{"id":4896,"date":"2022-03-02T00:43:12","date_gmt":"2022-03-01T15:43:12","guid":{"rendered":"https:\/\/broaden-your-horizons.com\/ai-ss\/?p=4896"},"modified":"2022-04-06T17:48:27","modified_gmt":"2022-04-06T08:48:27","slug":"feature-of-shape","status":"publish","type":"post","link":"https:\/\/broaden-your-horizons.com\/ai-ss\/numpy\/feature-of-shape\/","title":{"rendered":"NumPy\u306eshape\u8868\u8a18\u306e (2, ) \u3063\u3066\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p><!--\u518d\u5229\u7528\u30d6\u30ed\u30c3\u30af\uff08numpy-header\uff09--><br \/>\n\n<p class=\"backlink\"><a href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/ai-top\/numpy\/\">page:[NumPy\u307e\u3068\u3081]<\/a><\/p>\n<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u9006\u5f15\u304d\u30ad\u30fc\u30ef\u30fc\u30c9\">\u30b5\u30de\u30ea<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>(2, )<ul><li>np.shape\u3067ndarray\uff08NumPy\u914d\u5217\uff09\u306e\u5f62\u72b6\u53d6\u5f97\u3057\u305f\u7d50\u679c<\/li><li>ndarray\u304c1\u6b21\u5143\u306e\u5834\u5408\u306e\u8868\u8a18<\/li><\/ul><\/li><li>\u7279\u5fb4<ul><li>2\u6b21\u5143\u76ee\u304c\u30d6\u30e9\u30f3\u30af\uff08\u7a7a\u767d\uff09\u306b\u306a\u3063\u3066\u3044\u308b<\/li><li>(2)\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u3044\u3044\u3068\u611f\u3058\u308b<\/li><\/ul><\/li><li>(2, )\u3068\u306a\u3063\u3066\u3044\u308b\u7406\u7531<ul><li>\u5206\u304b\u308a\u3084\u3059\u3044\u304b\u3089\uff08\u7406\u7531\u306f\u5f8c\u8ff0\uff09<\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u524d\u63d0<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>np.shape\u3001np.ndim<ul><li>\n<a class=\"movelink\" href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/numpy\/shape-ndim\/\">NumPy:\u3010\u5f62\u72b6\u3001\u6b21\u5143\u3001\u8981\u7d20\u6570\u3011\u306e\u78ba\u8a8d\u65b9\u6cd5<\/a>\n<\/li><\/ul><\/li><li>np.arange<ul><li>\n<a class=\"movelink\" href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/numpy\/arange\/#toc_id_2_1\">NumPy:\u3010\u5e8f\u6570,\u9806\u5217,\u500d\u6570,\u7b49\u5206\u5272\u3011\u306e\u5b9f\u884c\u7d50\u679c<\/a>\n<\/li><\/ul><\/li><li>np.reshape<ul><li>\n<a class=\"movelink\" href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/numpy\/shape-conversion\/#toc_id_3_1\">NumPy:\u3010\u6b21\u5143\u3092\u64cd\u4f5c\u3011\u3059\u308b\u65b9\u6cd5\u3044\u308d\u3044\u308d<\/a>\n<\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u6b21\u5143\u306e\u547c\u3073\u65b9\uff08\u5927\u5207\u306a\u306e\u3067\u2026\uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>(3,4)\u306f\uff1f<ul><li>\u300c3\u300d\u3068\u300c4\u300d\u306e2\u3064\u30672\u6b21\u5143<\/li><li>\u884c\u3068\u5217\u306e\u884c\u5217\u306a\u306e\u30672\u6b21\u5143<\/li><li>\u6b21\u5143\u304c2\u3064\u3042\u308b\u306e\u30672\u6b21\u5143<\/li><\/ul><\/li><li>\u4e00\u756a\u5de6\u6570\u5b57\u306e\u547c\u3073\u65b9<ul><li>\u6700\u521d\u306e\u6b21\u5143<\/li><li><span style=\"color: #adff2f\" class=\"text-color\">1\u6b21\u5143\u76ee\uff08\u63a8\u5968\uff09<\/span><ul><li>\u300c\uff5e\u76ee\u300d\u306f\u5e8f\u6570\uff08\uff5e\u756a\u76ee\uff09\u306b\u306a\u308b<\/li><\/ul><\/li><li>\u7b2c1\u6b21\u5143\uff08\u304a\u3059\u3059\u3081\u3067\u306f\u306a\u3044\uff09<ul><li>\u6d78\u900f\u3057\u3066\u3044\u306a\u3044<\/li><\/ul><\/li><li>0\u6b21\u5143\u30011\u6b21\u5143\uff08\u304a\u3059\u3059\u3081\u3067\u306f\u306a\u3044\uff09<ul><li>\u4eba\u306b\u3088\u3063\u3066\u307e\u3061\u307e\u3061<\/li><li>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u306e0\u3068\u7b2c1\u6b21\u5143\u306e\u300c\u7b2c\u300d\u7701\u7565\u3057\u305f\u3082\u306e\u304c\u30df\u30c3\u30af\u30b9\u3055\u308c\u305f\uff1f<\/li><\/ul><\/li><\/ul><\/li><li>(3,4)\u306e\u300c3\u300d\u306f\uff1f<ul><li>1\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u3067\u3001shape[0]\u3067\u53d6\u5f97\u3067\u304d\u308b<\/li><li>shape[0]\u306a\u306e\u3067\u30010\u6b21\u5143\u3068\u8a00\u3063\u3066\u3057\u307e\u3046\u306e\u3082\u308f\u304b\u308b\u6c17\u304c\u3059\u308b<\/li><\/ul><\/li><li>(3,4)\u306e\u300c4\u300d\u306f\uff1f<ul><li>2\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u3067\u3001shape[1]\u3067\u53d6\u5f97\u3067\u304d\u308b<\/li><\/ul><\/li><li>\u88dc\u8db3\uff1a0\u6b21\u5143\u3068\u306f\uff1f<ul><li>\u30b9\u30ab\u30e9\u30fc\u306e\u3053\u3068<\/li><li>\u30d9\u30af\u30c8\u30eb\u8868\u8a18\u3059\u308b\u3068\u300c()\u300d\uff08\u4e2d\u8eab\u306a\u3057\uff09<\/li><\/ul><\/li><li>\u53c2\u8003<ul><li>\u6b21\u5143\u3092\u8aac\u660e\u3057\u305f\u8868<ul><li>\u5916\u90e8\u30ea\u30f3\u30af\uff1a\n<a class=\"movelink\" href=\"https:\/\/broaden-your-horizons.com\/engineer\/development-preparation\/machine-learning-library-primer\/post-1477\/#toc_id_1_1\">\u30c6\u30f3\u30bd\u30eb\u306e\u6b21\u5143\u306b\u3064\u3044\u3066<\/a>\n<\/li><\/ul><\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u8aac\u660e\">\u8a73\u7d30\u8aac\u660e<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a00\u8449\u3067\u8aac\u660e<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>(2, )\u306f1\u6b21\u5143<ul><li>1\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u306f2<ul><li>array([1,2])\u3084array([10,5])\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf<\/li><\/ul><\/li><\/ul><ul><li>2\u6b21\u5143\u76ee\u306f\u306a\u3044\u306e\u3067\u30d6\u30e9\u30f3\u30af\uff08\u7a7a\u767d\uff09\u306b\u306a\u3063\u3066\u3044\u308b<\/li><li>np.ndim\u3067\u78ba\u8a8d\u3059\u308b\u30681<\/li><\/ul><\/li><li>\u884c\u5217\u306e\u3088\u3046\u306b2\u6b21\u5143\u30c7\u30fc\u30bf\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b<ul><li>\u5f62\u72b6\u306f(1,2)\u306e\u3088\u3046\u306b\u306a\u308b<\/li><li>1\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u306f1\u30012\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u306f2<ul><li>array([[1,2]])\u3084array([[10,5]])\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf<\/li><\/ul><\/li><li>np.ndim\u3067\u78ba\u8a8d\u3059\u308b\u30682<\/li><\/ul><\/li><li>\u4e2d\u8eab\u306e\