Search (224 results, page 1 of 12)

0.14804515 = product of:
  0.22206771 = sum of:
    0.10735885 = weight(_text_:search in 6052) [ClassicSimilarity], result of:
      0.10735885 = score(doc=6052,freq=8.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.6144187 = fieldWeight in 6052, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0625 = fieldNorm(doc=6052)
    0.11470887 = product of:
      0.22941774 = sum of:
        0.22941774 = weight(_text_:engines in 6052) [ClassicSimilarity], result of:
          0.22941774 = score(doc=6052,freq=8.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.8981709 = fieldWeight in 6052, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0625 = fieldNorm(doc=6052)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

Enthält neben allgemeinen Kapiteln (Serach engines in general - Common search options) eine Besprechung der einzelnen Suchmaschinen und ihrer Charakteristika

LCSH

Web search engines

Subject

Web search engines

0.11052248 = product of:
  0.16578372 = sum of:
    0.1299372 = weight(_text_:search in 0) [ClassicSimilarity], result of:
      0.1299372 = score(doc=0,freq=30.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.7436354 = fieldWeight in 0, product of:
          5.477226 = tf(freq=30.0), with freq of:
            30.0 = termFreq=30.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0390625 = fieldNorm(doc=0)
    0.03584652 = product of:
      0.07169304 = sum of:
        0.07169304 = weight(_text_:engines in 0) [ClassicSimilarity], result of:
          0.07169304 = score(doc=0,freq=2.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.2806784 = fieldWeight in 0, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0390625 = fieldNorm(doc=0)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

As information becomes more ubiquitous and the demands that searchers have on search systems grow, there is a need to support search behaviors beyond simple lookup. Information seeking is the process or activity of attempting to obtain information in both human and technological contexts. Exploratory search describes an information-seeking problem context that is open-ended, persistent, and multifaceted, and information-seeking processes that are opportunistic, iterative, and multitactical. Exploratory searchers aim to solve complex problems and develop enhanced mental capacities. Exploratory search systems support this through symbiotic human-machine relationships that provide guidance in exploring unfamiliar information landscapes. Exploratory search has gained prominence in recent years. There is an increased interest from the information retrieval, information science, and human-computer interaction communities in moving beyond the traditional turn-taking interaction model supported by major Web search engines, and toward support for human intelligence amplification and information use. In this lecture, we introduce exploratory search, relate it to relevant extant research, outline the features of exploratory search systems, discuss the evaluation of these systems, and suggest some future directions for supporting exploratory search. Exploratory search is a new frontier in the search domain and is becoming increasingly important in shaping our future world.

Content

Table of Contents: Introduction / Defining Exploratory Search / Related Work / Features of Exploratory Search Systems / Evaluation of Exploratory Search Systems / Future Directions and concluding Remarks

0.10468617 = product of:
  0.15702926 = sum of:
    0.10735885 = weight(_text_:search in 4029) [ClassicSimilarity], result of:
      0.10735885 = score(doc=4029,freq=32.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.6144187 = fieldWeight in 4029, product of:
          5.656854 = tf(freq=32.0), with freq of:
            32.0 = termFreq=32.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=4029)
    0.049670402 = product of:
      0.099340804 = sum of:
        0.099340804 = weight(_text_:engines in 4029) [ClassicSimilarity], result of:
          0.099340804 = score(doc=4029,freq=6.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.38891944 = fieldWeight in 4029, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=4029)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

This book outlines the human side of the information seeking process, and focuses on the aspects of this process that can best be supported by the user interface. It describes the methods behind user interface design generally, and search interface design in particular, with an emphasis on how best to evaluate search interfaces. It discusses research results and current practices surrounding user interfaces for query specification, display of retrieval results, grouping retrieval results, navigation of information collections, query reformulation, search personalization, and the broader tasks of sensemaking and text analysis. Much of the discussion pertains to Web search engines, but the book also covers the special considerations surrounding search of other information collections.

Content

Inhalt: The design of search user interfaces -- The evaluation of search user interfaces -- Models of the information seeking process -- Query specification -- Presentation of search results -- Query reformulation -- Supporting the search process -- Integrating navigation with search -- Personalization in search -- Information visualization for search interfaces -- Information visualization for text analysis -- Emerging trends in search interfaces. Vgl. die digitale Fassung unter: http://searchuserinterfaces.com.

LCSH

Web search engines

Subject

Web search engines

0.10057114 = product of:
  0.1508567 = sum of:
    0.09002314 = weight(_text_:search in 3185) [ClassicSimilarity], result of:
      0.09002314 = score(doc=3185,freq=10.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.51520574 = fieldWeight in 3185, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.046875 = fieldNorm(doc=3185)
    0.060833566 = product of:
      0.12166713 = sum of:
        0.12166713 = weight(_text_:engines in 3185) [ClassicSimilarity], result of:
          0.12166713 = score(doc=3185,freq=4.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.47632706 = fieldWeight in 3185, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.046875 = fieldNorm(doc=3185)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

With this title, readers learn to push the search engine to its limits and extract the best content from Google, without having to learn complicated code. "Google Power" takes Google users under the hood, and teaches them a wide range of advanced web search techniques, through practical examples. Its content is organised by topic, so reader learns how to conduct in-depth searches on the most popular search topics, from health to government listings to people.

