Create epsilon.py

Author: Owen-CH-Leung

utils/epsilon.py

@@ -0,0 +1,9 @@
+def standard_epsilon(min_epsilon):
+    return min_epsilon
+
+def decaying_epsilon(min_epsilon, t):
+    return min(1 / t, min_epsilon)
+
+def exponential_decay_epsilon(min_epsilon, init_epsilon, alpha, t):
+    return min(init_epsilon * (alpha**t), min_epsilon)
+