Search (724 results, page 1 of 37)

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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/.

Source

WWW '02: Proceedings of the 11th International Conference on World Wide Web, May 7-11, 2002, Honolulu, Hawaii, USA

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Abstract

Nutch is an open-source Web search engine that can be used at global, local, and even personal scale. Its initial design goal was to enable a transparent alternative for global Web search in the public interest - one of its signature features is the ability to "explain" its result rankings. Recent work has emphasized how it can also be used for intranets; by local communities with richer data models, such as the Creative Commons metadata-enabled search for licensed content; on a personal scale to index a user's files, email, and web-surfing history; and we also report on several other research projects built on Nutch. In this paper, we present how the architecture of the Nutch system enables it to be more flexible and scalable than other comparable systems today.

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Content

Zum Vorwurf, Wikia Search sei zu früh auf den Markt geworfen worden, sagt Wales: "Es dreht sich alles um die Beteiligung der Öffentlichkeit. Als Open-Source-Projekt müssen wir es der Öffentlichkeit zur Verfügung stellen, damit es verbessert werden kann." Auf engagierte Freiwillige setzt Wales auch bei der Einbindung weiterer Sprachen. Bis dato kann nämlich fast nur mit englischen Begriffen gearbeitet werden. Wales ist zuversichtlich, dass dies in wenigen Monaten anders sein wird. Das muss es auch, wenn Wikia der Gefahr entgehen will, dass sich angesichts all der Unzulänglichkeiten Nutzer von der Suchmaschine abwenden - und sich so der menschliche Vorteil gegenüber Google in Luft auflöst. So oder so meinen Experten, dass Wikia nicht an Googles Thron rütteln wird. Das Warten auf einen neuen David im Kampf gegen den Suchmaschinen-Goliath geht weiter."

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Content

Amerikanischer Kulturimperialismus also: Es ist kaum verwunderlich, dass sich vor allem in Frankreich Widerstand regt, gibt es hier doch eine Tradition in Sachen Kapitalismus- und Globalisierungskritik. Einer der Protagonisten, Jean-Noel Jeannaney, spricht in seinem Buch "Googles Herausforderung" von einer "Diktatur des angloamerikanischen Kanons". Der Präsident der französischen Nationalbibliothek warnt vor einer Entdemokratisierung des "Weltwissens". Die Alternative liege in der Gründung einer "Europäischen Digitalen Bibliothek". Vor gut einem Jahr verabredete Frankreich mit Deutschland die Entwicklung einer europäischen Suchmaschine. Doch der Google-Killer "Quaero" steht immer noch am Anfang. Überdies wird die Beteiligung privater Unternehmen (Bertelsmann, Siemens, Thomson-Brandt ...) der befürchteten Kommerzialisierung des "Weltwissens" nur bedingt Einhalt gebieten. Was man als Preis für den Rückzug des Staates aus seiner öffentlichen Verantwortung beklagen mag. Um staatlichen Schutz wird es künftig außer bei urheberrechtlichen Fragen vor allem beim Datenschutz gehen. Das Google-Portal verfügt über einen wahren Wissensschatz, was die Bedürfnisse seiner "Besucher" angeht: Jeder Klick auf einer der Google-Sites hinterlässt eine Datenspur, die nicht nur gespeichert wird, sondern auch Dritten angeboten werden könnte. Künftig wird Google über noch mehr Daten verfügen, nachdem das Unternehmen jetzt ein eigenes Bezahlsystem entwickelt hat, das den Einkauf im Netz noch einfacher machen soll. Dass im Februar der chinesische Ableger der Suchmaschine auf Geheiß der Pekinger Regierung unliebsame Webadressen sperrte, war jedenfalls keine vertrauensbildende Maßnahme - Freiheit und Kapitalismus gehören nicht notwendig zusammen. Wobei immer auch die Konzern-Maxime gilt: Besser wir sind da, als wenn es uns nicht gäbe. Zwar kann man, wie unlängst auf einer Tagung der Friedrich-Ebert-Stiftung, die demokratiegefährdenden "digitalen Informationsmächte" beschwören: "Was wird aus dem investigativen Journalismus, wenn Recherchen bei Google beginnen und bei Yahoo aufhören?" Doch langsam: Google ist immer noch die leistungsfähigste Suchmaschine, der Gebrauch von Google ist nach wie vor kostenlos, es gibt alternative, auch nicht-kommerzielle und so genannte Metasuchmaschinen, die verschiedene Suchdienste verwenden... Und sehr wahrscheinlich wird Google wie schon Microsoft dereinst eine ernst zu nehmende Konkurrenz erwachsen. Auf die open-source-community ist, wie das Nutzer-gestützte Online-Lexikon Wikipedia zeigt, wenn schon nicht steter Verlass, so doch in jedem Fall Hoffnung zu setzen."