u30c7\u30fc\u30bf\u306f\u540c\u3058\u306a\u306e\u3067\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u3084\u3059\u3044\u65b9\u3092\u4f7f\u3048\u3070\u3044\u3044<\/li><li>\u4ee5\u964d\u3067\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u305d\u308c\u305e\u308c\u306e\u30c7\u30fc\u30bf\u304c\u9069\u3057\u3066\u3044\u308b\u304b\u3092\u8aac\u660e\u3059\u308b<\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u5b9f\u884c\u30ed\u30b0\">\u30c7\u30fc\u30bf\u3092\u898b\u306a\u304c\u3089\u8aac\u660e<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"\u307e\u305a\u306f\u898b\u3066\u307f\u308b\">1\u6b21\u5143<\/h4>\n\n\n\n<pre class=\"wp-block-luxe-blocks-syntaxhighlighter line-numbers language-python\"><code class=\"language-python\">import numpy as np\na = np.arange(2)\nprint(a)\nprint(a.ndim)\nprint(a.shape)<\/code><\/pre>\n\n\n\n<pre class=\"result\" style=\"text-align:left;line-height:17px;font-family:Menlo,Consolas,monospace;font-size:14px;padding:30px 0px 10px 15px;margin-top:10px;padding-bottom:-30px!important;\">[0 1]\n1\n(2,)\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6b21\u5143\u6570\u306f1\u6b21\u5143<\/li><li>(2, )<ul><li>1\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u304c2<\/li><li>2\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u306f0\uff08\u306a\u3057\uff09<\/li><\/ul><\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"\u884c\u5217\u306e\u3088\u3046\u306b\u8868\u793a\">2\u6b21\u5143\uff08\u884c\u5217\uff09<\/h4>\n\n\n\n<pre class=\"wp-block-luxe-blocks-syntaxhighlighter line-numbers language-python\"><code class=\"language-python\">import numpy as np\nb = np.arange(2).reshape(1,2)\nprint(b)\nprint(b.ndim)\nprint(b.shape)<\/code><\/pre>\n\n\n\n<pre class=\"result\" style=\"text-align:left;line-height:17px;font-family:Menlo,Consolas,monospace;font-size:14px;padding:30px 0px 10px 15px;margin-top:10px;padding-bottom:-30px!important;\">[[0 1]]\n2\n(1, 2)\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6b21\u5143\u6570\u306f2\u6b21\u5143<\/li><li>(1,2)<ul><li>1\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u304c1<\/li><li>2\u6b21\u5143\u76ee\u306e\u8981\u7d20\u6570\u306f2<\/li><\/ul><\/li><li>\u3053\u3053\u307e\u3067\u3067\u4e21\u8005\u306e\u9055\u3044\u304c\u4f55\u3068\u306a\u304f\u5206\u304b\u3063\u305f<\/li><li>\u4ee5\u964d\u3067\u305d\u308c\u305e\u308c\u306e\u3088\u3044\u3068\u3053\u308d\u3084\u6c17\u3092\u4ed8\u3051\u305f\u3044\u3068\u3053\u308d\u3092\u8aac\u660e<\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u3069\u3046\u3057\u3066-2-\u306a\u306e\u304b\">(2, )\u8868\u8a18\u3082\u3042\u308a\u3060\u306a\u3068\u601d\u3048\u308b<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>1\u6b21\u5143\u30012\u6b21\u5143\u30013\u6b21\u5143\u3001\u2026\u3068\u4e26\u3079\u3066\u307f\u308b<br>(2, ) \u2026\u2026 1\u6b21\u5143\uff08\u4e2d\u306e\u6570\u5b57\u306f1\u3064\uff09<br>(3,2) \u2026\u2026 2\u6b21\u5143\uff08\u4e2d\u306e\u6570\u5b57\u306f2\u3064\uff09<br>(2,1,3) \u2026\u2026 