Reinforcement learning maze example. Red rectangle: explorer. Black rectangles: hells [reward = -1]. Yellow bin circle: paradise [reward = +1]. All other states: ground [reward = 0]. This script is the environment part of this example. The RL is in RL_brain.py. View more on my tuto...
简单的一个迷宫例子就是这个走迷宫了~从任意状态开始,走到房间5就算成功了~ python实现Q学习走迷宫: 1#an example for maze using qlearning, two dimension2importnumpy as np34#reward matrix R5R = np.array([[-1, -1, -1, -1, 0, -1], [-1, -1, -1, 0, -1, 100],6[-1, -1, -1...
在这个公式中,\alpha代表学习率(learning rate),\gamma是折扣因子(discount factor),这两个参数的值应当在0到1之间。 r是当前得到的reward,Q_{max} (s_{t+1}, a)指在下一个状态s_{t+1}的所有可能的行动之中,Q-value最高的那个行动所对应的Q-value。 4. 然后重复执行步骤2和3,直到训练完成。 pytho...
我们将要解决「forest fire」的马尔科夫决策问题,这个在python的 MDP 工具箱(http://pymdptoolbox.readthedocs.io/en/latest/api/example.html)中是可以看到的。 森林由两种行动来管理:「等待」和「砍伐」。我们每年做出一个行动,首要目标是为野生动物维护一片古老的森林,次要目标是伐木赚钱。每年都会以 p 的概率...
[Debug Example 3] snake_head_x=80, snake_head_y=80, food_x=200, food_y=200, Ne=40, C=40, gamma=0.7checkpoint3.npyNote that for one part of the autograder, we will run your training process on different settings of parameters andcompare the Q-table generated exactly when snake ...
A simple example for Reinforcement Learning using table lookup Q-learning method. An agent "o" is on the left of a 1 dimensional world, the treasure is on the rightmost location. Run this program and to see how the agent will improve its strategy of finding the treasure. ...
Q-learning是一个经典的强化学习算法,是一种基于价值(Value-based)的算法,通过维护和更新一个价值表格(Q表格)进行学习和预测。 Q-learning是一种off-policy的策略,也就是说,它的行动策略和Q表格的更新策略是不一样的。 行动时,Q-learning会采用epsilon-greedy的方式尝试多种可能动作。
something if you have available training data: for example, you can only learn to classify the sentiment of movie reviews if you have both movie reviews and sentiment annotations available. As such, data availability is usually the limiting factor at this stage (unless you ...
How Does Q-Learning Work? We will learn in detail how Q-learning works by using the example of a frozen lake. In this environment, the agent must cross the frozen lake from the start to the goal, without falling into the holes. The best strategy is to reach goals by taking the shorte...
使用Q-Learning 实现 FlappyBird AI 深度强化学习 ( DQN ) 初探 2. 实现FlappyBird AI 及效果 2.1 状态空间的表示(Q(s, a)) 使用三维数组来表示Q(s, a), double Qmap[H_MAX][V_MAX][ACTION_MAX] V 离下个管道竖直方向的距离 H 离下个管道水平方向的距离...