Stochastic Interpretation of 2×2 Classification Tables
作者:
NeilE. Beckwith,
DonaldG. Morrison,
期刊:
Journal of the American Statistical Association
(Taylor Available online 1977)
卷期:
Volume 72,
issue 358
页码: 303-308
ISSN:0162-1459
年代: 1977
DOI:10.1080/01621459.1977.10480994
出版商: Taylor & Francis Group
关键词: Classification table interpretation;Stochastic interpretation of classification tables;Confusion matrix interpretation;Two-group classification interpretation
数据来源: Taylor
摘要:
Procedures which classify individuals into discrete categories are often evaluated by the fraction of individuals correctly classified. If the individual behavior is truly stochastic rather than deterministic, the expected fraction of correct classifications would be less than one, even when the procedure is based upon perfect estimates of every individual's probability of belonging to a category. For the binary case of two categories, the expected fraction which is correctly classified is between 50 and 100 percent. The exact value depends upon the mixing distribution of probabilities in the population.
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