3\u6b21\u5143\uff08\u4e2d\u306e\u6570\u5b57\u306f3\u3064\uff09<br>(4,1,2,2) \u2026\u2026 4\u6b21\u5143\uff08\u4e2d\u306e\u6570\u5b57\u306f4\u3064\uff09<\/li><li>\u3053\u3053\u30671\u6b21\u5143\u306e(2, )\u3092(1,2)\u306b\u5165\u308c\u66ff\u3048\u308b\u3068\u3001\u9055\u548c\u611f\u304c\u3042\u308a\u307e\u3059<ul><li>(2)\u306e\u3088\u3046\u306a\u8868\u8a18\u306b\u3057\u306a\u3044\u3053\u3068\u3067ndarray\u3060\u3068\u3059\u3050\u306b\u308f\u304b\u308a\u307e\u3059<\/li><\/ul><ul><li>(2, )\u306e\u8868\u8a18\u3082\u3042\u308a\u3060\u306a\u3068\u601d\u3048\u307e\u3057\u305f\uff1f<\/li><\/ul><\/li><li>\u8003\u3048\u65b9<ul><li>\u4e0a\u8a18\u3067\u3082\u89e6\u308c\u305f\u3088\u3046\u306b(2, )\u3067\u3082(1,2)\u3067\u3082\u4e2d\u306e\u30c7\u30fc\u30bf\u306f\u540c\u3058<\/li><li>\u4ee5\u964d\u3067\u3069\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u308b\u304b\u3092\u8aac\u660e<\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u4f8b-\u884c\u5217\u3067\u51e6\u7406\u3092\u4f5c\u3063\u3066\u3044\u308b\u306a\u3089\">\u9069\u3057\u3066\u3044\u308b\u30d1\u30bf\u30fc\u30f3\u3092\u63a2\u308b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u4f8b-\u884c\u5217\u3067\u51e6\u7406\u3092\u4f5c\u3063\u3066\u3044\u308b\u306a\u3089\">(1,2)\u304c\u3088\u3044\u5834\u5408<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u30c7\u30fc\u30bf\u4f5c\u6210<\/h4>\n\n\n\n<pre class=\"wp-block-luxe-blocks-syntaxhighlighter line-numbers language-python\"><code class=\"language-python\">import numpy as np\na = np.array([1,2])\nb = np.array([[1,2]])\nc = np.array([[1,2], [3,4]])\nprint(f'[a]shape:{a.shape} ndim:{a.ndim}')\nprint(f'[b]shape:{b.shape} ndim:{b.ndim}')\nprint(f'[c]shape:{c.shape} ndim:{c.ndim}')<\/code><\/pre>\n\n\n\n<pre class=\"result\" style=\"text-align:left;line-height:17px;font-family:Menlo,Consolas,monospace;font-size:14px;padding:30px 0px 10px 15px;margin-top:10px;padding-bottom:-30px!important;\">[a]shape:(2,) ndim:1\n[b]shape:(1, 2) ndim:2\n[c]shape:(2, 2) ndim:2\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>a<ul><li>1\u6b21\u5143<\/li><li>\u30c7\u30fc\u30bf\u306f1,2\u306e2\u3064<\/li><\/ul><\/li><li>b<ul><li>2\u6b21\u5143<\/li><li>\u30c7\u30fc\u30bf\u306f1,2\u306e2\u3064<\/li><\/ul><\/li><li>c<ul><li>\u666e\u901a\u306e\u884c\u5217<\/li><li>2\u6b21\u5143<\/li><li>\u30c7\u30fc\u30bf\u306f1,2,3,4\u306e4\u3064<\/li><\/ul><\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u540c\u3058\u3088\u3046\u306b\u53d6\u308a\u51fa\u3057\u3066\u307f\u308b\u3068<\/h4>\n\n\n\n<pre class=\"wp-block-luxe-blocks-syntaxhighlighter line-numbers language-python\"><code class=\"language-python\">print(a[0])\nprint(a[0].shape)\nprint(b[0])\nprint(b[0].shape)\nprint(c[0])\nprint(c[0].shape)<\/code><\/pre>\n\n\n\n<pre class=\"result\" style=\"text-align:left;line-height:17px;font-family:Menlo,Consolas,monospace;font-size:14px;padding:30px 0px 10px 15px;margin-top:10px;padding-bottom:-30px!important;\">1\n()\n[1 2]\n(2,)\n[1 