LCSH

Web search engines

Subject

Web search engines

0.097439155 = product of:
  0.14615873 = sum of:
    0.075914174 = weight(_text_:search in 7) [ClassicSimilarity], result of:
      0.075914174 = score(doc=7,freq=16.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.43445963 = fieldWeight in 7, product of:
          4.0 = tf(freq=16.0), with freq of:
            16.0 = termFreq=16.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=7)
    0.07024455 = product of:
      0.1404891 = sum of:
        0.1404891 = weight(_text_:engines in 7) [ClassicSimilarity], result of:
          0.1404891 = score(doc=7,freq=12.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.5500151 = fieldWeight in 7, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=7)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

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

LCSH

Web search engines

Subject

Web search engines

0.097439155 = product of:
  0.14615873 = sum of:
    0.075914174 = weight(_text_:search in 3346) [ClassicSimilarity], result of:
      0.075914174 = score(doc=3346,freq=16.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.43445963 = fieldWeight in 3346, product of:
          4.0 = tf(freq=16.0), with freq of:
            16.0 = termFreq=16.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=3346)
    0.07024455 = product of:
      0.1404891 = sum of:
        0.1404891 = weight(_text_:engines in 3346) [ClassicSimilarity], result of:
          0.1404891 = score(doc=3346,freq=12.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.5500151 = fieldWeight in 3346, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=3346)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

The World Wide Web is rapidly filling with more text than anyone could have imagined even a short time ago, but the task of isolating relevant parts of this vast information has become just that much more daunting. Richard Belew brings a cognitive perspective to the study of information retrieval as a discipline within computer science. He introduces the idea of Finding Out About (FDA) as the process of actively seeking out information relevant to a topic of interest and describes its many facets - ranging from creating a good characterization of what the user seeks, to what documents actually mean, to methods of inferring semantic clues about each document, to the problem of evaluating whether our search engines are performing as we have intended. Finding Out About explains how to build the tools that are useful for searching collections of text and other media. In the process it takes a close look at the properties of textual documents that do not become clear until very large collections of them are brought together and shows that the construction of effective search engines requires knowledge of the statistical and mathematical properties of linguistic phenomena, as well as an appreciation for the cognitive foundation we bring to the task as language users. The unique approach of this book is its even handling of the phenomena of both numbers and words, making it accessible to a wide audience. The textbook is usable in both undergraduate and graduate classes on information retrieval, library science, and computational linguistics. The text is accompanied by a CD-ROM that contains a hypertext version of the book, including additional topics and notes not present in the printed edition. In addition, the CD contains the full text of C.J. "Keith" van Rijsbergen's famous textbook, Information Retrieval (now out of print). Many active links from Belew's to van Rijsbergen's hypertexts help to unite the material. Several test corpora and indexing tools are provided, to support the design of your own search engine. Additional exercises using these corpora and code are available to instructors. Also supporting this book is a Web site that will include recent additions to the book, as well as links to sites of new topics and methods.

LCSH

Search engines / Programming
Web search engines

Subject

Search engines / Programming
Web search engines

0.08902081 = product of:
  0.13353121 = sum of:
    0.0929755 = weight(_text_:search in 26) [ClassicSimilarity], result of:
      0.0929755 = score(doc=26,freq=24.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.5321022 = fieldWeight in 26, product of:
          4.8989797 = tf(freq=24.0), with freq of:
            24.0 = termFreq=24.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=26)
    0.04055571 = product of:
      0.08111142 = sum of:
        0.08111142 = weight(_text_:engines in 26) [ClassicSimilarity], result of:
          0.08111142 = score(doc=26,freq=4.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.31755137 = fieldWeight in 26, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=26)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

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.

LCSH

Web search engines / Research

Subject

Web search engines / Research

0.088845745 = product of:
  0.13326861 = sum of:
    0.075914174 = weight(_text_:search in 1468) [ClassicSimilarity], result of:
      0.075914174 = score(doc=1468,freq=4.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.43445963 = fieldWeight in 1468, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0625 = fieldNorm(doc=1468)
    0.057354435 = product of:
      0.11470887 = sum of:
        0.11470887 = weight(_text_:engines in 1468) [ClassicSimilarity], result of:
          0.11470887 = score(doc=1468,freq=2.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.44908544 = fieldWeight in 1468, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0625 = fieldNorm(doc=1468)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

This comprehensive volume offers usable information for people at all levels of Internet savvy. It can teach librarians, students, and patrons how to search the Internet more systematically. It also helps information professionals design more efficient, effective search engines and Web pages.

