How does the is_slippery parameter affect the reward in Frozenlake Environment?

Question

How does the is_slippery parameter affect the reward in Frozenlake Environment?

Frozenlake environment has a parameter named is_slippery, which if set to True will move in intended direction with probability of 1/3 else will move in either perpendicular direction with equal probability of 1/3 in both directions. How does this is_slippery parameter affect the reward generated from the environment? Or does it merely do the job of deflecting the agent from it intended path?

Answer 1

The "is_slippery" parameter determines if you are using the Frozenlake environment as stochastic (True) or deterministic (False).

However, the Frozen Lake environment can also be used in deterministic mode. By setting the property is_slippery=False when creating the environment, the slippery surface is turned off and then the environment always executes the action chosen by the agent.

https://zoo.cs.yale.edu/classes/cs470/materials/hws/hw7/FrozenLake.html