Search (5569 results, page 2 of 279)

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Date

7.10.2002 9:22:14

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Abstract

WWW robots are programs that attempt to gather and index WWW resources. They reside on a host computer and retrieve information from sites on the WWW using standrad protocols. Gives an overview of robots, and robot generated databases. Covers: WWW Worm; Lycos, WebCrawler; AliWeb; Harvest; Jumpstation II, and Open Text Index. Also discusses Yahoo and Trade Wave which are comparable tools for resource discovery

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Abstract

Most libraries have long had their own Web sites. The longer a library has had a Web site the more likely it is that the number of pages, and the amount of information within those pages, has grown beyond what users can find simply with the navigation menu. Building a site index is a great way to help seekers find all those bits of data they might otherwise miss.

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Abstract

Citation analysis has long been used by librarians as an important tool of collection development and the advent of Internet technology and especially the WWW adds a new facet to the role played by citation analysis. One of the reasons why librarians create WWW homepages is to provide users with further sources of interest or reference and to do this libraries include links from their own homepages to other information sources. Reports current research on the analysis of WWW pages as an introduction to an examination of the homepages of 25 art libraries to determine what sites are most often included. The types of linked sites are analyzed based on 3 criteria: location, focus and evidence that the link was evaluated before the connection was establisheds

Date

10. 1.1999 16:22:37

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Abstract

Users who want to exploit all the information sources on the Web will need an efficient search and selection tool e.g. a directory or search engine. Directories list Web sites and analyze their contents. Describes the behind-the-scenes work of documentalists specialized in surfing, tracking and indexing French language sites for the directory Nomade. Describes the creation of Nomade, its functioning and indexing, and how this new profession of 'cyber-documentalist' is changing the practices and functions of information professionals as they become Internet information organizers

Date

1. 8.1996 22:01:00

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Abstract

To improve searching, filtering and processing of information on the Web, a common effort is made in the direction of metadata, defined as machine understandable information about Web resources or other things. In particular, the eXtensible Markup Language (XML) aims at providing a common syntax to emerging metadata formats. Proposes the Structured Graph Format (SGF) an XML compliant markup language based on structured graphs, for capturing Web sites' structure. Presents SGMapper, a client-site tool, which aims to facilitate navigation in large Web sites by generating highly interactive site maps using SGF metadata

Date

1. 8.1996 22:08:06

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Abstract

Authority control has long been an important part of the cataloging process. However, few studies have been conducted examining how librarians learn about it. Research conducted to date suggests that many librarians learn about authority control on the job rather than in formal classes. To offer an introduction to authority control information for librarians, an annotated bibliography is provided. It includes monographs, articles and papers, electronic discussion groups, Web sites related to professional conferences, additional Web sites related to authority control, and training offered through the Name Authority Cooperative Program and the Subject Authority Cooperative Program. A summary of possible future trends in authority control is also provided.

Date

10. 9.2000 17:38:22

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Content

Facets are an increasingly common feature of contemporary access and discovery systems. These intuitively adaptable structures seem well suited for application in information architecture and the practice of knowledge management (La Barre, 2006). As browsing and searching devices, facets function equally well on e-commerce sites, digital museum portals, and online library catalogs. This paper argues that clearly articulated principles for facets and facet analysis must draw examples from current practice while building upon heritage principles m order to scaffold the development of robust and fully faceted information infrastructures.

Date

27.12.2008 9:50:22

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Abstract

Describes the 26 entires to the 1996 Australian society of Indexers' (AusSI) Prize for Web indexes. Entries showed a variety of approaches to Web indexing and included: linear back-of-book style indexes; annotated bibliographies; Yahoo-style hierachical sites; and beautiful castles with rooms full of links. Entries were judges on ease of use of the index for a novice user, content and breadth of coverage, and usefulness at getting information that could answer questions. The winner was the Australian Parliamentary Library Index by Alan Wilson, an index to the information on the Commonwealth Parliamentary Library's Web site and from othe departments of the Australian Parliament. A brief description of each entrey is given together with its URL and the compiler's email address. All entries can be reached on the Web

