Fix cv issue

tests/test_cv_full.py

@@ -42,7 +42,7 @@ for filename in filenames:
     train_feats=extractor.gen_feats(eset)
     clf=GradientBoostingClassifier(n_estimators=100, learn_rate=.05,max_depth=4, random_state=1,min_samples_leaf=3)
     cv_preds=util_functions.gen_cv_preds(clf,train_feats,scores, num_chunks = int(math.floor(len(texts)/2)))
-    err=numpy.mean(numpy.abs(cv_preds-scores))
+    err=numpy.mean(numpy.abs(numpy.array(cv_preds)-scores))
     print err
     kappa=util_functions.quadratic_weighted_kappa(list(cv_preds),scores)
     print kappa