Search (72 results, page 1 of 4)

  • × classification_ss:"06.74 / Informationssysteme"
  1. Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (1999) 0.30
    0.29584056 = product of:
      0.5916811 = sum of:
        0.01802184 = weight(_text_:information in 5777) [ClassicSimilarity], result of:
          0.01802184 = score(doc=5777,freq=12.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.2850541 = fieldWeight in 5777, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=5777)
        0.05779738 = weight(_text_:retrieval in 5777) [ClassicSimilarity], result of:
          0.05779738 = score(doc=5777,freq=14.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.5305404 = fieldWeight in 5777, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=5777)
        0.34320274 = weight(_text_:mathematisches in 5777) [ClassicSimilarity], result of:
          0.34320274 = score(doc=5777,freq=8.0), product of:
            0.30533072 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.036014426 = queryNorm
            1.1240361 = fieldWeight in 5777, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.046875 = fieldNorm(doc=5777)
        0.17265914 = weight(_text_:modell in 5777) [ClassicSimilarity], result of:
          0.17265914 = score(doc=5777,freq=8.0), product of:
            0.21656582 = queryWeight, product of:
              6.0133076 = idf(docFreq=293, maxDocs=44218)
              0.036014426 = queryNorm
            0.79725945 = fieldWeight in 5777, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              6.0133076 = idf(docFreq=293, maxDocs=44218)
              0.046875 = fieldNorm(doc=5777)
      0.5 = coord(4/8)
    
    Abstract
    This book discusses many of the key design issues for building search engines and emphazises the important role that applied mathematics can play in improving information retrieval. The authors discuss not only important data structures, algorithms, and software but also user-centered issues such as interfaces, manual indexing, and document preparation. They also present some of the current problems in information retrieval that many not be familiar to applied mathematicians and computer scientists and some of the driving computational methods (SVD, SDD) for automated conceptual indexing
    RSWK
    Suchmaschine / Information Retrieval
    World Wide Web / Suchmaschine / Mathematisches Modell (BVB)
    Suchmaschine / Information Retrieval / Mathematisches Modell (HEBIS)
    Subject
    Suchmaschine / Information Retrieval
    World Wide Web / Suchmaschine / Mathematisches Modell (BVB)
    Suchmaschine / Information Retrieval / Mathematisches Modell (HEBIS)
  2. Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (2005) 0.15
    0.14867443 = product of:
      0.29734886 = sum of:
        0.012977208 = weight(_text_:information in 7) [ClassicSimilarity], result of:
          0.012977208 = score(doc=7,freq=14.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.20526241 = fieldWeight in 7, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=7)
        0.041192 = weight(_text_:retrieval in 7) [ClassicSimilarity], result of:
          0.041192 = score(doc=7,freq=16.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.37811437 = fieldWeight in 7, product of:
              4.0 = tf(freq=16.0), with freq of:
                16.0 = termFreq=16.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=7)
        0.16178733 = weight(_text_:mathematisches in 7) [ClassicSimilarity], result of:
          0.16178733 = score(doc=7,freq=4.0), product of:
            0.30533072 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.036014426 = queryNorm
            0.5298757 = fieldWeight in 7, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.03125 = fieldNorm(doc=7)
        0.0813923 = weight(_text_:modell in 7) [ClassicSimilarity], result of:
          0.0813923 = score(doc=7,freq=4.0), product of:
            0.21656582 = queryWeight, product of:
              6.0133076 = idf(docFreq=293, maxDocs=44218)
              0.036014426 = queryNorm
            0.37583172 = fieldWeight in 7, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.0133076 = idf(docFreq=293, maxDocs=44218)
              0.03125 = fieldNorm(doc=7)
      0.5 = coord(4/8)
    
    Abstract
    The second edition of Understanding Search Engines: Mathematical Modeling and Text Retrieval follows the basic premise of the first edition by discussing many of the key design issues for building search engines and emphasizing the important role that applied mathematics can play in improving information retrieval. The authors discuss important data structures, algorithms, and software as well as user-centered issues such as interfaces, manual indexing, and document preparation. Significant changes bring the text up to date on current information retrieval methods: for example the addition of a new chapter on link-structure algorithms used in search engines such as Google. The chapter on user interface has been rewritten to specifically focus on search engine usability. In addition the authors have added new recommendations for further reading and expanded the bibliography, and have updated and streamlined the index to make it more reader friendly.
    Content
    Inhalt: Introduction Document File Preparation - Manual Indexing - Information Extraction - Vector Space Modeling - Matrix Decompositions - Query Representations - Ranking and Relevance Feedback - Searching by Link Structure - User Interface - Book Format Document File Preparation Document Purification and Analysis - Text Formatting - Validation - Manual Indexing - Automatic Indexing - Item Normalization - Inverted File Structures - Document File - Dictionary List - Inversion List - Other File Structures Vector Space Models Construction - Term-by-Document Matrices - Simple Query Matching - Design Issues - Term Weighting - Sparse Matrix Storage - Low-Rank Approximations Matrix Decompositions QR Factorization - Singular Value Decomposition - Low-Rank Approximations - Query Matching - Software - Semidiscrete Decomposition - Updating Techniques Query Management Query Binding - Types of Queries - Boolean Queries - Natural Language Queries - Thesaurus Queries - Fuzzy Queries - Term Searches - Probabilistic Queries Ranking and Relevance Feedback Performance Evaluation - Precision - Recall - Average Precision - Genetic Algorithms - Relevance Feedback Searching by Link Structure HITS Method - HITS Implementation - HITS Summary - PageRank Method - PageRank Adjustments - PageRank Implementation - PageRank Summary User Interface Considerations General Guidelines - Search Engine Interfaces - Form Fill-in - Display Considerations - Progress Indication - No Penalties for Error - Results - Test and Retest - Final Considerations Further Reading
    RSWK
    Suchmaschine / Information Retrieval
    Suchmaschine / Information Retrieval / Mathematisches Modell (HEBIS)
    Subject
    Suchmaschine / Information Retrieval
    Suchmaschine / Information Retrieval / Mathematisches Modell (HEBIS)
  3. Chu, H.: Information representation and retrieval in the digital age (2010) 0.03
    0.033781253 = product of:
      0.13512501 = sum of:
        0.036417197 = weight(_text_:information in 377) [ClassicSimilarity], result of:
          0.036417197 = score(doc=377,freq=36.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.5760162 = fieldWeight in 377, product of:
              6.0 = tf(freq=36.0), with freq of:
                36.0 = termFreq=36.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0546875 = fieldNorm(doc=377)
        0.09870782 = weight(_text_:retrieval in 377) [ClassicSimilarity], result of:
          0.09870782 = score(doc=377,freq=30.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.90607023 = fieldWeight in 377, product of:
              5.477226 = tf(freq=30.0), with freq of:
                30.0 = termFreq=30.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0546875 = fieldNorm(doc=377)
      0.25 = coord(2/8)
    
