Search (13 results, page 1 of 1)

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Content

Pressestimmen So bringt Literatursuche Lust statt Frust. www.literaturmarkt.info Dieser Ratgeber demonstriert Schritt für Schritt, wie man die passende Literatur, z.B. für Seminar- und Hausarbeiten, findet und verarbeitet. www.lehrerbibliothek.de Schlüsselkompetenzen: Literatur recherchieren in Bibliotheken und Internet führt Studenten in die Geheimnisse der Uni-Bibliothek ein. Das Buch liefert zudem Informationen über Online-Kataloge, Datenbanken, die Elektronische Zeitschriftenbibliothek (EZB) und die gängigen Suchmaschinen. www.stellenboersen.de Nützliches und höchst informatives Lehrbuch zu der Schlüsselkompetenz Literaturrecherche. Universitätsbibliothek Freiburg Gutes Recherchieren will gelernt sein, zumal in der heutigen Zeit, da das Informationsangebot ungeahnte Ausmaße angenommen hat und sich viele davon überfordert fühlen. Da nicht alle Hochschulen entsprechende Kurse anbieten, ist es gut, einen kundigen Ratgeber wie diesen zur Hand zu haben. STUDIUM Der Ratgeber besticht durch seinen übersichtlichen Aufbau und eignet sich deshalb auch als Nachschlagewerk. Zahlreiche Beispielrecherchen, Checklisten und Tipps zur Literatursuche erleichtern die Umsetzung des Gelesenen. ph akzente Im Zentrum steht nicht nur die Recherche, sondern ein umfassender Begriff der Informationskompetenz. Germanistik Der preisgünstige Band verdient eine nachdrückliche Kaufempfehlung bei Studierenden (und Lehrenden). Informationsmittel (IFB) : digitales Rezensionsorgan für Bibliotheken und Wissenschaft.

LCSH

Information retrieval
Web search engines

RSWK

Literaturrecherche / Bibliothek / Internet / Ratgeber (SBB)
Information Retrieval / Bibliothek / Internet (BVB)
Information Retrieval / Internet / Bibliothek / Lehrbuch (BVB)
Literaturrecherche / Bibliothek / Internet (DNB)

Subject

Literaturrecherche / Bibliothek / Internet / Ratgeber (SBB)
Information Retrieval / Bibliothek / Internet (BVB)
Information Retrieval / Internet / Bibliothek / Lehrbuch (BVB)
Literaturrecherche / Bibliothek / Internet (DNB)
Information retrieval
Web search engines

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Abstract

This book provides relevant content in the areas of information retrieval systems, services, and research; covering topics such as social tagging, collaborative querying, social network analysis, subjective relevance judgments, and collaborative filtering. Answering the increasing demand for authoritative resources on Internet technologies, this will make an indispensable addition to any library collection

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.].

Imprint

Hershey, Pa. : Information Science Reference

LCSH

Web search engines
World Wide Web / Subject access
Information storage and retrieval systems
Information retrieval

RSWK

World Wide Web 2.0
Information Retrieval / World Wide Web / Suchmaschine

Subject

Web search engines
World Wide Web / Subject access
Information storage and retrieval systems
Information retrieval
World Wide Web 2.0
Information Retrieval / World Wide Web / Suchmaschine

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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

LCSH

Web search engines

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)
Web search engines

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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

World Wide Web / Computer programs
Web search engines

RSWK

Suchmaschine / World Wide Web / Information Retrieval

Subject

Suchmaschine / World Wide Web / Information Retrieval
World Wide Web / Computer programs
Web search engines

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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.

BK

05.38 / Neue elektronische Medien <Kommunikationswissenschaft>

Classification

05.38 / Neue elektronische Medien <Kommunikationswissenschaft>

LCSH

Web search engines
World Wide Web

Subject

Web search engines
World Wide Web

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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

RSWK

World Wide Web / Information Retrieval / Mensch-Maschine-Kommunikation / Benutzerorientierung (HBZ)

Subject

World Wide Web / Information Retrieval / Mensch-Maschine-Kommunikation / Benutzerorientierung (HBZ)
Web search engines

