🧠 Reinforcement Learning Practice

🌟 Overview

A comprehensive collection of Reinforcement Learning implementations from the Deep RL Course, featuring 12+ trained agents across diverse environments. This repository demonstrates mastery over various RL algorithms including Deep Q-Networks (DQN) , Proximal Policy Optimization (PPO) , Advantage Actor-Critic (A2C) , REINFORCE, and Q-Learning across platforms like Unity ML-Agents, Gymnasium, Stable-Baselines3, and VizDoom.

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📋 Table of Contents

🎯 Repository Highlights	🏗️ Repository Structure
🔃 Applied RL Projects	🏆 Certification Results
⚙️ Technical Stack	🚀 Getting Started
📊 Performance Metrics	🤝 Contribution

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🎯 Repository Highlights

• ✅ 10/12 Units Passed in Deep RL Course (80%+ completion)
• 🧠 6+ RL Algorithms: PPO, DQN, A2C, REINFORCE, Q-Learning
• 🎮 12+ Environments: Unity ML-Agents, Gymnasium, Atari, VizDoom, PandaGym
• 🏆 Course Certification: Deep RL Course Certificate
• 🎥 Interactive Demos: Video replays embedded in project explanations

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🏗️ Repository Structure

📁 Reinforcement-Learning-Practice/
│
├── 📁 # 1️⃣ HUGGY UNITY ML (Bonus Unit)
├── 1_HuggyUnityML/
│   └── bonus_unit1.ipynb     → Training Huggy the Dog with PPO
│
├── 📁 # 2️⃣ LUNAR LANDER (Unit 1)
├── 2_LunarLanderBaseline3/
│   └── unit1.ipynb           → PPO with Stable-Baselines3
│
├── 📁 # 3️⃣ TABULAR RL (Unit 2)
├── 3_Taxi&FrozenLakeGymnasium/
│   └── unit2.ipynb           → Q-Learning from scratch
│
├── 📁 # 4️⃣ ATARI SPACE INVADERS (Unit 3)
├── 4_AtariSpaceInvadersBaseline3/
│   └── unit3.ipynb           → DQN for Space Invaders
│
├── 📁 # 5️⃣ POLICY GRADIENTS (Unit 4)
├── 5_Cartpole&PixelcopterPytorch/
│   └── unit4.ipynb           → REINFORCE from scratch
│
├── 📁 # 6️⃣ UNITY ADVANCED (Unit 5)
├── 6_Pyramid&SnowballTargetUnityML/
│   └── unit5.ipynb           → Pyramids & Snowball with PPO
│
├── 📁 # 7️⃣ ROBOTICS RL (Unit 6)
├── 7_AdvantageAutoCriticPandaGym/
│   └── unit6.ipynb           → A2C for Panda Robots
│
├── 📁 # 8️⃣ VIZDOOM AGENT (Unit 8 Part II)
├── 8_DoomAgentVizdoom/
│   └──unit8_part2.ipynb     → VizDoom Environment and Agent for Doom Game Agent
│
├── 📁 # 🎥 DEMONSTRATION MEDIA
├── Demo/
│   └── 📁 gif/
│       ├── replay1.gif          → Huggy Unity Training
│       ├── replay2.gif          → Lunar Lander Landing
│       ├── replay3.1.gif        → Taxi-v3 Optimal Path
│       ├── replay3.2.gif        → FrozenLake Navigation
│       ├── replay4.gif          → Space Invaders Gameplay
│       ├── replay5.1.gif        → Cartpole Balance
│       ├── replay5.2.gif        → PixelCopter Flight
│       ├── replay6.1.gif        → Pyramids Completion
│       ├── replay6.2.gif        → Snowball Target Hit
│       ├── replay7.1.gif        → Panda Pick & Place
│       ├── replay7.2.gif        → Panda Reach Dense
│       └── replay8.gif          → VizDoom Doom Agent
│   └── 📁 img/
│       └── display.png          → RL Workflow Display
│
└── README.md                     → You are here!

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🔃 Applied RL Projects

🐶 Huggy Unity ML

Hugging Face Repo: KraTUZen/ppo-Huggy

Training the adorable dog "Huggy" to fetch sticks in Unity ML-Agents environment using PPO. This project introduces Unity ML-Agents toolkit and demonstrates 3D environment training.

