add compute_auc

tools/compute_auc.py

@@ -0,0 +1,11 @@
+import numpy as np
+from sklearn import metrics
+
+# K (number of shots)
+x = np.array([1., 10., 30., 50., 100., 300., 500., 1000.])
+x_log = np.log(x) / np.log(1000)
+# Average Recall scores
+y = np.array([0.0, 18.0, 26.5, 29.6, 33.4, 39.0, 41.5, 45.0])
+y *= 0.01
+auc = metrics.auc(x_log, y)
+print('AUC score:', auc)