{"id":6713,"date":"2026-01-13T10:04:28","date_gmt":"2026-01-13T01:04:28","guid":{"rendered":"https:\/\/techfun.cc\/?p=6713"},"modified":"2026-01-13T10:04:28","modified_gmt":"2026-01-13T01:04:28","slug":"introduction-to-text-embedding","status":"publish","type":"post","link":"https:\/\/techfun.cc\/generative-ai\/introduction-to-text-embedding.html","title":{"rendered":"\u985e\u4f3c\u691c\u7d22\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u300c\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u300d\u306e\u3057\u304f\u307f"},"content":{"rendered":"<h3 id=\"section-1\" class=\"Heading Title Title--m\">\u306f\u3058\u3081\u306b<\/h3>\n<p>\u30c7\u30fc\u30bf\u691c\u7d22\u3068\u805e\u304f\u3068\u3001\u591a\u304f\u306e\u5834\u5408\u306f\u300c\u5b8c\u5168\u4e00\u81f4\u691c\u7d22\u300d\u3084\u300c\u90e8\u5206\u4e00\u81f4\u691c\u7d22\u300d\u3092\u601d\u3044\u6d6e\u304b\u3079\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<br \/>\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u6587\u5b57\u5217\u3068\u3001\u691c\u7d22\u30af\u30a8\u30ea\u304c\u4e00\u81f4\u3059\u308c\u3070\u30d2\u30c3\u30c8\u3059\u308b\u3001\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3067\u3001\u5b9f\u52d9\u3067\u306f\u6b21\u306e\u3088\u3046\u306a\u5834\u9762\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u8868\u73fe\u304c\u5c11\u3057\u9055\u3046\u3060\u3051\u3067\u691c\u7d22\u306b\u30d2\u30c3\u30c8\u3057\u306a\u3044<\/li>\n<li class=\"Base-list__child\">\u610f\u5473\u306f\u8fd1\u3044\u306e\u306b\u3001\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u4e00\u81f4\u3057\u306a\u3044<\/li>\n<li class=\"Base-list__child\">\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u304c\u66d6\u6627\u3067\u3001\u9069\u5207\u306a\u7d50\u679c\u3092\u8fd4\u305b\u306a\u3044<\/li>\n<\/ul>\n<p>\u3053\u3046\u3057\u305f\u8ab2\u984c\u3092\u89e3\u6c7a\u3059\u308b\u624b\u6cd5\u306e\u4e00\u3064\u304c<strong>\u985e\u4f3c\u691c\u7d22<\/strong>\u3067\u3059\u3002<br \/>\n\u305d\u3057\u3066\u3001\u305d\u306e\u4e2d\u6838\u3068\u306a\u308b\u6280\u8853\u304c<strong>\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\uff08\u57cb\u3081\u8fbc\u307f\u8868\u73fe\uff09<\/strong>\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001\u300c\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u3068\u306f\u4f55\u304b\u300d\u3001\u300c\u306a\u305c\u985e\u4f3c\u691c\u7d22\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u306e\u304b\u300d\u3092\u3001\u30c7\u30e2\u3092\u4ea4\u3048\u306a\u304c\u3089\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h3 id=\"section-2\" class=\"Heading Title Title--m\">\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\uff08\u57cb\u3081\u8fbc\u307f\u8868\u73fe\uff09\u3068\u306f<\/h3>\n<p>\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u3068\u306f\u3001<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u5358\u8a9e<\/li>\n<li class=\"Base-list__child\">\u6587\u7ae0<\/li>\n<li class=\"Base-list__child\">\u753b\u50cf<\/li>\n<\/ul>\n<p>\u3068\u3044\u3063\u305f\u30c7\u30fc\u30bf\u3092\u3001\u305d\u306e<strong>\u610f\u5473\u3084\u7279\u5fb4\u3092\u4fdd\u3063\u305f\u307e\u307e<\/strong>\u30d9\u30af\u30c8\u30eb\uff08\u6570\u5024\u306e\u914d\u5217\uff09\u306b\u5909\u63db\u3059\u308b\u6280\u8853\u3067\u3059\u3002<br \/>\n\u3053\u306e\u5909\u63db\u3092\u884c\u3046\u3053\u3068\u3067\u3001<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u81ea\u7136\u8a00\u8a9e\u3084\u753b\u50cf\u3092\u6570\u5024\u3068\u3057\u3066\u6271\u3048\u308b<\/li>\n<li class=\"Base-list__child\">\u6570\u5024\u8a08\u7b97\u306b\u3088\u3063\u3066\u300c\u4f3c\u3066\u3044\u308b\u300d\u300c\u8fd1\u3044\u300d\u3092\u5224\u65ad\u3067\u304d\u308b<\/li>\n<\/ul>\n<p>\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u3064\u307e\u308a\u3001\u4eba\u9593\u304c\u611f\u899a\u7684\u306b\u884c\u3063\u3066\u3044\u308b\u300c\u3053\u308c\u3068\u3042\u308c\u306f\u4f3c\u3066\u3044\u308b\u300d\u3068\u3044\u3046\u5224\u65ad\u3092\u3001\u6570\u5b66\u7684\u306b\u6271\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3060\u3068\u8003\u3048\u308b\u4e8b\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/01\/what-is-embedding.png\" alt=\"\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u306e\u4ed5\u7d44\u307f\" class=\"content_img\" \/><\/p>\n<div class=\"Image-caption\">Nano Banana Pro\u3067\u751f\u6210<\/div>\n<h3 id=\"section-3\" class=\"Heading Title Title--m\">\u30c7\u30e2\uff1a\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u3092\u53ef\u8996\u5316\u3057\u3066\u307f\u308b<\/h3>\n<p>\u3067\u306f\u3001\u5b9f\u969b\u306b\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u3092\u7528\u3044\u3066\u3001\u3069\u306e\u3088\u3046\u306b\u985e\u4f3c\u691c\u7d22\u3092\u884c\u3046\u306e\u304b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br \/>\n\u3053\u3053\u3067\u306f\u308f\u304b\u308a\u3084\u3059\u3055\u91cd\u8996\u3067\u3001\u5358\u8a9e\u306e\u985e\u4f3c\u691c\u7d22\u3092\u884c\u3063\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u306f\u30013072\u6b21\u5143\u30011536\u6b21\u5143\u3001768\u6b21\u5143\u3068\u3044\u3063\u305f\u9ad8\u6b21\u5143\u30d9\u30af\u30c8\u30eb\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<br \/>\n\u305f\u3060\u3057\u3001\u9ad8\u6b21\u5143\u306e\u307e\u307e\u3067\u306f\u56f3\u793a\u304c\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u672c\u8a18\u4e8b\u3067\u306f\u53ef\u8996\u5316\u3092\u76ee\u7684\u3068\u3057\u3066\u30011536\u6b21\u5143\u3067\u751f\u6210\u3055\u308c\u308b\u30d9\u30af\u30c8\u30eb\u3092\u4e3b\u6210\u5206\u5206\u6790\uff08PCA\uff09\u3068\u3044\u3046\u6280\u8853\u3092\u7528\u3044\u3066\u30012\u6b21\u5143\u307e\u3067\u5727\u7e2e\u3057\u307e\u3059\u3002<br \/>\n\u5b9f\u904b\u7528\u3067\u306f\u7cbe\u5ea6\u306e\u89b3\u70b9\u304b\u3089\u9ad8\u6b21\u5143\u306e\u307e\u307e\u5229\u7528\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306e\u30c7\u30e2\u3067\u306f\u3001\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u30e2\u30c7\u30eb\u306bOpenAI\u306e<span class=\"Post-inline\">text-embedding-3-small<\/span>\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u203b OpenAI\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6a5f\u80fd\u3067\u76f4\u63a52\u6b21\u5143\u306e\u30d9\u30af\u30c8\u30eb\u3092\u751f\u6210\u3059\u308b\u6a5f\u80fd\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u9ad8\u6b21\u5143\u751f\u6210\u2192\u4e3b\u6210\u5206\u5206\u6790\u3092\u3057\u305f\u307b\u3046\u304c\u7cbe\u5ea6\u304c\u826f\u304f\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001\u4eca\u56de\u306f\u4e3b\u6210\u5206\u5206\u6790\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4 