Avaliação do serviço de disseminação seletiva de informações do Centro de Informações Nucleares em relação á precisão, recuperação e novidade

The performance of the SDI service of the Nuclear Information Center (CIN) is presented. The measures used were precision, recall and novelty. The general conclusion is that the system is operating with a high precision (86.1%); but its capability for retrieving relevant documents is low (26.7%). The major source of precision failures was defective search logic and the major source of recall fail ures was lack of specific terms in the entry vocabulary. Concerning the novelty ratio, it was concluded that the overall ratio of the system is 82% and among the documents considered as new by the users, 80% were highy relevant.

Grantor dc:publisher

Universidade Federal do Rio de Janeiro

Year dc:date.issued

1979

Author dc:creator

• Soares, Selma Chi Barreiro

Advisor dc:contributor.advisor

• Lancaster, Frederick Wilfrid

• Energia nuclear
• Disseminação seletiva da informação
• Avaliação de serviços

Statement dc:rights

• Acesso Aberto

Language dc:language

por

Handle dc:identifier.uri

http://hdl.handle.net/11422/8620

OAI identifier oai:identifier

oai:pantheon.ufrj.br:11422/8620