Kappa
Kappa calculates Kappa and (optionally) the associated standard deviation from a confusion matrix.
Kappa(CMX, st.dev = TRUE)
CMX |
a confusion matrix - output from |
st.dev |
a logical indicating whether the associated standard deviation should be calculated |
The Kappa statistic summarizes all the available information in the confusion matrix. Kappa measures the proportion of correctly classified units after accounting for the probability of chance agreement.
if st.dev = FALSE, returns: Kappa.
if st.dev = TRUE, returns a dataframe where:
| [1,1] | Kappa |
|
| [1,2] | Kappa.sd |
standard deviation of Kappa |
Elizabeth Freeman eafreeman@fs.fed.us
cmx, pcc, sensitivity, specificity, auc
data(SIM3DATA) Kappa(cmx(SIM3DATA)) Kappa(cmx(SIM3DATA),st.dev=FALSE)
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