id=\"section-3-1\" class=\"Heading Title Title--s\">\u30c7\u30e2\u7528\u306e\u5358\u8a9e\uff085\u8a9e \u00d7 4\u30af\u30e9\u30b9\u30bf\uff09<\/h4>\n<p>\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u306e\u6027\u8cea\u304c\u5206\u304b\u308a\u3084\u3059\u304f\u306a\u308b\u3088\u3046\u3001\u30b8\u30e3\u30f3\u30eb\u304c\u7570\u306a\u308b2\u3064\u306e\u30ab\u30c6\u30b4\u30ea\u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/p>\n<h5 id=\"section-3-1-1\" class=\"Heading Title Title--xs\">\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30fb\u958b\u767a\u7cfb<\/h5>\n<pre class=\"Copy\"><code>\r\nPython\r\nJavaScript\r\n\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\r\n\u5b9f\u88c5\r\n\u30c7\u30d0\u30c3\u30b0\r\n<\/code><\/pre>\n<h5 id=\"section-3-1-2\" class=\"Heading Title Title--xs\">AI\u30fb\u30c7\u30fc\u30bf\u7cfb<\/h5>\n<pre class=\"Copy\"><code>\r\nAI\r\n\u6a5f\u68b0\u5b66\u7fd2\r\n\u6df1\u5c64\u5b66\u7fd2\r\n\u30c7\u30fc\u30bf\u5206\u6790\r\n\u4eba\u5de5\u77e5\u80fd\r\n<\/code><\/pre>\n<h5 id=\"section-3-1-3\" class=\"Heading Title Title--xs\">\u98df\u3079\u7269\u30fb\u6599\u7406\u7cfb<\/h5>\n<pre class=\"Copy\"><code>\r\n\u5bff\u53f8\r\n\u30e9\u30fc\u30e1\u30f3\r\n\u30ab\u30ec\u30fc\r\n\u30cf\u30f3\u30d0\u30fc\u30b0\r\n\u30d1\u30b9\u30bf\r\n<\/code><\/pre>\n<h5 id=\"section-3-1-4\" class=\"Heading Title Title--xs\">\u4e57\u308a\u7269\u30fb\u79fb\u52d5\u7cfb<\/h5>\n<pre class=\"Copy\"><code>\r\n\u81ea\u52d5\u8eca\r\n\u96fb\u8eca\r\n\u30d0\u30b9\r\n\u98db\u884c\u6a5f\r\n\u81ea\u8ee2\u8eca\r\n<\/code><\/pre>\n<p>\u3053\u306e\u69cb\u6210\u306b\u3088\u308a\u3001\u300c\u610f\u5473\u304c\u8fd1\u3044\u5358\u8a9e\u306f\u307e\u3068\u307e\u308a\u3001\u95a2\u4fc2\u306e\u306a\u3044\u5358\u8a9e\u306f\u96e2\u308c\u308b\u300d\u3068\u3044\u3046\u6319\u52d5\u3092\u8996\u899a\u7684\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<h4 id=\"section-3-2\" class=\"Heading Title Title--s\">2\u6b21\u5143\u30d9\u30af\u30c8\u30eb\u3092\u751f\u6210\u3059\u308b\u30b3\u30fc\u30c9\u4f8b<\/h4>\n<p>\u4ee5\u4e0b\u306f\u3001OpenAI API\u30672\u6b21\u5143\u306e\u30d9\u30af\u30c8\u30eb\u3092\u751f\u6210\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<div class=\"Pre-title\">embedding_words_with_pca.py<\/div>\n<pre class=\"Copy\"><code>\r\nimport numpy as np\r\nfrom dotenv import load_dotenv\r\nfrom openai import OpenAI\r\n\r\nload_dotenv()\r\n\r\nclient = OpenAI()\r\n\r\nwords = [\r\n    &quot;Python&quot;, &quot;JavaScript&quot;, &quot;\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0&quot;, &quot;\u5b9f\u88c5&quot;, &quot;\u30c7\u30d0\u30c3\u30b0&quot;,\r\n    &quot;AI&quot;, &quot;\u6a5f\u68b0\u5b66\u7fd2&quot;, &quot;\u6df1\u5c64\u5b66\u7fd2&quot;, &quot;\u30c7\u30fc\u30bf\u5206\u6790&quot;, &quot;\u4eba\u5de5\u77e5\u80fd&quot;,\r\n    &quot;\u5bff\u53f8&quot;, &quot;\u30e9\u30fc\u30e1\u30f3&quot;, &quot;\u30ab\u30ec\u30fc&quot;, &quot;\u30cf\u30f3\u30d0\u30fc\u30b0&quot;, &quot;\u30d1\u30b9\u30bf&quot;,\r\n    &quot;\u81ea\u52d5\u8eca&quot;, &quot;\u96fb\u8eca&quot;, &quot;\u30d0\u30b9&quot;, &quot;\u98db\u884c\u6a5f&quot;, &quot;\u81ea\u8ee2\u8eca&quot;,\r\n]\r\n\r\n# \u30c7\u30d5\u30a9\u30eb\u30c8\u30671536\u6b21\u5143\u306e\u30d9\u30af\u30c8\u30eb\u304c\u751f\u6210\u3055\u308c\u308b\r\nresponse = client.embeddings.create(\r\n    