Search (540 results, page 1 of 27)

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Abstract

Evaluates the performance of 8 major Internet search engines in answering 21 real reference questions and 5 made up subject questions. Reports on the retrieval and relevancy ranking abilities of the search engines. Concludes that the search engines did not produce good results for the reference questions unlike for the subject questions. The best engines are identified by type of questions, with Infoseek best for the subject questions, and OpenText best for refrence questions

Date

25.12.1998 19:22:51

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Abstract

Internet Newsgroup archives on services such as DejaNews offer important sources of information that may not be found elsewhere online. Describes the content of the DejaNews Database which goes back to 1995 and covers more than 14,000 newsgroups. There are 2 search options: quick search and power search. Most Web search engines offer links to DejaNews, but AltaVista offers a smaller alternative and supplement to DejaNews. Reference.COM also offers a searchable archive, as well as a useful current awareness service which allows setting up multiple searches under the user profile tab

Source

Online. 22(1998) no.4, S.22-28

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Abstract

Surfing the World Wide Web used to be cool, dude, real cool. But things have gotten hot - so hot that finding something useful an the Web is no longer cool. It is suffocating Web searchers in the smoke and debris of mountain-sized lists of hits, decisions about which search engines they should use, whether they will get lost in the dizzying maze of a subject directory, use the right syntax for the search engine at hand, enter keywords that are likely to retrieve hits an the topics they have in mind, or enlist a browser that has sufficient functionality to display the most promising hits. When it comes to Web searching, in a few short years we have gone from the cool image of surfing the Web into the frying pan of searching the Web. We can turn down the heat by rethinking what Web searchers are doing and introduce some order into the chaos. Web search strategies that are tool-based-oriented to specific Web searching tools such as search en gines, subject directories, and meta search engines-have been widely promoted, and these strategies are just not working. It is time to dissect what Web searching tools expect from searchers and adjust our search strategies to these new tools. This discussion offers Web searchers help in the form of search strategies that are based an strategies that librarians have been using for a long time to search commercial information retrieval systems like Dialog, NEXIS, Wilsonline, FirstSearch, and Data-Star.

Content

"Web searching is different from searching commercial IR systems. We can learn from search strategies recommended for searching IR systems, but most won't be effective for Web searching. Web searchers need strate gies that let search engines do the job they were designed to do. This article presents six new Web searching strategies that do just that."

Date

22. 9.1997 19:16:05

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Abstract

Examines some of the advanced tools, techniques, methods and standards related to the Internet and WWW which consist of hybrids of documents and software, called 'document program hybrids'. Early Internet systems were based on having documents on one side and software on the other, neatly separated, apart from one another and without much interaction, so that the static document can also exist without computers and networks. Documentation program hybrids blur this classical distinction and all components are integrated, interwoven and exist in synergy with each other. Illustrates the techniques with particular reference to practical examples, including: dara collections and dedicated software; advanced HTML features on the WWW, multimedia viewer and plug in software for Internet and WWW browsers; VRML; interaction through a Web server with other servers and with instruments; adaptive hypertext provided by the server; 'webbots' or 'knowbots' or 'searchbots' or 'metasearch engines' or intelligent software agents; Sun's Java; Microsoft's ActiveX; program scripts for HTML and Web browsers; cookies; and Internet push technology with Webcasting channels

Source

Online and CD-ROM review. 22(1998) no.2, S.55-72

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Abstract

The purpose of this paper is to identify, describe, evaluate and compare South African search engines, directories and portals. The comparative evaluation entailed analysis of six search engines by means of a checklist of desirable features, as well as a performance test by means of sample searches. The following aspects and features are covered in the checklist: database characteristics, search facilities and techniques, search results and portal services. In the performance test the local search engines were also compared with three international ones. Aardvark was rated the best local search engine judging by its performance in the sample searches, but it was outperformed by two of the international engines, Alta Vista and FAST, with regard to the total number of relevant hits retrieved. The results of the investigation will be of use to searchers in their selection of appropriate search tools and to search engine developers in the process of improving their systems

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Abstract

The Internet can be a valuable tool allowing distance learners to access information not available locally. Search engines are the most common means of locating relevant information an the Internet, but to use them efficiently students should be taught the basics of searching and how to evaluate the results. This article briefly reviews how Search engines work, studies comparing Search engines, and criteria useful in evaluating the quality of returned Web pages. Research indicates there are statistical differences in the precision of Search engines, with AltaVista ranking high in several studies. When evaluating the quality of Web pages, standard criteria used in evaluating print resources is appropriate, as well as additional criteria which relate to the Web site itself. Giving distance learners training in how to use Search engines and how to evaluate the results will allow them to access relevant information efficiently while ensuring that it is of adequate quality.