Date

12. 2.1996 22:34:46

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Abstract

This paper uses a mix of qualitative and quantitative methodology to analyse differences between Finnish and American web searchers (n=27 per country) in their choice of initial search strategies (direct address, subject directory and search engines) and their reasoning underlying these choices, with data gathered via a questionnaire. The paper looks at these differences for four types of questions with two variables: closed/open and predictable/unpredictable source of answer (n=16 questions per searcher; total n=864 questions). The paper found significant differences between the two groups' initial search strategies and for three of the four types of questions. The reasoning varied across countries and questions as well, with Finns mentioning fewer reasons although both groups mentioned in aggregate a total of 1,284 reasons in twenty-four reason categories. The reasoning indicated that both country groups considered not only question-related reasons but also source- and search-strategy related reasons in making their decision. The research raises questions about considering cultural differences in designing web search access mechanisms.

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Abstract

Modern search engines have been moving away from simplistic interfaces that aimed at satisfying a user's need with a single-shot query. Interactive features are now integral parts of web search engines. However, generating good query modification suggestions remains a challenging issue. Query log analysis is one of the major strands of work in this direction. Although much research has been performed on query logs collected on the web as a whole, query log analysis to enhance search on smaller and more focused collections has attracted less attention, despite its increasing practical importance. In this article, we report on a systematic study of different query modification methods applied to a substantial query log collected on a local website that already uses an interactive search engine. We conducted experiments in which we asked users to assess the relevance of potential query modification suggestions that have been constructed using a range of log analysis methods and different baseline approaches. The experimental results demonstrate the usefulness of log analysis to extract query modification suggestions. Furthermore, our experiments demonstrate that a more fine-grained approach than grouping search requests into sessions allows for extraction of better refinement terms from query log files.

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BK

05.38 Neue elektronische Medien <Kommunikationswissenschaft>

Classification

05.38 Neue elektronische Medien <Kommunikationswissenschaft>

RSWK

World Wide Web / Suchmaschine
Suchmaschine / Web Site / Ranking

Subject

World Wide Web / Suchmaschine
Suchmaschine / Web Site / Ranking

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Abstract

2nd in a series of articles examining selected WWW searching engines. Reviews LiveLink Intranet and Open Text Index from Open Text Corporation, Harvest Broker from the Internet Research Task Force Research Group on Resource Discovery at the University of Colorado, Boulder, USA, and 2ASK from AtlasNet, Inc.

