Berinteraksi dengan environment Frozen Lake

Sekarang Anda akan menavigasi environment Frozen Lake, sebuah dunia berbentuk kisi (grid) di mana aksi menggerakkan agen ke arah tertentu. Tugas Anda adalah mengamati environment dengan saksama, lalu mendefinisikan secara manual daftar actions yang akan menavigasikan agen dari titik awal (kiri atas) ke tujuan (kanan bawah) tanpa terperosok ke lubang mana pun. Dalam environment Frozen Lake, aksi umumnya direpresentasikan sebagai:

0: kiri
1: bawah
2: kanan
3: atas

Setelah menjalankan kode Anda, pastikan untuk menelusuri plot Anda guna melihat jalur yang diambil dengan menggunakan tombol 'Previous Plot' dan 'Next Plot'. Ini akan membantu Anda memahami urutan aksi dan hasilnya.

gym dan plt telah diimpor bersama dengan fungsi render() dan variabel env.

Latihan ini adalah bagian dari kursus

Reinforcement Learning dengan Gymnasium di Python

Petunjuk latihan

Amati posisi agen di sisi kanan dan definisikan daftar actions untuk menavigasikan agen melintasi danau hingga mencapai tujuan.
Eksekusikan setiap aksi dalam daftar melalui perulangan for.
Render environment setelah setiap aksi untuk mengamati jalur agen.

Latihan interaktif praktis

Cobalah latihan ini dengan menyelesaikan kode contoh berikut.

# Define the sequence of actions
actions = [____]

for action in actions:
  # Execute each action
  state, reward, terminated, _, _ = ____
  # Render the environment
  ____
  if terminated:
  	print("You reached the goal!")

Edit dan Jalankan Kode

Latihan ini adalah bagian dari kursus

Reinforcement Learning dengan Gymnasium di Python

SkillTag.level.advancedSkillTag.label

4.8+

Mulai Kursus Gratis

Dive into the exciting world of Reinforcement Learning (RL) by exploring its foundational concepts, roles, and applications. Navigate through the RL framework, uncovering the agent-environment interaction. You'll also learn how to use the Gymnasium library to create environments, visualize states, and perform actions, thus gaining a practical foundation in RL concepts and applications.

Exercise 1: Dasar-dasar reinforcement learning Exercise 2: Apa itu Reinforcement Learning?Exercise 3: RL vs. sub-domain ML lainnya Exercise 4: Skenario penerapan RL Exercise 5: Menavigasi kerangka kerja RL Exercise 6: Loop interaksi RL Exercise 7: Tugas RL episodik dan kontinu Exercise 8: Menghitung discounted returns untuk strategi agen Exercise 9: Berinteraksi dengan lingkungan Gymnasium Exercise 10: Menyiapkan lingkungan Mountain Car Exercise 11: Memvisualisasikan Lingkungan Mountain Car Exercise 12: Berinteraksi dengan environment Frozen Lake

Latihan Saat Ini

Delve deeper into the world of RL focusing on model-based learning. Unravel the complexities of Markov Decision Processes (MDPs), understanding their essential components. Enhance your skill set by learning about policies and value functions. Gain expertise in policy optimization with policy iteration and value Iteration techniques.

Exercise 1: Markov Decision Processes Exercise 2: Custom Frozen Lake MDP components Exercise 3: Exploring state and action spaces Exercise 4: Transition probabilities and rewards Exercise 5: Policies and state-value functions Exercise 6: Defining a deterministic policy Exercise 7: Computing state-values for a policy Exercise 8: Comparing policies Exercise 9: Action-value functions Exercise 10: Computing Q-values Exercise 11: Improving a policy Exercise 12: Policy iteration and value iteration Exercise 13: Applying policy iteration for optimal policy Exercise 14: Implementing value iteration

Embark on a journey through the dynamic realm of Model-Free Learning in RL. Get introduced to to the foundational Monte Carlo methods, and apply first-visit and every-visit Monte Carlo prediction algorithms. Transition into the world of Temporal Difference Learning, exploring the SARSA algorithm. Finally, dive into the depths of Q-Learning, and analyze its convergence in challenging environments.

Exercise 1: Monte Carlo methods Exercise 2: Episode generation for Monte Carlo methods Exercise 3: Implementing first-visit Monte Carlo Exercise 4: Implementing every-visit Monte Carlo Exercise 5: Temporal difference learning Exercise 6: Implementing the SARSA update rule Exercise 7: Solving 8x8 Frozen Lake with SARSA Exercise 8: Q-learning Exercise 9: Implementing Q-learning update rule Exercise 10: Solving 8x8 Frozen Lake with Q-learning Exercise 11: Evaluating policy on a slippery Frozen Lake

Dive into advanced strategies in Model-Free RL, focusing on enhancing decision-making algorithms. Learn about Expected SARSA for more accurate policy updates and Double Q-learning to mitigate overestimation bias. Explore the Exploration-Exploitation Tradeoff, mastering epsilon-greedy and epsilon-decay strategies for optimal action selection. Tackle the Multi-Armed Bandit Problem, applying strategies to solve decision-making challenges under uncertainty.

Exercise 1: Expected SARSA Exercise 2: Expected SARSA update rule Exercise 3: Applying Expected SARSA Exercise 4: Double Q-learning Exercise 5: Implementing double Q-learning update rule Exercise 6: Applying double Q-learning Exercise 7: Balancing exploration and exploitation Exercise 8: Defining epsilon-greedy function Exercise 9: Solving CliffWalking with epsilon greedy strategy Exercise 10: Solving CliffWalking with decayed epsilon-greedy strategy Exercise 11: Multi-armed bandits Exercise 12: Creating a multi-armed bandit Exercise 13: Solving a multi-armed bandit Exercise 14: Assessing convergence in a multi-armed bandit Exercise 15: Congratulations!