    Content
    Information representation and retrieval : an overview -- Information representation I : basic approaches -- Information representation II : related topics -- Language in information representation and retrieval -- Retrieval techniques and query representation -- Retrieval approaches -- Information retrieval models -- Information retrieval systems -- Retrieval of information unique in content or format -- The user dimension in information representation and retrieval -- Evaluation of information representation and retrieval -- Artificial intelligence in information representation and retrieval.
    Imprint
    Medford, NJ : Information Today
    LCSH
    Information organization
    Information retrieval
    Information storage and retrieval systems
    Subject
    Information organization
    Information retrieval
    Information storage and retrieval systems
  4. Borlund, P.: Evaluation of interactive information retrieval systems (2000) 0.03
    0.02920274 = product of:
      0.11681096 = sum of:
        0.02942954 = weight(_text_:information in 2556) [ClassicSimilarity], result of:
          0.02942954 = score(doc=2556,freq=18.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.46549135 = fieldWeight in 2556, product of:
              4.2426405 = tf(freq=18.0), with freq of:
                18.0 = termFreq=18.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0625 = fieldNorm(doc=2556)
        0.08738142 = weight(_text_:retrieval in 2556) [ClassicSimilarity], result of:
          0.08738142 = score(doc=2556,freq=18.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.8021017 = fieldWeight in 2556, product of:
              4.2426405 = tf(freq=18.0), with freq of:
                18.0 = termFreq=18.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0625 = fieldNorm(doc=2556)
      0.25 = coord(2/8)
    
    LCSH
    Information storage and retrieval systems / Evaluation
    RSWK
    Information Retrieval / Datenbankverwaltung / Hochschulschrift (GBV)
    Information Retrieval / Dialogsystem (SWB)
    Information Retrieval / Dialogsystem / Leistungsbewertung (BVB)
    Subject
    Information Retrieval / Datenbankverwaltung / Hochschulschrift (GBV)
    Information Retrieval / Dialogsystem (SWB)
    Information Retrieval / Dialogsystem / Leistungsbewertung (BVB)
    Information storage and retrieval systems / Evaluation
  5. Hüsken, P.: Informationssuche im Semantic Web : Methoden des Information Retrieval für die Wissensrepräsentation (2006) 0.03
    0.028180055 = product of:
      0.07514682 = sum of:
        0.016451614 = weight(_text_:information in 4332) [ClassicSimilarity], result of:
          0.016451614 = score(doc=4332,freq=10.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.2602176 = fieldWeight in 4332, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=4332)
        0.048847705 = weight(_text_:retrieval in 4332) [ClassicSimilarity], result of:
          0.048847705 = score(doc=4332,freq=10.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.44838852 = fieldWeight in 4332, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=4332)
        0.0098475 = product of:
          0.0295425 = sum of:
            0.0295425 = weight(_text_:29 in 4332) [ClassicSimilarity], result of:
              0.0295425 = score(doc=4332,freq=2.0), product of:
                0.1266875 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.036014426 = queryNorm
                0.23319192 = fieldWeight in 4332, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4332)
          0.33333334 = coord(1/3)
      0.375 = coord(3/8)
    
    Abstract
    Das Semantic Web bezeichnet ein erweitertes World Wide Web (WWW), das die Bedeutung von präsentierten Inhalten in neuen standardisierten Sprachen wie RDF Schema und OWL modelliert. Diese Arbeit befasst sich mit dem Aspekt des Information Retrieval, d.h. es wird untersucht, in wie weit Methoden der Informationssuche sich auf modelliertes Wissen übertragen lassen. Die kennzeichnenden Merkmale von IR-Systemen wie vage Anfragen sowie die Unterstützung unsicheren Wissens werden im Kontext des Semantic Web behandelt. Im Fokus steht die Suche nach Fakten innerhalb einer Wissensdomäne, die entweder explizit modelliert sind oder implizit durch die Anwendung von Inferenz abgeleitet werden können. Aufbauend auf der an der Universität Duisburg-Essen entwickelten Retrievalmaschine PIRE wird die Anwendung unsicherer Inferenz mit probabilistischer Prädikatenlogik (pDatalog) implementiert.
    Date
    12. 2.2011 17:29:27
    Footnote
    Zugl.: Dortmund, Univ., Dipl.-Arb., 2006 u.d.T.: Hüsken, Peter: Information-Retrieval im Semantic-Web.
    RSWK
    Information Retrieval / Semantic Web
    Subject
    Information Retrieval / Semantic Web
  6. TREC: experiment and evaluation in information retrieval (2005) 0.03
    0.026184592 = product of:
      0.06982558 = sum of:
        0.01187293 = weight(_text_:information in 636) [ClassicSimilarity], result of:
          0.01187293 = score(doc=636,freq=30.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.18779588 = fieldWeight in 636, product of:
              5.477226 = tf(freq=30.0), with freq of:
                30.0 = termFreq=30.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.01953125 = fieldNorm(doc=636)
        0.05384953 = weight(_text_:retrieval in 636) [ClassicSimilarity], result of:
          0.05384953 = score(doc=636,freq=70.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.49430186 = fieldWeight in 636, product of:
              8.3666 = tf(freq=70.0), with freq of:
                70.0 = termFreq=70.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.01953125 = fieldNorm(doc=636)
        0.0041031255 = product of:
          0.012309376 = sum of:
            0.012309376 = weight(_text_:29 in 636) [ClassicSimilarity], result of:
              0.012309376 = score(doc=636,freq=2.0), product of:
                0.1266875 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.036014426 = queryNorm
                0.097163305 = fieldWeight in 636, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.01953125 = fieldNorm(doc=636)
          0.33333334 = coord(1/3)
      0.375 = coord(3/8)
    