0.07852928 = product of:
  0.11779392 = sum of:
    0.06709928 = weight(_text_:search in 62) [ClassicSimilarity], result of:
      0.06709928 = score(doc=62,freq=8.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.3840117 = fieldWeight in 62, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0390625 = fieldNorm(doc=62)
    0.05069464 = product of:
      0.10138928 = sum of:
        0.10138928 = weight(_text_:engines in 62) [ClassicSimilarity], result of:
          0.10138928 = score(doc=62,freq=4.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.39693922 = fieldWeight in 62, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0390625 = fieldNorm(doc=62)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

Enormous expanses of the Internet are unreachable with standard Web search engines. This book provides the key to finding these hidden resources by identifying how to uncover and use invisible Web resources. Mapping the invisible Web, when and how to use it, assessing the validity of the information, and the future of Web searching are topics covered in detail. Only 16 percent of Net-based information can be located using a general search engine. The other 84 percent is what is referred to as the invisible Web-made up of information stored in databases. Unlike pages on the visible Web, information in databases is generally inaccessible to the software spiders and crawlers that compile search engine indexes. As Web technology improves, more and more information is being stored in databases that feed into dynamically generated Web pages. The tips provided in this resource will ensure that those databases are exposed and Net-based research will be conducted in the most thorough and effective manner. Discusses the use of online information resources and problems caused by dynamically generated Web pages, paying special attention to information mapping, assessing the validity of information, and the future of Web searching.

0.07478216 = product of:
  0.11217324 = sum of:
    0.04025957 = weight(_text_:search in 201) [ClassicSimilarity], result of:
      0.04025957 = score(doc=201,freq=8.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.230407 = fieldWeight in 201, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0234375 = fieldNorm(doc=201)
    0.07191367 = sum of:
      0.043015826 = weight(_text_:engines in 201) [ClassicSimilarity], result of:
        0.043015826 = score(doc=201,freq=2.0), product of:
          0.25542772 = queryWeight, product of:
            5.080822 = idf(docFreq=746, maxDocs=44218)
            0.05027291 = queryNorm
          0.16840704 = fieldWeight in 201, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.080822 = idf(docFreq=746, maxDocs=44218)
            0.0234375 = fieldNorm(doc=201)
      0.028897839 = weight(_text_:22 in 201) [ClassicSimilarity], result of:
        0.028897839 = score(doc=201,freq=4.0), product of:
          0.17604718 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05027291 = queryNorm
          0.16414827 = fieldWeight in 201, 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=201)
  0.6666667 = coord(2/3)

Classification

025.04071 / 22

Content

Web searching and the teaching paradox -- Understanding our audience -- Choosing the instructional session types -- Online tutorials : friend or foe? -- Organization : focus, length, and goals -- Terminology -- Content : Web search features -- Content : primary concepts -- Additional content : image searching, news, usenet, and more -- The search engines -- Creating a framed workshop Web page -- Presentation tips, tricks, and shortcuts -- Tales from the trenches : anecdotes, examples, and exercises.

DDC

025.04071 / 22

Footnote

Rez. in: Online-Mitteilungen 2007, H.89, S.17-18 (M. Katzmayr): "Eine der Herausforderungen, der sich Web-Trainerinnen regelmäßig ausgesetzt sehen, besteht in der Kurzlebigkeit der Recherchetools und ihrer ständig wechselnden Funktionalitäten. Wer spricht heute noch von den Suchmaschinen AltaVista oder Lycos? (Hoffentlich) niemand mehr. Diese Dynamik in der Internetbranche wirkt allerdings auf viele potentielle Vortragende abschreckend, scheint es doch ein unzumutbarer Aufwand zu sein, sich laufend über neue Entwicklungen zu informieren. Wer darunter leidet oder zum ersten Mal eine Webschulung vorbereitet, sollte einen Blick in das vorliegende Buch werfen. Dessen Autor, Greg. R. Notess ist im Bereich des praktischen Web Information Retrieval kein Unbekannter: der Auskunftsbibliothekar an der Montana State University hat sich als Betreiber der Website Search Engine Showdown (http://www.search engineshowdown.com), vielgereister Vortragender, erfahrener Didaktiker und regelmäßiger Autor der Zeitschrift Online einen exzellenten Ruf in der Internet-Gemeinde erworben. Nun liegen seine Kenntnisse zur Vermittlung der Webrecherche auch als Monographie vor, die sich an Leiterinnen von Webschulungen richtet. Zum einen finden sich darin eine Vielzahl an didaktischen und organisatorischen Hinweisen zur Planung und Durchführung von Webschulungen. So werden z.B. die verschiedenen Typen von Kursteilnehmerinnen beschrieben und welchen Problemen sich Anfängerinnen in der Webrecherche in der Regel gegenübersehen. Es werden die verschiedenen Arten von Schulungen (Frontalvorträge, Schulungen mit Übungsmöglichkeiten und Online-Tutorials) mit ihren jeweiligen Vor- und Nachteilen sowie idealtypischen Einsatzmöglichkeiten dargestellt, weiters werden Hinweise zu Zielsetzungen und Länge von Kursen gegeben.

