)
  0.33333334 = coord(1/3)

Abstract

Recent years have seen an explosive growth in the use of new database applications such as CAD/CAM systems, spatial information systems, and multimedia information systems. The needs of these applications are far more complex than traditional business applications. They call for support of objects with complex data types, such as images and spatial objects, and for support of objects with wildly varying numbers of index terms, such as documents. Traditional indexing techniques such as the B-tree and its variants do not efficiently support these applications, and so new indexing mechanisms have been developed.As a result of the demand for database support for new applications, there has been a proliferation of new indexing techniques. The need for a book addressing indexing problems in advanced applications is evident. For practitioners and database and application developers, this book explains best practice, guiding the selection of appropriate indexes for each application. For researchers, this book provides a foundation for the development of new and more robust indexes. For newcomers, this book is an overview of the wide range of advanced indexing techniques. "Indexing Techniques for Advanced Database Systems" is suitable as a secondary text for a graduate level course on indexing techniques, and as a reference for researchers and practitioners in industry.

Classification

Mat T 1091 / Index

SBB

Mat T 1091 / Index

0.01992352 = product of:
  0.059770554 = sum of:
    0.059770554 = sum of:
      0.03222235 = weight(_text_:classification in 2426) [ClassicSimilarity], result of:
        0.03222235 = score(doc=2426,freq=4.0), product of:
          0.16188543 = queryWeight, product of:
            3.1847067 = idf(docFreq=4974, maxDocs=44218)
            0.05083213 = queryNorm
          0.19904417 = fieldWeight in 2426, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.1847067 = idf(docFreq=4974, maxDocs=44218)
            0.03125 = fieldNorm(doc=2426)
      0.027548207 = weight(_text_:22 in 2426) [ClassicSimilarity], result of:
        0.027548207 = score(doc=2426,freq=2.0), product of:
          0.17800546 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05083213 = queryNorm
          0.15476047 = fieldWeight in 2426, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.03125 = fieldNorm(doc=2426)
  0.33333334 = coord(1/3)

Abstract

This book constitutes the refereed proceedings of the 7th European Conference on Research and Advanced Technology for Digital Libraries, ECDL 2003, held in Trondheim, Norway in August 2003. The 39 revised full papers and 8 revised short papers presented were carefully reviewed and selected from 161 submissions. The papers are organized in topical sections on uses, users, and user interfaces; metadata applications; annotation and recommendation; automatic classification and indexing; Web technologies; topical crawling and subject gateways; architectures and systems; knowledge organization; collection building and management; information retrieval; digital preservation; and indexing and searching of special documents and collection information.

Content

Inhalt: Uses, Users, and User Interaction Metadata Applications - Semantic Browsing / Alexander Faaborg, Carl Lagoze Annotation and Recommendation Automatic Classification and Indexing - Cross-Lingual Text Categorization / Nuria Bel, Cornelis H.A. Koster, Marta Villegas - Automatic Multi-label Subject Indexing in a Multilingual Environment / Boris Lauser, Andreas Hotho Web Technologies Topical Crawling, Subject Gateways - VASCODA: A German Scientific Portal for Cross-Searching Distributed Digital Resource Collections / Heike Neuroth, Tamara Pianos Architectures and Systems Knowledge Organization: Concepts - The ADEPT Concept-Based Digital Learning Environment / T.R. Smith, D. Ancona, O. Buchel, M. Freeston, W. Heller, R. Nottrott, T. Tierney, A. Ushakov - A User Evaluation of Hierarchical Phrase Browsing / Katrina D. Edgar, David M. Nichols, Gordon W. Paynter, Kirsten Thomson, Ian H. Witten - Visual Semantic Modeling of Digital Libraries / Qinwei Zhu, Marcos Andre Gongalves, Rao Shen, Lillian Cassell, Edward A. Fox Collection Building and Management Knowledge Organization: Authorities and Works - Automatic Conversion from MARC to FRBR / Christian Monch, Trond Aalberg Information Retrieval in Different Application Areas Digital Preservation Indexing and Searching of Special Document and Collection Information

0.0053703915 = product of:
  0.016111175 = sum of:
    0.016111175 = product of:
      0.03222235 = sum of:
        0.03222235 = weight(_text_:classification in 2423) [ClassicSimilarity], result of:
          0.03222235 = score(doc=2423,freq=4.0), product of:
            0.16188543 = queryWeight, product of:
              3.1847067 = idf(docFreq=4974, maxDocs=44218)
              0.05083213 = queryNorm
            0.19904417 = fieldWeight in 2423, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.1847067 = idf(docFreq=4974, maxDocs=44218)
              0.03125 = fieldNorm(doc=2423)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