🦴 Huggy learning to fetch sticks (Best Score: 3.827)

Algorithm	Framework	Environment	Min Required	Best Result
PPO	Unity ML-Agents	ML-Agents-Huggy	3.0	3.827

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🛰 Lunar Lander

Hugging Face Repo: KraTUZen/ppo-LunarLander-v2

Mastering the Lunar Lander environment using Proximal Policy Optimization (PPO) with Stable-Baselines3. The agent learns to land safely between the flags with precision control.

🌑 lunar landing (Score: 245.02 / 200 required)

Algorithm	Framework	Environment	Min Required	Best Result
PPO	Stable-Baselines3	LunarLander-v2	200	245.02

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🕹 Taxi & FrozenLake

Hugging Face Repos: KraTUZen/q-Taxi-v3, KraTUZen/q-FrozenLake-v1-no-slippery

Classic tabular Q-Learning implementations from scratch. Taxi-v3 involves passenger pickup/dropoff, while FrozenLake demonstrates navigation in grid worlds.

🚕 Taxi-v3 (Score: 4.85)

❄️ FrozenLake (Score: 1.0)

Algorithm	Framework	Environment	Min Required	Best Result
Q-Learning	Gymnasium	Taxi-v3	4.0	4.85
Q-Learning	Gymnasium	FrozenLake-v1	0.5	1.0

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👾 Atari Space Invaders

Hugging Face Repo: KraTUZen/dqn-SpaceInvadersNoFrameskip-v4

Deep Q-Network (DQN) for the classic Atari game Space Invaders. Features CNN-based feature extraction from raw pixels, experience replay, and target networks.

☄ Space Invaders Gameplay (Score: 451.47 / 200 required)

Algorithm	Framework	Environment	Min Required	Best Result
DQN	Stable-Baselines3	SpaceInvadersNoFrameskip-v4	200	451.47

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🔀 CartPole & PixelCopter

Hugging Face Repos: KraTUZen/Reinforce-CartPole-v1, KraTUZen/Reinforce-PixelCopter

REINFORCE algorithm implementations from scratch using PyTorch. CartPole demonstrates policy gradients simply, while PixelCopter handles vision-based continuous control.

⚖️ CartPole (Score: 500)

🚁 PixelCopter (Score: 12.03)

Algorithm	Framework	Environment	Min Required	Best Result
REINFORCE	PyTorch	CartPole-v1	350	500
REINFORCE	PyTorch	PixelCopter-PLE-v0	5	12.03

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🍀 Pyramids & Snowball Target

Hugging Face Repos: KraTUZen/ppo-PyramidsTraining, KraTUZen/ppo-SnowballTarget

Advanced Unity ML-Agents environments solved with PPO. Pyramids requires building structures, while Snowball Target involves hitting moving targets.

🔺 Pyramids (Score: 1.38)

🎯 Snowball Target (Score: 3.27)

Algorithm	Framework	Environment	Min Required	Best Result
PPO	Unity ML-Agents	Pyramids	-100	1.38
PPO	Unity ML-Agents	SnowballTarget	-100	3.27

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🐼 Panda Robotics

Hugging Face Repos: KraTUZen/a2c-PandaReachDense-v3, KraTUZen/a2c-PandaPickAndPlace-v3

Robotics manipulation with Franka Emika Panda robot arm using A2C. Tasks include reaching targets and pick-and-place operations.

🎍 Panda Pick & Place (Score: 2.5)

🦾 Panda Reach Dense (Score: 2.5)

Algorithm	Framework	Environment	Min Required	Best Result
A2C	PandaGym	PandaPickAndPlace-v3	-3.5	2.5
A2C	PandaGym	PandaReachDense-v3	-3.5	2.5

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👨‍🚀 Doom Agent Vizdoom

Hugging Face Repo: KraTUZen/Vizdoom-Doom-Agent

First-person shooter agent trained in VizDoom to gather health packs and defeating enemies if encountered. Demonstrates RL in partially observable 3D environments.