0.07437795 = product of:
  0.111566916 = sum of:
    0.07101121 = weight(_text_:search in 4127) [ClassicSimilarity], result of:
      0.07101121 = score(doc=4127,freq=14.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.4063998 = fieldWeight in 4127, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=4127)
    0.04055571 = product of:
      0.08111142 = sum of:
        0.08111142 = weight(_text_:engines in 4127) [ClassicSimilarity], result of:
          0.08111142 = score(doc=4127,freq=4.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.31755137 = fieldWeight in 4127, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=4127)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Content

Inhalt Collaborating to search effectively in different searcher modes through cues and specialty search / Naresh Kumar Agarwal and Danny C.C. Poo -- Collaborative querying using a hybrid content and results-based approach / Chandrani Sinha Ray ... [et al.] -- Collaborative classification for group-oriented organization of search results / Keiichi Nakata and Amrish Singh -- A case study of use-centered descriptions : archival descriptions of what can be done with a collection / Richard Butterworth -- Metadata for social recommendations : storing, sharing, and reusing evaluations of learning resources / Riina Vuorikari, Nikos Manouselis, and Erik Duval -- Social network models for enhancing reference-based search engine rankings / Nikolaos Korfiatis ... [et al.] -- From PageRank to social rank : authority-based retrieval in social information spaces / Sebastian Marius Kirsch ... [et al.] -- Adaptive peer-to-peer social networks for distributed content-based Web search / Le-Shin Wu ... [et al.] -- The ethics of social information retrieval / Brendan Luyt and Chu Keong Lee -- The social context of knowledge / Daniel Memmi -- Social information seeking in digital libraries / George Buchanan and Annika Hinze -- Relevant intra-actions in networked environments / Theresa Dirndorfer Anderson -- Publication and citation analysis as a tool for information retrieval / Ronald Rousseau -- Personalized information retrieval in a semantic-based learning environment / Antonella Carbonaro and Rodolfo Ferrini -- Multi-agent tourism system (MATS) / Soe Yu Maw and Myo-Myo Naing -- Hybrid recommendation systems : a case study on the movies domain / Konstantinos Markellos ... [et al.].

LCSH

Web search engines

Subject

Web search engines

0.074022576 = product of:
  0.11103386 = sum of:
    0.053679425 = weight(_text_:search in 1160) [ClassicSimilarity], result of:
      0.053679425 = score(doc=1160,freq=8.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.30720934 = fieldWeight in 1160, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=1160)
    0.057354435 = product of:
      0.11470887 = sum of:
        0.11470887 = weight(_text_:engines in 1160) [ClassicSimilarity], result of:
          0.11470887 = score(doc=1160,freq=8.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.44908544 = fieldWeight in 1160, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=1160)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

LCSH

Search engines / History
Web search engines / Social aspects

Subject

Search engines / History
Web search engines / Social aspects

0.072797574 = product of:
  0.10919636 = sum of:
    0.08051914 = weight(_text_:search in 5941) [ClassicSimilarity], result of:
      0.08051914 = score(doc=5941,freq=18.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.460814 = fieldWeight in 5941, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=5941)
    0.028677218 = product of:
      0.057354435 = sum of:
        0.057354435 = weight(_text_:engines in 5941) [ClassicSimilarity], result of:
          0.057354435 = score(doc=5941,freq=2.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.22454272 = fieldWeight in 5941, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=5941)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

If you pick your books by their popularity--how many and which other people are reading them--then know this about The Search: it's probably on Bill Gates' reading list, and that of almost every venture capitalist and startup-hungry entrepreneur in Silicon Valley. In its sweeping survey of the history of Internet search technologies, its gossip about and analysis of Google, and its speculation on the larger cultural implications of a Web-connected world, it will likely receive attention from a variety of businesspeople, technology futurists, journalists, and interested observers of mid-2000s zeitgeist. This ambitious book comes with a strong pedigree. Author John Battelle was a founder of The Industry Standard and then one of the original editors of Wired, two magazines which helped shape our early perceptions of the wild world of the Internet. Battelle clearly drew from his experience and contacts in writing The Search. In addition to the sure-handed historical perspective and easy familiarity with such dot-com stalwarts as AltaVista, Lycos, and Excite, he speckles his narrative with conversational asides from a cast of fascinating characters, such Google's founders, Larry Page and Sergey Brin; Yahoo's, Jerry Yang and David Filo; key executives at Microsoft and different VC firms on the famed Sandhill road; and numerous other insiders, particularly at the company which currently sits atop the search world, Google. The Search is not exactly the corporate history of Google. At the book's outset, Battelle specifically indicates his desire to understand what he calls the cultural anthropology of search, and to analyze search engines' current role as the "database of our intentions"--the repository of humanity's curiosity, exploration, and expressed desires. Interesting though that beginning is, though, Battelle's story really picks up speed when he starts dishing inside scoop on the darling business story of the decade, Google. To Battelle's credit, though, he doesn't stop just with historical retrospective: the final part of his book focuses on the potential future directions of Google and its products' development. In what Battelle himself acknowledges might just be a "digital fantasy train", he describes the possibility that Google will become the centralizing platform for our entire lives and quotes one early employee on the weightiness of Google's potential impact: "Sometimes I feel like I am on a bridge, twenty thousand feet up in the air. If I look down I'm afraid I'll fall. I don't feel like I can think about all the implications." Some will shrug at such words; after all, similar hype has accompanied other technologies and other companies before. Many others, though, will search Battelle's story for meaning--and fast.