2]\n(2,)\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>a[0]<ul><li>1<\/li><li>\u30b9\u30ab\u30e9\u30fc<\/li><\/ul><\/li><li>b[0]<ul><li>1\u30682<\/li><li>1\u6b21\u5143ndarray\uff08NumPy\u914d\u5217\uff09<\/li><\/ul><\/li><li>c[0]<ul><li>1\u30682<\/li><li>1\u6b21\u5143ndarray<\/li><\/ul><\/li><li>a\u3068b\u3092\u6bd4\u8f03\u3059\u308b<ul><li>\u540c\u3058\u3088\u3046\u306b\u53d6\u308a\u51fa\u3057\u3066\u3044\u308b\u304c\u53d6\u5f97\u3067\u304d\u308b\u30c7\u30fc\u30bf\u304c\u7570\u306a\u308b<\/li><li>c\u306e\u53d6\u308a\u51fa\u3057\u7d50\u679c\u3092\u898b\u308b\u3068\u3001\u884c\u5217\u3068\u3057\u3066\u51e6\u7406\u3092\u4f5c\u3063\u3066\u3044\u308b\u5834\u5408\u306fa\u3088\u308ab\u306e\u65b9\u304c\u6271\u3044\u3084\u3059\u305d\u3046\u3067\u3059<\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u4f8b-\u6b21\u5143\u3067\u51e6\u7406\u3092\u4f5c\u3063\u3066\u3044\u308b\u306a\u3089\">(2, )\u304c\u3088\u3044\u5834\u5408<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u30c7\u30fc\u30bf\u4f5c\u6210<\/h4>\n\n\n\n<pre class=\"wp-block-luxe-blocks-syntaxhighlighter line-numbers language-python\"><code class=\"language-python\">a = np.arange(6).reshape(3,2)\nb = np.arange(2)\nc = np.arange(2).reshape(1,2)\nprint(a)\nprint(a.shape)\nprint(b)\nprint(b.shape)\nprint(c)\nprint(c.shape)<\/code><\/pre>\n\n\n\n<pre class=\"result\" style=\"text-align:left;line-height:17px;font-family:Menlo,Consolas,monospace;font-size:14px;padding:30px 0px 10px 15px;margin-top:10px;padding-bottom:-30px!important;\">[[0 1]\n [2 3]\n [4 5]]\n(3, 2)\n[0 1]\n(2,)\n[[0 1]]\n(1, 2)\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>a<ul><li>\u5f62\u72b6(3,2)\u306endarray\uff08NumPy\u914d\u5217\uff09\u3092\u4f5c\u6210<\/li><\/ul><\/li><li>b<ul><li>\u5f62\u72b6(2, )\u306endarray\u3092\u4f5c\u6210<\/li><\/ul><\/li><li>c<ul><li>\u5f62\u72b6(1,2)\u306endarray\u3092\u4f5c\u6210<\/li><\/ul><\/li><li>a\u306b\u5bfe\u3059\u308bb,c\u306edot\u7a4d\u3092\u8a08\u7b97\u3059\u308b<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">np.dot(a,b)<\/h4>\n\n\n\n<pre class=\"wp-block-luxe-blocks-syntaxhighlighter line-numbers language-python\"><code class=\"language-python\">rtn = np.dot(a,b)\nprint(rtn)\nprint(rtn.shape)<\/code><\/pre>\n\n\n\n<pre class=\"result\" style=\"text-align:left;line-height:17px;font-family:Menlo,Consolas,monospace;font-size:14px;padding:30px 0px 10px 15px;margin-top:10px;padding-bottom:-30px!important;\">[1 3 5]\n(3,)\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>(3,2)\u3068(2, )\u306edot\u7a4d\u8a08\u7b97<\/li><li>(3, )<ul><li>dot\u7a4d\u8a08\u7b97\u306e\u6cd5\u5247\u306e\u901a\u308a\u9593\u306e2\u304c\u306a\u304f\u306a\u3063\u305f\u5f62\u72b6\u306b\u306a\u3063\u3066\u3044\u308b<\/li><li>\u4f8b\u3048\u3070\u3001(3,2)\u3068(2,4)\u306e\u8a08\u7b97\u306a\u3089(3,4)\u306b\u306a\u308b\u306e\u3068\u540c\u69d8\u306b\u6271\u3048\u308b<\/li><\/ul><\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">np.dot(a,c)<\/h4>\n\n\n\n<pre class=\"wp-block-luxe-blocks-syntaxhighlighter line-numbers language-python\"><code