/*
* for both
*/
public static double calc_info_attr(CondClassDistribution instances_by_attr) {
// Collection<Object> attributeValues = instances_by_attr.getAttributes();
double data_size = instances_by_attr.getTotal();
double sum = 0.0;
if (data_size > 0)
for (int attr_idx = 0; attr_idx < instances_by_attr.getNumCondClasses(); attr_idx++) {
Object attr_category = instances_by_attr.getCondClass(attr_idx);
double total_num_attr = instances_by_attr.getTotal_AttrCategory(attr_category);
if (total_num_attr > 0) {
double prob = total_num_attr / data_size;
// flog.debug("{("+total_num_attr +"/"+data_size +":"+prob +")* [");
double info = calc_info(instances_by_attr.getDistributionOf(attr_category));
sum += prob * info;
// flog.debug("]} ");
}
}
// flog.debug("\n == "+sum);
return sum;
}