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Content

Introduction: Libraries and Their Interrelationships with Google - William Miller Disruptive Beneficence: The Google Print Program and the Future of Libraries - Mark Sandler The Google Library Project at Oxford - Ronald Milne The (Uncertain) Future of Libraries in a Google World: Sounding an Alarm - Rick Anderson A Gaggle of Googles: Limitations and Defects of Electronic Access as Panacea - -Mark Y. Herring Using the Google Search Appliance for Federated Searching: A Case Study - Mary Taylor Google's Print and Scholar Initiatives: The Value of and Impact on Libraries and Information Services - Robert J. Lackie Google Scholar vs. Library Scholar: Testing the Performance of Schoogle - Burton Callicott; Debbie Vaughn Google, the Invisible Web, and Librarians: Slaying the Research Goliath - Francine Egger-Sider; Jane Devine Choices in the Paradigm Shift: Where Next for Libraries? - Shelley E. Phipps; Krisellen Maloney Calling the Scholars Home: Google Scholar as a Tool for Rediscovering the Academic Library - Maurice C. York Checking Under the Hood: Evaluating Google Scholar for Reference Use - Janice Adlington; Chris Benda Running with the Devil: Accessing Library-Licensed Full Text Holdings Through Google Scholar - Rebecca Donlan; Rachel Cooke Directing Students to New Information Types: A New Role for Google in Literature Searches? - Mike Thelwall Evaluating Google Scholar as a Tool for Information Literacy Rachael Cathcart - Amanda Roberts Optimising Publications for Google Users - Alan Dawson Google and Privacy - Paul S. Piper Image: Google's Most Important Product - Ron Force Keeping Up with Google: Resources and Strategies for Staying Ahead of the Pack - Michael J. Krasulski; Steven J. Bell

