{"id":2448,"date":"2024-09-14T18:29:48","date_gmt":"2024-09-14T09:29:48","guid":{"rendered":"https:\/\/secondlife.lol\/?p=2448"},"modified":"2024-11-13T22:22:17","modified_gmt":"2024-11-13T13:22:17","slug":"sigmoid-function-visualization-in-python","status":"publish","type":"post","link":"https:\/\/secondlife.lol\/zh\/sigmoid-function-visualization-in-python\/","title":{"rendered":"\u7528 Python \u5b9e\u73b0\u5e76\u53ef\u89c6\u5316 Sigmoid \u51fd\u6570\uff1a\u6df1\u5165\u7406\u89e3\u884d\u751f\u5de5\u5177"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/ailib.secondlife.lol\/sigmoid-func-derivative-and-reason-for-use\/\">\u4e59\u72b6\u7ed3\u80a0\u529f\u80fd<\/a><\/strong>\u662f\u6df1\u5ea6\u5b66\u4e60\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u6fc0\u6d3b\u51fd\u6570\uff0c\u4e3b\u8981\u7528\u4e8e\u4e8c\u5143\u5206\u7c7b\u95ee\u9898\u3002\u5728\u672c\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u5b66\u4e60\u5982\u4f55\u4f7f\u7528 <strong><a href=\"https:\/\/www.python.org\/\" target=\"_blank\" rel=\"noopener\">Python<\/a><\/strong>\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u5c06\u5411\u60a8\u5c55\u793a\u5982\u4f55\u81ea\u5df1\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\uff0c\u5e76\u5728\u56fe\u8868\u4e2d\u5c06\u5176\u53ef\u89c6\u5316\u3001 <strong>\u6b63\u4f59\u5f26\u51fd\u6570\u7684\u5bfc\u6570<\/strong>\u8bf7\u8ddf\u968f\u5b9e\u9a8c\u4ee3\u7801\uff0c\u66f4\u6e05\u695a\u5730\u4e86\u89e3 Sigmoid \u51fd\u6570\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n\n\n<style>.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap{padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);border-top:3px solid var(--global-palette2, #2B6CB0);border-right:3px solid var(--global-palette2, #2B6CB0);border-bottom:3px solid var(--global-palette2, #2B6CB0);border-left:3px solid var(--global-palette2, #2B6CB0);border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title-wrap{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title-wrap{color:var(--global-palette2, #2B6CB0);}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title{color:var(--global-palette2, #2B6CB0);font-size:28px;font-weight:regular;font-style:normal;}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap .kb-table-of-content-list{color:var(--global-palette1, #3182CE);line-height:2em;font-weight:regular;font-style:normal;margin-top:var(--global-kb-spacing-sm, 1.5rem);margin-right:0px;margin-bottom:0px;margin-left:0px;}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap .kb-table-of-content-list .kb-table-of-contents__entry:hover{color:var(--global-palette6, #718096);}@media all and (max-width: 1024px){.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap{border-top:3px solid var(--global-palette2, #2B6CB0);border-right:3px solid var(--global-palette2, #2B6CB0);border-bottom:3px solid var(--global-palette2, #2B6CB0);border-left:3px solid var(--global-palette2, #2B6CB0);}}@media all and (max-width: 1024px){.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title{font-size:28px;}}@media all and (max-width: 767px){.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap{border-top:3px solid var(--global-palette2, #2B6CB0);border-right:3px solid var(--global-palette2, #2B6CB0);border-bottom:3px solid var(--global-palette2, #2B6CB0);border-left:3px solid var(--global-palette2, #2B6CB0);}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title{font-size:28px;}}<\/style>\n\n\n<h2 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u4e59\u683c\u51fd\u6570\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u897f\u683c\u83ab\u5fb7\u51fd\u6570\u7684\u5b9a\u4e49\u516c\u5f0f\u4e3a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"wp-katex-eq\" data-display=\"false\">S(x) = \\frac{1}{1 + e^{-x}}<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u51fd\u6570\u662f\u4e00\u4e2a\u975e\u7ebf\u6027\u51fd\u6570\uff0c\u7528\u4e8e\u5c06\u8f93\u5165\u503c\u8f6c\u6362\u4e3a\u4ecb\u4e8e 0 \u548c 1 \u4e4b\u95f4\u7684\u503c\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u7528 Python \u5b9e\u73b0\u8fd9\u4e2a\u516c\u5f0f\u7684\u53ef\u89c6\u5316\uff0c\u5e76\u7ed8\u5236\u5b83\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9e\u73b0\u897f\u683c\u83ab\u5fb7\u51fd\u6570\u7684 Python \u53ef\u89c6\u5316<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u7528 Python \u4ee3\u7801\u5b9e\u73b0 sigmoid \u51fd\u6570\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c06 numpy \u5bfc\u5165 np\nimport matplotlib.pyplot as plt\n\n\u5b9a\u4e49 # sigmoid \u51fd\u6570\ndef sigmoid(x)\uff1a\n    return 1 \/ (1 + np.exp(-x))\n\n\u8bbe\u7f6e # x \u8303\u56f4\nx = np.linspace(-10, 10, 100)\n\n\u5e94\u7528 # sigmoid \u51fd\u6570\ny = sigmoid(x)\n\n\u53ef\u89c6\u5316 #\nplt.plot(x, y, label='Sigmoid')\nplt.title('Sigmoid \u51fd\u6570')\nplt.xlabel('x')\nplt.ylabel('S(x)')\nplt.grid(True)\nplt.legend()\nplt.show()<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u9762\u7684\u4ee3\u7801\u5b9a\u4e49\u4e86\u4e00\u4e2a Sigmoid \u51fd\u6570\uff0c\u5e76\u5c06\u5176\u53ef\u89c6\u5316\u3002 <code>np.linspace<\/code>\u751f\u6210\u4ece -10 \u5230 10 \u7684\u503c\uff0c\u7136\u540e\u5c06\u6bcf\u4e2a\u503c\u5e94\u7528\u5230 Sigmoid \u51fd\u6570\uff0c\u521b\u5efa <code>y<\/code> \u8ba1\u7b97\u51fa\u6570\u503c\u540e\uff0c\u7ed8\u5236\u56fe\u8868\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4ee3\u7801\u8bc4\u6ce8<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>\u5bfc\u5165 numpy \u4e3a np<\/code>\u5bfc\u5165 NumPy \u5e93\u8fdb\u884c\u6570\u503c\u8ba1\u7b97\u3002<\/li>\n\n\n\n<li><code>import matplotlib.pyplot as plt<\/code>\u5bfc\u5165 Matplotlib \u5e93\u4ee5\u5b9e\u73b0\u56fe\u5f62\u53ef\u89c6\u5316\u3002<\/li>\n\n\n\n<li><code>def sigmoid(x): return 1 \/ (1 + np.exp(-x))<\/code>\u5b9a\u4e49 Sigmoid \u51fd\u6570\u3002\u8be5\u51fd\u6570\u5c06\u8f93\u5165\u503c\u8f6c\u6362\u4e3a\u4ecb\u4e8e 0 \u548c 1 \u4e4b\u95f4\u7684\u503c\u3002<\/li>\n\n\n\n<li><code>x = np.linspace(-10, 10, 100)<\/code>:\u751f\u6210 100 \u4e2a\u95f4\u9694\u5747\u5300\u7684\u70b9\uff0c\u4ece -10 \u5230 10\uff0c\u7528\u4f5c x \u8f74\u503c\u3002<\/li>\n\n\n\n<li><code>y = sigmoid(x)<\/code>\u8ba1\u7b97 y \u503c\uff1a\u5bf9\u751f\u6210\u7684 x \u503c\u5e94\u7528 Sigmoid \u51fd\u6570\u8ba1\u7b97 y \u503c\u3002<\/li>\n\n\n\n<li><code>plt.plot(x, y, label='Sigmoid')<\/code>\u7528 x \u548c y \u7684\u503c\u7ed8\u5236 Sigmoid \u51fd\u6570\u7684\u56fe\u5f62\u3002<\/li>\n\n\n\n<li><code>plt.title('Sigmoid \u51fd\u6570')<\/code>\u8bbe\u7f6e\u56fe\u8868\u6807\u9898\u4e3a \"\u897f\u683c\u83ab\u51fd\u6570\"\u3002<\/li>\n\n\n\n<li><code>plt.xlabel('x')<\/code>,\u00a0<code>plt.ylabel('S(x)')<\/code>\u8bbe\u7f6e x \u8f74\u548c y \u8f74\u7684\u6807\u7b7e\u5206\u522b\u4e3a \"x \"\u548c \"S(x)\"\u3002<\/li>\n\n\n\n<li><code>plt.grid(True)<\/code>\u5728\u56fe\u5f62\u4e0a\u663e\u793a\u7f51\u683c\u3002<\/li>\n\n\n\n<li><code>plt.legend()<\/code>\u56fe\u4f8b\uff1a\u4e3a\u56fe\u8868\u6dfb\u52a0\u56fe\u4f8b\u3002<\/li>\n\n\n\n<li><code>plt.show()<\/code>\u5728\u5c4f\u5e55\u4e0a\u663e\u793a\u5b8c\u6210\u7684\u56fe\u5f62\u3002<\/li>\n<\/ul>\n\n\n<style>.kb-image2448_029530-ed .kb-image-has-overlay:after{opacity:0.3;border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;}.kb-image2448_029530-ed img.kb-img, .kb-image2448_029530-ed .kb-img img{border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}<\/style>\n<div class=\"wp-block-kadence-image kb-image2448_029530-ed\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"567\" height=\"455\" src=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-7.jpg\" alt=\"\uc2dc\uadf8\ubaa8\uc774\ub4dc \ud568\uc218 \uc2dc\uac01\ud654\" class=\"kb-img wp-image-2451\" srcset=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-7.jpg 567w, https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-7-300x241.jpg 300w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><figcaption>(\u5728 Python \u4e2d\u53ef\u89c6\u5316\u7684 Sigmoid \u51fd\u6570\uff09<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e59\u6b21\u51fd\u6570\u884d\u751f\u7269<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">sigmoid \u51fd\u6570\u7684\u5bfc\u6570\u5b9a\u4e49\u5982\u4e0b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"wp-katex-eq\" data-display=\"false\">S'(x) = S(x) \\times (1 - S(x))<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ba9\u6211\u4eec\u4e5f\u7528 Python \u6765\u5b9e\u73b0\u5e76\u53ef\u89c6\u5316\u8fd9\u4e2a\u5fae\u5206\u51fd\u6570\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u897f\u683c\u83ab\u51fd\u6570\u5bfc\u6570\u5b9a\u4e49\ndef sigmoid_derivative(x)\uff1a\n    return sigmoid(x) * (1 - sigmoid(x))\n\n\u5e94\u7528 # sigmoid \u51fd\u6570\u5bfc\u6570\ny_deriv = sigmoid_derivative(x)\n\n\u53ef\u89c6\u5316 #\nplt.plot(x, y_deriv, label='Sigmoid Derivative', color='orange')\nplt.title('Sigmoid \u884d\u751f\u51fd\u6570')\nplt.xlabel('x')\nplt.ylabel(\"S'(x)\")\nplt.grid(True)\nplt.legend()\nplt.show()<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u6bb5\u4ee3\u7801\u8ba1\u7b97\u4e00\u4e2a Sigmoid \u51fd\u6570\u7684\u5bfc\u6570\uff0c\u5e76\u5c06\u7ed3\u679c\u53ef\u89c6\u5316\u3002\u5bfc\u6570\u662f\u4ece\u539f\u59cb Sigmoid \u51fd\u6570\u5bfc\u51fa\u7684\uff0c\u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u659c\u7387\u6700\u5927\u7684\u533a\u57df\u5728 x=0 \u9644\u8fd1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4ee3\u7801\u8bc4\u6ce8<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>def sigmoid_derivative(x): return sigmoid(x) * (1 - sigmoid(x))<\/code>\u5b9a\u4e49 sigmoid \u51fd\u6570\u7684\u5bfc\u6570\u3002Sigmoid \u51fd\u6570\u7684\u5bfc\u6570\u8868\u793a\u4e3a S(x) * (1 - S(x))\u3002<\/li>\n\n\n\n<li><code>y_deriv = sigmoid_derivative(x)<\/code>\u8ba1\u7b97 y_deriv \u7684\u503c\uff0c\u65b9\u6cd5\u662f\u5c06 Sigmoid \u51fd\u6570\u7684\u5bfc\u6570\u5e94\u7528\u4e8e\u524d\u9762\u5b9a\u4e49\u7684 x \u503c\u3002<\/li>\n\n\n\n<li><code>plt.plot(x, y_deriv, label='Sigmoid Derivative', color='orange')<\/code>\u8bf4\u660e\uff1a\u4f7f\u7528 x \u548c y_deriv \u7684\u503c\u7ed8\u5236\u6a59\u8272\u7684 Sigmoid \u51fd\u6570\u5bfc\u6570\u56fe\u3002<\/li>\n\n\n\n<li><code>plt.title('Sigmoid \u884d\u751f\u51fd\u6570')<\/code>\u8bbe\u7f6e\u56fe\u8868\u6807\u9898\u4e3a \"Sigmoid \u884d\u751f\u51fd\u6570\"\u3002<\/li>\n\n\n\n<li><code>plt.xlabel('x')<\/code>,\u00a0<code>plt.ylabel(\"S'(x)\")<\/code>\u8bbe\u7f6e x \u8f74\u548c y \u8f74\u7684\u6807\u7b7e\u5206\u522b\u4e3a \"x \"\u548c \"S'(x)\"\u3002<\/li>\n\n\n\n<li><code>plt.grid(True)<\/code>\u5728\u56fe\u5f62\u4e0a\u663e\u793a\u7f51\u683c\u3002<\/li>\n\n\n\n<li><code>plt.legend()<\/code>\u56fe\u4f8b\uff1a\u4e3a\u56fe\u8868\u6dfb\u52a0\u56fe\u4f8b\u3002<\/li>\n\n\n\n<li><code>plt.show()<\/code>\u5728\u5c4f\u5e55\u4e0a\u663e\u793a\u5b8c\u6210\u7684\u56fe\u5f62\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"576\" height=\"455\" src=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-10.jpg\" alt=\"\uc2dc\uadf8\ubaa8\uc774\ub4dc \ud568\uc218 \ubbf8 \ubd84 \uc2dc\uac01\ud654\" class=\"wp-image-2456\" srcset=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-10.jpg 576w, https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-10-300x237.jpg 300w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/><figcaption class=\"wp-element-caption\">(\u76f4\u89c2\u663e\u793a\u66f2\u7ebf\u51fd\u6570\u7684\u5bfc\u6570\uff09<\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">\u53ef\u89c6\u5316 Sigmoid \u51fd\u6570\u548c\u5fae\u5206\u51fd\u6570<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u5728\u540c\u4e00\u5f20\u56fe\u4e0a\u6bd4\u8f83\u4e00\u4e0b sigmoid \u51fd\u6570\u53ca\u5176\u5bfc\u6570\uff0c\u8fd9\u6837\u6211\u4eec\u5c31\u80fd\u4e00\u76ee\u4e86\u7136\u5730\u770b\u5230 sigmoid \u51fd\u6570\u7684\u7279\u5f81\u53ca\u5176\u5bfc\u6570\u7684\u53d8\u5316\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c06 numpy \u5bfc\u5165 np\nimport matplotlib.pyplot as plt\n\n\u5b9a\u4e49 # Sigmoid \u51fd\u6570\ndef sigmoid(x)\uff1a\n    return 1 \/ (1 + np.exp(-x))\n\n\u8bbe\u7f6e # x \u7684\u8303\u56f4\nx = np.linspace(-10, 10, 100)\n\n# \u5e94\u7528 sigmoid \u51fd\u6570\ny = sigmoid(x)\n\n\u8ba1\u7b97 # Sigmoid \u51fd\u6570\u7684\u5bfc\u6570\ny_deriv = y * (1 - y) # sigmoid \u7684\u5bfc\u6570\n\n# \u5c06 sigmoid \u51fd\u6570\u548c\u5bfc\u6570\u51fd\u6570\u53ef\u89c6\u5316\nplt.plot(x, y, label='Sigmoid', color='blue')\nplt.plot(x, y_deriv, label='Sigmoid Derivative', color='orange') # \u73b0\u5728\u5df2\u5b9a\u4e49 y_deriv\nplt.title('Sigmoid \u51fd\u6570\u53ca\u5176\u5bfc\u6570')\nplt.xlabel('x')\nplt.ylabel('Value')\nplt.grid(True)\nplt.legend()\nplt.show()<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u9762\u7684\u4ee3\u7801\u540c\u65f6\u663e\u793a\u4e86 sigmoid \u51fd\u6570\u53ca\u5176\u5bfc\u6570\uff0c\u56fe\u5f62\u663e\u793a\u4e86 sigmoid \u51fd\u6570\u5982\u4f55\u968f x \u53d8\u5316\uff0c\u4ee5\u53ca\u5176\u5bfc\u6570\u5982\u4f55\u663e\u793a\u4e00\u79cd\u6a21\u5f0f\u3002<\/p>\n\n\n<style>.kb-image2448_e9b56c-00 .kb-image-has-overlay:after{opacity:0.3;border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;}.kb-image2448_e9b56c-00 img.kb-img, .kb-image2448_e9b56c-00 .kb-img img{border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}<\/style>\n<div class=\"wp-block-kadence-image kb-image2448_e9b56c-00\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"567\" height=\"455\" src=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-8.jpg\" alt=\"\uc2dc\uadf8\ubaa8\uc774\ub4dc \ud568\uc218\uc640 \ubbf8\ubd84 \ud568\uc218 \ube44\uad50 \uc2dc\uac01\ud654\" class=\"kb-img wp-image-2453\" srcset=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-8.jpg 567w, https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/image-8-300x241.jpg 300w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><figcaption>(\u76f4\u89c2\u663e\u793a\u4e59\u6b21\u51fd\u6570\u4e0e\u5fae\u5206\u51fd\u6570\u7684\u5173\u7cfb\uff09<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u4f7f\u7528\u897f\u683c\u51fd\u6570\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e59\u72b6\u7ed3\u80a0\u529f\u80fd<\/strong>\u5728\u6df1\u5ea6\u5b66\u4e60\u4e2d\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u6709\u51e0\u4e2a\u539f\u56e0\uff0c\u5176\u4e2d\u6700\u91cd\u8981\u7684\u662f\uff0c\u5b83\u53ef\u4ee5\u901a\u8fc7\u9650\u5236\u8f93\u51fa\u503c\u5728 0 \u548c 1 \u4e4b\u95f4\u6765\u89e3\u91ca\u4e8c\u5143\u5206\u7c7b\u95ee\u9898\u4e2d\u7684\u6982\u7387\u3002\u4e0d\u8fc7\uff0c\u5b83\u4eec\u4e5f\u6709\u7f3a\u70b9\uff0c\u90a3\u5c31\u662f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u68af\u5ea6\u6d88\u5931\u95ee\u9898\uff0c\u8fd9\u4e5f\u662f ReLU \u7b49\u51fd\u6570\u73b0\u5728\u66f4\u5e38\u7528\u7684\u539f\u56e0\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ec4\u7ec7\u8d77\u6765<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u672c\u5e16\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 <strong>\u7528 Python \u5b9e\u73b0\u897f\u683c\u83ab\u51fd\u6570<\/strong>\u5e76\u53ef\u89c6\u5316\u5176\u5bfc\u6570\u3002sigmoid \u51fd\u6570\u662f\u6df1\u5ea6\u5b66\u4e60\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u6fc0\u6d3b\u51fd\u6570\uff0c\u5e38\u7528\u4e8e\u8ba1\u7b97\u4e8c\u5143\u5206\u7c7b\u95ee\u9898\u4e2d\u7684\u6982\u7387\u3002\u6211\u4eec\u5e0c\u671b\u901a\u8fc7\u5b66\u4e60 sigmoid \u51fd\u6570\u7684\u6982\u5ff5\u5e76\u5728 Python \u4e2d\u8fdb\u884c\u7ec3\u4e60\uff0c\u60a8\u5c06\u80fd\u591f\u66f4\u597d\u5730\u7406\u89e3\u5e76\u5728\u6df1\u5ea6\u5b66\u4e60\u6a21\u578b\u4e2d\u4f7f\u7528\u5b83\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>Sigmoid \u51fd\u6570\u662f\u6df1\u5ea6\u5b66\u4e60\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u6fc0\u6d3b\u51fd\u6570\uff0c\u4e3b\u8981\u7528\u4e8e\u4e8c\u5143\u5206\u7c7b\u95ee\u9898...<\/p>","protected":false},"author":3,"featured_media":2458,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[7,3],"tags":[],"class_list":["post-2448","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-coding","category-python-coding"],"taxonomy_info":{"category":[{"value":7,"label":"\uc778\uacf5\uc9c0\ub2a5(AI)"},{"value":3,"label":"\ud30c\uc774\uc36c(Python)"}]},"featured_image_src_large":["https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/\uc2dc\uadf8\ubaa8\uc774\ub4dc-\ud568\uc218-\uc2dc\uac01\ud654_20240914_182340_0000-600x600.jpg",600,600,true],"author_info":{"display_name":"TERE","author_link":"https:\/\/secondlife.lol\/zh\/author\/tere\/"},"comment_info":0,"category_info":[{"term_id":7,"name":"\uc778\uacf5\uc9c0\ub2a5(AI)","slug":"ai-coding","term_group":0,"term_taxonomy_id":7,"taxonomy":"category","description":"","parent":20,"count":70,"filter":"raw","cat_ID":7,"category_count":70,"category_description":"","cat_name":"\uc778\uacf5\uc9c0\ub2a5(AI)","category_nicename":"ai-coding","category_parent":20},{"term_id":3,"name":"\ud30c\uc774\uc36c(Python)","slug":"python-coding","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":20,"count":116,"filter":"raw","cat_ID":3,"category_count":116,"category_description":"","cat_name":"\ud30c\uc774\uc36c(Python)","category_nicename":"python-coding","category_parent":20}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/posts\/2448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/comments?post=2448"}],"version-history":[{"count":14,"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/posts\/2448\/revisions"}],"predecessor-version":[{"id":3368,"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/posts\/2448\/revisions\/3368"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/media\/2458"}],"wp:attachment":[{"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/media?parent=2448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/categories?post=2448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/secondlife.lol\/zh\/wp-json\/wp\/v2\/tags?post=2448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}