Contingency matrix and measures calculated based on it 2x2 contigency table for displaying the outcome of predictions. Based on the table it is possible to calculate row and column wise parameters, PPV and NVP, and sensitivity and specificity, respectively. These parameters are useful, but are not based on all the information in the table. Accuracy is a measure that is calculated based on all the four figures in the table.
Vihinen BMC Genomics 2012 13(Suppl 4):S2 doi:10.1186/1471-2164-13-S4-S2