-ep average best -ep average average (episode -ep average best -ep average average (episode - recall thataccording to the gym frozenlake page"solvingthe game means attaining -episode average of here the agent acheives an average of meaning it was able to solve the game in episodes although this does not solve the game in fewer episodesthis basic least squares method is still able to solve simple game with roughly the same number of training episodes although your neural networks may grow in complexityyou've shown that simple models are sufficient for frozenlake with thatyou have explored three -learning agentsone using qtableanother using neural networkand third using least squares nextyou will build deep reinforcement learning agent for more complex gamespace invaders step -creating deep -learning agent for space invaders say you tuned the previous -learning algorithm' model complexity an sample complexity perfectlyregardless of whether you picked neural network or least squares method as it turns outthis unintelligent -learning agent still performs poorly on more complex gameseven with an especially high number of training episodes this section will cover two techniques that can improve performancethen you will test an agent that was trained using these techniques