-
Rogers, R.: Zur Frage der Vergoogelung : Hin zu einer unkritisierbaren Maschine? (2009)
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- Pages
- S.193-206
- Source
- Deep Search: Politik des Suchens jenseits von Google; Deep Search-Konferenz, Wien, 2008.11.08; eine Veröffentlichung des World-Information Institute. Hrsg.: K. Becker u. F. Stalder
- Type
- a
-
Breyer, K.: Kommerz statt Information (2002)
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- Date
- 9. 5.2002 21:21:22
- Source
- PC professionell. 2002, H.6, S.122-129
- Type
- a
-
Williamson, N.J.: Knowledge structures and the Internet : progress and prospects (2006)
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- Abstract
- This paper analyses the development of the knowledge structures provided as aids to users in searching the Internet. Specific focus is given to web directories, thesauri and gateways and portals. The paper assumes that users need to be able to access information in two ways - to locate information on a subject directly in response to a search term and to be able to browse so as to familiarize themselves with a domain or to refine a request. Emphasis is to the browsing aspect. Background and development are addressed. Structures are analyzed, problems are identified, and future directions discussed.
- Date
- 27.12.2008 15:56:22
- Pages
- S.213-224
- Source
- Knowledge organization for a global learning society: Proceedings of the 9th International ISKO Conference, 4-7 July 2006, Vienna, Austria. Hrsg.: G. Budin, C. Swertz u. K. Mitgutsch
- Type
- a
-
Vidinli, I.B.; Ozcan, R.: New query suggestion framework and algorithms : a case study for an educational search engine (2016)
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- Abstract
- Query suggestion is generally an integrated part of web search engines. In this study, we first redefine and reduce the query suggestion problem as "comparison of queries". We then propose a general modular framework for query suggestion algorithm development. We also develop new query suggestion algorithms which are used in our proposed framework, exploiting query, session and user features. As a case study, we use query logs of a real educational search engine that targets K-12 students in Turkey. We also exploit educational features (course, grade) in our query suggestion algorithms. We test our framework and algorithms over a set of queries by an experiment and demonstrate a 66-90% statistically significant increase in relevance of query suggestions compared to a baseline method.
- Source
- Information processing and management. 52(2016) no.5, S.733-752
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
- Type
- a
-
Hüskes, R.; Kleber, D.: ¬Den Server im Griff (1999)
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- Date
- 22. 8.1999 21:21:10
- Source
- Internet Professionell. 1999, H.9, S.38-43
- Type
- a
-
Boldi, P.; Santini, M.; Vigna, S.: PageRank as a function of the damping factor (2005)
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- Abstract
- PageRank is defined as the stationary state of a Markov chain. The chain is obtained by perturbing the transition matrix induced by a web graph with a damping factor alpha that spreads uniformly part of the rank. The choice of alpha is eminently empirical, and in most cases the original suggestion alpha=0.85 by Brin and Page is still used. Recently, however, the behaviour of PageRank with respect to changes in alpha was discovered to be useful in link-spam detection. Moreover, an analytical justification of the value chosen for alpha is still missing. In this paper, we give the first mathematical analysis of PageRank when alpha changes. In particular, we show that, contrarily to popular belief, for real-world graphs values of alpha close to 1 do not give a more meaningful ranking. Then, we give closed-form formulae for PageRank derivatives of any order, and an extension of the Power Method that approximates them with convergence O(t**k*alpha**t) for the k-th derivative. Finally, we show a tight connection between iterated computation and analytical behaviour by proving that the k-th iteration of the Power Method gives exactly the PageRank value obtained using a Maclaurin polynomial of degree k. The latter result paves the way towards the application of analytical methods to the study of PageRank.
