Measure of Agreement Between Two Raters
Measure of agreement delta was originally by Martín & Femia (2004) <10.1348>.
Since then has been considered as agreement measure for different
fields, since their behavior is usually better than the usual kappa index
by Cohen (1960) <10.1177>. The main issue with delta
is that can not be computed by hand contrary to kappa. The current algorithm
is based on the Version 5 of the delta windows program that can be found on