+
+ //calc signif - zA - http://en.wikipedia.org/wiki/Kendall_tau_rank_correlation_coefficient#Significance_tests
+ double numer = 3.0 * (numCoor - numDisCoor);
+ int n = scores[j].size();
+ double denom = n * (n-1) * (2*n + 5) / (double) 2.0;
+ denom = sqrt(denom);
+ double sig = numer / denom;
+
+ if (isnan(sig) || isinf(sig)) { sig = 0.0; }
+
+ out << '\t' << sig;