model=&quot;text-embedding-3-small&quot;,\r\n    input=words,\r\n)\r\n\r\nvectors = np.array([d.embedding for d in response.data]) \r\n\r\n# \u4e3b\u6210\u5206\u5206\u6790\u3068\u3044\u3046\u6280\u8853\u3067\u30011536\u6b21\u5143\u30922\u6b21\u5143\u306b\u5727\u7e2e\uff08\u3053\u3053\u306e\u8aac\u660e\u306f\u7701\u7565\uff09\r\nvectors_2d = pca_to_2d(vectors)\r\n\r\nfor word, vector in zip(words, vectors_2d):\r\n    print(f&quot;{word}: {vector}&quot;)\r\n<\/code><\/pre>\n<p>\u5b9f\u884c\u3059\u308b\u3068\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30d9\u30af\u30c8\u30eb\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<div class=\"Pre-title\">\u5b9f\u884c\u7d50\u679c<\/div>\n<pre class=\"Copy\"><code>\r\nPython: [-0.15126746  0.35255755]\r\nJavaScript: [-0.05191365  0.37248566]\r\n\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0: [-0.12384383  0.2774263 ]\r\n\u5b9f\u88c5: [-0.11643543  0.0802914 ]\r\n\u30c7\u30d0\u30c3\u30b0: [ 0.11005437 -0.018176  ]\r\nAI: [-0.16327941  0.26665992]\r\n\u6a5f\u68b0\u5b66\u7fd2: [-0.46703785  0.09946574]\r\n\u6df1\u5c64\u5b66\u7fd2: [-0.32870221  0.25412075]\r\n\u30c7\u30fc\u30bf\u5206\u6790: [-0.15491634  0.31756677]\r\n\u4eba\u5de5\u77e5\u80fd: [-0.29019093  0.23530355]\r\n\u5bff\u53f8: [ 0.38669948 -0.05278358]\r\n\u30e9\u30fc\u30e1\u30f3: [ 0.52679815 -0.00760298]\r\n\u30ab\u30ec\u30fc: [0.51998144 0.0546167 ]\r\n\u30cf\u30f3\u30d0\u30fc\u30b0: [0.44496972 0.03363166]\r\n\u30d1\u30b9\u30bf: [0.55319311 0.10029806]\r\n\u81ea\u52d5\u8eca: [-0.23238473 -0.49313654]\r\n\u96fb\u8eca: [-0.14845397 -0.57404895]\r\n\u30d0\u30b9: [ 0.05772    -0.41452748]\r\n\u98db\u884c\u6a5f: [-0.22416269 -0.37806025]\r\n\u81ea\u8ee2\u8eca: [-0.14682776 -0.50608828]\r\n<\/code><\/pre>\n<h4 id=\"section-3-3\" class=\"Heading Title Title--s\">\u53ef\u8996\u5316\u7d50\u679c\u306e\u30a4\u30e1\u30fc\u30b8<\/h4>\n<p>\u5f97\u3089\u308c\u305f\u30d9\u30af\u30c8\u30eb\u3092\u30d7\u30ed\u30c3\u30c8\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u914d\u7f6e\u306b\u306a\u308a\u307e\u3059\u3002  <\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/01\/embedding_words_plot_with_pca.png\" alt=\"\u5358\u8a9e\u306e\u914d\u7f6e\" class=\"content_img\" \/><\/p>\n<div class=\"Image-caption\">\u5358\u8a9e\u3092\u30d9\u30af\u30c8\u30eb\u5316\u3057\u305f\u3068\u304d\u306e\u914d\u7f6e\u3002\u5404\u30b8\u30e3\u30f3\u30eb\u3067\u8272\u5206\u3051\u3057\u3066\u3044\u308b\u3002<\/div>\n<p>\u3053\u3053\u3067\u91cd\u8981\u306a\u306e\u306f\u6b21\u306e\u70b9\u3067\u3059\u3002<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u540c\u30b8\u30e3\u30f3\u30eb\u306e\u5358\u8a9e\u540c\u58eb\u304c\u8fd1\u304f\u96c6\u307e\u308a\u3001\u30af\u30e9\u30b9\u30bf\u30fc\uff08\u584a\uff09\u3092\u5f62\u6210\u3059\u308b<\/li>\n<li class=\"Base-list__child\">\u30af\u30e9\u30b9\u30bf\u30fc\u540c\u58eb\u306f\u3001\u3042\u308b\u7a0b\u5ea6\u306e\u8ddd\u96e2\u3092\u53d6\u3063\u3066\u914d\u7f6e\u3055\u308c\u308b<\/li>\n<li class=\"Base-list__child\">\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30fb\u958b\u767a\u7cfb\u3068AI\u30fb\u30c7\u30fc\u30bf\u7cfb\u306f\u610f\u5473\u304c\u8fd1\u3044\u305f\u3081\u3001\u6bd4\u8f03\u7684\u8fd1\u304f\u306b\u914d\u7f6e\u3055\u308c\u308b<\/li>\n<\/ul>\n<p>\u5358\u8a9e\u306e\u8868\u8a18\u304c\u4f3c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u306f\u306a\u304f\u3001<strong>\u610f\u5473\u7684\u306a\u8fd1\u3055\u304c\u53cd\u6620\u3055\u308c\u3066\u3044\u308b<\/strong>\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<h4 