-
Li, L.; Shang, Y.; Zhang, W.: Improvement of HITS-based algorithms on Web documents
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- Content
- Vgl.: http%3A%2F%2Fdelab.csd.auth.gr%2F~dimitris%2Fcourses%2Fir_spring06%2Fpage_rank_computing%2Fp527-li.pdf. Vgl. auch: http://www2002.org/CDROM/refereed/643/.
-
Karzauninkat, S.: ¬Die Suchfibel : Wie findet man Informationen im Internet? (1998)
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- Pages
- 224 S. + CD-ROM
- RSWK
- Internet / Suchmaschine / CD-ROM (213)
Internet / Online-Recherche / CD-ROM (213)
- Subject
- Internet / Suchmaschine / CD-ROM (213)
Internet / Online-Recherche / CD-ROM (213)
-
Web-based search services (1995)
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- Date
- 29. 1.1996 17:46:46
- Source
- Online and CD-ROM review. 19(1995) no.4, S.223-227
-
Jascó, P.: Savvy searching starts with browsing (1999)
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- Source
- Online and CD-ROM review. 23(1999) no.3 S.169-172
-
Rudich, J.: Internet search engines on CD-ROM (1996)
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- Abstract
- Internet search engines on CD-ROM bridge the gap between printed directories and online search engines. Reviews: CyberSearch, Internet Connection '96, Mega Web directory; New Riders Official World Wide Web Yellow pages, World Wide Web Directory, and WebCompass
-
Fuld, L.M.: Will today's databases survive : a question of value (1996)
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- Abstract
- Discusses the evolution of online databases during the 1990s considering the effect of cheap information accessed through the Internet. InfoSeek includes Associated Press Online, Reuters Business Report, Commerce Business Daily and Cambridge Scientific Abstracts for a basic 9.95 dollars per month. PR Newswire offers an automated faxback system of press releases at no charge to the caller. CD-ROM directories are making online access almost obsolete. With greater numbers of sophisticated electronic competitors, survival can only be achieved through high quality access, accuracy and added value
-
Dong, X.; Su, L.T.: Search engines on the World Wide Web and information retrieval from the Internet : a review and evaluation (1997)
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- Source
- Online and CD-ROM review. 21(1997) no.2, S.67-82
-
Morgan, E.L.: Creating user-friendly electronic information systems (1997)
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- Abstract
- The effectiveness of an information system is related to its readability, browsability, searchability and interactive assistance. Interactive assistance provides customized help for particular users in particular situations. It can be proactive or restrictive. Systems have been developed for reference work and CD-ROM based bibliographic indexes. Prototype systems for the Internet include: Ask Alcuin, meta-search engines, and WebArcher
-
Poynder, R.: Web research engines? (1996)
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- Abstract
- Describes the shortcomings of search engines for the WWW comparing their current capabilities to those of the first generation CD-ROM products. Some allow phrase searching and most are improving their Boolean searching. Few allow truncation, wild cards or nested logic. They are stateless, losing previous search criteria. Unlike the indexing and classification systems for today's CD-ROMs, those for Web pages are random, unstructured and of variable quality. Considers that at best Web search engines can only offer free text searching. Discusses whether automatic data classification systems such as Infoseek Ultra can overcome the haphazard nature of the Web with neural network technology, and whether Boolean search techniques may be redundant when replaced by technology such as the Euroferret search engine. However, artificial intelligence is rarely successful on huge, varied databases. Relevance ranking and automatic query expansion still use the same simple inverted indexes. Most Web search engines do nothing more than word counting. Further complications arise with foreign languages
-
Calishain, T.; Dornfest, R.; Adam, D.J.: Google Pocket Guide (2003)
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- Date
- 22.10.2006 13:28:15
- Footnote
- Rez. in: CD Info. 2003, H.10, S.12: "Der Aufwand bei der Internet-Recherche hat sich mit guten Suchmaschinen wie Google verringert. Trotzdem verbringt der Computeranwender eine Menge Zeit mit dem Öffnen und Schließen von Webseiten, die er nie benötigt hätte. Wer die Arbeitsweise und die Möglichkeiten von Google kennt, kann die Suche besser eingrenzen und gelangt oft direkter zur gewünschten Homepage. Der Google Pocket Guide erläutert die Funktionsweise des am meisten verwendeten Suchtools, gibt Tipps zur optimalen Nutzung und liefert gleich einige konkrete Beispiele für deren Verwendung. Neben den Optionen der Erweiterten Suche widmet sich das kleine Taschenbuch auch der Syntax der Website, sodass die Befehle direkt in die Suchmaske eingegeben werden können. Auch Zusatz-Features wie die Bildersuche, der Webkatalog, die Newsgroup-Datenbank sowie der seit Kurzem auch in deutscher Sprache verfügbare News-Bereich werden behandelt. Der Google Pocket Guide erläutert kurz und bündig die wichtigsten Techniken und hilft Zeit und Aufwand zu sparen. Der brandneue Titel ist derzeit leider nur in Englisch verfügbar."
-
Belew, R.K.: Finding out about : a cognitive perspective on search engine technology and the WWW (2001)
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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.