Footnote

Ebenfalls direkt aus der Praxis erhält der Leser Informationen zum Google-PrintProgramm. Robert Milne beschreibt die Zusammenarbeit von Google und der Universität Oxford. In diesem Aufsatz wird - was dem Autor natürlich nicht anzulasten ist - ein Problem des vorliegenden Werks deutlich: Viele Informationen sind doch von sehr beschränkter Haltbarkeit. Der Redaktionsschluss war im Frühsommer 2005, sodass sich in vielen Bereichen bereits neue Entwicklungen ergeben haben. Dies ist beim Print-Programm der Fall, vor allem wird es aber bei dem Hauptthema des Bandes, nämlich Google Scholar, deutlich. Dieser Dienst wurde im November 2004 gestartet und stieß auf unterschiedlichste Reaktionen, die (anhand von Beispielen amerikanischer Bibliotheken) im Beitrag von Maurice C. York beschrieben werden. Einige Bibliotheken nahmen den Dienst begeistert auf und verlinkten diesen mit Lob versehen auf ihren Websites. Andere reagierten gegenteilig und warnten vor dessen schlechter Qualität. Auch weil vorauszusehen war, dass Google Scholar bei den Nutzern gut ankommen würde, darf das folgende Statement von einer Bibliothekswebsite geradezu als ignorant gelten: Google Scholar »is wonderful for those who do not have access to the library's databases« (S.119). Wie nun die Scholar-Nutzer auf die Bibliotheksangebote gelenkt werden können, beschreibt der ironisch »Running with the Devil« betitelte Aufsatz von Rebecca Donlan und Rachel Cooke. Die Autorinnen beschreiben den Einsatz von Link-Resolvern und gehen auf die in Google Scholar bestehenden Probleme durch unklare Bezeichnungen in den Trefferlisten ein. Einige Beispiele zeigen, dass Google Scholar auch in Kombination mit der Verlinkung auf die Bibliotheksbestände keine befriedigende Recherchesituation herstellt, sondern vielmehr weitere Anstrengungen nötig sind, um »das Beste beider Welten« zusammenzuführen. Zwei weitere Aufsätze beschäftigen sich mit der Frage, wie gut Google Scholar eigentlich ist. Einmal geht es darum, wie gut Scholar den »ACRL Information Literacy Standards« genügt. Der zweite Beitrag vergleicht Google Scholar anhand von fünf Suchaufgaben einerseits mit einem lokalen Bibliothekskatalog, andererseits mit EBSCOs Academic Search Premier und jeweils einer fachspezifischen Datenbank. Die Ergebnisse zeigen keine durchgehende Überlegenheit einer Suchlösung, vielmehr wird deutlich, dass es auf die Auswahl des richtigen Suchwerkzeugs für die bestehende Suchanfrage ankommt bzw. dass erst eine Kombination dieser Werkzeuge zu optimalen Ergebnissen führt. Man könnte also auch hier wieder sagen: Google und Bibliotheken, nicht Google oder Bibliotheken.
Ein besonders interessanter Aufsatz widmet sich der Frage, wie Bibliotheken ihre Web-Angebote (hier: vor allem die Seiten zu digitalisierten Werken) so optimieren können, dass sie von Google und anderen Suchmaschinen optimal indexiert werden können. Dies wird leicht verständlich erklärt und dürfte für viele Bibliotheken, deren entsprechende Websites noch suboptimal gestaltet sind, eine gute Hilfestellung sein. Auch sehr praktisch orientiert ist der letzte Beitrag des Bandes, der verschiedene Quellen vorstellt, die sich mit aktuellen Entwicklungen bei Google (bzw. bei Suchmaschinen allgemein) beschäftigen, diese einzeln bewertet und Empfehlungen abgibt, welche man regelmäßig und welche man ab und zu lesen sollte. Die Bedeutung ist hier klar: Wenn Bibliotheken sich mit Google messen (oder darüber hinaus gehen?) möchten, müssen sie die Konkurrenz und ihre aktuellen Produkte kennen. Interessant wäre gewesen, noch den einen oder anderen Beitrag zu Suchprodukten von Bibliotheksseite zu lesen. Wie sollten solche Produkte beschaffen sein, um den Google-Nutzer zu den Bibliotheksangeboten zu führen? Welche Angebote gibt es hier bereits? Wie sehen die Anbieter von OPACs und Bibliothekssystemen die Zukunft der Bibliotheksrecherche? Und auch auf die nach Meinung des Rezensenten zurzeit wohl wichtigste Frage im Google-Kontext wird nicht eingegangen: Wie kann es den Bibliotheken gelingen, ein System (oder Systeme) zu schaffen, das nicht nur versucht, die Stärken der Suchmaschinen zu adaptieren, sondern ihnen einen Schritt voraus zu sein? Diese Kritik soll aber nicht darüber hinwegtäuschen, dass es sich bei dem vorliegenden Werk um eine gut lesbare Zusammenstellung von Aufsätzen handelt, die allen empfohlen werden kann, die sich einen Überblick zur Thematik verschaffen wollen, die Diskussion in den internationalen Fachzeitschriften aber nicht sowieso minutiös verfolgen."
Weitere Rez. in JASIST 59(2008) H.9, S.1531-1533 (J. Satyanesan): "Libraries and Google is an interesting and enlightening compilation of 18 articles on Google and its impact on libraries. The topic is very current, debatable, and thought provoking. Google has profoundly empowered individuals and transformed access to information and librarians are very much concerned about its popularity and visibility. In this book, the leading authorities discuss the usefulness of Google, its influence and potential menace to libraries, and its implications for libraries and the scholarly communication. They offer practical suggestions to cope with the changing situation. The articles are written from different perspective and express all shades of opinion, both hopeful and fearful. One can discern varied moods-apprehension, resignation, encouragement, and motivation-on the part of the librarians. This is an important book providing a wealth of information for the 21st century librarian. There is a section called "Indexing, Abstracting & Website/Internet Coverage," which lists major indexing and abstracting services and other tools for bibliographic access. The format of the articles is uniform with an introduction, key words, and with the exception of two articles the rest have summaries and conclusions. References and notes of varying lengths are included in each article. This book has been copublished simultaneously as Internet Reference Quarterly, 10(3/4), 2005. Although there are single articles written on Google and libraries, this is the first book-length treatment of the topic.

LCSH

Web search engines

RSWK

Google / Bibliothek / Elektronische Bibliothek / Aufsatzsammlung
Bibliothek / Google / Aufsatzsammlung (BVB)

Subject

Web search engines
Google / Bibliothek / Elektronische Bibliothek / Aufsatzsammlung
Bibliothek / Google / Aufsatzsammlung (BVB)

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Abstract

"Web Search Engine Research", edited by Dirk Lewandowski, provides an understanding of Web search engines from the unique perspective of Library and Information Science. The book explores a range of topics including retrieval effectiveness, user satisfaction, the evaluation of search interfaces, the impact of search on society, reliability of search results, query log analysis, user guidance in the search process, and the influence of search engine optimization (SEO) on results quality. While research in computer science has mainly focused on technical aspects of search engines, LIS research is centred on users' behaviour when using search engines and how this interaction can be evaluated. LIS research provides a unique perspective in intermediating between the technical aspects, user aspects and their impact on their role in knowledge acquisition. This book is directly relevant to researchers and practitioners in library and information science, computer science, including Web researchers.