class=\"language-python\">rtn = np.dot(a,c)\nprint(rtn)\nprint(rtn.shape)<\/code><\/pre>\n\n\n\n<pre class=\"result\" style=\"text-align:left;line-height:17px;font-family:Menlo,Consolas,monospace;font-size:14px;padding:30px 0px 10px 15px;margin-top:10px;padding-bottom:-30px!important;\">ValueError: shapes (3,2) and (1,2) not aligned: 2 (dim 1) != 1 (dim 0)\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>(3,2)\u3068(1,2)\u306edot\u7a4d\u8a08\u7b97<\/li><li>dot\u7a4d\u306e\u8a08\u7b97\u306e\u30eb\u30fc\u30eb\u306b\u6cbf\u3063\u3066\u3044\u306a\u3044\u305f\u3081\u8a08\u7b97\u3067\u304d\u306a\u3044<ul><li>\u8a08\u7b97\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001(3,2)\u3068(2,1)\u306b\u3059\u308c\u3070\u8a08\u7b97\u3067\u304d\u308b<\/li><li>\u305d\u306e\u5834\u5408\u3001\u8a08\u7b97\u7d50\u679c\u306f(3,1)\u3067\u3044\u3044\uff1f(1,3)\u306b\u9006\u8ee2\u3055\u305b\u308b\u3079\u304d\uff1f<\/li><\/ul><\/li><li>\u3053\u306e\u3053\u3068\u304b\u3089\u300c(2, )\u300d\u306e\u3088\u3046\u306a\u8868\u8a18\u3082\u7d20\u76f4\u306b\u53d7\u3051\u5165\u308c\u305f\u65b9\u304c\u3088\u3044\u3053\u3068\u304c\u5206\u304b\u308b<ul><li>\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3067\u306f(2, )\u306e\u65b9\u304c\u4e00\u822c\u7684\u3067\u3001(1,2)\u306e\u65b9\u304c\u73cd\u3057\u3044\u3067\u3059<\/li><\/ul><\/li><li>\u53c2\u8003<ul><li>np.dot\u306e\u30eb\u30fc\u30eb<\/li><li>\n<a class=\"movelink\" href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/numpy\/on-machine-learning\/#toc_id_3\">NumPy:\u3010\u6a5f\u68b0\u5b66\u7fd2\u3011\u3067\u4f7f\u3046\u884c\u5217\u8a08\u7b97<\/a>\n<\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3092\u77e5\u3063\u3066\u304a\u304f<ul><li>(2, )\u306e\u65b9\u304c(1,2)\u3088\u308a\u4e00\u822c\u7684<\/li><li>\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f<\/li><\/ul><\/li><li>\u3082\u3057(1,2)\u306e\u3088\u3046\u306b\u5909\u66f4\u3057\u3066\u3044\u308b\u30b3\u30fc\u30c9\u304c\u3042\u3063\u305f\u306a\u3089<ul><li>\u4f55\u304b\u7406\u7531\u304c\u3042\u308b\u3068\u8003\u3048\u308b<\/li><\/ul><ul><li>\u30ed\u30b8\u30c3\u30af\u7406\u89e3\u3084\u30d0\u30b0\u3092\u898b\u3064\u3051\u308b\u304d\u3063\u304b\u3051\u306b\u306a\u308b<\/li><li>\u601d\u308f\u306c\u3068\u3053\u308d\u3067\u6642\u9593\u3092\u53d6\u3089\u308c\u308b\u3053\u3068\u3082\u6e1b\u308b<\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u88dc\u8db3\">\u88dc\u8db3<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>pandas\u3082\u540c\u3058\u3088\u3046\u306a\u8003\u3048\u65b9\u304c\u3042\u308a\u307e\u3059<\/li><li>pandas\u3067\u306fSeries\u3068DataFrame\u3068\u8a00\u3063\u305f\u5225\u306e\u547c\u3073\u65b9\u306b\u306a\u308a\u307e\u3059<ul><li>\n<a class=\"movelink\" href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/pandas\/foundation\/#toc_id_2\">pandas:\u3010\u57fa\u790e\u3011\u6700\u521d\u306b\u77e5\u3063\u3066\u304a\u304d\u305f\u3044\u3053\u3068<\/a>\n<\/li><\/ul><\/li><\/ul>\n\n\n\n<!