add option to pass in absolute tolerance

modules/deeplearning/quantile_regression.py

@@ -22,7 +22,7 @@ def true_func(x):
     # Y = 2 + 1.5 * X + epsilon  # Linear relationship with variance increasing
     # Y = 1 + np.exp(X / 4) + epsilon
     # Y = 1 + np.exp(X / 4) + np.sin((2*np.pi/5)*X)
-    return 1 + np.exp(x / 4) + np.sin((2*np.pi/5)*x)
+    return 1 + np.exp(x / 4) + 0.5*np.sin((2*np.pi/5)*x)
 
 # Generate synthetic dataset
 def make_data(num_points=1000):