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Content

"Zehn Jahre sind eine Ewigkeit in einem Geschäft, das es erst seit neun Jahren gibt. Und doch haben Yahoo und Microsoft eine Kooperation für diese Ewigkeit verabredet. Der Deal ist ein Zuchtprogramm. Gezüchtet werden soll der Internetnutzer der Zukunft, und das braucht Zeit. Dieser künftige Internetnutzer soll vor allem eins: Geld bringen. Geld von anderen Firmen in die Taschen vom Yahoo und Microsoft. Wie das geht, wissen beide Unternehmen seit dem Jahr 2000, als Google die Vermarktung von Online-Anzeigen revolutionierte. Die Idee, dem Nutzer nur solche Werbung anzuzeigen, die zu seinen Suchbegriffen passt, ist bis heute der Ausgangspunkt von Googles astronomischen Gewinnen und gilt auch für die Zukunft als größte Geldquelle im Netz. Voraussetzung ist, dass die Werbung möglichst präzise an jedne einzelnen Benutzer angepasst wird, damit die Preise für Anzeigen nicht abstürzen. Google sammelt dafür auch Daten über seine populären Dienste Youtube oder Blogger.com. Yahoo tut das gleiche, etwa mit seiner Fotocommunity Flickr. In diesem Zusammenhang ergibt die langfristige Partnerschaft von Yahoo und Microsoft einen Sinn. Der Softwareriese hat viel Geld in die Entwicklung seiner neuen Suchmaschine Bing investiert und wird dies auch in Zukunft tun. Yahoo spart sich diese Ausgaben und konzentriert sich auf sein neues Profil als Anbieter von Online-Inhalten und -Diensten.
Zusammen soll das ein Konglomerat ergeben, dass es technisch und inhaltlich mit Google aufnehmen kann. Aufnehmen heißt erstens, die Allgegenwärtigkeit von Google-Diensten im Netz angreifen zu können und möglichst viele Internetnutzer an sich zu binden. Aufnehmen heißt zweitens, diese Nutzer eben so gut ausspionieren zu können wie Google das tut. Bausteine für die komplette Durchleuchtung ihrer Nutzer existieren schon bei allen drei Unternehmen. Es sind kleine, unauffällige Links auf ihren Startseiten. Die Bausteine heißen iGoogle, My MSN und MyYahoo. Sie sind die Zukunft der Internetnutzung, so wie sie sich Google, Yahoo und Microsoft vorstellen. Hinter allen drei Links stehen personalisierbare Startseiten, mit denen sich der Nutzer mehr oder weniger seine gesamte Online-Präsenz in ein einziges Browserfenster holt, das er für seine Standardaktivitäten dann kaum noch verlassen muss. Suchmaschine, aktuelle Nachrichten, E-Mails, Messenger oder virtuelle Notizzettel - alles individuell kombinierbar, und alles auf einen Blick. Bezahlen muss der Nutzer dafür nicht, Mitmachen kostet nur eine E-Mail-Adresse und ein Passwort. Nach dem Log-in beginnt das Profiling. Google arbeitet sogar schon am übernächsten Schritt. Der Konzern hat jüngst ein eigenes Betriebssystem angekündigt, das weitgehend netzbasiert arbeiten soll. Dann werden im Browserfenster zusätzlich noch Textverarbeitungsprogramme und Media-Player laufen. Briefe und Tabellen speichert der Nutzer dann nicht mehr auf der Festplatte ab, sondern auf Googles Servern.
So entstehen noch viel mehr Daten, die einem Nutzer zugeordnet werden können. Wie genau diese weiterverarbeitet und an dritte verkauft werden, kann niemand nachvollziehen. Wer sich darauf einlässt, gibt die Hoheit über seine persönlichen Daten ab und damit ein Grundrecht. Aus informationeller Selbstbestimmung wird informationelle Fremdbestimmung. Es ist natürlich das gute Recht eines jeden, dieses Grundrecht in den Wind zu schlagen. Für viele, nicht nur junge Menschen, ist der Austausch von Informationen aller Art selbstverständlich geworden, um Kontakte zu erhalten und soziale und geschäftliche Netze zu knüpfen. Diejenigen, die andere per Internet nicht nur jederzeit über ihren Gemütszustand, sondern sogar über ihren genauen Aufenthaltsort unterrichten, empfinden personalisierte Werbung möglicherweise sogar als angenehm. Wer aber den Gedanken unheimlich findet, dass jede Firma der Welt einen Datensatz erwerben kann, der Auskunft über seine Wünsche, Neigungen, Fantasien, Krankheiten und Beziehungen gibt, der muss den Log-in verweigern, auch wenn alle Welt freudig mitmacht. Der Preis für den Selbst(-Daten)schutz kann durchaus die soziale Ausgrenzung im Netz sein. Der Internetnutzer der Zukunft wird - so lautet der Plan von Google, Yahoo und Microsoft - einer großen Versuchung ausgesetzt sein: Alles aus einer Hand. Oder anders gesagt: Alles in eine Hand."