--\u76ee\u6b21\u3078\u3001\u30da\u30fc\u30b8\u306e\u5148\u982d\u3078-->\n<div id=\"backcontainer\"><a id=\"linkmokuji\" href=\"javascript:backContainer();\">\u76ee\u6b21\u3078\uff1e\uff1e<\/a>\u3000<a id=\"linktop\" href=\"#\">\u5148\u982d\u3078\uff1e\uff1e<\/a><\/div>\n\n\n<p><!--\u518d\u5229\u7528\u30d6\u30ed\u30c3\u30af\uff08numpy-footer\uff09--><br \/>\n\n<div class=\"back-link\"><div class=\"wp-block-columns\">\n<div class=\"wp-block-column contents-link-line\"><p><a href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/ai-top\/ai-summary\/\">AI\u307e\u3068\u3081<\/a><\/p><\/div>\n<div class=\"wp-block-column contents-link-line\"><p><a href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/ai-top\/docker-wsl\/\">DOCKER\/WSL<\/a><\/p><\/div>\n<div class=\"wp-block-column contents-link-line\"><p><a href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/ai-top\/development\/\">AI\u958b\u767a<\/a><\/p><\/div>\n<\/div><div class=\"wp-block-columns\">\n<div class=\"wp-block-column contents-link-line nowon\"><p><a href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/ai-top\/library\/\">\u30e9\u30a4\u30d6\u30e9\u30ea<\/a><\/p><\/div>\n<div class=\"wp-block-column contents-link-line\"><p><a href=\"https:\/\/broaden-your-horizons.com\/ai-ss\/ai-top\/pooping\/\">\u3046\u3093\u3061\u304f<\/a><\/p><\/div>\n<div class=\"wp-block-column contents-link-line blank\"><p><\/p><\/div>\n<!--<div class=\"wp-block-column contents-link-line blank\"><p><a href=\"#\"><\/a><\/p><\/div>-->\n<\/div><\/div>\n<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30b5\u30de\u30ea (2, ) np.shape\u3067ndarray\uff08NumPy\u914d\u5217\uff09\u306e\u5f62\u72b6\u53d6\u5f97\u3057\u305f\u7d50\u679c ndarray\u304c1\u6b21\u5143\u306e\u5834\u5408\u306e\u8868\u8a18 \u7279\u5fb4 2\u6b21\u5143\u76ee\u304c\u30d6\u30e9\u30f3\u30af\uff08\u7a7a\u767d\uff09\u306b\u306a\u3063\u3066\u3044\u308b (2)\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u3044\u3044\u3068\u611f\u3058\u308b (2, )\u3068\u306a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":282,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[47,54,48],"class_list":["post-4896","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-numpy","tag-numpy","tag-54","tag-48"],"_links":{"self":[{"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/posts\/4896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/comments?post=4896"}],"version-history":[{"count":40,"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/posts\/4896\/revisions"}],"predecessor-version":[{"id":7100,"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/posts\/4896\/revisions\/7100"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/media\/282"}],"wp:attachment":[{"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/media?parent=4896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/categories?post=4896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/broaden-your-horizons.com\/ai-ss\/wp-json\/wp\/v2\/tags?post=4896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}