🔫 VizDoom Doom Agent (Score: 5.34 / 5 required)

Algorithm	Framework	Environment	Min Required	Best Result
PPO	VizDoom	Vizdoom-Doom-Agent	5	5.34

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🏆 Certification Results

Deep RL Course Progress (80%+ Completion)

Status	Unit	Environment	Min Required	Best Result	Best Model ID
✅	Bonus Unit 1	ML-Agents-Huggy	3.0	3.827	ppo-Huggy
✅	Unit 1	LunarLander-v2	200	245.02	ppo-LunarLander-v2
✅	Unit 2	Taxi-v3	4.0	4.85	q-Taxi-v3
✅	Unit 2	FrozenLake-v1	0.5	1.0	q-FrozenLake-v1-no-slippery
✅	Unit 3	SpaceInvadersNoFrameskip-v4	200	451.47	dqn-SpaceInvadersNoFrameskip-v4
✅	Unit 4	CartPole-v1	350	500	Reinforce-CartPole-v1
✅	Unit 4	PixelCopter-PLE-v0	5	12.03	Reinforce-PixelCopter
✅	Unit 5	ML-Agents-SnowballTarget	-100	3.27	ppo-SnowballTarget
✅	Unit 5	ML-Agents-Pyramids	-100	1.38	ppo-PyramidsTraining
✅	Unit 6	PandaReachDense-v3	-3.5	2.5	a2c-PandaReachDense-v3
✅	Unit 6	PandaPickAndPlace-v3	-3.5	2.5	a2c-PandaPickAndPlace-v3
❌	Unit 7	ML-Agents-SoccerTwos	-100	-1000	Skipped (Corrupted)
❌	Unit 8 PI	LunarLander-v2	-500	-1000	Skipped (Similar to Unit 1)
✅	Unit 8 PII	Doom-Health-Gathering-Supreme	5	5.34	Vizdoom-Doom-Agent

_{✅ Achieved 80%+ completion requirement (10/12 units passed)}

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⚙️ Technical Stack

Category	Technologies
RL Libraries	Stable-Baselines3, HuggingFace Hub 🤗
Deep Learning	PyTorch, TensorBoard
Environments	Gymnasium, Unity ML-Agents, VizDoom, PandaGym, PyBullet, Atari-Py
Algorithms	PPO, DQN, A2C, REINFORCE, Q-Learning

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🚀 Getting Started

Option 1: Conda (Recommended)

# Create environment
conda env create -f environment.yml

# Activate
conda activate rl-practice

# Verify installation
python -c "import gymnasium; print('✅ Gymnasium OK')"

Option 2: Pip

# Create virtual environment
python -m venv venv

# Activate (Windows)
venv\Scripts\activate
# Activate (Linux/Mac)
source venv/bin/activate

# Install dependencies
pip install -r requirements.txt

Running Notebooks

# Navigate to project folder
cd "1_HuggyUnityML"

# Launch Jupyter
jupyter notebook bonus_unit1.ipynb

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📊 Performance Metrics

Environment	Algorithm	Min Required	Best Score	Improvement
Huggy	PPO	3.0	3.827	+27.6%
LunarLander-v2	PPO	200	245.02	+22.5%
Taxi-v3	Q-Learning	4.0	4.85	+21.3%
FrozenLake-v1	Q-Learning	0.5	1.0	+100%
SpaceInvaders	DQN	200	451.47	+125.7%
CartPole-v1	REINFORCE	350	500	+42.9%
PixelCopter	REINFORCE	5	12.03	+140.6%
SnowballTarget	PPO	-100	3.27	+103.3%*
Pyramids	PPO	-100	1.38	+101.4%*
PandaReach	A2C	-3.5	2.5	+171.43%*
PandaPickAndPlace	A2C	-3.5	2.5	+171.43%*
VizDoomAgent	PPO	5	5.34	+6.8%

*Relative improvement from negative baseline

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🤝 Contribution

Contributions are welcome! Whether it's new algorithms, environments, or improvements:

1. 🍴 Fork the repository
2. 🌿 Create a feature branch (git checkout -b feature/NewAlgorithm)
3. 💾 Commit changes (git commit -m 'Add NewAlgorithm')
4. 📤 Push to branch (git push origin feature/NewAlgorithm)
5. 🔃 Open a Pull Request

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⭐ Star this repo if you find it helpful!

"The future of AI lies in agents that learn from interaction."