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Abstract

Purpose The purpose of this paper is to design a watcher-based crawler (WBC) that has the ability of crawling static and dynamic web sites, and can download only the updated and newly added web pages. Design/methodology/approach In the proposed WBC crawler, a watcher file, which can be uploaded to the web sites servers, prepares a report that contains the addresses of the updated and the newly added web pages. In addition, the WBC is split into five units, where each unit is responsible for performing a specific crawling process. Findings Several experiments have been conducted and it has been observed that the proposed WBC increases the number of uniquely visited static and dynamic web sites as compared with the existing crawling techniques. In addition, the proposed watcher file not only allows the crawlers to visit the updated and newly web pages, but also solves the crawlers overlapping and communication problems. Originality/value The proposed WBC performs all crawling processes in the sense that it detects all updated and newly added pages automatically without any human explicit intervention or downloading the entire web sites.

Date

20. 1.2015 18:30:22

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Abstract

Purpose Academic social (question and answer) Q&A sites are now utilised by millions of scholars and researchers for seeking and sharing discipline-specific information. However, little is known about the factors that can affect their votes on the quality of an answer, nor how the discipline might influence these factors. The paper aims to discuss this issue. Design/methodology/approach Using 1,021 answers collected over three disciplines (library and information services, history of art, and astrophysics) in ResearchGate, statistical analysis is performed to identify the characteristics of high-quality academic answers, and comparisons were made across the three disciplines. In particular, two major categories of characteristics of the answer provider and answer content were extracted and examined. Findings The results reveal that high-quality answers on academic social Q&A sites tend to possess two characteristics: first, they are provided by scholars with higher academic reputations (e.g. more followers, etc.); and second, they provide objective information (e.g. longer answer with fewer subjective opinions). However, the impact of these factors varies across disciplines, e.g., objectivity is more favourable in physics than in other disciplines. Originality/value The study is envisioned to help academic Q&A sites to select and recommend high-quality answers across different disciplines, especially in a cold-start scenario where the answer has not received enough judgements from peers.

Date

20. 1.2015 18:30:22

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Abstract

Every librarian knows undergraduate students rarely evaluate the information they find in a print index, much less what comes from a computer sreen. This knowledge is compounded by the undergraduate's belief that anything coming from the Internet is the gospel truth. Is the Internet being integrated into library instruction, taught as another research tool, or taught as something soecial? Are students being taught to evaluate Internet resources? In this annotated bibliography, Hahn examines journal articles, book chapters, and Web sites that discuss the evaluation of information found through the Internet

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Abstract

The California State Library has designed and executed the California Home Page, linking its topical outline to services and information supplied by many state agencies at their WWW sites. The project included the writing of 2 indexes to the outline and its links, one by topic and one by government agency or department. Describes planning and designing the indexes, choosing an index style, working tools used, the indexing process, and maintenance of the project

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Abstract

Subject oriented information sources on the Internet remain relativley unstructured despite attempts at indexing them and despite the use of search engines to index sources in a collective database and to retrieve relevant information sources. Describes the rationale for developing a means to capture and structure Internet resources for scientific research use in a clearinghouse, and methods for retrieval, information filtering, and structuring subject orientated information sources from the Internet for specific user groups. Discusses the issues of design, maintenance, implementation of metadata, and obtaining use feedback. Cooperation among several institutions involved in the German national subject special collections (SSG) library support programme of the DFG have led to recommendations to expand this programme to include coordination of collective Internet subject information sites. In addition to the compilation of subject oriented information sites on the Internet by library and information staff, connection to other value added services serve to make processes of information searching, retrieval, acquisition, and evaluation more effective for researchers

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Abstract

Describes 4 search engines for the Internet: infoMarket Search; Yahoo and OpenText; Lycos Spider; and WebCompass. InfoMarket Search retrieves data from Web pages and information providers such as Disclosure, Information Access Company and Cambridge Scientific Abstracts. It is able to search millions of Web pages in under five seconds. Automated 'crawlers' index the complete text of Web documents. Yahoo enables users to search for specific words and phrases and conduct multilevel Boolean and weighted searches. Lycos spider offers support for HotJava and indexes 91% of the Web. WebCompass polls multiple search engines such as Lycos and InfoSeek for relevant Web pages. A personalized index of topics may be built and retrieved data stored in a format based on Microsoft Access 2.0