0.06893679 = product of:
  0.10340518 = sum of:
    0.06038935 = weight(_text_:search in 1813) [ClassicSimilarity], result of:
      0.06038935 = score(doc=1813,freq=18.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.3456105 = fieldWeight in 1813, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0234375 = fieldNorm(doc=1813)
    0.043015826 = product of:
      0.08603165 = sum of:
        0.08603165 = weight(_text_:engines in 1813) [ClassicSimilarity], result of:
          0.08603165 = score(doc=1813,freq=8.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.33681408 = fieldWeight in 1813, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0234375 = fieldNorm(doc=1813)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Content

MARCEL MACHILL / MARKUS BEILER / MARTIN ZENKER: Suchmaschinenforschung. Überblick und Systematisierung eines interdisziplinären Forschungsfeldes TEIL 1: SUCHMASCHINENREGULIERUNG UND -ÖKONOMIE URS GASSER / JAMES THURMAN: Themen und Herausforderungen der Regulierung von Suchmaschinen NORBERT SCHNEIDER: Die Notwendigkeit der Suchmaschinenregulierung aus Sicht eines Regulierers WOLFGANG SCHULZ / THORSTEN HELD: Der Index auf dem Index? Selbstzensur und Zensur bei Suchmaschinen BORIS ROTENBERG: Towards Personalised Search: EU Data Protection Law and its Implications for Media Pluralism ELIZABETH VAN COUVERING: The Economy of Navigation: Search Engines, Search Optimisation and Search Results THEO RÖHLE: Machtkonzepte in der Suchmaschinenforschung TEIL 2: SUCHMASCHINEN UND JOURNALISMUS VINZENZ WYSS / GUIDO KEEL: Google als Trojanisches Pferd? Konsequenzen der Internet-Recherche von Journalisten für die journalistische Qualität NIC NEWMAN: Search Strategies and Activities of BBC News Interactive JÖRG SADROZINSKI: Suchmaschinen und öffentlich-rechtlicher Onlinejournalismus am Beispiel tagesschau.de HELMUT MARTIN-JUNG: Suchmaschinen und Qualitätsjournalismus PHILIP GRAF DÖNHOFF / CHRISTIAN BARTELS: Online-Recherche bei NETZEITUNG.DE SUSAN KEITH: Searching for News Headlines: Connections between Unresolved Hyperlinking Issues and a New Battle over Copyright Online AXEL BUNDENTHAL: Suchmaschinen als Herausforderung für Archive und Dokumentationsbereiche am Beispiel des ZDF BENJAMIN PETERS: The Search Engine Democracy: Metaphors and Muhammad
TEIL 3: QUALITÄT VON SUCHMASCHINEN UND NUTZERVERHALTEN] DIRK LEWANDOWSKI: Mit welchen Kennzahlen lässt sich die Qualität von Suchmaschinen messen? BENJAMIN EDELMAN: Assessing and Improving the Safety of Internet Search Engines HENDRIK SPECK / FREDERIC PHILIPP THIELE: Playing the Search Engines or Hacking the Box: Möglichkeiten und Gefahren von Suchmaschinen-Hacking am Beispiel von Google NATALIE KINK / THOMAS HESS: Suchmaschinen als Substitut traditioneller Medien? Erste Ergebnisse einer Studie zum Wandel der Informationsbeschaffung durch Suchmaschinen DIVINA FRAU-MEIGS: Minding the Gatekeepers: Search Engines for Young People, and the Regulatory Riddle of Harmful Content an Environmental Cognition Perspective MARCEL MACHILL / MARKUS BEILER / ULRIKE NEUMANN: Leistungsfähigkeit von wissenschaftlichen Suchmaschinen. Ein Experiment am Beispiel von Google Scholar

0.0659266 = product of:
  0.09888989 = sum of:
    0.03354964 = weight(_text_:search in 150) [ClassicSimilarity], result of:
      0.03354964 = score(doc=150,freq=8.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.19200584 = fieldWeight in 150, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.01953125 = fieldNorm(doc=150)
    0.06534025 = sum of:
      0.03584652 = weight(_text_:engines in 150) [ClassicSimilarity], result of:
        0.03584652 = score(doc=150,freq=2.0), product of:
          0.25542772 = queryWeight, product of:
            5.080822 = idf(docFreq=746, maxDocs=44218)
            0.05027291 = queryNorm
          0.1403392 = fieldWeight in 150, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.080822 = idf(docFreq=746, maxDocs=44218)
            0.01953125 = fieldNorm(doc=150)
      0.029493734 = weight(_text_:22 in 150) [ClassicSimilarity], result of:
        0.029493734 = score(doc=150,freq=6.0), product of:
          0.17604718 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05027291 = 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)
  0.6666667 = coord(2/3)

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."

