Error for a given classification relative to a known truth.
Location of errors in a given classification relative to a known truth.
Usage
classError(classification, truth)
Arguments
classification
A numeric or character vector of class labels.
truth
A numeric or character vector of class labels.
Must have the same length as
classification.
Value
A list with the following two components:
misclassified
The indexes of the misclassified data points in a minimum error
mapping between the given classification and the given truth.
errorRate
The errorRate corresponding to a minimum error mapping
mapping between the given classification and the given truth.
Details
If more than one mapping between classification and truth
corresponds to the minimum number of classification errors,
only one possible set of misclassified observations is returned.
References
C. Fraley, A. E. Raftery, T. B. Murphy and L. Scrucca (2012).
mclust Version 4 for R: Normal Mixture Modeling for Model-Based
Clustering, Classification, and Density Estimation.
Technical Report No. 597, Department of Statistics, University of Washington.
# NOT RUN {a <- rep(1:3, 3)
a
b <- rep(c("A", "B", "C"), 3)
b
classError(a, b)
a <- sample(1:3, 9, replace = TRUE)
a
b <- sample(c("A", "B", "C"), 9, replace = TRUE)
b
classError(a, b)
# }