Rajarshi1001 / CS780

Repository contains codes for the course CS780: Deep Reinforcement Learning

CS780 Assignments

Assignment 1

• Implementation of Bernoulli and Gaussian Bandit environment using Gymnasium library and simulating them for different combinations of hyper parameters
• Implementation of different learning strategies like pureExploitation, pureExploration, epsilonGreedyExploration, decayingEpsilonGreedyExploration, softmaxExploration and UCBExploration methods and their corresponding simulations on both environments along with tuning hyper parameters for different environments.
• Implementation of Random Walk Environment, creation of trajectory using generateTrajectory function for simulation
• Implementation of MonteCarloPrediction (both FVMC and EVMC) and TemporalDifferencePrediction for calculation of state values in the environment
• Plotting the evolution of state values over episodes, log scale episodes, seed averaged plots for effective noise removal
• Analysing the variation of target values for a particular state for the case of both environments

Assignment 2

• Implementation of control algorithms like MonteCarloControl, SARSAControl, Q learning, double Q learning, SARSA($\lambda$) with eligibility traces, Q($\lambda$) with traces
• Implementation of model based algorithms like Dyna-Q and Trajectory Sampling for optimal policy calculation and values for each of the states in Random Maze Environment
• Comparison between different off-policy and on-policy control algorithms for this environment

Assignment 3

This assignment primarily includes the implementation of 5 Value Based Deep RL models namely:

• Neural Fitted Q Iteration (NFQ)
• Deep Q Network (DQN)
• Double Deep Q Network (DDQN)
• Dueling Double Deep Q Network (D3QN)
• Dueling Double Deep Q Network with Prioritized Experience Replay (D3QN-PER)

and 2 Policy Based Deep RL models namely:

• REINFORCE
• Vanilla Policy Gradient (VPG)

on two different OpenAI gym environments like Cartpole-v0 and MountainCar-v1 respectively.

Assignment 4

This assignment primiarily includes implementation of 3 Deep RL models for continuous action spaces namely:

• Deep Deterministic Policy Gradient (DDPG)
• Twin Delayed Deep Deterministic Policy Gradient (TD3)
• Proximal Policy Optimization (PPO)

on three different OpenAI gym environments like Pendulum-v1, Hopper-v4 and HalfCheetah-v1 respectively.

Midsem

• Implementation of Random Maze Environment and its simulations
• Implementation of Policy Iteration and Value Iteration for optimal policy calculation and values for each of the states in the environment and its comparative analyses.
• Implementation of Monte Carlo, Temporal Difference-n step, TD($\lambda$) algorithm for calculation of values for each states using optimal policies and its comparative analyses.