0.06542733 = product of:
  0.098141 = sum of:
    0.04744636 = weight(_text_:search in 6) [ClassicSimilarity], result of:
      0.04744636 = score(doc=6,freq=4.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.27153727 = fieldWeight in 6, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0390625 = fieldNorm(doc=6)
    0.05069464 = product of:
      0.10138928 = sum of:
        0.10138928 = weight(_text_:engines in 6) [ClassicSimilarity], result of:
          0.10138928 = score(doc=6,freq=4.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.39693922 = fieldWeight in 6, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0390625 = fieldNorm(doc=6)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

LCSH

Web search engines / Handbooks, manuals, etc.

Subject

Web search engines / Handbooks, manuals, etc.

0.06418283 = product of:
  0.09627424 = sum of:
    0.05325841 = weight(_text_:search in 6) [ClassicSimilarity], result of:
      0.05325841 = score(doc=6,freq=14.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.30479985 = fieldWeight in 6, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.0234375 = fieldNorm(doc=6)
    0.043015826 = product of:
      0.08603165 = sum of:
        0.08603165 = weight(_text_:engines in 6) [ClassicSimilarity], result of:
          0.08603165 = score(doc=6,freq=8.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.33681408 = fieldWeight in 6, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0234375 = fieldNorm(doc=6)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

Why doesn't your home page appear on the first page of search results, even when you query your own name? How do other Web pages always appear at the top? What creates these powerful rankings? And how? The first book ever about the science of Web page rankings, "Google's PageRank and Beyond" supplies the answers to these and other questions and more. The book serves two very different audiences: the curious science reader and the technical computational reader. The chapters build in mathematical sophistication, so that the first five are accessible to the general academic reader. While other chapters are much more mathematical in nature, each one contains something for both audiences. For example, the authors include entertaining asides such as how search engines make money and how the Great Firewall of China influences research. The book includes an extensive background chapter designed to help readers learn more about the mathematics of search engines, and it contains several MATLAB codes and links to sample Web data sets. The philosophy throughout is to encourage readers to experiment with the ideas and algorithms in the text. Any business seriously interested in improving its rankings in the major search engines can benefit from the clear examples, sample code, and list of resources provided. It includes: many illustrative examples and entertaining asides; MATLAB code; accessible and informal style; and complete and self-contained section for mathematics review.

Content

Inhalt: Chapter 1. Introduction to Web Search Engines: 1.1 A Short History of Information Retrieval - 1.2 An Overview of Traditional Information Retrieval - 1.3 Web Information Retrieval Chapter 2. Crawling, Indexing, and Query Processing: 2.1 Crawling - 2.2 The Content Index - 2.3 Query Processing Chapter 3. Ranking Webpages by Popularity: 3.1 The Scene in 1998 - 3.2 Two Theses - 3.3 Query-Independence Chapter 4. The Mathematics of Google's PageRank: 4.1 The Original Summation Formula for PageRank - 4.2 Matrix Representation of the Summation Equations - 4.3 Problems with the Iterative Process - 4.4 A Little Markov Chain Theory - 4.5 Early Adjustments to the Basic Model - 4.6 Computation of the PageRank Vector - 4.7 Theorem and Proof for Spectrum of the Google Matrix Chapter 5. Parameters in the PageRank Model: 5.1 The a Factor - 5.2 The Hyperlink Matrix H - 5.3 The Teleportation Matrix E Chapter 6. The Sensitivity of PageRank; 6.1 Sensitivity with respect to alpha - 6.2 Sensitivity with respect to H - 6.3 Sensitivity with respect to vT - 6.4 Other Analyses of Sensitivity - 6.5 Sensitivity Theorems and Proofs Chapter 7. The PageRank Problem as a Linear System: 7.1 Properties of (I - alphaS) - 7.2 Properties of (I - alphaH) - 7.3 Proof of the PageRank Sparse Linear System Chapter 8. Issues in Large-Scale Implementation of PageRank: 8.1 Storage Issues - 8.2 Convergence Criterion - 8.3 Accuracy - 8.4 Dangling Nodes - 8.5 Back Button Modeling
Chapter 9. Accelerating the Computation of PageRank: 9.1 An Adaptive Power Method - 9.2 Extrapolation - 9.3 Aggregation - 9.4 Other Numerical Methods Chapter 10. Updating the PageRank Vector: 10.1 The Two Updating Problems and their History - 10.2 Restarting the Power Method - 10.3 Approximate Updating Using Approximate Aggregation - 10.4 Exact Aggregation - 10.5 Exact vs. Approximate Aggregation - 10.6 Updating with Iterative Aggregation - 10.7 Determining the Partition - 10.8 Conclusions Chapter 11. The HITS Method for Ranking Webpages: 11.1 The HITS Algorithm - 11.2 HITS Implementation - 11.3 HITS Convergence - 11.4 HITS Example - 11.5 Strengths and Weaknesses of HITS - 11.6 HITS's Relationship to Bibliometrics - 11.7 Query-Independent HITS - 11.8 Accelerating HITS - 11.9 HITS Sensitivity Chapter 12. Other Link Methods for Ranking Webpages: 12.1 SALSA - 12.2 Hybrid Ranking Methods - 12.3 Rankings based on Traffic Flow Chapter 13. The Future of Web Information Retrieval: 13.1 Spam - 13.2 Personalization - 13.3 Clustering - 13.4 Intelligent Agents - 13.5 Trends and Time-Sensitive Search - 13.6 Privacy and Censorship - 13.7 Library Classification Schemes - 13.8 Data Fusion Chapter 14. Resources for Web Information Retrieval: 14.1 Resources for Getting Started - 14.2 Resources for Serious Study Chapter 15. The Mathematics Guide: 15.1 Linear Algebra - 15.2 Perron-Frobenius Theory - 15.3 Markov Chains - 15.4 Perron Complementation - 15.5 Stochastic Complementation - 15.6 Censoring - 15.7 Aggregation - 15.8 Disaggregation

