Search (13 results, page 1 of 1)

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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.

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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.

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Content

SESSION: Digital libraries for spatial data The ADEPT digital library architecture (Greg Janée, James Frew) - G-Portal: a map-based digital library for distributed geospatial and georeferenced resources (Ee-Peng Lim, Dion Hoe-Lian Goh, Zehua Liu, Wee-Keong Ng, Christopher Soo-Guan Khoo, Susan Ellen Higgins) PANEL SESSION: Panels You mean I have to do what with whom: statewide museum/library DIGI collaborative digitization projects---the experiences of California, Colorado & North Carolina (Nancy Allen, Liz Bishoff, Robin Chandler, Kevin Cherry) - Overcoming impediments to effective health and biomedical digital libraries (William Hersh, Jan Velterop, Alexa McCray, Gunther Eynsenbach, Mark Boguski) - The challenges of statistical digital libraries (Cathryn Dippo, Patricia Cruse, Ann Green, Carol Hert) - Biodiversity and biocomplexity informatics: policy and implementation science versus citizen science (P. Bryan Heidorn) - Panel on digital preservation (Joyce Ray, Robin Dale, Reagan Moore, Vicky Reich, William Underwood, Alexa T. McCray) - NSDL: from prototype to production to transformational national resource (William Y. Arms, Edward Fox, Jeanne Narum, Ellen Hoffman) - How important is metadata? (Hector Garcia-Molina, Diane Hillmann, Carl Lagoze, Elizabeth Liddy, Stuart Weibel) - Planning for future digital libraries programs (Stephen M. Griffin) DEMONSTRATION SESSION: Demonstrations u.a.: FACET: thesaurus retrieval with semantic term expansion (Douglas Tudhope, Ceri Binding, Dorothee Blocks, Daniel Cunliffe) - MedTextus: an intelligent web-based medical meta-search system (Bin Zhu, Gondy Leroy, Hsinchun Chen, Yongchi Chen) POSTER SESSION: Posters TUTORIAL SESSION: Tutorials u.a.: Thesauri and ontologies in digital libraries: 1. structure and use in knowledge-based assistance to users (Dagobert Soergel) - How to build a digital library using open-source software (Ian H. Witten) - Thesauri and ontologies in digital libraries: 2. design, evaluation, and development (Dagobert Soergel) WORKSHOP SESSION: Workshops Document search interface design for large-scale collections and intelligent access (Javed Mostafa) - Visual interfaces to digital libraries (Katy Börner, Chaomei Chen) - Text retrieval conference (TREC) genomics pre-track workshop (William Hersh)

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Date

22. 3.2008 14:35:21

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Date

22. 3.2008 14:29:25

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Date

22. 3.2008 16:15:37

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Footnote

Unlike muck of the professional library literature, Net Effects is not an open-aimed embrace of technology. Block even suggests that it is helpful to have a Luddite or two an each library staff to identify the setbacks associated with technological advances in the library. Each of the book's 10 chapters deals with one Internet-related problem, such as "Chapter 4-The Shifted Librarian: Adapting to the Changing Expectations of Our Wired (and Wireless) Users," or "Chapter 8-Up to Our Ears in Lawyers: Legal Issues Posed by the Net." For each of these 10 problems, multiple solutions are offered. For example, for "Chapter 9-Disappearing Data," four solutions are offered. These include "Link-checking," "Have a technological disaster plan," "Advise legislators an the impact proposed laws will have," and "Standards for preservation of digital information." One article is given to explicate each of these four solutions. A short bibliography of recommended further reading is also included for each chapter. Block provides a short introduction to each chapter, and she comments an many of the entries. Some of these comments seem to be intended to provide a research basis for the proposed solutions, but they tend to be vague generalizations without citations, such as, "We know from research that students would rather ask each other for help than go to adults. We can use that (p. 91 )." The original publication dates of the entries range from 1997 to 2002, with the bulk falling into the 2000-2002 range. At up to 6 years old, some of the articles seem outdated, such as a 2000 news brief announcing the creation of the first "customizable" public library Web site (www.brarydog.net). These critiques are not intended to dismiss the volume entirely. Some of the entries are likely to find receptive audiences, such as a nuts-and-bolts instructive article for making Web sites accessible to people with disabilities. "Providing Equitable Access," by Cheryl H. Kirkpatrick and Catherine Buck Morgan, offers very specific instructions, such as how to renovate OPAL workstations to suit users with "a wide range of functional impairments." It also includes a useful list of 15 things to do to make a Web site readable to most people with disabilities, such as, "You can use empty (alt) tags (alt="') for images that serve a purely decorative function. Screen readers will skip empty (alt) tags" (p. 157). Information at this level of specificity can be helpful to those who are faced with creating a technological solution for which they lack sufficient technical knowledge or training.

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Footnote

In einem abschliessenden Kapitel geht das Buch auf Thesauruspflege und -verwaltung ein, wobei auch das Thema "Thesaurussoftware" angerissen wird - letzteres vielleicht ein wenig zu kurz. Erst hier mag manchem unbefangenen Leser bewusst werden, dass die in den vorhergehenden Kapiteln dargestellte Methodik eigentlich ohne den Einsatz dezidierter Software besprochen wurde, ja vielleicht auch so besprochen werden musste, um ein entsprechendes Verständnis herzustellen. In der nachfolgenden zweiseitigen Conclusio wird erwähnt, dass die britische Norm Structured Vocabularies for Information Retrieval (BS 8723) vor einer Neufassung stehe - was den Rezensenten darauf hinzuweisen gemahnt, dass sich dieses Buch natürlich ausschliesslich auf den anglo-amerikanischen Sprachraum und die dort geltenden Thesaurus-Gepflogenheiten bezieht. Der relativ umfangreiche Anhang beinhaltet ausser Materialie zum erwähnten Demonstrationsbeispiel auch ein nützliches Glossarium sowie ein professionell gefertigtes Sachregister. Literaturhinweise werden - in sparsamer Dosierung - jeweils am Ende der einzelnen Kapitel gegeben, sodass sich die "Bibliography" am Ende des Buches auf einige Normen und zwei Standardwerke beschränken kann. Realistisch betrachtet, darf vermutlich nicht davon ausgegangen werden, dass Leser, die dieses Buch durchgearbeitet haben, sogleich in der Lage sein werden, eigenständig einen Thesaurus zu erstellen. Ein Lehrbuch allein kann weder einen Kurs noch die praktische Erfahrung ersetzen, die für eine solche Tätigkeit vonnöten sind. Ich kann mir aber gut vorstellen, dass die Kenntnis der in diesem Buch vermittelten Inhalte sehr wohl in die Lage versetzt, in einem Team, das einen Thesaurus erstellen soll, kompetent mitzuarbeiten, mit den Konzepten und Fachtermini zurechtzukommen und selbst konstruktive Beiträge zu leisten. Ausserdem erscheint mir das Werk hervorragend als Begleitmaterial zu einer Lehrveranstaltung geeignet - oder auch als Grundlage für die Planung einer solchen. Ein britischer Einführungstext eben, im besten Sinne."

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Classification

006.7 22

Date

7. 3.2007 19:30:22

DDC

006.7 22

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Date

22. 3.2008 18:05:16

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Date

23. 3.2008 19:10:22