Date

17. 7.1996 9:33:22

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Content

"Es ist ein Start mit verschiedenen Schwächen: Der neue Google-Konkurrent "Wikia Search" verschreckt den User in seiner aktuellen Vor-abversion mit fehlerhaften Links, fehlenden Ergebnissen oder auch fragwürdigen Seitenbewertungen. Trotzdem bietet die neue Suchmaschine des Wikipedia-Gründers Jimmy Wales schon jetzt einen unschätzbaren Vorteil gegenüber dein Branchenprimus Google: Wikia Search legt den Nutzern offen, wie die Suchergebnisse zustande kommen. Sie setzt nämlich OpenSource-Programme ein - etwa den Webcrawler Grub. Dessen Algorithmen liegen für jedermann offen einsehbar im Web. Wikia Search fordert gar zum aktiven Mitmachen auf: Die Surfer können angezeigte Links bewerten Lind so die Rangfolge der Ergebnisse beeinflussen. Die Suchmaschine soll die Ergebnisse mit der Zeit besser nach Relevanz und Qualität sortieren, verspricht das Entwicklerteam. Derzeit speichert die Seite Bewertungen durch User jedoch noch nicht ab. Zusätzlich zeigt Wikia Search, passend zu den Suchbegriffen, jeweils einen kurzen Übersichtsartikel an, der allgemeine Informationen enthält. Sollte so ein Text noch fehlen, kann ganz einfach per Mausklick ein neues Dokument angelegt werden. Praktisch dabei: Jeder Nutzer hat die Möglichkeit, den Inhalt ohne Anmeldung zu bearbeiten und zu erweitern. Eine Alternative zur normalen Suche soll die »Whitelist« sein. Darin können User eine Art Webseiten-Kata-log anlegen, der für bessere Suchergebnisse sorgen soll. Die Idee einer offenen und nutzerorientierten Suchmaschine klingt vielversprechend - eine ernsthafte Konkurrenz für etablierte Suchmaschinen wie Google kann Wikia Search allerdings noch nicht sein. Denn die neue Websuche ist abhängig von der Community und ihrer Mitarbeit an dem Projekt. Dass so ein Ansatz funktionieren kann, hat die Online-Enzyklopädie Wikipedia immerhin gezeigt."

Source

Chip. 2008, H.3, S.22

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Abstract

The application of clustering to Web search engine technology is a novel approach that offers structure to the information deluge often faced by Web searchers. Clustering methods have been well studied in research labs; however, real user searching with clustering systems in operational Web environments is not well understood. This article reports on results from a transaction log analysis of Vivisimo.com, which is a Web meta-search engine that dynamically clusters users' search results. A transaction log analysis was conducted on 2-week's worth of data collected from March 28 to April 4 and April 25 to May 2, 2004, representing 100% of site traffic during these periods and 2,029,734 queries overall. The results show that the highest percentage of queries contained two terms. The highest percentage of search sessions contained one query and was less than 1 minute in duration. Almost half of user interactions with clusters consisted of displaying a cluster's result set, and a small percentage of interactions showed cluster tree expansion. Findings show that 11.1% of search sessions were multitasking searches, and there are a broad variety of search topics in multitasking search sessions. Other searching interactions and statistics on repeat users of the search engine are reported. These results provide insights into search characteristics with a cluster-based Web search engine and extend research into Web searching trends.

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Abstract

Creates an open, metadata aware system for distributed, collaborative WWW indexing. The system has 3 main components: a harvester (for collecting information), a database (for making the collection searchable), and a user interface (for making the information available). all components can be distributed across networked computers, thus supporting scalability. The system is metadata aware and thus allows searches on several fields including title, document author and URL. Nordic Web Index (NWI) is an application using this system to create a regional Nordic Web-indexing service. NWI is built using 5 collaborating service points within the Nordic countries. The NWI databases can be used to build additional services

Date

1. 8.1996 22:08:06

Footnote

Contribution to a special issue devoted to the Proceedings of the 7th International World Wide Web Conference, held 14-18 April 1998, Brisbane, Australia

Object

Nordic Web Index

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BK

05.38 Neue elektronische Medien <Kommunikationswissenschaft>

Classification

05.38 Neue elektronische Medien <Kommunikationswissenschaft>

RSWK

World Wide Web / Suchmaschine
Suchmaschine / Web Site / Ranking

Subject

World Wide Web / Suchmaschine
Suchmaschine / Web Site / Ranking

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Abstract

Major Web search engines, such as AItaVista, are essential tools in the quest to locate online information. This article reports research that used transaction log analysis to examine the characteristics and changes in AItaVista Web searching that occurred from 1998 to 2002. The research questions we examined are (1) What are the changes in AItaVista Web searching from 1998 to 2002? (2) What are the current characteristics of AItaVista searching, including the duration and frequency of search sessions? (3) What changes in the information needs of AItaVista users occurred between 1998 and 2002? The results of our research show (1) a move toward more interactivity with increases in session and query length, (2) with 70% of session durations at 5 minutes or less, the frequency of interaction is increasing, but it is happening very quickly, and (3) a broadening range of Web searchers' information needs, with the most frequent terms accounting for less than 1% of total term usage. We discuss the implications of these findings for the development of Web search engines.