0.060964026 = product of:
  0.091446035 = sum of:
    0.02372318 = weight(_text_:search in 634) [ClassicSimilarity], result of:
      0.02372318 = score(doc=634,freq=4.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.13576864 = fieldWeight in 634, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.01953125 = fieldNorm(doc=634)
    0.06772286 = sum of:
      0.05069464 = weight(_text_:engines in 634) [ClassicSimilarity], result of:
        0.05069464 = score(doc=634,freq=4.0), product of:
          0.25542772 = queryWeight, product of:
            5.080822 = idf(docFreq=746, maxDocs=44218)
            0.05027291 = queryNorm
          0.19846961 = fieldWeight in 634, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            5.080822 = idf(docFreq=746, maxDocs=44218)
            0.01953125 = fieldNorm(doc=634)
      0.017028214 = weight(_text_:22 in 634) [ClassicSimilarity], result of:
        0.017028214 = score(doc=634,freq=2.0), product of:
          0.17604718 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05027291 = queryNorm
          0.09672529 = fieldWeight in 634, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.01953125 = fieldNorm(doc=634)
  0.6666667 = coord(2/3)

Abstract

Are we at a turning point in digital information? The expansion of the internet was unprecedented; search engines dealt with it in the only way possible - scan as much as they could and throw it all into an inverted index. But now search engines are beginning to experiment with deep web searching and attention to taxonomies, and the semantic web is demonstrating how much more can be done with a computer if you give it knowledge. What does this mean for the skills and focus of the information science (or sciences) community? Should information designers and information managers work more closely to create computer based information systems for more effective retrieval? Will information science become part of computer science and does the rise of the term informatics demonstrate the convergence of information science and information technology - a convergence that must surely develop in the years to come? Issues and questions such as these are reflected in this monograph, a collection of essays written by some of the most pre-eminent contributors to the discipline. These peer reviewed perspectives capture insights into advances in, and facets of, information science, a profession in transition. With an introduction from Jack Meadows the key papers are: Meeting the challenge, by Brian Vickery; The developing foundations of information science, by David Bawden; The last 50 years of knowledge organization, by Stella G Dextre Clarke; On the history of evaluation in IR, by Stephen Robertson; The information user, by Tom Wilson A; The sociological turn in information science, by Blaise Cronin; From chemical documentation to chemoinformatics, by Peter Willett; Health informatics, by Peter A Bath; Social informatics and sociotechnical research, by Elisabeth Davenport; The evolution of visual information retrieval, by Peter Enser; Information policies, by Elizabeth Orna; Disparity in professional qualifications and progress in information handling, by Barry Mahon; Electronic scholarly publishing and open access, by Charles Oppenheim; Social software: fun and games, or business tools? by Wendy A Warr; and, Bibliometrics to webometrics, by Mike Thelwall. This monograph previously appeared as a special issue of the "Journal of Information Science", published by Sage. Reproduced here as a monograph, this important collection of perspectives on a skill set in transition from a prestigious line-up of authors will now be available to information studies students worldwide and to all those working in the information science field.

Date

22. 2.2013 11:35:35

0.05234187 = product of:
  0.0785128 = sum of:
    0.037957087 = weight(_text_:search in 1991) [ClassicSimilarity], result of:
      0.037957087 = score(doc=1991,freq=4.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.21722981 = fieldWeight in 1991, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.03125 = fieldNorm(doc=1991)
    0.04055571 = product of:
      0.08111142 = sum of:
        0.08111142 = weight(_text_:engines in 1991) [ClassicSimilarity], result of:
          0.08111142 = score(doc=1991,freq=4.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.31755137 = fieldWeight in 1991, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.03125 = fieldNorm(doc=1991)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

