Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Klassifikation på webben
University of Borås, Swedish School of Library and Information Science.
2001 (Swedish)Independent thesis Advanced level (degree of Master (One Year))Student thesisAlternative title
Classification on the Web (English)
Abstract [en]

The thesis concerns the use of classification schemes for organising resources in subject-based hierarchical search-services on the web. The aim is to investigate the different kinds of classification that are used, which fall into two groups: established respectively new classification schemes. This is attained by studying literature and the websites of each search-service. The prospects for using classification in a web-environment are discussed and divided into three major groups: browsing, control and cross-classification. One question at issue concerns how an established scheme manages to organise web-resources and whether this classification differs from the classification of new schemes and in what way. The BUBL LINK search-service makes use of the Dewey Decimal Classification DDC and exemplifies the application of an established classification scheme on the web. Yahoo! represents a non-established scheme. A presentation of the schemes, including the DDC, is done with the intention to achieve an understanding of the essential theoretical principles behind them. The classification schemes of BUBL LINK and Yahoo! are analysed with the purpose to discern the basic characteristics of each scheme which are illustrated by examples from the classification and then compared. The thesis ends in a discussion where flexibility, updating, notation, verbal description, subject-analysis and control are pointed out as important aspects. Which classification to use depends highly upon the aim and target group of the particular search-service. BUBL LINK and Yahoo! are two representative examples demonstrating how classification can be used on the web. Nr 76 Erik Åkesson: Nyhetssöktjänster på webben: En utvärdering av News Index, Excite News Search och Ananova News search engines on the Web: An evaluation of News Index, Excite News Search and Ananova [55]PDF-version The purpose of this study is to examine the retrieval performance of three search engines, specialized in retrieving news articles: News Index, Excite News Search and Ananova. Thirty questions, grouped into three categories politics, economy and sports, were used and the first twenty documents for each question were examined. The questions used were designed to be as current as possible and efforts were made to perform the searches with as little time span as possible between each search engine. The precision of the search engines was determined for each of the questions as well as for each category and for the combined categories. In measuring precision an average was calculated, intended to favour search engines that place its relevant documents early in the ranked list. The relevance of the retrieved documents was evaluated using a three-grade scale. Irrelevant articles and duplicates were given 0 points, partially relevant documents were given 0,5 points and those judged to be highly relevant were given 1 point. The results of the study show surprisingly high precision from two of the search engines, Excite and News Index with the former performing slightly better than the latter. Ananova performed considerably worse than the other two. One possible reason for the high precision observed is the relatively low complexity of the documents retrieved compared to web pages in general. When comparing the different categories of questions one notable result was that all search engines performed considerably worse in the "economy"-category. Possible reasons for this are, apart from a higher number of duplicates, a shortage of relevant articles for the questions in this category as well as possible differences between either the documents retrieved in the different categories, or the web pages publishing them.

Place, publisher, year, edition, pages
University College of Borås. Swedish School of Library and Information Science (SSLIS) , 2001.
Series
Magisteruppsats i biblioteks- och informationsvetenskap vid Bibliotekshögskolan/Biblioteks- och informationsvetenskap, ISSN 1404-0891 ; 2001:75
Keywords [en]
library and information science
Keywords [sv]
biblioteks- och informationsvetenskap
National Category
Social Sciences
Identifiers
URN: urn:nbn:se:hb:diva-20610Local ID: 2320/845OAI: oai:DiVA.org:hb-20610DiVA, id: diva2:1312544
Note
Uppsatsnivå: DAvailable from: 2019-04-30 Created: 2019-04-30

Open Access in DiVA

fulltext(354 kB)8 downloads
File information
File name FULLTEXT01.pdfFile size 354 kBChecksum SHA-512
5344b4edc0f47f0ac6f6fd7eebd059d2c92c718bc90435e825cbf07f8f79c97b8f66c241c67b9a79e443410ff68b75f54cb02b279d355918521ee667b7b43932
Type fulltextMimetype application/pdf

By organisation
Swedish School of Library and Information Science
Social Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 8 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 4 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf