{"id":975219,"date":"2024-12-27T06:11:29","date_gmt":"2024-12-26T22:11:29","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/975219.html"},"modified":"2024-12-27T06:11:30","modified_gmt":"2024-12-26T22:11:30","slug":"python-%e5%a6%82%e4%bd%95%e9%87%8d%e7%bd%aeq%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/975219.html","title":{"rendered":"python \u5982\u4f55\u91cd\u7f6eq\u8868"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24200554\/228b8801-12f6-45d3-a2a6-03b0b11faf6b.webp\" alt=\"python \u5982\u4f55\u91cd\u7f6eq\u8868\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\u91cd\u7f6eQ\u8868\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u91cd\u65b0\u521d\u59cb\u5316Q\u8868\u3001\u4f7f\u7528\u9ed8\u8ba4\u503c\u8986\u76d6Q\u8868\u7684\u5185\u5bb9\u3001\u5229\u7528numpy\u6216pandas\u5e93\u8fdb\u884c\u9ad8\u6548\u64cd\u4f5c\u3002\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0c\u91cd\u65b0\u521d\u59cb\u5316Q\u8868\u6700\u4e3a\u7b80\u5355\u6709\u6548\u3002<\/strong><\/p>\n<\/p>\n<p><p>\u91cd\u7f6eQ\u8868\u901a\u5e38\u662f\u5728\u5f3a\u5316\u5b66\u4e60\u8fc7\u7a0b\u4e2d\uff0c\u5f53\u6211\u4eec\u5e0c\u671b\u91cd\u65b0\u5f00\u59cb\u8bad\u7ec3\u6216\u8005\u8fdb\u884c\u4e0d\u540c\u5b9e\u9a8c\u65f6\u9700\u8981\u8fdb\u884c\u7684\u64cd\u4f5c\u3002Q\u8868\u662fQ-learning\u7b97\u6cd5\u4e2d\u7528\u4e8e\u5b58\u50a8\u72b6\u6001-\u52a8\u4f5c\u5bf9\u7684\u503c\u7684\u8868\u3002\u4ee5\u4e0b\u662f\u5173\u4e8e\u5982\u4f55\u5728Python\u4e2d\u91cd\u7f6eQ\u8868\u7684\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u91cd\u65b0\u521d\u59cb\u5316Q\u8868<\/p>\n<\/p>\n<p><p>\u5728\u5f3a\u5316\u5b66\u4e60\u4e2d\uff0cQ\u8868\u901a\u5e38\u662f\u4ee5\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u6216\u5b57\u5178\u7684\u5f62\u5f0f\u5b58\u5728\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u5bf9\u5e94\u4e00\u4e2a\u72b6\u6001-\u52a8\u4f5c\u5bf9\u7684Q\u503c\u3002\u8981\u91cd\u7f6eQ\u8868\uff0c\u53ef\u4ee5\u7b80\u5355\u5730\u5c06\u5176\u91cd\u65b0\u521d\u59cb\u5316\u3002\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u63a5\uff0c\u9002\u5408\u5728\u7b97\u6cd5\u8bbe\u8ba1\u521d\u671f\u6216\u5b9e\u9a8c\u9636\u6bb5\u4f7f\u7528\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528\u4e8c\u7ef4\u6570\u7ec4\u91cd\u7f6eQ\u8868<\/li>\n<\/ol>\n<p><p>\u4e8c\u7ef4\u6570\u7ec4\u662f\u5b58\u50a8Q\u8868\u7684\u4e00\u79cd\u5e38\u89c1\u65b9\u5f0f\u3002\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u6216numpy\u6570\u7ec4\u6765\u5b9e\u73b0\u3002\u5f53\u9700\u8981\u91cd\u7f6eQ\u8868\u65f6\uff0c\u53ef\u4ee5\u91cd\u65b0\u521b\u5efa\u4e00\u4e2a\u76f8\u540c\u5927\u5c0f\u4f46\u6240\u6709\u5143\u7d20\u5747\u4e3a\u521d\u59cb\u503c\u7684\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u5047\u8bbeQ\u8868\u7684\u5927\u5c0f\u4e3a (num_states, num_actions)<\/strong><\/h2>\n<p>num_states = 10<\/p>\n<p>num_actions = 4<\/p>\n<h2><strong>\u521d\u59cb\u5316Q\u8868<\/strong><\/h2>\n<p>Q_table = np.zeros((num_states, num_actions))<\/p>\n<h2><strong>\u91cd\u7f6eQ\u8868<\/strong><\/h2>\n<p>def reset_q_table():<\/p>\n<p>    global Q_table<\/p>\n<p>    Q_table = np.zeros((num_states, num_actions))<\/p>\n<p>reset_q_table()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li>\u4f7f\u7528\u5b57\u5178\u91cd\u7f6eQ\u8868<\/li>\n<\/ol>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528\u5b57\u5178\u5b58\u50a8Q\u8868\u662f\u66f4\u4e3a\u7075\u6d3b\u7684\u9009\u62e9\uff0c\u5c24\u5176\u662f\u5728\u72b6\u6001\u7a7a\u95f4\u8f83\u5927\u4e14\u7a00\u758f\u7684\u60c5\u51b5\u4e0b\u3002\u91cd\u7f6e\u5b57\u5178\u5f62\u5f0f\u7684Q\u8868\u540c\u6837\u53ef\u4ee5\u901a\u8fc7\u91cd\u65b0\u521d\u59cb\u5316\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5047\u8bbeQ\u8868\u662f\u4e00\u4e2a\u5b57\u5178\uff0c\u952e\u4e3a\u72b6\u6001\uff0c\u503c\u4e3a\u52a8\u4f5c-\u503c\u5bf9<\/p>\n<p>Q_table_dict = {state: {action: 0 for action in range(num_actions)} for state in range(num_states)}<\/p>\n<h2><strong>\u91cd\u7f6eQ\u8868<\/strong><\/h2>\n<p>def reset_q_table_dict():<\/p>\n<p>    global Q_table_dict<\/p>\n<p>    Q_table_dict = {state: {action: 0 for action in range(num_actions)} for state in range(num_states)}<\/p>\n<p>reset_q_table_dict()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528\u9ed8\u8ba4\u503c\u8986\u76d6Q\u8868\u5185\u5bb9<\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u91cd\u65b0\u521d\u59cb\u5316\u6574\u4e2aQ\u8868\u53ef\u80fd\u4e0d\u662f\u6700\u4f73\u9009\u62e9\uff0c\u4f8b\u5982\u5f53Q\u8868\u975e\u5e38\u5927\u65f6\u3002\u6b64\u65f6\uff0c\u53ef\u4ee5\u8003\u8651\u4ec5\u7528\u9ed8\u8ba4\u503c\u8986\u76d6Q\u8868\u4e2d\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528numpy\u5bf9\u6570\u7ec4\u8fdb\u884c\u8d4b\u503c<\/li>\n<\/ol>\n<p><p>\u5229\u7528numpy\u7684\u8d4b\u503c\u529f\u80fd\u53ef\u4ee5\u5feb\u901f\u5bf9\u6574\u4e2a\u6570\u7ec4\u8fdb\u884c\u4fee\u6539\u3002\u8fd9\u79cd\u65b9\u6cd5\u80fd\u591f\u9ad8\u6548\u5730\u91cd\u7f6e\u5927\u89c4\u6a21\u7684Q\u8868\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5c06Q\u8868\u7684\u503c\u5168\u90e8\u91cd\u7f6e\u4e3a\u9ed8\u8ba4\u503c<\/p>\n<p>default_value = 0<\/p>\n<p>Q_table.fill(default_value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li>\u4f7f\u7528\u5faa\u73af\u5bf9\u5b57\u5178\u8fdb\u884c\u8d4b\u503c<\/li>\n<\/ol>\n<p><p>\u5bf9\u4e8e\u5b57\u5178\u5f62\u5f0f\u7684Q\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u5bf9\u6bcf\u4e2a\u72b6\u6001-\u52a8\u4f5c\u5bf9\u8fdb\u884c\u91cd\u7f6e\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u91cd\u7f6eQ\u8868\u5b57\u5178\u4e2d\u7684\u503c<\/p>\n<p>def reset_q_table_dict_with_default_value(default_value=0):<\/p>\n<p>    for state in Q_table_dict:<\/p>\n<p>        for action in Q_table_dict[state]:<\/p>\n<p>            Q_table_dict[state][action] = default_value<\/p>\n<p>reset_q_table_dict_with_default_value()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e09\u3001\u5229\u7528pandas\u5e93\u8fdb\u884c\u9ad8\u6548\u64cd\u4f5c<\/p>\n<\/p>\n<p><p>\u5bf9\u4e8e\u5927\u89c4\u6a21\u7684\u6570\u636e\u5904\u7406\uff0cpandas\u5e93\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5bf9Q\u8868\u8fdb\u884c\u91cd\u7f6e\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528pandas DataFrame\u91cd\u7f6eQ\u8868<\/li>\n<\/ol>\n<p><p>\u5728\u67d0\u4e9b\u5e94\u7528\u4e2d\uff0c\u4f7f\u7528pandas\u7684DataFrame\u6765\u5b58\u50a8Q\u8868\u53ef\u4ee5\u5e26\u6765\u66f4\u597d\u7684\u6570\u636e\u7ba1\u7406\u548c\u5206\u6790\u80fd\u529b\u3002\u91cd\u7f6eDataFrame\u5f62\u5f0f\u7684Q\u8868\u53ef\u4ee5\u901a\u8fc7\u76f4\u63a5\u8d4b\u503c\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2aDataFrame\u5f62\u5f0f\u7684Q\u8868<\/strong><\/h2>\n<p>Q_table_df = pd.DataFrame(np.zeros((num_states, num_actions)), columns=[f&quot;action_{i}&quot; for i in range(num_actions)])<\/p>\n<h2><strong>\u91cd\u7f6eQ\u8868<\/strong><\/h2>\n<p>def reset_q_table_df():<\/p>\n<p>    global Q_table_df<\/p>\n<p>    Q_table_df.loc[:, :] = 0<\/p>\n<p>reset_q_table_df()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u56db\u3001\u5728\u4e0d\u540c\u573a\u666f\u4e0b\u7684\u91cd\u7f6e\u7b56\u7565<\/p>\n<\/p>\n<p><p>\u6839\u636e\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\u548c\u9700\u6c42\uff0c\u9009\u62e9\u5408\u9002\u7684Q\u8868\u91cd\u7f6e\u7b56\u7565\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<\/p>\n<ol>\n<li>\u5b9e\u9a8c\u9636\u6bb5<\/li>\n<\/ol>\n<p><p>\u5728\u5b9e\u9a8c\u9636\u6bb5\uff0c\u5feb\u901f\u548c\u9891\u7e41\u5730\u91cd\u7f6eQ\u8868\u662f\u5e38\u89c1\u7684\u9700\u6c42\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7b80\u5355\u7684\u91cd\u65b0\u521d\u59cb\u5316\u65b9\u6cd5\u901a\u5e38\u662f\u6700\u4f73\u9009\u62e9\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li>\u5927\u89c4\u6a21\u5e94\u7528<\/li>\n<\/ol>\n<p><p>\u5728\u5927\u89c4\u6a21\u5e94\u7528\u4e2d\uff0cQ\u8868\u53ef\u80fd\u975e\u5e38\u5927\uff0c\u91cd\u65b0\u521d\u59cb\u5316\u53ef\u80fd\u4f1a\u6d88\u8017\u5927\u91cf\u8d44\u6e90\u3002\u6b64\u65f6\uff0c\u4f7f\u7528\u9ed8\u8ba4\u503c\u8986\u76d6Q\u8868\u5185\u5bb9\u6216\u5229\u7528pandas\u5e93\u8fdb\u884c\u9ad8\u6548\u64cd\u4f5c\u53ef\u80fd\u66f4\u4e3a\u5408\u9002\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li>\u5728\u7ebf\u5b66\u4e60<\/li>\n<\/ol>\n<p><p>\u5728\u5728\u7ebf\u5b66\u4e60\u73af\u5883\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u5728\u4e0d\u4e2d\u65ad\u8bad\u7ec3\u7684\u60c5\u51b5\u4e0b\u8fdb\u884cQ\u8868\u7684\u91cd\u7f6e\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u8003\u8651\u9010\u6b65\u8c03\u6574Q\u503c\u800c\u4e0d\u662f\u5b8c\u5168\u91cd\u7f6e\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u91cd\u7f6eQ\u8868\u5728\u5f3a\u5316\u5b66\u4e60\u7b97\u6cd5\u7684\u5b9e\u73b0\u548c\u5b9e\u9a8c\u4e2d\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\u3002\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u64cd\u4f5c\uff0c\u5305\u62ec\u91cd\u65b0\u521d\u59cb\u5316Q\u8868\u3001\u4f7f\u7528\u9ed8\u8ba4\u503c\u8986\u76d6\u3001\u4ee5\u53ca\u5229\u7528numpy\u548cpandas\u5e93\u8fdb\u884c\u9ad8\u6548\u64cd\u4f5c\u3002\u9009\u62e9\u5408\u9002\u7684\u91cd\u7f6e\u7b56\u7565\u53ef\u4ee5\u63d0\u9ad8\u7b97\u6cd5\u7684\u6548\u7387\u548c\u6548\u679c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5e94\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u73af\u5883\u7279\u70b9\uff0c\u7075\u6d3b\u9009\u62e9\u548c\u7ec4\u5408\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u6709\u6548\u5730\u91cd\u7f6eQ\u8868\uff1f<\/strong><br \/>\u91cd\u7f6eQ\u8868\u901a\u5e38\u610f\u5473\u7740\u5c06Q\u8868\u4e2d\u7684\u6240\u6709\u503c\u8bbe\u7f6e\u4e3a\u521d\u59cb\u72b6\u6001\uff0c\u4ee5\u4fbf\u5728\u65b0\u7684\u5b66\u4e60\u8fc7\u7a0b\u4e2d\u91cd\u65b0\u5f00\u59cb\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06Q\u8868\u7684\u6240\u6709\u5143\u7d20\u521d\u59cb\u5316\u4e3a\u96f6\u6216\u5176\u4ed6\u503c\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528NumPy\u5e93\u6765\u521b\u5efa\u548c\u91cd\u7f6eQ\u8868\u3002\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-python\">import numpy as np\n\n# \u5047\u8bbeQ\u8868\u7684\u7ef4\u5ea6\u4e3a\u72b6\u6001\u6570\u548c\u52a8\u4f5c\u6570\nstate_size = 10\naction_size = 4\nQ_table = np.zeros((state_size, action_size))\n\n# \u91cd\u7f6eQ\u8868\nQ_table = np.zeros((state_size, action_size))\n<\/code><\/pre>\n<p><strong>\u91cd\u7f6eQ\u8868\u4f1a\u5f71\u54cd\u6a21\u578b\u5b66\u4e60\u7684\u54ea\u4e9b\u65b9\u9762\uff1f<\/strong><br \/>\u91cd\u7f6eQ\u8868\u4f1a\u4f7f\u6a21\u578b\u5931\u53bb\u4e4b\u524d\u5b66\u4e60\u7684\u77e5\u8bc6\u548c\u7ecf\u9a8c\uff0c\u8fd9\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u662f\u5fc5\u8981\u7684\uff0c\u4f8b\u5982\u5f53\u60a8\u9700\u8981\u6539\u53d8\u73af\u5883\u6216\u4efb\u52a1\u65f6\u3002\u91cd\u65b0\u521d\u59cb\u5316Q\u8868\u4e3a\u96f6\u610f\u5473\u7740\u6a21\u578b\u9700\u8981\u91cd\u65b0\u63a2\u7d22\u73af\u5883\u5e76\u91cd\u65b0\u5b66\u4e60\u6700\u4f18\u7b56\u7565\u3002\u56e0\u6b64\uff0c\u60a8\u53ef\u80fd\u4f1a\u89c2\u5bdf\u5230\u5b66\u4e60\u8fc7\u7a0b\u4e2d\u7684\u6027\u80fd\u6ce2\u52a8\u3002<\/p>\n<p><strong>\u5728\u4ec0\u4e48\u65f6\u5019\u9700\u8981\u91cd\u7f6eQ\u8868\uff1f<\/strong><br \/>\u60a8\u53ef\u80fd\u9700\u8981\u91cd\u7f6eQ\u8868\u7684\u60c5\u51b5\u5305\u62ec\uff1a\u6539\u53d8\u4e86\u73af\u5883\u7684\u67d0\u4e9b\u53c2\u6570\u3001\u5f15\u5165\u4e86\u65b0\u7684\u72b6\u6001\u6216\u52a8\u4f5c\u3001\u6a21\u578b\u8bad\u7ec3\u5931\u8d25\u5e76\u60f3\u4ece\u5934\u5f00\u59cb\u5b66\u4e60\u7b49\u3002\u91cd\u7f6eQ\u8868\u53ef\u4ee5\u5e2e\u52a9\u60a8\u6e05\u9664\u65e7\u7684\u3001\u4e0d\u518d\u9002\u7528\u7684\u77e5\u8bc6\uff0c\u4ee5\u4fbf\u6a21\u578b\u80fd\u591f\u9002\u5e94\u65b0\u7684\u5b66\u4e60\u73af\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u91cd\u7f6eQ\u8868\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u91cd\u65b0\u521d\u59cb\u5316Q\u8868\u3001\u4f7f\u7528\u9ed8\u8ba4\u503c\u8986\u76d6Q\u8868\u7684\u5185\u5bb9\u3001\u5229\u7528numpy\u6216pandas\u5e93\u8fdb [&hellip;]","protected":false},"author":3,"featured_media":975224,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975219"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=975219"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975219\/revisions"}],"predecessor-version":[{"id":975226,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975219\/revisions\/975226"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/975224"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=975219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=975219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=975219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}