-
Altmann, O.; Pöhl, S.: Information Retrieval im Internet : bekannte Suchdienste und ihre Eigenschaften (1997)
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- Pages
- S.18-22
-
Milne, R.: ¬The Google Library Project at Oxford (2005)
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- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
-
Lewandowski, D.: Suchmaschinen (2013)
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- 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
-
MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000)
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- Date
- 22. 6.2002 19:40:22
-
Bouidghaghen, O.; Tamine, L.: Spatio-temporal based personalization for mobile search (2012)
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- Date
- 20. 4.2012 13:19:22
-
Donlan, R.; Cooke, R.: Running with the devil : accessing library-licensed full text holdings through Google Scholar (2005)
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- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
-
Ozcan, R.; Altingovde, I.S.; Ulusoy, O.: Exploiting navigational queries for result presentation and caching in Web search engines (2011)
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-
Sugiura, A.; Etzioni, O.: Query routing for Web search engines : architecture and experiments (2000)
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-
Force, R.: Image: Google's most important product (2005)
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- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
-
Anderson, R.: ¬The (uncertain) future of libraries in a Google world : sounding an alarm (2005)
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- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
-
Cathcart, R.; Roberts, A.: Evaluating Google Scholar as a tool for information literacy (2005)
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- Source
- Libraries and Google. Eds.: Miller, W. u. R.M. Pellen
-
Hüskes, R.; Kleber, D.: ¬Den Server im Griff (1999)
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- Date
- 22. 8.1999 21:21:10
-
Alqaraleh, S.; Ramadan, O.; Salamah, M.: Efficient watcher based web crawler design (2015)
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- Date
- 20. 1.2015 18:30:22
-
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
-
Mooney, G.; John, R.: Intelligent information retrieval from the World Wide Web using fuzzy user modelling (1997)
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- Source
- Electronic library and visual information research: Proceedings of the 4th ELVIRA Conference (ELVIRA 4), Electronic Library and Visual Information Research, De Montfort University, Milton Keynes, May 1997. Ed. by C. Davies u. A. Ramsden
-
Wolff, C.: Effektivität von Recherchen im WWW : Vergleichende Evaluierung von such- und Metasuchmaschinen (2000)
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- Source
- Informationskompetenz - Basiskompetenz in der Informationsgesellschaft: Proceedings des 7. Internationalen Symposiums für Informationswissenschaft (ISI 2000), Hrsg.: G. Knorz u. R. Kuhlen
-
Force, R.: Keeping up with Google : Resources and strategies for staying ahead of the pack (2005)
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Rogers, R.: Zur Frage der Vergoogelung : Hin zu einer unkritisierbaren Maschine? (2009)
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- 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
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Gardner, T.; Iannella, R.: Architecture and software solutions (2000)
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- Date
- 22. 6.2002 19:38:24
-
Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001)
0.02
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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