id=\"section-3-4\" class=\"Heading Title Title--s\">\u610f\u5473\u304c\u8fd1\u3044\u5358\u8a9e\u3092\u53d6\u5f97\u3059\u308b\uff08\u985e\u4f3c\u691c\u7d22\u306e\u30c7\u30e2\uff09<\/h4>\n<p>\u300c\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u300d\u3068\u3044\u3046\u5358\u8a9e\u3092\u4e0a\u8a18\u3068\u540c\u3058\u3088\u3046\u306b\u30d9\u30af\u30c8\u30eb\u5316\u3059\u308b\u3068\u3001<\/p>\n<pre class=\"Copy\"><code>\r\nquery_vector = np.array([-0.21509223417701273, 0.12073096051365606])\r\n<\/code><\/pre>\n<p>\u3068\u3044\u3046\u5024\u304c\u5f97\u3089\u308c\u307e\u3057\u305f\u3002<br \/>\n\u3053\u308c\u3092\u4f7f\u3063\u3066\u3001\u985e\u4f3c\u691c\u7d22\u3092\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u985e\u4f3c\u5ea6\u3068\u3044\u3046\u6307\u6a19\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<br \/>\n\u8a73\u7d30\u306a\u8aac\u660e\u306f\u7701\u7565\u3057\u307e\u3059\u304c\u3001\u30d9\u30af\u30c8\u30eb\u540c\u58eb\u306e\u985e\u4f3c\u5ea6\u3092\u6e2c\u308b\u3068\u304d\u306b\u3088\u304f\u4f7f\u308f\u308c\u308b\u6307\u6a19\u3067\u3059\u3002<br \/>\n\u5b9f\u88c5\u4f8b\u306f\u3053\u3061\u3089\u3067\u3059\u3002<\/p>\n<div class=\"Pre-title\">similarity_search.py<\/div>\n<pre class=\"Copy\"><code>\r\nimport numpy as np\r\n\r\nwords = [\r\n    # \u7701\u7565\r\n]\r\n\r\nvectors_2d = np.array(\r\n    [\r\n        # \u7701\u7565\r\n    ]\r\n)\r\n\r\nquery_vector = np.array([-0.21509223417701273, 0.12073096051365606])\r\n\r\n\r\ndef cosine_similarity(a: np.ndarray, b: np.ndarray) -&gt; float:\r\n    return np.dot(a, b) \/ (np.linalg.norm(a) * np.linalg.norm(b))\r\n\r\n\r\nsimilarities = []\r\n\r\nfor word, vector in zip(words, vectors_2d):\r\n    score = cosine_similarity(query_vector, vector)\r\n    similarities.append((word, score))\r\n\r\n# \u985e\u4f3c\u5ea6\u306e\u9ad8\u3044\u9806\u306b\u30bd\u30fc\u30c8\r\nsimilarities.sort(key=lambda x: x[1], reverse=True)\r\n\r\n# top3 \u3092\u8868\u793a\r\ntop3 = similarities[:3]\r\n\r\nprint(&quot;=== \u30af\u30a8\u30ea\u306b\u985e\u4f3c\u3057\u305f\u5358\u8a9e\u30c8\u30c3\u30d73 ===&quot;)\r\nfor word, score in top3:\r\n    print(f&quot;{word}: {score:.4f}&quot;)\r\n<\/code><\/pre>\n<div class=\"Pre-title\">\u5b9f\u884c\u7d50\u679c<\/div>\n<pre class=\"Copy\"><code>\r\n=== \u30af\u30a8\u30ea\u306b\u985e\u4f3c\u3057\u305f\u5358\u8a9e\u30c8\u30c3\u30d73 ===\r\n\u4eba\u5de5\u77e5\u80fd: 0.9977\r\n\u6df1\u5c64\u5b66\u7fd2: 0.9958\r\n\u5b9f\u88c5: 0.9911\r\n<\/code><\/pre>\n<p>\u30d7\u30ed\u30c3\u30c8\u3059\u308b\u3068\u3001\u3053\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u305f\u3057\u304b\u306b\u3001\u8fd1\u3044\u5358\u8a9e\u3092\u53d6\u5f97\u3067\u304d\u3066\u305d\u3046\u3067\u3059\u306d\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/01\/embedding_target_word_plot_with_cpa.png\" alt=\"\u30af\u30a8\u30ea\u3092\u8ffd\u52a0\u3057\u305f\u5358\u8a9e\u306e\u914d\u7f6e\" class=\"content_img\" \/><\/p>\n<div class=\"Image-caption\">\u30af\u30a8\u30ea\u3092\u8ffd\u52a0\u3057\u305f\u3001\u5358\u8a9e\u3092\u30d9\u30af\u30c8\u30eb\u5316\u3057\u305f\u3068\u304d\u306e\u914d\u7f6e\u3002\u5404\u30b8\u30e3\u30f3\u30eb\u3067\u8272\u5206\u3051\u3057\u3066\u3044\u308b\u3002\u2605\u30de\u30fc\u30af\u306f\u4eca\u56de\u306e\u30af\u30a8\u30ea\u3002<\/div>\n<h3 