{"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\/ja\/sigmoid-function-visualization-in-python\/","title":{"rendered":"Python\u3092\u5229\u7528\u3057\u305f\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u306e\u5b9f\u88c5\u3068\u53ef\u8996\u5316\uff1a\u5fae\u5206\u307e\u3067\u5b8c\u5168\u306b\u7406\u89e3\u3059\u308b"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/ailib.secondlife.lol\/sigmoid-func-derivative-and-reason-for-use\/\">\u30b7\u30b0\u30e2\u30a4\u30c9(Sigmoid)\u95a2\u6570<\/a><\/strong>\u306f\u30c7\u30a3\u30fc\u30d7\u30e9\u30fc\u30cb\u30f3\u30b0\u3067\u91cd\u8981\u306a\u6d3b\u6027\u5316\u95a2\u6570\u3067\u3001\u4e3b\u306b\u30d0\u30a4\u30ca\u30ea\u5206\u985e\u554f\u984c\u3067\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f <strong><a href=\"https:\/\/www.python.org\/\" target=\"_blank\" rel=\"noopener\">\u30d1\u30a4\u30bd\u30f3<\/a><\/strong>\u3092\u4f7f\u3063\u3066\u3053\u306e\u95a2\u6570\u3092\u76f4\u63a5\u5b9f\u88c5\u3057\u3066\u3001\u30b0\u30e9\u30d5\u3067\u53ef\u8996\u5316\u3059\u308b\u904e\u7a0b\u3092\u8aac\u660e\u3057\u307e\u3059\u3002 \u3055\u3089\u306b\u3001\u3053\u306e\u95a2\u6570\u3092\u30b0\u30e9\u30d5\u3067\u53ef\u8996\u5316\u3057\u307e\u3059\u3001 <strong>\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u5fae\u5206<\/strong>\u3082\u5b9f\u88c5\u3057\u3066\u3001\u305d\u306e\u53ef\u8996\u5316\u7d50\u679c\u307e\u3067\u4e00\u7dd2\u306b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002 \u5b9f\u7fd2\u30b3\u30fc\u30c9\u3092\u898b\u306a\u304c\u3089\u3001Sigmoid\u95a2\u6570\u306e\u52d5\u4f5c\u539f\u7406\u3092\u3088\u308a\u660e\u78ba\u306b\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\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\">\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sigmoid\u95a2\u6570\u306f\u6b21\u306e\u3088\u3046\u306a\u5f0f\u3067\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002<\/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\">\u3053\u306e\u95a2\u6570\u306f\u5165\u529b\u5024\u30920\u30681\u306e\u9593\u306e\u5024\u306b\u5909\u63db\u3057\u3066\u304f\u308c\u308b\u975e\u7dda\u5f62\u95a2\u6570\u3067\u3001\u4e3b\u306b\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u6d3b\u6027\u5316\u95a2\u6570\u3068\u3057\u3066\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u5f0f\u3092Python\u306e\u53ef\u8996\u5316\u5b9f\u88c5\u3092\u3057\u3066\u3001\u76f4\u63a5\u30b0\u30e9\u30d5\u3067\u63cf\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sigmoid\u95a2\u6570\u306ePython\u306b\u3088\u308b\u53ef\u8996\u5316\u306e\u5b9f\u88c5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u3001\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u3092Python\u30b3\u30fc\u30c9\u3067\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy as np\nimport matplotlib.pyplot as plt\n\n# \u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u306e\u5b9a\u7fa9\ndef sigmoid(x)\uff1a\n    return 1 \/ (1 + np.exp(-x))\n\n# x\u306e\u7bc4\u56f2\u8a2d\u5b9a\nx = np.linspace(-10, 10, 100)\n\n# \u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u9069\u7528\ny = sigmoid(x)\n\n#\u306e\u53ef\u8996\u5316\nplt.plot(x, y, label='Sigmoid')\nplt.title('Sigmoid Function')\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\u306e\u30b3\u30fc\u30c9\u306fSigmoid\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3001\u305d\u308c\u3092\u8996\u899a\u5316\u3057\u305f\u3082\u306e\u3067\u3059\u3002 <code>np.linspace<\/code>\u3092\u4f7f\u7528\u3057\u3066-10\u304b\u308910\u307e\u3067\u306e\u5024\u3092\u751f\u6210\u3057\u3001\u5404\u5024\u3092Sigmoid\u95a2\u6570\u306b\u9069\u7528\u3057\u3066 <code>y<\/code> \u5024\u3092\u8a08\u7b97\u3057\u305f\u5f8c\u3001\u30b0\u30e9\u30d5\u3092\u63cf\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u30b3\u30fc\u30c9\u89e3\u8aac<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>numpy\u3092np\u3068\u3057\u3066\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b<\/code>: \u6570\u5024\u8a08\u7b97\u306e\u305f\u3081\u306eNumPy\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>matplotlib.pyplot as plt \u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/code>: \u30b0\u30e9\u30d5\u3092\u53ef\u8996\u5316\u3059\u308b\u305f\u3081\u306eMatplotlib\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>def sigmoid(x): return 1 \/ (1 + np.exp(-x))<\/code>: Sigmoid\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u3053\u306e\u95a2\u6570\u306f\u5165\u529b\u5024\u30920\u30681\u306e\u9593\u306e\u5024\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>x = np.linspace(-10, 10, 100)<\/code>\u3092\u6307\u5b9a\u3057\u307e\u3059\uff1a-10\u304b\u308910\u307e\u3067100\u500b\u306e\u7b49\u9593\u9694\u306e\u70b9\u3092\u751f\u6210\u3057\u3001x\u8ef8\u306e\u5024\u3068\u3057\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>y = sigmoid(x)<\/code>: \u751f\u6210\u3055\u308c\u305fx\u5024\u306b\u5bfe\u3057\u3066Sigmoid\u95a2\u6570\u3092\u9069\u7528\u3057\u3066y\u5024\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.plot(x, y, label='Sigmoid')<\/code>: x\u3068y\u306e\u5024\u3092\u5229\u7528\u3057\u3066Sigmoid\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u3092\u63cf\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.title('Sigmoid Function')<\/code>: \u30b0\u30e9\u30d5\u306e\u30bf\u30a4\u30c8\u30eb\u3092\u300cSigmoid Function\u300d\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.xlabel('x')<\/code>,\u00a0<code>plt.ylabel('S(x)')<\/code>: x \u8ef8\u3068 y \u8ef8\u306e\u30e9\u30d9\u30eb\u3092\u305d\u308c\u305e\u308c 'x' \u3068 'S(x)' \u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.grid(True)<\/code>: \u30b0\u30e9\u30d5\u306b\u30b0\u30ea\u30c3\u30c9\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.legend()<\/code>: \u30b0\u30e9\u30d5\u306b\u51e1\u4f8b\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.show()<\/code>: \u5b8c\u6210\u3057\u305f\u30b0\u30e9\u30d5\u3092\u753b\u9762\u306b\u8868\u793a\u3057\u307e\u3059\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>( Python\u3067\u53ef\u8996\u5316\u3057\u305f\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570 )<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Sigmoid\u95a2\u6570\u5fae\u5206<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sigmoid\u95a2\u6570\u306e\u5fae\u5206\u306f\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3055\u308c\u307e\u3059\uff1a<\/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\">\u3053\u306e\u5fae\u5206\u95a2\u6570\u3082Python\u3067\u5b9f\u88c5\u3057\u3066\u8996\u899a\u5316\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u5fae\u5206\u306e\u5b9a\u7fa9\ndef sigmoid_derivative(x)\uff1a\n    return sigmoid(x) * (1 - sigmoid(x))\n\n#\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u5fae\u5206\u3092\u9069\u7528\u3057\u307e\u3059\u3002\ny_deriv = sigmoid_derivative(x)\n\n#\u306e\u53ef\u8996\u5316\nplt.plot(x, y_deriv, label='Sigmoid Derivative', color='orange')\nplt.title('Sigmoid Derivative Function')\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\">\u3053\u306e\u30b3\u30fc\u30c9\u306fSigmoid\u95a2\u6570\u306e\u5fae\u5206\u3092\u8a08\u7b97\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u8996\u899a\u5316\u3057\u307e\u3059\u3002\u5fae\u5206\u5024\u306f\u5143\u306eSigmoid\u95a2\u6570\u304b\u3089\u5c0e\u51fa\u3055\u308c\u3001\u52fe\u914d\u304c\u6700\u3082\u5927\u304d\u3044\u533a\u9593\u304cx=0\u4ed8\u8fd1\u3067\u3042\u308b\u3053\u3068\u304c\u30b0\u30e9\u30d5\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u30b3\u30fc\u30c9\u89e3\u8aac<\/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>: Sigmoid\u95a2\u6570\u306e\u5fae\u5206\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002Sigmoid\u95a2\u6570\u306e\u5fae\u5206\u306fS(x) * (1 - S(x))\u3067\u8868\u73fe\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>y_deriv = sigmoid_derivative(x)<\/code>: \u5148\u306b\u5b9a\u7fa9\u3057\u305fx\u5024\u306b\u5bfe\u3057\u3066Sigmoid\u95a2\u6570\u306e\u5fae\u5206\u3092\u9069\u7528\u3057\u3066y_deriv\u5024\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.plot(x, y_deriv, label='sigmoid derivative', color='orange')<\/code>: x\u3068y_deriv\u306e\u5024\u3092\u5229\u7528\u3057\u3066Sigmoid\u95a2\u6570\u306e\u5fae\u5206\u30b0\u30e9\u30d5\u3092\u30aa\u30ec\u30f3\u30b8\u8272\u3067\u63cf\u753b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.title('Sigmoid Derivative Function')<\/code>: \u30b0\u30e9\u30d5\u306e\u30bf\u30a4\u30c8\u30eb\u3092\u300cSigmoid Derivative Function\u300d\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.xlabel('x')<\/code>,\u00a0<code>plt.ylabel(\"S'(x)\")<\/code>: x\u8ef8\u3068y\u8ef8\u306e\u30e9\u30d9\u30eb\u3092\u305d\u308c\u305e\u308c'x'\u3068'S'(x)'\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.grid(True)<\/code>: \u30b0\u30e9\u30d5\u306b\u30b0\u30ea\u30c3\u30c9\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.legend()<\/code>: \u30b0\u30e9\u30d5\u306b\u51e1\u4f8b\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.show()<\/code>: \u5b8c\u6210\u3057\u305f\u30b0\u30e9\u30d5\u3092\u753b\u9762\u306b\u8868\u793a\u3057\u307e\u3059\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\">( \u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u5fae\u5206\u306e\u53ef\u8996\u5316 )<\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">Sigmoid\u95a2\u6570\u3068\u5fae\u5206\u95a2\u6570\u306e\u6bd4\u8f03\u53ef\u8996\u5316<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u3001Sigmoid\u95a2\u6570\u3068\u305d\u306e\u5fae\u5206\u5024\u3092\u540c\u3058\u30b0\u30e9\u30d5\u3067\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002 \u3053\u308c\u306b\u3088\u308a\u3001Sigmoid\u95a2\u6570\u306e\u7279\u6027\u3068\u5fae\u5206\u95a2\u6570\u306e\u5909\u5316\u3092\u4e00\u76ee\u3067\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy as np\nimport matplotlib.pyplot as plt\n\n# Sigmoid\u95a2\u6570\u306e\u5b9a\u7fa9\ndef sigmoid(x)\uff1a\n    return 1 \/ (1 + np.exp(-x))\n\n# x\u306e\u7bc4\u56f2\u8a2d\u5b9a\nx = np.linspace(-10, 10, 100)\n\n# Sigmoid\u95a2\u6570\u9069\u7528\ny = sigmoid(x)\n\n# Sigmoid\u95a2\u6570\u306e\u5fae\u5206\u8a08\u7b97\ny_deriv = y * (1 - y) # derivative of sigmoid\n\n# Sigmoid\u95a2\u6570\u3068\u5fae\u5206\u95a2\u6570\u3092\u4e00\u7dd2\u306b\u53ef\u8996\u5316\u3057\u307e\u3059\u3002\nplt.plot(x, y, label='Sigmoid', color='blue')\nplt.plot(x, y_deriv, label='Sigmoid Derivative', color='orange') # y_deriv \u304c\u5b9a\u7fa9\u3055\u308c\u307e\u3057\u305f\u3002\nplt.title('\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u3068\u305d\u306e\u5fae\u5206')\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\u306e\u30b3\u30fc\u30c9\u306f\u3001Sigmoid\u95a2\u6570\u3068\u5fae\u5206\u95a2\u6570\u3092\u540c\u6642\u306b\u8996\u899a\u5316\u3057\u305f\u3082\u306e\u3067\u3059\u3002 \u3053\u306e\u30b0\u30e9\u30d5\u3092\u901a\u3058\u3066\u3001Sigmoid\u95a2\u6570\u304cx\u306e\u5024\u306b\u3088\u3063\u3066\u3069\u306e\u3088\u3046\u306b\u5909\u5316\u3059\u308b\u306e\u304b\u3001\u305d\u306e\u5fae\u5206\u304c\u3069\u306e\u3088\u3046\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u793a\u3059\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\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>( \u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u3068\u5fae\u5206\u95a2\u6570\u306e\u6bd4\u8f03\u53ef\u8996\u5316 )<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u7406\u7531<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570<\/strong>\u306f\u69d8\u3005\u306a\u7406\u7531\u3067\u30c7\u30a3\u30fc\u30d7\u30e9\u30fc\u30cb\u30f3\u30b0\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002 \u305d\u306e\u4e2d\u3067\u3082\u4ee3\u8868\u7684\u306a\u7406\u7531\u306f\u3001\u30d0\u30a4\u30ca\u30ea\u5206\u985e\u554f\u984c\u3067\u51fa\u529b\u5024\u30920\u30681\u306e\u9593\u306b\u5236\u9650\u3057\u3066\u78ba\u7387\u3068\u3057\u3066\u89e3\u91c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3089\u3067\u3059\u3002 \u307e\u305f\u3001\u5fae\u5206\u304c\u53ef\u80fd\u306a\u306e\u3067\u3001\u9006\u4f1d\u64ad(Backpropagation)\u904e\u7a0b\u3067\u52fe\u914d\u306e\u8a08\u7b97\u304c\u5bb9\u6613\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u52fe\u914d\u6d88\u5931\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u3044\u3046\u6b20\u70b9\u304c\u3042\u308a\u3001\u73fe\u5728\u306fReLU\u306a\u3069\u306e\u95a2\u6570\u304c\u3088\u308a\u591a\u304f\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6574\u7406\u3059\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f <strong>Python\u3092\u5229\u7528\u3057\u305f\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u306e\u5b9f\u88c5<\/strong>\u3068\u305d\u306e\u5fae\u5206\u3092\u53ef\u8996\u5316\u3059\u308b\u904e\u7a0b\u3092\u6271\u3044\u307e\u3057\u305f\u3002\u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u306f\u30c7\u30a3\u30fc\u30d7\u30e9\u30fc\u30cb\u30f3\u30b0\u3067\u91cd\u8981\u306a\u6d3b\u6027\u5316\u95a2\u6570\u3067\u3042\u308a\u3001\u30d0\u30a4\u30ca\u30ea\u5206\u985e\u554f\u984c\u3067\u78ba\u7387\u8a08\u7b97\u306b\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u308c\u3092\u76f4\u63a5\u5b9f\u88c5\u3057\u3066\u30b0\u30e9\u30d5\u3092\u63cf\u304d\u306a\u304c\u3089\u3001\u95a2\u6570\u306e\u52d5\u4f5c\u539f\u7406\u3068\u305d\u306e\u5fae\u5206\u306e\u5909\u5316\u3092\u7c21\u5358\u306b\u7406\u89e3\u3067\u304d\u305f\u3068\u601d\u3044\u307e\u3059\u3002 \u30b7\u30b0\u30e2\u30a4\u30c9\u95a2\u6570\u306e\u6982\u5ff5\u3068Python\u306e\u5b9f\u7fd2\u3092\u901a\u3058\u3066\u3001\u30c7\u30a3\u30fc\u30d7\u30e9\u30fc\u30cb\u30f3\u30b0\u30e2\u30c7\u30eb\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3057\u3001\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>\u30b7\u30b0\u30e2\u30a4\u30c9(Sigmoid)\u95a2\u6570\u306f\u30c7\u30a3\u30fc\u30d7\u30e9\u30fc\u30cb\u30f3\u30b0\u3067\u91cd\u8981\u306a\u6d3b\u6027\u5316\u95a2\u6570\u3067\u3042\u308a\u3001\u4e3b\u306b\u30d0\u30a4\u30ca\u30ea\u5206\u985e\u554f\u984c\u3067...<\/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\/ja\/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\/ja\/wp-json\/wp\/v2\/posts\/2448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/comments?post=2448"}],"version-history":[{"count":14,"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/posts\/2448\/revisions"}],"predecessor-version":[{"id":3368,"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/posts\/2448\/revisions\/3368"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/media\/2458"}],"wp:attachment":[{"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/media?parent=2448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/categories?post=2448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/secondlife.lol\/ja\/wp-json\/wp\/v2\/tags?post=2448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}