Avaliação do serviço de disseminação seletiva de informações do Centro de Informações Nucleares em relação á precisão, recuperação e novidade
type: CreativeWork
description: 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.
abstract: 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.
author: Soares, Selma Chi Barreiro
language: por
keywords: Energia nuclear, Disseminação seletiva da informação, Avaliação de serviços
date published: 1979
date modified: 2026-07-24T01:16:29Z
provider: Brazil UERJ
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Universidade Federal do Rio de Janeiro

PropertyValue
property ID: Handle
value: http://hdl.handle.net/11422/8620