LCSH

Web search engines

Series

Library and information science; vol. 4

Subject

Web search engines

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BK

05.38 / Neue elektronische Medien <Kommunikationswissenschaft>

Classification

05.38 / Neue elektronische Medien <Kommunikationswissenschaft>

Footnote

Rez. in: Frankfurter Rundschau. Nr.66 vom 18.3.2006, S.17. (M. Meister): "Es ist eine kleine Kampfschrift, ein Pamphlet, geschrieben mit heißer, französischer Feder. Doch in Deutschland tut man es bereits ab: als Fortsetzung des müßigen Kulturkampfes zwischen Frankreich und Amerika, als "kulturkritisches Ressentiment". "Wo ist der Skandal", titelte die Süddeutsche Zeitung, als Jean-Noel Jeanneney sein Buch Googles Herausforderung unlängst in der französischen Botschaft in Berlin vorstellte. Man kann hierzulande nichts Böses darin erkennen, wenn die amerikanische Firma Google gemeinsam mit vier renommierten amerikanischen und der Universitätsbibliothek von Oxford innerhalb weniger Jahre 15 Millionen Bücher digitalisieren will. "So what", stöhnen die Deutschen, während die Franzosen auf die Barrikaden steigen. Aus französischer Perspektive verbirgt sich hinter dem im Winter 2004 angekündigten Projekt, "Google Print" mit Namen, tatsächlich ein kulturelles Schreckenszenario, dessen Folgen in der Öffentlichkeit breit diskutiert wurden. Von kultureller Hegemonie war die Rede, von der ewigen Dominanz der Amerikaner über die Europäer, sprich des Geldes über die Kultur. Der in Frankreich lebende Schriftsteller Alberto Manguel sah sogar den Albtraum seines Kollegen Jorge Louis Borges verwirklicht, der in seiner Erzählung Die Bibliothek von Babel genau davon geträumt hatte: eine Bibliothek, in der alles vorhanden ist, so viele Bücher, dass man kein einziges mehr wird finden können. Wo der Skandal ist? Nirgendwo, würde Jeanneney antworten. Denn darum geht es ihm tatsächlich nicht. Er plädiert vielmehr dafür, die Herausforderung anzunehmen, und Google das Feld nicht allein zu überlassen. Jeanneney, Leiter der französischen Nationalbibliothek und zweifellos Kenner der Materie, beschreibt deshalb eindringlich die Konsequenzen einer Digitalisierung des schriftlichen Kulturerbes unter amerikanisch-kommerziellem Monopol. Er hat diese kurze Kampfschrift, die soeben auf Deutsch bei Wagenbach erschienen ist, gewissermaßen als Flaschenpost benutzt, um die Verantwortlichen anderer Länder aufzurütteln und für ein gemeinsames Projekt zu gewinnen.
Sein Feldzug war erfolgreich: Europa will eine gemeinsame virtuelle Bibliothek aufbauen, an der sich nur die portugiesische Nationalbibliothek und die British Library nicht beteiligen wollen. Die Staatschefs sind sich einig, die Kulturminister im Gespräch. Es fehlen natürlich noch das Geld und sicher auch der Glaube daran, dass die träge Brüsseler Maschinerie es mit einem agilen amerikanischen Unternehmen aufnehmen könnte. Aber auch dort läuft nicht alles wie geplant: Selbst amerikanische Verleger haben gegen die Verletzung des Urheberrechtes protestiert und für Verzögerungen gesorgt. Jeanneney sieht in einem amerikanischen Alleingang und dem De-facto-Monopol von Google vor allem drei Gefahren: Erstens eine Hierarchisierung und Ordnung des Wissens nach rein kommerziellen Gesichtspunkten. "Kultur heißt nicht, alles kunterbunt auf einen Wühltisch zu schütten", sagt Jeanneney. Wissen und Kulturerbe müsse organisiert, das Angebot hierarchisiert werden. Die zweite kurzfristige Gefahr sieht er in der angelsächsischen Dominanz, in der Tatsache, dass die Trefferliste vor allem englische Texte anzeigen wird oder solche, die unter angloamerikanischem Blickwinkel ausgewählt wurden. Langfristig müsse man sich vor allem fragen, und darin sieht er die dritte Gefahr, wie ein Unternehmen, das so schnell eingehen kann wie es entstanden ist, den Fortbestand dieses Projektes sichern will. Jeanneney fordert die Staaten deshalb auf, sich einzumischen und diesem rein am Kapital orientierten Projekt einen längeren Atem einzuhauchen, "den Atem von mehreren Generationen". Jeanneneys Versuch, hinter dem moralischen Deckmäntelchen die materiellen Interessen von Google zu benennen, wird in Deutschland als "kulturkritisches Ressentiment" abgetan. Drängt sich die Frage auf, ob es sich in diesem Fall um ein antiamerikanisches oder womöglich eher um ein antifranzösisches Ressentiment handelt. Frankreichs Sozialromantiker und Kulturkämpfer stören offensichtlich den ungebrochen naiven Glauben an das messianische Versprechen des Kapitalismus, nach den Waren nun auch das Wissen der Welt zu verteilen. Es sieht aus, als gäbe es alles umsonst. Aber Google lässt sich seine Informationsbeschaffung bekanntlich bezahlen. Es gilt eben nicht das Gesetz der Enzyklopädie, sondern immer noch die Logik des Dow Jones."
Vgl. auch Jeanneney, J.-N., M. Meister: Ein Kind der kommerziellen Logik: Der Präsident der Pariser Bibliothèque Nationale de France, Jean-Noël Jeanneney, über "Google print" und eine virtuelle, europäische Bibliothek. [Interview]. In: Frankfurter Rundschau. Nr.208 vom 7.9.2005, S.17.

