Search (5 results, page 1 of 1)

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Date

23. 7.2017 13:49:22

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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.

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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)

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Abstract

Today's publishing infrastructure is rapidly changing. As electronic journals, digital libraries, collaboratories, logic servers, and other knowledge infrastructures emerge an the internet, the key aspects of this transformation need to be identified. Knowledge is becoming increasingly dynamic and integrated. Instead of writing self-contained articles, authors are turning to the new practice of embedding their findings into dynamic networks of knowledge. Here, the author details the implications that this transformation is having an the creation, dissemination and organization of academic knowledge. The author Shows that many established publishing principles need to be given up in order to facilitate this transformation. The text provides valuable insights for knowledge managers, designers of internet-based knowledge infrastructures, and professionals in the publishing industry. Researchers will find the scenarios and implications for research processes stimulating and thought-provoking.

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Footnote

Rez. in: BuB 60(2008) H.10, S.756-758 (H. Wiesenmüller): "In erster Linie für am Thema Sacherschließung Interessierte ist dieses neue Lehrbuch, das der Düsseldorfer Informationswissenschaftler Wolfgang G. Stock gemeinsam mit Mechtild Stock verfasst hat. Als primäre Zielgruppe werden Studierende der »Informationswissenschaft, Informatik und Wirtschaftsinformatik, Wirtschaftswissenschaften, Informationswirtschaft, Information und Dokumentation, Bibliothekswesen, Computerlinguistik« (Seite XVI) genannt; daneben sind auch Praktiker aus diesen Bereichen angesprochen. In Abgrenzung zu anderen, stärker praktisch ausgerichteten Lehrbüchern wie etwa Jutta Bertrams »Einführung in die inhaltliche Erschließung«' haben die Autoren den Anspruch, einen »ausgewogenen Ausgleich [...] zwischen Theorie und Praxis« und »zwischen den beteiligten Wissenschaftsdisziplinen, vor allem Informationswissenschaft, Informatik und Bibliothekswissenschaft« (Seite XIII) zu bieten. Die Aufmachung des Bandes als eigenständige Monografie führt etwas in die Irre, denn faktisch handelt es sich um den zweiten Teil der »Einführung in die Informationswissenschaft«. Diese wird im Vorwort als Reihe bezeichnet, scheint aber von der Sache her eher ein mehrbändiges Werk zu sein. Tatsächlich wird im Text häufig auf den ersten Teil »Information Retrieval« verwiesen und empfohlen, beide Bände nebeneinander zu verwenden (Seite XVI). . . .