    Abstract
    The Text REtrieval Conference (TREC), a yearly workshop hosted by the US government's National Institute of Standards and Technology, provides the infrastructure necessary for large-scale evaluation of text retrieval methodologies. With the goal of accelerating research in this area, TREC created the first large test collections of full-text documents and standardized retrieval evaluation. The impact has been significant; since TREC's beginning in 1992, retrieval effectiveness has approximately doubled. TREC has built a variety of large test collections, including collections for such specialized retrieval tasks as cross-language retrieval and retrieval of speech. Moreover, TREC has accelerated the transfer of research ideas into commercial systems, as demonstrated in the number of retrieval techniques developed in TREC that are now used in Web search engines. This book provides a comprehensive review of TREC research, summarizing the variety of TREC results, documenting the best practices in experimental information retrieval, and suggesting areas for further research. The first part of the book describes TREC's history, test collections, and retrieval methodology. Next, the book provides "track" reports -- describing the evaluations of specific tasks, including routing and filtering, interactive retrieval, and retrieving noisy text. The final part of the book offers perspectives on TREC from such participants as Microsoft Research, University of Massachusetts, Cornell University, University of Waterloo, City University of New York, and IBM. The book will be of interest to researchers in information retrieval and related technologies, including natural language processing.
    Content
    Enthält die Beiträge: 1. The Text REtrieval Conference - Ellen M. Voorhees and Donna K. Harman 2. The TREC Test Collections - Donna K. Harman 3. Retrieval System Evaluation - Chris Buckley and Ellen M. Voorhees 4. The TREC Ad Hoc Experiments - Donna K. Harman 5. Routing and Filtering - Stephen Robertson and Jamie Callan 6. The TREC Interactive Tracks: Putting the User into Search - Susan T. Dumais and Nicholas J. Belkin 7. Beyond English - Donna K. Harman 8. Retrieving Noisy Text - Ellen M. Voorhees and John S. Garofolo 9.The Very Large Collection and Web Tracks - David Hawking and Nick Craswell 10. Question Answering in TREC - Ellen M. Voorhees 11. The University of Massachusetts and a Dozen TRECs - James Allan, W. Bruce Croft and Jamie Callan 12. How Okapi Came to TREC - Stephen Robertson 13. The SMART Project at TREC - Chris Buckley 14. Ten Years of Ad Hoc Retrieval at TREC Using PIRCS - Kui-Lam Kwok 15. MultiText Experiments for TREC - Gordon V. Cormack, Charles L. A. Clarke, Christopher R. Palmer and Thomas R. Lynam 16. A Language-Modeling Approach to TREC - Djoerd Hiemstra and Wessel Kraaij 17. BM Research Activities at TREC - Eric W. Brown, David Carmel, Martin Franz, Abraham Ittycheriah, Tapas Kanungo, Yoelle Maarek, J. Scott McCarley, Robert L. Mack, John M. Prager, John R. Smith, Aya Soffer, Jason Y. Zien and Alan D. Marwick Epilogue: Metareflections on TREC - Karen Sparck Jones
    Date
    29. 3.1996 18:16:49
    Footnote
    Rez. in: JASIST 58(2007) no.6, S.910-911 (J.L. Vicedo u. J. Gomez): "The Text REtrieval Conference (TREC) is a yearly workshop hosted by the U.S. government's National Institute of Standards and Technology (NIST) that fosters and supports research in information retrieval as well as speeding the transfer of technology between research labs and industry. Since 1992, TREC has provided the infrastructure necessary for large-scale evaluations of different text retrieval methodologies. TREC impact has been very important and its success has been mainly supported by its continuous adaptation to the emerging information retrieval needs. Not in vain, TREC has built evaluation benchmarks for more than 20 different retrieval problems such as Web retrieval, speech retrieval, or question-answering. The large and intense trajectory of annual TREC conferences has resulted in an immense bulk of documents reflecting the different eval uation and research efforts developed. This situation makes it difficult sometimes to observe clearly how research in information retrieval (IR) has evolved over the course of TREC. TREC: Experiment and Evaluation in Information Retrieval succeeds in organizing and condensing all this research into a manageable volume that describes TREC history and summarizes the main lessons learned. The book is organized into three parts. The first part is devoted to the description of TREC's origin and history, the test collections, and the evaluation methodology developed. The second part describes a selection of the major evaluation exercises (tracks), and the third part contains contributions from research groups that had a large and remarkable participation in TREC. Finally, Karen Spark Jones, one of the main promoters of research in IR, closes the book with an epilogue that analyzes the impact of TREC on this research field.
    ... TREC: Experiment and Evaluation in Information Retrieval is a reliable and comprehensive review of the TREC program and has been adopted by NIST as the official history of TREC (see http://trec.nist.gov). We were favorably surprised by the book. Well structured and written, chapters are self-contained and the existence of references to specialized and more detailed publications is continuous, which makes it easier to expand into the different aspects analyzed in the text. This book succeeds in compiling TREC evolution from its inception in 1992 to 2003 in an adequate and manageable volume. Thanks to the impressive effort performed by the authors and their experience in the field, it can satiate the interests of a great variety of readers. While expert researchers in the IR field and IR-related industrial companies can use it as a reference manual, it seems especially useful for students and non-expert readers willing to approach this research area. Like NIST, we would recommend this reading to anyone who may be interested in textual information retrieval."
    LCSH
    Information storage and retrieval systems / Congresses
    Text REtrieval Conference
    RSWK
    Information Retrieval / Textverarbeitung / Aufsatzsammlung (BVB)
    Kongress / Information Retrieval / Kongress (GBV)
    Subject
    Information Retrieval / Textverarbeitung / Aufsatzsammlung (BVB)
    Kongress / Information Retrieval / Kongress (GBV)
    Information storage and retrieval systems / Congresses
    Text REtrieval Conference
  7. Croft, W.B.; Metzler, D.; Strohman, T.: Search engines : information retrieval in practice (2010) 0.02
    0.023370693 = product of:
      0.09348277 = sum of:
        0.024401685 = weight(_text_:information in 2605) [ClassicSimilarity], result of:
          0.024401685 = score(doc=2605,freq=22.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.38596505 = fieldWeight in 2605, product of:
              4.690416 = tf(freq=22.0), with freq of:
                22.0 = termFreq=22.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=2605)
        0.06908108 = weight(_text_:retrieval in 2605) [ClassicSimilarity], result of:
          0.06908108 = score(doc=2605,freq=20.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.63411707 = fieldWeight in 2605, product of:
              4.472136 = tf(freq=20.0), with freq of:
                20.0 = termFreq=20.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=2605)
      0.25 = coord(2/8)
    