This book constitutes the refereed proceedings of the 9th European Conference on Research and Advanced Technology for Digital Libraries, ECDL 2005, held in Vienna, Austria in September 2005. The 41 revised full papers presented together with 2 panel papers and 30 revised poster papers were carefully reviewed and selected from a total of 162 submissions. The papers are organized in topical sections on digital library models and architectures, multimedia and hypermedia digital libraries, XML, building digital libraries, user studies, digital preservation, metadata, digital libraries and e-learning, text classification in digital libraries, searching, and text digital libraries.

Content

Inhalt u.a.: - Digital Library Models and Architectures - Multimedia and Hypermedia Digital Libraries - XML - Building Digital Libraries - User Studies - Digital Preservation - Metadata - Digital Libraries and e-Learning - Text Classification in Digital Libraries - Searching - - Focused Crawling Using Latent Semantic Indexing - An Application for Vertical Search Engines / George Almpanidis, Constantine Kotropoulos, Ioannis Pitas - - Active Support for Query Formulation in Virtual Digital Libraries: A Case Study with DAFFODIL / Andre Schaefer, Matthias Jordan, Claus-Peter Klas, Norbert Fuhr - - Expression of Z39.50 Supported Search Capabilities by Applying Formal Descriptions / Michalis Sfakakis, Sarantos Kapidakis - Text Digital Libraries

0.004591368 = product of:
  0.0137741035 = sum of:
    0.0137741035 = product of:
      0.027548207 = sum of:
        0.027548207 = weight(_text_:22 in 2428) [ClassicSimilarity], result of:
          0.027548207 = score(doc=2428,freq=2.0), product of:
            0.17800546 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05083213 = queryNorm
            0.15476047 = fieldWeight in 2428, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03125 = fieldNorm(doc=2428)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

0.0026851958 = product of:
  0.008055587 = sum of:
    0.008055587 = product of:
      0.016111175 = sum of:
        0.016111175 = weight(_text_:classification in 172) [ClassicSimilarity], result of:
          0.016111175 = score(doc=172,freq=4.0), product of:
            0.16188543 = queryWeight, product of:
              3.1847067 = idf(docFreq=4974, maxDocs=44218)
              0.05083213 = queryNorm
            0.099522084 = fieldWeight in 172, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.1847067 = idf(docFreq=4974, maxDocs=44218)
              0.015625 = fieldNorm(doc=172)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Content

Inhalt: SESSION: Building and using cultural digital libraries Primarily history: historians and the search for primary source materials (Helen R. Tibbo) - Using the Gamera framework for the recognition of cultural heritage materials (Michael Droettboom, Ichiro Fujinaga, Karl MacMillan, G. Sayeed Chouhury, Tim DiLauro, Mark Patton, Teal Anderson) - Supporting access to large digital oral history archives (Samuel Gustman, Dagobert Soergel, Douglas Oard, William Byrne, Michael Picheny, Bhuvana Ramabhadran, Douglas Greenberg) SESSION: Summarization and question answering Using sentence-selection heuristics to rank text segments in TXTRACTOR (Daniel McDonald, Hsinchun Chen) - Using librarian techniques in automatic text summarization for information retrieval (Min-Yen Kan, Judith L. Klavans) - QuASM: a system for question answering using semi-structured data (David Pinto, Michael Branstein, Ryan Coleman, W. Bruce Croft, Matthew King, Wei Li, Xing Wei) SESSION: Studying users Reading-in-the-small: a study of reading on small form factor devices (Catherine C. Marshall, Christine Ruotolo) - A graph-based recommender system for digital library (Zan Huang, Wingyan Chung, Thian-Huat Ong, Hsinchun Chen) - The effects of topic familiarity on information search behavior (Diane Kelly, Colleen Cool) SESSION: Classification and browsing A language modelling approach to relevance profiling for document browsing (David J. Harper, Sara Coulthard, Sun Yixing) - Compound descriptors in context: a matching function for classifications and thesauri (Douglas Tudhope, Ceri Binding, Dorothee Blocks, Daniel Cunliffe) - Structuring keyword-based queries for web databases (Rodrigo C. Vieira, Pavel Calado, Altigran S. da Silva, Alberto H. F. Laender, Berthier A. Ribeiro-Neto) - An approach to automatic classification of text for information retrieval (Hong Cui, P. Bryan Heidorn, Hong Zhang)