id=\"section-4\" class=\"Heading Title Title--m\">\u5b9f\u969b\u306b\u306f\u3069\u306e\u3088\u3046\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b<\/h3>\n<p>\u4eca\u56de\u306e\u30c7\u30e2\u3067\u306f\u5358\u8a9e\u3092\u6271\u3044\u307e\u3057\u305f\u304c\u3001\u6587\u7ae0\u3067\u3082\u540c\u69d8\u306b\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<br \/>\n\u305d\u306e\u305f\u3081\u3001\u6d3b\u7528\u7bc4\u56f2\u306f\u975e\u5e38\u306b\u5e83\u304f\u3001\u691c\u7d22\u30fb\u63a8\u85a6\u30fb\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u30fb\u30de\u30c3\u30c1\u30f3\u30b0\u306a\u3069\u3001\u591a\u304f\u306e\u5b9f\u30b7\u30b9\u30c6\u30e0\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u3053\u3067\u3001\u5f0a\u793e\u304c\u958b\u767a\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u306b\u3069\u306e\u3088\u3046\u306b\u7d44\u307f\u8fbc\u3093\u3067\u3044\u308b\u304b\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h4 id=\"section-4-1\" class=\"Heading Title Title--s\">\u793e\u5185\u30dd\u30fc\u30bf\u30eb\u5411\u3051AI\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8<\/h4>\n<p>\u5f0a\u793e\u304c\u958b\u767a\u3057\u305f\u793e\u5185\u30dd\u30fc\u30bf\u30eb\u5411\u3051AI\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u3067\u306f\u3001RAG\uff08\u691c\u7d22\u62e1\u5f35\u751f\u6210\uff09\u3092\u7528\u3044\u308b\u969b\u306b\u3001<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">Slack\u4e0a\u3067\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u554f\u3044\u5408\u308f\u305b\u6587\u3092\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0<\/li>\n<li class=\"Base-list__child\">\u793e\u5185\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u30d9\u30af\u30c8\u30eb\u691c\u7d22<\/li>\n<li class=\"Base-list__child\">\u8cea\u554f\u5185\u5bb9\u306b\u95a2\u9023\u6027\u306e\u9ad8\u3044\u8cc7\u6599\u3092\u53d6\u5f97<\/li>\n<\/ul>\n<p>\u3068\u3044\u3063\u305f\u7528\u9014\u3067\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u8a73\u7d30\u306f\u4ee5\u4e0b\u306e\u4e8b\u4f8b\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<br \/>\n<a href=\"https:\/\/www.techfun.co.jp\/solutions\/case_25\/\" class=\"Ext\">RAG\uff08\u691c\u7d22\u62e1\u5f35\u751f\u6210\uff09\u3068\u751f\u6210AI\u3092\u6d3b\u7528\u3057\u305fAI\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u306e\u958b\u767a<\/a><\/p>\n<h4 id=\"section-4-2\" class=\"Heading Title Title--s\">SES\u6848\u4ef6\u30de\u30c3\u30c1\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0<\/h4>\n<p>\u5f0a\u793e\u306eSES\u6848\u4ef6\u30de\u30c3\u30c1\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u4eba\u6750\u306e\u30b9\u30ad\u30eb\u60c5\u5831<\/li>\n<li class=\"Base-list__child\">\u6848\u4ef6\u306e\u8981\u4ef6\u60c5\u5831<\/li>\n<\/ul>\n<p>\u3092\u4f3c\u305f\u3088\u3046\u306a\u6587\u7ae0\u69cb\u9020\u306b\u5909\u63db\u3057\u305f\u3046\u3048\u3067\u305d\u308c\u305e\u308c\u3092\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u5316\u3057\u3001\u610f\u5473\u30d9\u30fc\u30b9\u3067\u30de\u30c3\u30c1\u30f3\u30b0\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u5b8c\u5168\u4e00\u81f4\u3057\u306a\u304f\u3066\u3082\u3001\u5185\u5bb9\u7684\u306b\u9069\u5408\u5ea6\u306e\u9ad8\u3044\u7d44\u307f\u5408\u308f\u305b\u3092\u898b\u3064\u3051\u3089\u308c\u308b\u70b9\u304c\u7279\u5fb4\u3067\u3059\u3002<br \/>\n\u8a73\u7d30\u306f\u3053\u3061\u3089\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<br \/>\n<a href=\"https:\/\/www.techfun.co.jp\/solutions\/case_28\/\" class=\"Ext\">\u751f\u6210AI\u306b\u3088\u308b\u69cb\u9020\u5316\u51fa\u529b\u3068\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u3067\u3001SES\u6848\u4ef6\u63a2\u7d22\u3092\u52b9\u7387\u5316<\/a><\/p>\n<h3 id=\"section-5\" class=\"Heading Title Title--m\">\u4e3b\u306a\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u30e2\u30c7\u30eb\u306e\u7d39\u4ecb<\/h3>\n<p>\u3053\u3053\u3067\u3001OpenAI\u3068Google\u304c\u30ea\u30ea\u30fc\u30b9\u3057\u3066\u3044\u308b\u3001\u4ee3\u8868\u7684\u306a\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u30e2\u30c7\u30eb\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h4 id=\"section-5-1\" class=\"Heading Title Title--s\">OpenAI\u306e\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u30e2\u30c7\u30eb<\/h4>\n<p>\u4e0b\u8a182\u3064\u304c\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\"><span class=\"Post-inline\">text-embedding-3-small<\/span><\/li>\n<li class=\"Base-list__child\"><span class=\"Post-inline\">text-embedding-3-large<\/span><\/li>\n<\/ul>\n<p>\u4e3b\u306a\u7279\u5fb4\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u30c6\u30ad\u30b9\u30c8\u751f\u6210\u30e2\u30c7\u30eb\u3068\u6bd4\u3079\u3066\u30b3\u30b9\u30c8\u304c\u4f4e\u3044<\/li>\n<li class=\"Base-list__child\"><span class=\"Post-inline\">large<\/span> \u306f\u9ad8\u7cbe\u5ea6\u3001<span class=\"Post-inline\">small<\/span> \u306f\u30b3\u30b9\u30c8\u91cd\u8996<\/li>\n<\/ul>\n<p>\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<br \/>\n<a href=\"https:\/\/platform.openai.com\/docs\/guides\/embeddings\" class=\"Ext\">OpenAI Platform &gt; Docs &gt; Vector embeddings<\/a><\/p>\n<h4 id=\"section-5-2\" class=\"Heading Title Title--s\">Google\u306e\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u30e2\u30c7\u30eb<\/h4>\n<p>\u4e0b\u8a18\u304c\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\"><span class=\"Post-inline\">gemini-embedding-001<\/span><\/li>\n<\/ul>\n<p>\u4e3b\u306a\u7279\u5fb4\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u6b21\u5143\u6570\u3092\u5c0f\u3055\u304f\u3057\u3066\u3082\u9ad8\u3044\u30b9\u30b3\u30a2\u3092\u7dad\u6301\u3057\u3084\u3059\u3044<\/li>\n<li class=\"Base-list__child\">\u5165\u529b\u30c8\u30fc\u30af\u30f3\u306e\u4e0a\u9650\u306f2,048\u30c8\u30fc\u30af\u30f3\u307e\u3067\u3068\u3001\u3084\u3084\u5c0f\u3055\u3081\u3002<\/li>\n<\/ul>\n<p>\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<br \/>\n<a href=\"https:\/\/ai.google.dev\/gemini-api\/docs\/embeddings?hl=ja\" class=\"Ext\">Gemini API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8 &gt; \u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0<\/a><\/p>\n<h3 id=\"section-6\" class=\"Heading Title Title--m\">\u307e\u3068\u3081<\/h3>\n<p>\u5b8c\u5168\u4e00\u81f4\u691c\u7d22\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u5206\u304b\u308a\u3084\u3059\u3044\u4e00\u65b9\u3001\u610f\u5473\u306e\u63fa\u308c\u3084\u8868\u73fe\u306e\u9055\u3044\u306b\u306f\u5f31\u3044\u3068\u3044\u3046\u8ab2\u984c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001<\/p>\n<ul