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Abstract

Aimed at information and communication professionals, scholars and students, Google and the Digital Divide: The Biases of Online Knowledge provides invaluable insight into the significant role that search engines play in growing the digital divide between individuals, organizations, and states. With a specific focus on Google, author Elad Segev explains the concept of the digital divide and the effects that today's online environment has on knowledge bias, power, and control. Using innovative methods and research approaches, Segev compares the popular search queries in Google and Yahoo in the United States and other countries and analyzes the various biases in Google News and Google Earth. Google and the Digital Divide shows the many ways in which users manipulate Google's information across different countries, as well as dataset and classification systems, economic and political value indexes, specific search indexes, locality of use indexes, and much more. Segev presents important new social and political perspectives to illustrate the challenges brought about by search engines, and explains the resultant political, communicative, commercial, and international implications.

Content

Inhalt: Power, communication and the internet -- The structure and power of search engines -- Google and the politics of online searching -- Users and uses of Google's information -- Mass media channels and the world of Google News -- Google's global mapping

LCSH

Search engines

Subject

Search engines

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Abstract

The paradox of the Invisible Web is that it's easy to understand why it exists, but it's very hard to actually define in concrete, specific terms. In a nutshell, the Invisible Web consists of content that's been excluded from general-purpose search engines and Web directories such as Lycos and LookSmart-and yes, even Google. There's nothing inherently "invisible" about this content. But since this content is not easily located with the information-seeking tools used by most Web users, it's effectively invisible because it's so difficult to find unless you know exactly where to look. In this paper, we define the Invisible Web and delve into the reasons search engines can't "see" its content. We also discuss the four different "types" of invisibility, ranging from the "opaque" Web which is relatively accessible to the searcher, to the truly invisible Web, which requires specialized finding aids to access effectively.

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Abstract

Directed Query Engines, an emerging class of search engine specifically designed to access distributed resources on the deep web, offer the opportunity to create inexpensive digital libraries. Already, one such engine, Distributed Explorer, has been used to select and assemble high quality information resources and incorporate them into publicly available systems for the physical sciences. By nesting Directed Query Engines so that one query launches several other engines in a cascading fashion, enormous virtual collections may soon be assembled to form a comprehensive information infrastructure for the physical sciences. Once a Directed Query Engine has been configured for a set of information resources, distributed alerts tools can provide patrons with personalized, profile-based notices of recent additions to any of the selected resources. Due to the potentially enormous size and scope of Directed Query Engine applications, consideration must be given to issues surrounding the representation of large quantities of information from multiple, heterogeneous sources.

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Abstract

Reports results of searching the WWW for the term 'medican informatics' on 6 Web search engines and briefly reviews a number of selected Web site focusing on medical informatics auch as http://www.cpmc.columbia.edu/edu/textbook/ and http://www.hslib.washington.edu/informatics

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Abstract

Reports the first Internet Librarian forum sponsored by Information Today in cooperation with the Special Libraries Association in Montery, CA, 17-19 Nov 1997, focusing on the following sessions: Librarians talk to search engines; filtering tools; from pull to push; making your WWW site accessible

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Abstract

The WWW is a rich source of information, but is disorganised. Automatic search engines are imperfect, but probably adequate for most searches which only require a result, not comprehensiveness. Librarians can use their information organizing skills to create home pages

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Abstract

Considers trends on the WWW for 1997. Covers: technology and software developments, growth in training, industry changes, growth in distance education, evolution of search engines, turnkey pages and central site quality control, and further publishing about the Internet

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Abstract

The WWW is bringing a vast array of art resources to libraries worldwide providing access to copious information and images. Describes art gallery, art museum and other art sites on the Web, and draws attention to general search engines and directory sites

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Abstract

Majority of Austrian research relevant information available an the Web these days can be indexed by web full-text search engines. But there are still several sources of valuable information, which cannot be indexed directly. One of effective ways of getting this information to end-users is using metasearch technique. For better understanding it is important to say that metasearch engine does not use its own index. It collects search results provided by other search engines, and builds a common hit list for end users. Our prototype provides access to five sources of research relevant information available an the Austrian web.