- Date
- 16. 1.2016 10:22:28
- Type
- a
-
Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001)
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- Abstract
- Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
- Footnote
- Vgl. auch den Bericht in: nfd 53(2002) H.2, S.71
- Source
- nfd Information - Wissenschaft und Praxis. 52(2001) H.7, S.381-392
- Type
- a
-
Milne, R.: ¬The Google Library Project at Oxford (2005)
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- Pages
- S.23-28
- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
- Type
- a
-
Lewandowski, D.: Suchmaschinen (2013)
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- Pages
- S.495-508
- Source
- Grundlagen der praktischen Information und Dokumentation. Handbuch zur Einführung in die Informationswissenschaft und -praxis. 6., völlig neu gefaßte Ausgabe. Hrsg. von R. Kuhlen, W. Semar u. D. Strauch. Begründet von Klaus Laisiepen, Ernst Lutterbeck, Karl-Heinrich Meyer-Uhlenried
- Type
- a
-
MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000)
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- Abstract
- Describes the development of EEVL and outlines the services offered. The potential market for EEVL is discussed, and a case study of promotional activities is presented
- Date
- 22. 6.2002 19:40:22
- Source
- Online information review. 24(2000) no.1, S.59-63
- Type
- a
-
Niedermair, K.: Gefährden Suchmaschinen und Discovery-Systeme die informationelle Autonomie? (2014)
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- Source
- Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare. 67(2014) H.1, S.109-125
- Type
- a
-
Mayer, K.: Zur Soziometrik der Suchmaschinen : ein historischer Überblick der Methodik (2009)
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- Pages
- S.64-83
- Source
- Deep Search: Politik des Suchens jenseits von Google; Deep Search-Konferenz, Wien, 2008.11.08; eine Veröffentlichung des World-Information Institute. Hrsg.: K. Becker u. F. Stalder
- Type
- a
-
Donlan, R.; Cooke, R.: Running with the devil : accessing library-licensed full text holdings through Google Scholar (2005)
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- Abstract
- Linking full-text proprietary databases with Google Scholar revealed three significant limitations in terms of precision (no subject heading search), transparency (no listing of information sources), and visibility (Google Scholar details are hard to find). Google Scholar is not a "one stop shopping" search engine that retrieves all relevant data from a library's licensed content. Despite these shortcomings, Google Scholar is a worthwhile search option for students, which may steer them away from Web resources, and towards the library's catalog and databases.
- Pages
- S.149-157
- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
- Type
- a
-
Hilberer, T.: Über die Zugänglichkeit der Informationen im Internet : Die Rolle der Bibliotheken (1999)
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- Footnote
- Bezugnahme auf den Artikel: Lawrence, S. u. C.L. Giles: Accessibility of information on the web. In: Nature. No.400 vom 8.7.1999, S.107-109.
- Source
- Bibliotheksdienst. 33(1999) H.9, S.1526-1545
- Type
- a
-
Force, R.: Image: Google's most important product (2005)
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- Abstract
- In a few short years, Google has become one of the world's best known brands. Its strategies to preserve the brand image pose a challenge for information professionals who attempt to present Google's capabilities in a factual manner.
- Pages
- S.205-209
- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
- Type
- a
-
Cathcart, R.; Roberts, A.: Evaluating Google Scholar as a tool for information literacy (2005)
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- Abstract
- There are a growing number of articles on the juncture of Google Scholar and libraries; this article seeks to address the ability of this resource to meet the information needs of students and researchers using the ACRL Information Literacy Standards. Each standard is applied to Google Scholar in this examination, and recommendations for how librarians might respond are offered.
- Pages
- S.167-176
- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
- Type
- a
-
Anderson, R.: ¬The (uncertain) future of libraries in a Google world : sounding an alarm (2005)
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- Abstract
- Libraries are in competition with other entities that provide information access to students, scholars and the general public. This constitutes a radical change in the information environment. The library profession's failure to take seriously the change that has taken place in the information environment, and to respond with fundamental changes of its own, may well spell disaster for the library as we know it.
- Pages
- S.29-36
- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
- Type
- a
-
Gärtner, R.: Findenix.com (1999)
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- Source
- Internet Professionell. 1999, H.9, S.18
- Type
- a
-
Milonas, E.: ¬An examination of facets within search engine result pages (2017)
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- Pages
- S.87-114
- Source
- Dimensions of knowledge: facets for knowledge organization. Eds.: R.P. Smiraglia, u. H.-L. Lee
- Type
- a
-
Lewandowski, D.; Spree, U.: ¬Die Forschungsgruppe Search Studies an der HAW Hamburg (2019)
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- Source
- Information - Wissenschaft und Praxis. 70(2019) H.1, S.1-2
- Type
- a