LCSH

Web search engines / United States / History

Subject

Web search engines / United States / History

0.048089173 = product of:
  0.07213376 = sum of:
    0.041089755 = weight(_text_:search in 2050) [ClassicSimilarity], result of:
      0.041089755 = score(doc=2050,freq=12.0), product of:
        0.1747324 = queryWeight, product of:
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.05027291 = queryNorm
        0.23515818 = fieldWeight in 2050, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          3.475677 = idf(docFreq=3718, maxDocs=44218)
          0.01953125 = fieldNorm(doc=2050)
    0.031044003 = product of:
      0.062088005 = sum of:
        0.062088005 = weight(_text_:engines in 2050) [ClassicSimilarity], result of:
          0.062088005 = score(doc=2050,freq=6.0), product of:
            0.25542772 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.05027291 = queryNorm
            0.24307466 = fieldWeight in 2050, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.01953125 = fieldNorm(doc=2050)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Footnote

Rez. in: KO 50(2003) no.1, S.45-46 (L.M. Given): "In her own preface to this work, the author notes her lifelong fascination with classification and order, as well as her more recent captivation with the Internet - a place of "chaos in need of organization" (xi). Sorting out the Web examines current efforts to organize the Web and is well-informed by the author's academic and professional expertise in information organization, information retrieval, and Web development. Although the book's level and tone are particularly relevant to a student audience (or others interested in Web-based subject access at an introductory level), it will also appeal to information professionals developing subject access systems across a range of information contexts. There are six chapters in the book, each describing and analyzing one core concept related to the organization of Web content. All topics are presented in a manner ideal for newcomers to the area, with clear definitions, examples, and visuals that illustrate the principles under discussion. The first chapter provides a brief introduction to developments in information technology, including an historical overview of information services, users' needs, and libraries' responses to the Internet. Chapter two introduces metadata, including core concepts and metadata formats. Throughout this chapter the author presents a number of figures that aptly illustrate the application of metadata in HTML, SGML, and MARC record environments, and the use of metadata tools (e.g., XML, RDF). Chapter three begins with an overview of classification theory and specific schemes, but the author devotes most of the discussion to the application of classification systems in the Web environment (e.g., Dewey, LCC, UDC). Web screen captures illustrate the use of these schemes for information sources posted to sites around the world. The chapter closes with a discussion of the future of classification; this is a particularly useful section as the author presents a listing of core journal and conference venues where new approaches to Web classification are explored. In chapter four, the author extends the discussion of classification to the use of controlled vocabularies. As in the first few chapters, the author first presents core background material, including reasons to use controlled vocabularies and the differences between preand post-coordinate indexing, and then discusses the application of specific vocabularies in the Web environment (e.g., Infomine's use of LCSH). The final section of the chapter explores failure in subject searching and the limitations of controlled vocabularies for the Web. Chapter five discusses one of the most common and fast-growing topics related to subject access an the Web: search engines. The author presents a clear definition of the term that encompasses classified search lists (e.g., Yahoo) and query-based engines (e.g., Alta Vista). In addition to historical background an the development of search engines, Schwartz also examines search service types, features, results, and system performance.
The chapter concludes with an appendix of search tips that even seasoned searchers will appreciate; these tips cover the complete search process, from preparation to the examination of results. Chapter six is appropriately entitled "Around the Corner," as it provides the reader with a glimpse of the future of subject access for the Web. Text mining, visualization, machine-aided indexing, and other topics are raised here to whet the reader's appetite for what is yet to come. As the author herself notes in these final pages, librarians will likely increase the depth of their collaboration with software engineers, knowledge managers and others outside of the traditional library community, and thereby push the boundaries of subject access for the digital world. This final chapter leaves this reviewer wanting a second volume of the book, one that might explore these additional topics, as they evolve over the coming years. One characteristic of any book that addresses trends related to the Internet is how quickly the text becomes dated. However, as the author herself asserts, there are core principles related to subject analysis that stand the test of time, leaving the reader with a text that may be generalized well beyond the publication date. In this, Schwartz's text is similar to other recent publications (e.g., Jakob Nielsen's Web Usability, also published in 2001) that acknowledge the mutability of the Web, and therefore discuss core principles and issues that may be applied as the medium itself evolves. This approach to the writing makes this a useful book for those teaching in the areas of subject analysis, information retrieval and Web development for possible consideration as a course text. Although the websites used here may need to be supplemented with more current examples in the classroom, the core content of the book will be relevant for many years to come. Although one might expect that any book taking subject access as its focus world, itself, be easy to navigate, this is not always the case. In this text, however, readers will be pleased to find that no small detail in content access has been spared. The subject Index is thorough and well-crafted, and the inclusion of an exhaustive author index is particularly useful for quick reference. In addition, the table of contents includes sub-themes for each chapter, and a complete table of figures is provided. While the use of colour figures world greatly enhance the text, all black-andwhite images are clear and sharp, a notable fact given that most of the figures are screen captures of websites or database entries. In addition, the inclusion of comprehensive reference lists at the close of each chapter makes this a highly readable text for students and instructors alike; each section of the book can stand as its own "expert review" of the topic at hand. In both content and structure this text is highly recommended. It certainly meets its intended goal of providing a timely introduction to the methods and problems of subject access in the Web environment, and does so in a way that is readable, interesting and engaging."