- Pages
- XXVII, 356 S. + 1 CD-ROM
-
Poulter, A.: ¬The design of World Wide Web search engines : a critical review (1997)
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- Abstract
- Presents a state of the art review of WWW search engines from the earliest Internet precursors and noting: prblems inherent in the current range of WWW search engines; problems of searching the WWW (link persistence and lack of integrated search software); and analyzing the resulting search engine types (keyword or directory). Compares search engines of all types across their generic features (database content, retrieval software, and search interface), rather than on a search engine by search engine basis. Considers wider information access issues arising from the nature of the Internet and Web search engines and proposes a general strategy for using web search engines. Comments on the irony that a unitary global information space accessible via 1 freely accessible software package (WWW client browser) should be so balkanized by a plethora of search engines in complete reverse of the traditional world of printed, CD-ROM and online databases, where a limited number and comparatively stable range of search tools attemps to homogenize a large number of physically separate and disparate collections
-
Haubner, S.: Was uns Google vorenthält : Alternativen zum Marktführer gibt es beim Suchen im Internet kaum - Wir erklären, wie der Suchmaschinen-Gigant "Google" funktioniert. (2012)
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- Content
- Neue Entwicklungen im Netz Doch es gibt durchaus Ansätze, dem Goliath Google die Stirn zu bieten. Zu den Davids, die das versuchen, gehört Michael Schöbel. Seit 1999 betreibt er die deutsche Suchmaschine Acoon - als Gründer, Geschäftsführer und einziger Angestellter. Schöbel gibt sich jedoch keinen besonderen Illusionen hin. "Allein vom Datenumfang her kann ich mit den von Google erfassten 50 Milliarden erfassten Webseiten natürlich nicht konkurrieren." Die Erfassung koste eine Menge Geld, ebenso wie die Server, die man zum Speichern solcher Datenbestände bereitstellen müsste. Dennoch hält es der Einzelkämpfer für wichtig, "dem rein amerikanischen Blick auf die Welt eine eigene Sichtweise entgegenzusetzen." Weil Acoon auf einen vollkommen eigenständigen Suchindex setze, erhalte der Nutzer Suchergebnisse, "die gut sind, ohne dabei dem Einheitsbrei zu entsprechen." Hoffnung macht Google-Kritikern derzeit aber vor allem eine Firma, die bislang nicht unbedingt im Verdacht konterrevolutionärer Aktivitäten stand: Microsoft. Dessen Suchmaschine Bing konnte Google bereits einige Marktanteile gewinnen - freilich nicht, ohne zuvor selbst eine Reihe kleinerer Anbieter geschluckt zu haben. Auch das einst so einflussreiche Webverzeichnis Yahoo! bezieht seine Ergebnisse mittlerweile aus dem Bing-Index.
-
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
-
Perez, E.: dtSearch: the little search engine that could (2004)
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- Source
- Online. 29(2005) no.1, S.28-
-
Finden, ohne zu suchen (2004)
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- Date
- 24. 1.2004 9:28:59
- Source
- CD-Info. 2004, H.2, S.73
-
Koch, T.: Searching the Web : systematic overview over indexes (1995)
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- Pages
- S.29-61
-
Philippus, T.: Informationssuche im Internet : Tips für Profis (1997)
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- Date
- 17. 7.2002 15:29:42
-
Eggeling, T.; Kroschel, A.: Alles finden im Web (2000)
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- Date
- 9. 7.2000 14:06:22
-
Ganslmayer, K.: Per Mausklick zum Wissen der Welt : Chip Test & Technik: Lexika Online vs. Offline (2005)
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- Abstract
- Wo schlägt man im Internet-Zeitalter Wissen nach? CHIP hat für Sie herausgefunden, ob sich der Kauf eines Multimedia-Lexikons noch lohnt oder ob Sie alle Informationen genauso gut online finden. Wer braucht denn überhaupt noch Lexika? Schließlich findet sich in den unendlichen Weiten des Internets doch genug Wissen für unzählige Bücher oder DVDs - mehr, als je ein Lexikon umfassen könnte. Allerdings muss man sich die Informationen im Web erst mühsam zusammensuchen. Oder vielleicht doch nicht? Das redaktionell betreute Online-Lexikon wissen.de und die freie Enzyklopädie Wikipedia bieten zu vielen Stichwörtern die passenden Artikel - ohne langes Stöbern in Suchmaschinen-Ergebnissen. Aber können sie wirklich mit den etablierten MultimediaLexika mithalten? CHIP hat wissen.de und die deutsche Version von Wikipedia mit den drei renommiertesten Nachschlagewerken auf CD bzw. DVD verglichen: mit Microsofts Encarta, dem Brockhaus sowie Data Beckers großem Lexikon, jeweils in der aktuellen Version von 2005. In unserem Test steht die erfolgreiche Suche nach Informationen im Vordergrund - Multimedia und Extras sind uns weniger wichtig. Deshalb testen wir die preisgünstigen Standard-Versionen von Brockhaus und Encarta. Die PremiumVersionen bieten zwar umfangreiche Zusatz-Features und etwas mehr Inhalt, kosten aber auch mehr als das Doppelte. Haben die getesteten Lexika Vorteile gegenüber einer Online-Recherche per Suchmaschine? Wie gut Google mit unseren Suchbegriffen zurechtkommt, erfahren Sie im Kasten auf S. 95. Mit größtenteils kostenpflichtigen Online-Angeboten warten Encarta und Brockhaus auf. Was sie im Vergleich zur jeweiligen CD/DVD zu bieten haben, lesen Sie auf S.98.
- Date
- 26. 2.2005 18:28:13