    Abstract
    For introductory information retrieval courses at the undergraduate and graduate level in computer science, information science and computer engineering departments. Written by a leader in the field of information retrieval, Search Engines: Information Retrieval in Practice, is designed to give undergraduate students the understanding and tools they need to evaluate, compare and modify search engines. Coverage of the underlying IR and mathematical models reinforce key concepts. The book's numerous programming exercises make extensive use of Galago, a Java-based open source search engine. SUPPLEMENTS / Extensive lecture slides (in PDF and PPT format) / Solutions to selected end of chapter problems (Instructors only) / Test collections for exercises / Galago search engine
    LCSH
    Information retrieval
    Information Storage and Retrieval
    RSWK
    Suchmaschine / Information Retrieval
    Subject
    Suchmaschine / Information Retrieval
    Information retrieval
    Information Storage and Retrieval
  8. Research and advanced technology for digital libraries : 7th European conference, ECDL2003 Trondheim, Norway, August 17-22, 2003. Proceedings (2003) 0.02
    0.02101968 = product of:
      0.05605248 = sum of:
        0.013873219 = weight(_text_:information in 2426) [ClassicSimilarity], result of:
          0.013873219 = score(doc=2426,freq=16.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.21943474 = fieldWeight in 2426, product of:
              4.0 = tf(freq=16.0), with freq of:
                16.0 = termFreq=16.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=2426)
        0.035673317 = weight(_text_:retrieval in 2426) [ClassicSimilarity], result of:
          0.035673317 = score(doc=2426,freq=12.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.32745665 = fieldWeight in 2426, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=2426)
        0.0065059434 = product of:
          0.01951783 = sum of:
            0.01951783 = weight(_text_:22 in 2426) [ClassicSimilarity], result of:
              0.01951783 = score(doc=2426,freq=2.0), product of:
                0.12611638 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.036014426 = 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)
      0.375 = coord(3/8)
    
    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
    RSWK
    Elektronische Bibliothek / Multimedia / Information Retrieval / Kongress / Trondheim <2003>
    World Wide Web / Elektronische Bibliothek / Information Retrieval / Kongress / Trondheim <2003>
    Subject
    Elektronische Bibliothek / Multimedia / Information Retrieval / Kongress / Trondheim <2003>
    World Wide Web / Elektronische Bibliothek / Information Retrieval / Kongress / Trondheim <2003>
  9. Research and advanced technology for digital libraries : 10th European conference ; proceedings / ECDL 2006, Alicante, Spain, September 17 - 22, 2006 ; proceedings (2006) 0.02
    0.021001978 = product of:
      0.056005273 = sum of:
        0.010967743 = weight(_text_:information in 2428) [ClassicSimilarity], result of:
          0.010967743 = score(doc=2428,freq=10.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.1734784 = fieldWeight in 2428, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=2428)
        0.038531587 = weight(_text_:retrieval in 2428) [ClassicSimilarity], result of:
          0.038531587 = score(doc=2428,freq=14.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.3536936 = fieldWeight in 2428, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=2428)
        0.0065059434 = product of:
          0.01951783 = sum of:
            0.01951783 = weight(_text_:22 in 2428) [ClassicSimilarity], result of:
              0.01951783 = score(doc=2428,freq=2.0), product of:
                0.12611638 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.036014426 = 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)
          0.33333334 = coord(1/3)
      0.375 = coord(3/8)
    
    Abstract
    This book constitutes the refereed proceedings of the 10th European Conference on Research and Advanced Technology for Digital Libraries, ECDL 2006, held in Alicante, Spain in September 2006. The 36 revised full papers presented together with the extended abstracts of 18 demo papers and 15 revised poster papers were carefully reviewed and selected from a total of 159 submissions. The papers are organized in topical sections on architectures, preservation, retrieval, applications, methodology, metadata, evaluation, user studies, modeling, audiovisual content, and language technologies.
    Content
    Inhalt u.a.: Architectures I Preservation Retrieval - The Use of Summaries in XML Retrieval / Zoltdn Szldvik, Anastasios Tombros, Mounia Laimas - An Enhanced Search Interface for Information Discovery from Digital Libraries / Georgia Koutrika, Alkis Simitsis - The TIP/Greenstone Bridge: A Service for Mobile Location-Based Access to Digital Libraries / Annika Hinze, Xin Gao, David Bainbridge Architectures II Applications Methodology Metadata Evaluation User Studies Modeling Audiovisual Content Language Technologies - Incorporating Cross-Document Relationships Between Sentences for Single Document Summarizations / Xiaojun Wan, Jianwu Yang, Jianguo Xiao - Semantic Web Techniques for Multiple Views on Heterogeneous Collections: A Case Study / Marjolein van Gendt, Antoine Isaac, Lourens van der Meij, Stefan Schlobach Posters - A Tool for Converting from MARC to FRBR / Trond Aalberg, Frank Berg Haugen, Ole Husby
    RSWK
    Elektronische Bibliothek / Multimedia / Information Retrieval / Kongress / Alicante <2006>
    World Wide Web / Elektronische Bibliothek / Information Retrieval / Kongress / Alicante <2006>
    Subject
    Elektronische Bibliothek / Multimedia / Information Retrieval / Kongress / Alicante <2006>
    World Wide Web / Elektronische Bibliothek / Information Retrieval / Kongress / Alicante <2006>
  10. Franke, F; Klein, A.; Schüller-Zwierlein, A.: Schlüsselkompetenzen : Literatur recherchieren in Bibliotheken und Internet (2010) 0.02
    0.02034483 = product of:
      0.054252878 = sum of:
        0.0120145595 = weight(_text_:information in 4721) [ClassicSimilarity], result of:
          0.0120145595 = score(doc=4721,freq=12.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.19003606 = fieldWeight in 4721, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=4721)
        0.035673317 = weight(_text_:retrieval in 4721) [ClassicSimilarity], result of:
          0.035673317 = score(doc=4721,freq=12.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.32745665 = fieldWeight in 4721, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=4721)
        0.0065650004 = product of:
          0.019695 = sum of:
            0.019695 = weight(_text_:29 in 4721) [ClassicSimilarity], result of:
              0.019695 = score(doc=4721,freq=2.0), product of:
                0.1266875 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.036014426 = queryNorm
                0.15546128 = fieldWeight in 4721, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.03125 = fieldNorm(doc=4721)
          0.33333334 = coord(1/3)
      0.375 = coord(3/8)
    