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Abstract

The degree of structure of Web content is the determining factor for the types of functionality that search engines can provide. The more well structured the Web content is, the easier it is for search engines to understand Web content and provide advanced functionality, such as faceted filtering or the aggregation of content from multiple Web sites, based on this understanding. Today, most Web sites are generated from structured data that is stored in relational databases. Thus, it does not require too much extra effort for Web sites to publish this structured data directly on the Web in addition to HTML pages, and thus help search engines to understand Web content and provide improved functionality. An early approach to realize this idea and help search engines to understand Web content is Microformats, a technique for markingup structured data about specific types on entities-such as tags, blog posts, people, or reviews-within HTML pages. As Microformats are focused on a few entity types, the World Wide Web Consortium (W3C) started in 2004 to standardize RDFa as an alternative, more generic language for embedding any type of data into HTML pages. Today, major search engines such as Google, Yahoo, and Bing extract Microformat and RDFa data describing products, reviews, persons, events, and recipes from Web pages and use the extracted data to improve the user's search experience. The search engines have started to aggregate structured data from different Web sites and augment their search results with these aggregated information units in the form of rich snippets which combine, for instance, data This chapter gives an overview of the topology of the Web of Data that has been created by publishing data on the Web using the microformats RDFa, Microdata and Linked Data publishing techniques.

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Content

"Hobbyköche sind begeistert, Teenager, die sonst nur am Computerbildschirm kleben, interessieren sich plötzlich für Bücher, und Autoren werden nervös: Mit einer neuartigen Internet-Suchmaschine sorgt der Onlinebuchhändler Amazon.com in den USA für Furore und mischt den umkämpften Markt der "Search Engines" auf. Die im Oktober eingeführte Suchmaschine "Search Inside the Bock" ("Suche innerhalb des Buches!", englische Informationen unter http://www.amazon.com/exec/ obidos/tg/browse/-/10197041/002-3913532 0581613) stößt in eine neue Dimension vor. Während die meisten Suchmaschinen bisher bei einem gesuchten Titel Halt machten, blättert Amazons Suchmaschine das Buch förmlich auf und erlaubt das digitale Durchforsten ganzer Werke - zumindest von denen, die von Amazon eingescannt wurden - und das sind immerhin schon 120 000 Bücher mit 33 Millionen Seiten. Ist als Suchbegriff etwa" Oliver Twist", eingegeben, tauchen die Seiten auf, auf denen der Held des Romans von Charles Dickens erscheint. Von diesen Seiten aus können mit einem Passwort registrierte Kunden dann sogar weiter blättern und so bis zu 20 Prozent eines Buchs am Bildschirm durchschmökern. Ein neuer Kaufanreiz? Ob und wann die Suchmaschine auf dem deutschen Markt eingeführt wird, lässt Amazon offen. "Darüber spekulieren wir nicht", sagte eine Sprecherin des Unternehmens in Seattle. Amazon erhofft sich von dem neuen Service vor allem einen Kaufanreiz. Erste Zahlen scheinen dem Unternehmen von Jeff Bezos Recht zu geben. Bücher, die von der Suchmaschine erfasst wurden, verkauften sich zumindest in den ersten Tagen nach der Markteinführung deutlich besser als die anderen Werke. Bisher hat Amazon Verträge mit 190 Verlagen getroffen und deren Werke elektronisch abrufbar gemacht. Nur wenige Unternehmen sperrten sich aus Sorge vor Verkaufseinbußen oder einer möglichen Verletzung von Urheberrechten gegen das Einscannen ihrer Bücher. 15 Autoren forderten den Online-Riesen allerdings auf, ihre Bücher von der Suchmaschine auszunehmen. Besondere Sorge bereitet Amazons Erfindung einigen Sachbuchverlagen. So nutzen in den USA unter anderem Hobbyköche die neue Suchmaschine mit Begeisterung. Denn sie können den oft teuren Kochbüchern ihre Lieblingsrezepte entnehmen und dann auf den Kauf verzichten. "Kochbücher werden oft für ein bestimmtes Rezept gekauft", erklärte Nach Waxman, der Besitzer eines Kochbuchladens in New York der "Washington Post". Wenn sie das Rezept aber schon haben, dann könnten sie leicht sagen, "ich habe alles, was ich brauche", stellt Waxman besorgt fest. Auch für Lexika und andere teure Sachbücher, die etwa von Schülern oder College-Studenten für ihre Arbeiten durchsucht werden, könnte dies zutreffen.

Date

3. 5.1997 8:44:22