Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.
© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)
1Mettrop, W. ; Nieuwenhuysen, P.: Internet search engines : fluctuations in document accessibility.
In: Journal of documentation. 57(2001) no.5, S.623-651.
Abstract: An empirical investigation of the consistency of retrieval through Internet search engines is reported. Thirteen engines are evaluated: AltaVista, EuroFerret, Excite, HotBot, InfoSeek, Lycos, MSN, NorthernLight, Snap, WebCrawler and three national Dutch engines: Ilse, Search.nl and Vindex. The focus is on a characteristics related to size: the degree of consistency to which an engine retrieves documents. Does an engine always present the same relevant documents that are, or were, available in its databases? We observed and identified three types of fluctuations in the result sets of several kinds of searches, many of them significant. These should be taken into account by users who apply an Internet search engine, for instance to retrieve as many relevant documents as possible, or to retrieve a document that was already found in a previous search, or to perform scientometric/bibliometric measurements. The fluctuations should also be considered as a complication of other research on the behaviour and performance of Internet search engines. In conclusion: in view of the increasing importance of the Internet as a publication/communication medium, the fluctuations in the result sets of Internet search engines can no longer be neglected.
Anmerkung: Vgl. auch: http://www.emeraldinsight.com/10.1108/EUM0000000007096.
Themenfeld: Suchmaschinen ; Retrievalstudien
Objekt: AltaVista ; EuroFerret ; Excite ; HotBot ; InfoSeek ; Lycos ; MSN ; NorthernLight ; Snap ; WebCrawler ; Ilse ; Search.nl ; Vindex
2Sieverts, E.: Slimmerds onder de zoekmachines.
In: Informatie professional. 2(1998) no.2, S.32-33.
Abstract: Web search engines generally use best match search techniques, rather than traditional Boolean operators. Precision in searching will depend on the numbers of selected terms appearing in a document and the inclusion of less-common words in the search string. Users are, therefore, recommended to enter as many words as possible. ExCite and WebCrawler lead users from a relevant document to other documents containing similar word patterns, while MusCat and EuroFerret suggest additional keywords for searching
Anmerkung: Übers. d. Titels: Top of the class among the search engines
Objekt: ExCite ; WebCrawler ; MusCat ; EuroFerret