    Date
    29. 8.2011 12:21:48
    LCSH
    Information retrieval
    RSWK
    Information Retrieval / Bibliothek / Internet (BVB)
    Information Retrieval / Internet / Bibliothek / Lehrbuch (BVB)
    Subject
    Information Retrieval / Bibliothek / Internet (BVB)
    Information Retrieval / Internet / Bibliothek / Lehrbuch (BVB)
    Information retrieval
  11. Innovations in information retrieval : perspectives for theory and practice (2011) 0.02
    0.01882543 = product of:
      0.07530172 = sum of:
        0.020809827 = weight(_text_:information in 1757) [ClassicSimilarity], result of:
          0.020809827 = score(doc=1757,freq=36.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.3291521 = fieldWeight in 1757, product of:
              6.0 = tf(freq=36.0), with freq of:
                36.0 = termFreq=36.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=1757)
        0.054491892 = weight(_text_:retrieval in 1757) [ClassicSimilarity], result of:
          0.054491892 = score(doc=1757,freq=28.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.5001983 = fieldWeight in 1757, product of:
              5.2915025 = tf(freq=28.0), with freq of:
                28.0 = termFreq=28.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=1757)
      0.25 = coord(2/8)
    
    Abstract
    The advent of new information retrieval (IR) technologies and approaches to storage and retrieval provide communities with previously unheard of opportunities for mass documentation, digitization, and the recording of information in all its forms. This book introduces and contextualizes these developments and looks at supporting research in IR, the debates, theories and issues. Contributed by an international team of experts, each authored chapter provides a snapshot of changes in the field, as well as the importance of developing innovation, creativity and thinking in IR practice and research. Key discussion areas include: browsing in new information environments classification revisited: a web of knowledge approaches to fiction retrieval research music information retrieval research folksonomies, social tagging and information retrieval digital information interaction as semantic navigation assessing web search machines: a webometric approach. The questions raised are of significance to the whole international library and information science community, and this is essential reading for LIS professionals , researchers and students, and for all those interested in the future of IR.
    Content
    Inhalt: Bawden, D.: Encountering on the road to serendip? Browsing in new information environments. - Slavic, A.: Classification revisited: a web of knowledge. - Vernitski, A. u. P. Rafferty: Approaches to fiction retrieval research, from theory to practice? - Inskip, C.: Music information retrieval research. - Peters, I.: Folksonomies, social tagging and information retrieval. - Kopak, R., L. Freund u. H. O'Brien: Digital information interaction as semantic navigation. - Thelwall, M.: Assessing web search engines: a webometric approach
    Footnote
    Rez. in: Mitt VÖB 64(2911) H.3/4, S.547-553 (O. Oberhauser): "Dieser mit 156 Seiten (inklusive Register) relativ schmale Band enthält sieben mit dem Gütesiegel "peer-reviewed" versehene Beiträge namhafter Autoren zu "research fronts" auf dem Gebiet des Information Retrieval (IR) - ein Begriff, der hier durchaus breit verstanden wird. Wie die Herausgeber Allen Foster und Pauline Rafferty - beide aus dem Department of Information Studies an der Aberystwyth University (Wales) - in ihrer Einleitung betonen, sind Theorie und Praxis der Wissensorganisation im Internet- Zeitalter nicht mehr nur die Domäne von Informationswissenschaftlern und Bibliotheksfachleuten, sondern auch von Informatikern, Semantic-Web-Entwicklern und Wissensmanagern aus den verschiedensten Institutionen; neben das wissenschaftliche Interesse am Objektbereich ist nun auch das kommerzielle getreten. Die Verarbeitung von Massendaten, die Beschäftigung mit komplexen Medien und die Erforschung der Möglichkeiten zur Einbeziehung der Rezipienten sind insbesondere die Aspekte, um die es heute geht. ..." Weitere Rez. in: Library review 61(2012) no.3, S.233-235 (G. Macgregor); J. Doc. 69(2013) no.2, S.320-321 (J. Bates)
    LCSH
    Information retrieval / Technological innovations
    RSWK
    Information Retrieval
    Subject
    Information Retrieval
    Information retrieval / Technological innovations
  12. Grossman, D.A.; Frieder, O.: Information retrieval : algorithms and heuristics (2004) 0.02
    0.017375214 = product of:
      0.069500856 = sum of:
        0.016991155 = weight(_text_:information in 1486) [ClassicSimilarity], result of:
          0.016991155 = score(doc=1486,freq=24.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.2687516 = fieldWeight in 1486, product of:
              4.8989797 = tf(freq=24.0), with freq of:
                24.0 = termFreq=24.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=1486)
        0.052509703 = weight(_text_:retrieval in 1486) [ClassicSimilarity], result of:
          0.052509703 = score(doc=1486,freq=26.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.48200315 = fieldWeight in 1486, product of:
              5.0990195 = tf(freq=26.0), with freq of:
                26.0 = termFreq=26.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=1486)
      0.25 = coord(2/8)
    
    Abstract
    Interested in how an efficient search engine works? Want to know what algorithms are used to rank resulting documents in response to user requests? The authors answer these and other key information on retrieval design and implementation questions is provided. This book is not yet another high level text. Instead, algorithms are thoroughly described, making this book ideally suited for both computer science students and practitioners who work on search-related applications. As stated in the foreword, this book provides a current, broad, and detailed overview of the field and is the only one that does so. Examples are used throughout to illustrate the algorithms. The authors explain how a query is ranked against a document collection using either a single or a combination of retrieval strategies, and how an assortment of utilities are integrated into the query processing scheme to improve these rankings. Methods for building and compressing text indexes, querying and retrieving documents in multiple languages, and using parallel or distributed processing to expedite the search are likewise described. This edition is a major expansion of the one published in 1998. Neuaufl. 2005: Besides updating the entire book with current techniques, it includes new sections on language models, cross-language information retrieval, peer-to-peer processing, XML search, mediators, and duplicate document detection.
    LCSH
    Information storage and retrieval systems
    RSWK
    Algorithmus / Heuristik / Information Retrieval
    Information Retrieval / Theoretische Informatik (HBZ)
    Information Retrieval (BVB)
    Series
    Kluwer international series on information retrieval ; 15
    Subject
    Algorithmus / Heuristik / Information Retrieval
    Information Retrieval / Theoretische Informatik (HBZ)
    Information Retrieval (BVB)
    Information storage and retrieval systems
  13. Research and advanced technology for digital libraries : 11th European conference, ECDL 2007 / Budapest, Hungary, September 16-21, 2007, proceedings (2007) 0.02
    0.01685853 = product of:
      0.06743412 = sum of:
        0.021380065 = weight(_text_:information in 2430) [ClassicSimilarity], result of:
          0.021380065 = score(doc=2430,freq=38.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.33817163 = fieldWeight in 2430, product of:
              6.164414 = tf(freq=38.0), with freq of:
                38.0 = termFreq=38.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=2430)
        0.046054054 = weight(_text_:retrieval in 2430) [ClassicSimilarity], result of:
          0.046054054 = score(doc=2430,freq=20.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.42274472 = fieldWeight in 2430, product of:
              4.472136 = tf(freq=20.0), with freq of:
                20.0 = termFreq=20.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=2430)
      0.25 = coord(2/8)
    
    Abstract
    This book constitutes the refereed proceedings of the 11th European Conference on Research and Advanced Technology for Digital Libraries, ECDL 2007, held in Budapest, Hungary, in September 2007. The 36 revised full papers presented together with the extended abstracts of 36 revised poster, demo papers and 2 panel descriptions were carefully reviewed and selected from a total of 153 submissions. The papers are organized in topical sections on ontologies, digital libraries and the web, models, multimedia and multilingual DLs, grid and peer-to-peer, preservation, user interfaces, document linking, information retrieval, personal information management, new DL applications, and user studies.
    Content
    Inhalt u.a.: Ontologies - Ontology-Based Question Answering for Digital Libraries / Stephan Bloehdorn, Philipp Cimiano, Alistair Duke, Peter Haase, Jörg Heizmann, Ian Thurlow and Johanna Völker Digital libraries and the Web Models Multimedia and multilingual DLs - Roadmap for MultiLingual Information Access in the European Library / Maristella Agosti, Martin Braschler, Nicola Ferro, Carol Peters and Sjoerd Siebinga Grid and peer-to-peer Preservation User interfaces Document linking Information retrieval - Thesaurus-Based Feedback to Support Mixed Search and Browsing Environments / Edgar Meij and Maarten de Rijke - Extending Semantic Matching Towards Digital Library Contexts / László Kovács and András Micsik Personal information management New DL applications User studies
    LCSH
    Information storage and retrieval systems
    Information systems
    Information Storage and Retrieval
    Information Systems Applications (incl.Internet
    Multimedia Information Systems
    RSWK
    Elektronische Bibliothek / Multimedia / Information Retrieval / Kongress / Budapest <2007> / Online-Publikation
    World Wide Web / Elektronische Bibliothek / Information Retrieval / Kongress / Budapest <2007> / Online-Publikation
    Subject
    Elektronische Bibliothek / Multimedia / Information Retrieval / Kongress / Budapest <2007> / Online-Publikation
    World Wide Web / Elektronische Bibliothek / Information Retrieval / Kongress / Budapest <2007> / Online-Publikation
    Information storage and retrieval systems
    Information systems
    Information Storage and Retrieval
    Information Systems Applications (incl.Internet
    Multimedia Information Systems
  14. ¬The history and heritage of scientific and technological information systems : Proceedings of the 2002 Conference (2004) 0.02
    0.015789133 = product of:
      0.06315653 = sum of:
        0.019465812 = weight(_text_:information in 5897) [ClassicSimilarity], result of:
          0.019465812 = score(doc=5897,freq=14.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.3078936 = fieldWeight in 5897, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=5897)
        0.043690715 = weight(_text_:retrieval in 5897) [ClassicSimilarity], result of:
          0.043690715 = score(doc=5897,freq=8.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.40105087 = fieldWeight in 5897, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=5897)
      0.25 = coord(2/8)
    
    Content
    Enthält u.a. die Beiträge: Fugmann, R.: Learning the lessons of the past; Davis, C.H.: Indexing and index editing at Chemical Abstracts before the Registry System; Roe , E.M.: Abstracts and indexes to branded full text: what's in a name?; Lynch, M.F.: Introduction of computers in chemical structure information systems, or what is not recorded in the annals; Baatz, S.: Medical science and medical informatics: The visible human project, 1986-2000.
    Imprint
    Medford, NJ : Information Today
    LCSH
    Information storage and retrieval systems / Congresses / Science / History
    Information storage and retrieval systems / Congresses / Technology / History
    Subject
    Information storage and retrieval systems / Congresses / Science / History
    Information storage and retrieval systems / Congresses / Technology / History
  15. Multimedia content and the Semantic Web : methods, standards, and tools (2005) 0.02
    0.015697008 = product of:
      0.041858688 = sum of:
        0.0075091 = weight(_text_:information in 150) [ClassicSimilarity], result of:
          0.0075091 = score(doc=150,freq=12.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.11877254 = fieldWeight in 150, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.01953125 = fieldNorm(doc=150)
        0.027306695 = weight(_text_:retrieval in 150) [ClassicSimilarity], result of:
          0.027306695 = score(doc=150,freq=18.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.25065678 = fieldWeight in 150, product of:
              4.2426405 = tf(freq=18.0), with freq of:
                18.0 = termFreq=18.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.01953125 = fieldNorm(doc=150)
        0.0070428904 = product of:
          0.021128671 = sum of:
            0.021128671 = weight(_text_:22 in 150) [ClassicSimilarity], result of:
              0.021128671 = score(doc=150,freq=6.0), product of:
                0.12611638 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.036014426 = queryNorm
                0.16753313 = fieldWeight in 150, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.01953125 = fieldNorm(doc=150)
          0.33333334 = coord(1/3)
      0.375 = coord(3/8)
    