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Abstract

Although the role the Internet plays in globalization has been widely discussed, relatively little is known about the extent to which users in different countries visit the same Web sites. Surprisingly, no prior research in the literature has empirically addressed this topic in a systematic way. Based on the theory of life in the round and related concepts of information behavior, this article reports an attempt to fill the gap by looking at how cultural, geodemographical, and economic factors underpin the extent which people from different countries visit the same Web sites. A commonality index to measure the commonality of Web site visiting for the macrolevel, cross-country study is proposed for a large-scale empirical study using online panel data that cover 101 countries. Results from the analyses indicate that as cyberspace is obviously fractured, Internet users in countries that share a common language, religion, and social norms, that have a similar level of economic development, and that are physically nearer to one another are more likely to visit the same Web sites. The relationship between individual-level information behavior and macrolevel Internet traffic metrics is established; the former helps explain the latter whereas the latter enriches the former.

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Abstract

The paper presents the results of a study on usability methods for evaluating Web sites. It summarizes the "Heuristics for Web Communications," and reports the practical experiences with these heuristics, contrasting them with the "Keevil Index" and combining them with user testing with thinking aloud. It concludes that working with the "Heuristics for Web Communications" takes more time and effort than working with the "Keevil Index," but produces more consistent results. The heuristics proved to be applicable both in heuristic evaluation and in combination with user testing.

Content

Der Beitrag präsentiert eine Studie über Evaluationsmethoden zur WebUsability. Er beschreibt die "Heuristics for Web Communications" und berichtet von den praktischen Erfahrungen mit den Heuristiken, die mit dem "Keevil Index" verglichen und mit Benutzertests mit lautem Denken kombiniert werden. Das Ergebnis zeigt, dass eine Evaluation mit den beschriebenen Heuristiken gegenüber dem "Keevil Index" mehr Zeit und Aufwand erfordert, aber konsistentere Ergebnisse bringt. Die Heuristiken haben sich sowohl in der experten-zentrierten Evaluation als auch in Kombination mit dem Benutzertest insgesamt als geeignete Evaluationsmethode erwiesen

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Abstract

The WebQuery system offers a powerful new method for searching the Web based on connectivity and content. Examines links among the nodes returned in a keyword-based query. Rankes the nodes, giving the highest rank to the most highly connected nodes. By doing so, finds hot spots on the Web that contain information germane to a user's query. WebQuery not only ranks and filters the results of a Web query; it also extends the result set beyond what the search engine retrieves, by finding interesting sites that are highly connected to those sites returned by the original query. Even with WebQuery filering and ranking query results, the result set can be enormous. Explores techniques for visualizing the returned information and discusses the criteria for using each of the technique

Date

1. 8.1996 22:08:06

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Abstract

Reports on the Southern California Online Users Group annual workshop, which broke all previous attendance records. The topic was 'Radical redesign of reference and research', and common threads among speakers included the need for a new reference/research model that will scale with future needs, and the now common standard of round the clock service availability. Print could become a secondary medium to digital data, primarily delivered over the Internet, and that information vendors be forced to change pricing structures. Librarians from public, corporate, and academic sectors have begun building Web sites around links to their own data and to other quality sites as a means of providing 24 hour services. Vendors might consider creating new price comparison services, or offering proce guarantees, to compete with this new phenomenon

Date

22. 2.1999 18:08:25

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Abstract

Many Web sites have begun allowing users to submit items to a collection and tag them with keywords. The folksonomies built from these tags are an interesting topic that has seen little empirical research. This study compared the search information retrieval (IR) performance of folksonomies from social bookmarking Web sites against search engines and subject directories. Thirty-four participants created 103 queries for various information needs. Results from each IR system were collected and participants judged relevance. Folksonomy search results overlapped with those from the other systems, and documents found by both search engines and folksonomies were significantly more likely to be judged relevant than those returned by any single IR system type. The search engines in the study had the highest precision and recall, but the folksonomies fared surprisingly well. Del.icio.us was statistically indistinguishable from the directories in many cases. Overall the directories were more precise than the folksonomies but they had similar recall scores. Better query handling may enhance folksonomy IR performance further. The folksonomies studied were promising, and may be able to improve Web search performance.

Date

1. 8.2008 12:39:22