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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

Subject

Web search engines

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Abstract

Etwa eine Milliarde Seiten zirkulieren im Internet - entschieden zu viel, um den Überblick zu behalten. virtuelle Kataloge wie Web.de sortieren das Chaos und stauchen das WWW auf Normalmass zurecht. Der Bedarf nach Ordnung und Struktur im Datennetz muss gewaltig sein: 100.000 neue Benutzer registrieren sich pro Woche bei Web.de

Date

18. 1.1997 12:15:22

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Abstract

This research is part of the ongoing study to better understand web page ranking on the web. It looks at a web page as a graph structure or a web graph, and tries to classify different web graphs in the new coordinate space: (out-degree, in-degree). The out-degree coordinate od is defined as the number of outgoing web pages from a given web page. The in-degree id coordinate is the number of web pages that point to a given web page. In this new coordinate space a metric is built to classify how close or far different web graphs are. Google's web ranking algorithm (Brin & Page, 1998) on ranking web pages is applied in this new coordinate space. The results of the algorithm has been modified to fit different topological web graph structures. Also the algorithm was not successful in the case of general web graphs and new ranking web algorithms have to be considered. This study does not look at enhancing web ranking by adding any contextual information. It only considers web links as a source to web page ranking. The author believes that understanding the underlying web page as a graph will help design better ranking web algorithms, enhance retrieval and web performance, and recommends using graphs as a part of visual aid for browsing engine designers

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Abstract

A large number of studies have investigated the transaction log of general-purpose search engines such as Excite and AItaVista, but few studies have reported an the analysis of search logs for search engines that are limited to particular Web sites, namely, Web site search engines. In this article, we report our research an analyzing the search logs of the search engine of the Utah state government Web site. Our results show that some statistics, such as the number of search terms per query, of Web users are the same for general-purpose search engines and Web site search engines, but others, such as the search topics and the terms used, are considerably different. Possible reasons for the differences include the focused domain of Web site search engines and users' different information needs. The findings are useful for Web site developers to improve the performance of their services provided an the Web and for researchers to conduct further research in this area. The analysis also can be applied in e-government research by investigating how information should be delivered to users in government Web sites.

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Abstract

The World Wide Web was created in 1989, but it has already become a major information channel and source, influencing our everyday lives, commercial transactions, and scientific communication, to mention just a few areas. The seventeenth-century philosopher Descartes proclaimed, "I think, therefore I am" (cogito, ergo sum). Today the Web is such an integral part of our lives that we could rephrase Descartes' statement as "I have a Web presence, therefore I am." Because many people, companies, and organizations take this notion seriously, in addition to more substantial reasons for publishing information an the Web, the number of Web pages is in the billions and growing constantly. However, it is not sufficient to have a Web presence; tools that enable users to locate Web pages are needed as well. The major tools for discovering and locating information an the Web are search engines. This review discusses the use of Web search engines in information science research. Before going into detail, we should define the terms "information science," "Web search engine," and "use" in the context of this review.

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Abstract

The World Wide Web is a popular and interactive medium used to collect, disseminate, and access an increasingly huge amount of information, which constitutes the mainstay of the so-called information and knowledge society. Because of its spectacular growth, related to both Web resources (pages, sites, and services) and number of users, the Web is nowadays the main information repository and provides some automatic systems for locating, accessing, and retrieving information. However, an open and crucial question remains: how to provide fast and effective retrieval of the information relevant to specific users' needs. This is a very hard and complex task, since it is pervaded with subjectivity, vagueness, and uncertainty. The expression soft computing refers to techniques and methodologies that work synergistically with the aim of providing flexible information processing tolerant of imprecision, vagueness, partial truth, and approximation. So, soft computing represents a good candidate to design effective systems for information access and retrieval on the Web. One of the most representative tools of soft computing is fuzzy set theory. This special topic section collects research articles witnessing some recent advances in improving the processes of information access and retrieval on the Web by using soft computing tools, and in particular, by using fuzzy sets and/or integrating them with other soft computing tools. In this introductory article, we first review the problem of Web retrieval and the concept of soft computing technology. We then briefly introduce the articles in this section and conclude by highlighting some future research directions that could benefit from the use of soft computing technologies.

Date

22. 7.2006 16:59:33

Footnote

Beitrag in einer Special Topic Section on Soft Approaches to Information Retrieval and Information Access on the Web