    Classification
    006.7 22
    Date
    7. 3.2007 19:30:22
    DDC
    006.7 22
    Footnote
    Rez. in: JASIST 58(2007) no.3, S.457-458 (A.M.A. Ahmad): "The concept of the semantic web has emerged because search engines and text-based searching are no longer adequate, as these approaches involve an extensive information retrieval process. The deployed searching and retrieving descriptors arc naturally subjective and their deployment is often restricted to the specific application domain for which the descriptors were configured. The new era of information technology imposes different kinds of requirements and challenges. Automatic extracted audiovisual features are required, as these features are more objective, domain-independent, and more native to audiovisual content. This book is a useful guide for researchers, experts, students, and practitioners; it is a very valuable reference and can lead them through their exploration and research in multimedia content and the semantic web. The book is well organized, and introduces the concept of the semantic web and multimedia content analysis to the reader through a logical sequence from standards and hypotheses through system examples, presenting relevant tools and methods. But in some chapters readers will need a good technical background to understand some of the details. Readers may attain sufficient knowledge here to start projects or research related to the book's theme; recent results and articles related to the active research area of integrating multimedia with semantic web technologies are included. This book includes full descriptions of approaches to specific problem domains such as content search, indexing, and retrieval. This book will be very useful to researchers in the multimedia content analysis field who wish to explore the benefits of emerging semantic web technologies in applying multimedia content approaches. The first part of the book covers the definition of the two basic terms multimedia content and semantic web. The Moving Picture Experts Group standards MPEG7 and MPEG21 are quoted extensively. In addition, the means of multimedia content description are elaborated upon and schematically drawn. This extensive description is introduced by authors who are actively involved in those standards and have been participating in the work of the International Organization for Standardization (ISO)/MPEG for many years. On the other hand, this results in bias against the ad hoc or nonstandard tools for multimedia description in favor of the standard approaches. This is a general book for multimedia content; more emphasis on the general multimedia description and extraction could be provided.
    The final part of the book discusses research in multimedia content management systems and the semantic web, and presents examples and applications for semantic multimedia analysis in search and retrieval systems. These chapters describe example systems in which current projects have been implemented, and include extensive results and real demonstrations. For example, real case scenarios such as ECommerce medical applications and Web services have been introduced. Topics in natural language, speech and image processing techniques and their application for multimedia indexing, and content-based retrieval have been elaborated upon with extensive examples and deployment methods. The editors of the book themselves provide the readers with a chapter about their latest research results on knowledge-based multimedia content indexing and retrieval. Some interesting applications for multimedia content and the semantic web are introduced. Applications that have taken advantage of the metadata provided by MPEG7 in order to realize advance-access services for multimedia content have been provided. The applications discussed in the third part of the book provide useful guidance to researchers and practitioners properly planning to implement semantic multimedia analysis techniques in new research and development projects in both academia and industry. A fourth part should be added to this book: performance measurements for integrated approaches of multimedia analysis and the semantic web. Performance of the semantic approach is a very sophisticated issue and requires extensive elaboration and effort. Measuring the semantic search is an ongoing research area; several chapters concerning performance measurement and analysis would be required to adequately cover this area and introduce it to readers."
    LCSH
    Information storage and retrieval systems
    RSWK
    Semantic Web / Multimedia / Automatische Indexierung / Information Retrieval
    Subject
    Semantic Web / Multimedia / Automatische Indexierung / Information Retrieval
    Information storage and retrieval systems
  16. Glöckner-Rist, A.: Suchfragen im Information Retrieval : eine empirische Untersuchung zum Rechercheverhalten von Informationsvermittlern und Endbenutzern (1992) 0.02
    0.015391196 = product of:
      0.061564784 = sum of:
        0.01551073 = weight(_text_:information in 1602) [ClassicSimilarity], result of:
          0.01551073 = score(doc=1602,freq=20.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.2453355 = fieldWeight in 1602, product of:
              4.472136 = tf(freq=20.0), with freq of:
                20.0 = termFreq=20.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=1602)
        0.046054054 = weight(_text_:retrieval in 1602) [ClassicSimilarity], result of:
          0.046054054 = score(doc=1602,freq=20.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.42274472 = fieldWeight in 1602, product of:
              4.472136 = tf(freq=20.0), with freq of:
                20.0 = termFreq=20.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=1602)
      0.25 = coord(2/8)
    
    Abstract
    Das Information Retrieval steht in theoretischer und praktischer Hinsicht im Zentrum der Informationswissenschaft. Das Buch vereinigt beide Bereiche, indem es seinen praktischen Ausgang von realen Situationen der Online-Informationsvermittlung nimmt und zugleich einen wichtigen Beitrag zu einer Theorie der Frageformulierung in Information Retrieval an sich leistet. Mit 'realen Situationen' sind mitprotokollierte Online-Sitzungen bzw. CD-ROM Recherchen gemeint. Diese Recherchen wurden teils kooperativ, d.h. zusammen mit den Endbenutzern, oder nicht-kooperativ, d.h. alleine von professionellen Informationsvermittlern, durchgeführt und in der Arbeit ausgewertet. Die Studie ist damit der sog. verhaltensanalytischen Richtung des Information Retrieval zuzurechnen
    RSWK
    Information Retrieval / Fragetechnik (GBV)
    Information Retrieval (BVB)
    Information Retrieval / Benutzer / Informationsvermittlung (BVB)
    Subject
    Information Retrieval / Fragetechnik (GBV)
    Information Retrieval (BVB)
    Information Retrieval / Benutzer / Informationsvermittlung (BVB)
  17. Koch, J.H.: Unterstützung der Formierung und Analyse von virtuellen Communities (2003) 0.02
    0.015261057 = product of:
      0.122088455 = sum of:
        0.122088455 = weight(_text_:modell in 797) [ClassicSimilarity], result of:
          0.122088455 = score(doc=797,freq=4.0), product of:
            0.21656582 = queryWeight, product of:
              6.0133076 = idf(docFreq=293, maxDocs=44218)
              0.036014426 = queryNorm
            0.5637476 = fieldWeight in 797, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.0133076 = idf(docFreq=293, maxDocs=44218)
              0.046875 = fieldNorm(doc=797)
      0.125 = coord(1/8)
    
