Understanding a part of JRip rule-based classifier output

Question

I've run JRip and i got a set of rules in this form:

                                                                      |
                                                                      V
(something >= 0.076) and (someotherthing >= 0.013) => class=1 (944.0/42.0)

I'm tring to understand what the numbers 944.0 and 42.0 mean. Almost sure 944.0 is the number of instances covered by the rule, but I can't really undestand the second one.

Answer 1

the 2nd number is number of instances misclassified by rule