Title / Titel: Author / Autor: Source / Quelle: Language / Sprache:

“Power Tags” in Information Retrieval Isabella Peters, Wolfgang G. Stock, Accepted for publication in Library HiTech English / Englisch

 

“Power Tags” in Information Retrieval.
Purpose – Many Web 2.0 services (including Library 2.0 catalogues) make use of folksonomies. Our essential idea is to cut off all tags in the long tail of a document-specific tag distribution. The remaining tags at the beginning of a tag distribution are considered Power Tags and form a new, additional search option in information retrieval systems.
Design/methodology/approach – In a theoretical approach the article discusses document-specific tag distributions (power law and inverse-logistic shape), the development of such distributions (Yule- Simon process and shuffling theory) and introduces search tags (besides the well-known index tags) as a possibility for generating tag distributions.
Findings – Search tags are compatible with broad and narrow folksonomies and with all knowledge organization systems (e.g., classification systems and thesauri), while index tags are only applicable in broad folksonomies. Based upon these findings, we present a sketch of an algorithm for mining and processing Power Tags in information retrieval systems.
Research limitations – This conceptual approach is in need of empirical evaluation in a concrete retrieval system.
Practical implications – Power Tags are a new search option for retrieval systems to limit the amount of hits.
Originality/value – We introduce Power Tags as a means for enhancing the precision of search results in information retrieval systems which apply folksonomies, e.g. catalogues in Library 2.0 environments.


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Isabella Peters
Institut für Sprache und Information
Abt. Informationswissenschaft
Heinrich-Heine-Universität Düsseldorf
Universitätsstr. 1
D - 40225 Düsseldorf
http://www.phil-fak.uni-duesseldorf.de/infowiss/content/mitarbeiter/peters.php

Wolfgang G. Stock
Institut für Sprache und Information
Abt. Informationswissenschaft
Heinrich-Heine-Universität Düsseldorf
Universitätsstr. 1
D - 40225 Düsseldorf
http://www.phil-fak.uni-duesseldorf.de/infowiss/content/mitarbeiter/stock.php


E-Mail:
Isabella Peters: isabella.peters@uni-duesseldorf.de
Wolfgang G. Stock: stock@phil-fak.uni-duesseldorf.de