LCSH

Web search engines

RSWK

USA / Google / Bibliothek / Buch / Digitalisierung
Europa / Elektronische Bibliothek / Bibliothek / Kulturgut / Digitalisierung
Europa / Bibliothek / Buch / Google Inc. / Digitalisierung

Subject

USA / Google / Bibliothek / Buch / Digitalisierung
Europa / Elektronische Bibliothek / Bibliothek / Kulturgut / Digitalisierung
Europa / Bibliothek / Buch / Google Inc. / Digitalisierung
Web search engines

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Abstract

In Digital Methods, Richard Rogers proposes a methodological outlook for social and cultural scholarly research on the Web that seeks to move Internet research beyond the study of online culture. It is not a toolkit for Internet research, or operating instructions for a software package; it deals with broader questions. How can we study social media to learn something about society rather than about social media use? How can hyperlinks reveal not just the value of a Web site but the politics of association? Rogers proposes repurposing Web-native techniques for research into cultural change and societal conditions. We can learn to reapply such "methods of the medium" as crawling and crowd sourcing, PageRank and similar algorithms, tag clouds and other visualizations; we can learn how they handle hits, likes, tags, date stamps, and other Web-native objects. By "thinking along" with devices and the objects they handle, digital research methods can follow the evolving methods of the medium. Rogers uses this new methodological outlook to examine the findings of inquiries into 9/11 search results, the recognition of climate change skeptics by climate-change-related Web sites, the events surrounding the Srebrenica massacre according to Dutch, Serbian, Bosnian, and Croatian Wikipedias, presidential candidates' social media "friends," and the censorship of the Iranian Web. With Digital Methods, Rogers introduces a new vision and method for Internet research and at the same time applies them to the Web's objects of study, from tiny particles (hyperlinks) to large masses (social media).

Content

The end of the virtual : digital methods -- The link and the politics of Web space -- The website as archived object -- Googlization and the inculpable engine -- Search as research -- National Web studies -- Social media and post-demographics -- Wikipedia as cultural reference -- After cyberspace : big data, small data.

LCSH

Web search engines
World Wide Web / Research

RSWK

Internet / Recherche / World Wide Web 2.0

Subject

Internet / Recherche / World Wide Web 2.0
Web search engines
World Wide Web / Research

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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.

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

RSWK

Suchmaschine / Information Retrieval
Suchmaschine / Information Retrieval / Mathematisches Modell (HEBIS)

Subject

Web search engines
Suchmaschine / Information Retrieval
Suchmaschine / Information Retrieval / Mathematisches Modell (HEBIS)

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Web search engines

Subject

Web search engines

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LCSH

Web search engines

Subject

Web search engines