Update app.py

app.py

@@ -262,7 +262,7 @@ def visualize_ROC(set_threshold,set_input):
   ax.spines['right'].set_color('black')
   plt.xlabel('Threshold cut-off')
   plt.ylabel('F1-score & G-mean')
-  plt.legend()
+  plt.legend(loc='upper left')
   plt.text(set_threshold, f1_score_cur, 'F1-score:%s' % (round(f1_score_cur,2)))
   plt.text(set_threshold, g_mean_cur, 'G-mean:%s' % (round(g_mean_cur,2)))
   plt.title("Threshold tuning curves (F1-score & G-mean)", fontsize=20)