    Abstract
    Systeme, die den Informationsaustausch in Communities unterstützen, sind heute allgegenwärtig. Eine zielgerichtete Analyse solcher Communities ist allerdings nur schwer möglich, denn es gibt bislang kein Verfahren zur formalen Beschreibung virtueller Communities, auf dem aufbauend eine Analyse stattfinden könnte. Es wird ein Konzept vorgestellt, das die Brücke schlägt zwischen den natürlichsprachlichen Beschreibungen von virtuellen Communities in der Soziologie und der Psychologie, und einer formalen Beschreibung, wie sie für die zielgerichtete Software-Entwicklung nötig ist. Neben einem formalen Modell von virtuellen Communities wird ein komponentenbasierter Ansatz vorgestellt, der beschreibt, wie mit diesem Modell gezielt Unterstützungs- und Analysesysteme entwickelt werden können.
  18. Lavrenko, V.: ¬A generative theory of relevance (2009) 0.02
    0.01520329 = product of:
      0.06081316 = sum of:
        0.01622151 = weight(_text_:information in 3306) [ClassicSimilarity], result of:
          0.01622151 = score(doc=3306,freq=14.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.256578 = fieldWeight in 3306, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3306)
        0.044591647 = weight(_text_:retrieval in 3306) [ClassicSimilarity], result of:
          0.044591647 = score(doc=3306,freq=12.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.40932083 = fieldWeight in 3306, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3306)
      0.25 = coord(2/8)
    
    Abstract
    A modern information retrieval system must have the capability to find, organize and present very different manifestations of information - such as text, pictures, videos or database records - any of which may be of relevance to the user. However, the concept of relevance, while seemingly intuitive, is actually hard to define, and it's even harder to model in a formal way. Lavrenko does not attempt to bring forth a new definition of relevance, nor provide arguments as to why any particular definition might be theoretically superior or more complete. Instead, he takes a widely accepted, albeit somewhat conservative definition, makes several assumptions, and from them develops a new probabilistic model that explicitly captures that notion of relevance. With this book, he makes two major contributions to the field of information retrieval: first, a new way to look at topical relevance, complementing the two dominant models, i.e., the classical probabilistic model and the language modeling approach, and which explicitly combines documents, queries, and relevance in a single formalism; second, a new method for modeling exchangeable sequences of discrete random variables which does not make any structural assumptions about the data and which can also handle rare events. Thus his book is of major interest to researchers and graduate students in information retrieval who specialize in relevance modeling, ranking algorithms, and language modeling.
    RSWK
    Relevanz-Feedback / Information Retrieval
    Series
    The information retrieval series ; 26
    Subject
    Relevanz-Feedback / Information Retrieval
  19. Colomb, R.M.: Information spaces : the architecture of cyberspace (2002) 0.01
    0.014837401 = product of:
      0.059349604 = sum of:
        0.022940679 = weight(_text_:information in 262) [ClassicSimilarity], result of:
          0.022940679 = score(doc=262,freq=28.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.3628561 = fieldWeight in 262, product of:
              5.2915025 = tf(freq=28.0), with freq of:
                28.0 = termFreq=28.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0390625 = fieldNorm(doc=262)
        0.036408927 = weight(_text_:retrieval in 262) [ClassicSimilarity], result of:
          0.036408927 = score(doc=262,freq=8.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.33420905 = fieldWeight in 262, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0390625 = fieldNorm(doc=262)
      0.25 = coord(2/8)
    
    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 technology
    Information retrieval
    Information resources management
    RSWK
    Information Engineering / Lehrbuch
    Information Retrieval / Lehrbuch
    Subject
    Information Engineering / Lehrbuch
    Information Retrieval / Lehrbuch
    Information technology
    Information retrieval
    Information resources management
  20. Tunkelang, D.: Faceted search (2009) 0.01
    0.014545789 = product of:
      0.058183156 = sum of:
        0.016991155 = weight(_text_:information in 26) [ClassicSimilarity], result of:
          0.016991155 = score(doc=26,freq=24.0), product of:
            0.06322253 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.036014426 = queryNorm
            0.2687516 = fieldWeight in 26, product of:
              4.8989797 = tf(freq=24.0), with freq of:
                24.0 = termFreq=24.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=26)
        0.041192 = weight(_text_:retrieval in 26) [ClassicSimilarity], result of:
          0.041192 = score(doc=26,freq=16.0), product of:
            0.10894058 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.036014426 = queryNorm
            0.37811437 = fieldWeight in 26, product of:
              4.0 = tf(freq=16.0), with freq of:
                16.0 = termFreq=16.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=26)
      0.25 = coord(2/8)
    
    Abstract
    We live in an information age that requires us, more than ever, to represent, access, and use information. Over the last several decades, we have developed a modern science and technology for information retrieval, relentlessly pursuing the vision of a "memex" that Vannevar Bush proposed in his seminal article, "As We May Think." Faceted search plays a key role in this program. Faceted search addresses weaknesses of conventional search approaches and has emerged as a foundation for interactive information retrieval. User studies demonstrate that faceted search provides more effective information-seeking support to users than best-first search. Indeed, faceted search has become increasingly prevalent in online information access systems, particularly for e-commerce and site search. In this lecture, we explore the history, theory, and practice of faceted search. Although we cannot hope to be exhaustive, our aim is to provide sufficient depth and breadth to offer a useful resource to both researchers and practitioners. Because faceted search is an area of interest to computer scientists, information scientists, interface designers, and usability researchers, we do not assume that the reader is a specialist in any of these fields. Rather, we offer a self-contained treatment of the topic, with an extensive bibliography for those who would like to pursue particular aspects in more depth.
    Content
    Table of Contents: I. Key Concepts / Introduction: What Are Facets? / Information Retrieval / Faceted Information Retrieval / II. Research and Practice / Academic Research / Commercial Applications / III. Practical Concerns / Back-End Concerns / Front-End Concerns / Conclusion / Glossary
    RSWK
    Information Retrieval
    Series
    Synthesis lectures on information concepts, retrieval & services; 5
    Subject
    Information Retrieval
    Theme
    Klassifikationssysteme im Online-Retrieval

Years

Languages

  • e 44
  • d 29

Types

  • m 71
  • s 24
  • i 2
  • el 1
  • r 1
  • More… Less…

Subjects

Classifications