class=\"Base-list\">\n<li class=\"Base-list__child\">\u610f\u5473\u30d9\u30fc\u30b9\u306e\u985e\u4f3c\u691c\u7d22\u304c\u53ef\u80fd\u306b\u306a\u308b<\/li>\n<li class=\"Base-list__child\">\u66d6\u6627\u306a\u5165\u529b\u306b\u3082\u67d4\u8edf\u306b\u5bfe\u5fdc\u3067\u304d\u308b<\/li>\n<li class=\"Base-list__child\">\u691c\u7d22\u3084\u30de\u30c3\u30c1\u30f3\u30b0\u306e\u7cbe\u5ea6\u3092\u5927\u304d\u304f\u5411\u4e0a\u3055\u305b\u3089\u308c\u308b<\/li>\n<\/ul>\n<p>\u3068\u3044\u3063\u305f\u30e1\u30ea\u30c3\u30c8\u3092\u5f97\u3089\u308c\u307e\u3059\u3002<br \/>\n\u300c\u985e\u4f3c\u691c\u7d22\u3092\u5b9f\u73fe\u3057\u305f\u3044\u300d\u300c\u691c\u7d22\u7cbe\u5ea6\u3092\u4e0a\u3052\u305f\u3044\u300d\u3068\u8003\u3048\u305f\u3068\u304d\u3001\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u306f\u6700\u521d\u306b\u691c\u8a0e\u3059\u3079\u304d\u6280\u8853\u306e\u4e00\u3064\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3 id=\"section-7\" class=\"Heading Title Title--m\">\u751f\u6210AI\u6d3b\u7528\u652f\u63f4\u30b5\u30fc\u30d3\u30b9\u306e\u3054\u7d39\u4ecb<\/h3>\n<p>Tech Fun\u3067\u306f\u3001\u304a\u5ba2\u69d8\u306e\u30d5\u30a7\u30fc\u30ba\u306b\u5408\u308f\u305b\u3001\u751f\u6210AI\u6d3b\u7528\u306b\u5411\u3051\u305f\u652f\u63f4\u30923\u3064\u306e\u30d1\u30c3\u30af\u3067\u3054\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol class=\"Base-list\">\n<li><a href=\"https:\/\/www.techfun.co.jp\/services\/ai\/diagnosis\/\" class=\"Ext\">\u7121\u6599\u8a3a\u65ad\u30d1\u30c3\u30af<\/a>\uff1a\u696d\u52d9\u30fb\u30d7\u30ed\u30bb\u30b9\u306e\u73fe\u72b6\u3092\u7121\u6599\u3067\u8a3a\u65ad\u3057\u3001\u751f\u6210AI\u6d3b\u7528\u306e\u53ef\u80fd\u6027\u3092\u30ec\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/www.techfun.co.jp\/services\/ai\/poc\/\" class=\"Ext\">\u691c\u8a3c\uff08PoC\uff09\u30d1\u30c3\u30af<\/a>\uff1a\u8a3a\u65ad\u3067\u6709\u52b9\u6027\u304c\u78ba\u8a8d\u3055\u308c\u305f\u696d\u52d9\u3092\u5bfe\u8c61\u306b\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u69cb\u7bc9\u3092\u652f\u63f4\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/www.techfun.co.jp\/services\/ai\/consulting\/\" class=\"Ext\">\u30b3\u30f3\u30b5\u30eb\u30c6\u30a3\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9<\/a>\uff1a\u751f\u6210AI\u5c0e\u5165\u6226\u7565\u306e\u7b56\u5b9a\u304b\u3089\u904b\u7528\u4f53\u5236\u69cb\u7bc9\u307e\u3067\u3092\u5305\u62ec\u7684\u306b\u652f\u63f4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u751f\u6210AI\u306b\u9650\u3089\u305a\u3001Web\u30fb\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u3084\u30a4\u30f3\u30d5\u30e9\u8a2d\u8a08\u306a\u3069\u3001\u6280\u8853\u9818\u57df\u3092\u554f\u308f\u305a\u3054\u76f8\u8ac7\u3092\u627f\u3063\u3066\u3044\u307e\u3059\u3002\u300c\u4f55\u304b\u3089\u59cb\u3081\u308c\u3070\u826f\u3044\u304b\u5206\u304b\u3089\u306a\u3044\u300d\u3068\u3044\u3046\u6bb5\u968e\u3067\u3082\u69cb\u3044\u307e\u305b\u3093\u306e\u3067\u3001\u305c\u3072\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b \u30c7\u30fc\u30bf\u691c\u7d22\u3068\u805e\u304f\u3068\u3001\u591a\u304f\u306e\u5834\u5408\u306f\u300c\u5b8c\u5168\u4e00\u81f4\u691c\u7d22\u300d\u3084\u300c\u90e8\u5206\u4e00\u81f4\u691c\u7d22\u300d\u3092\u601d\u3044\u6d6e\u304b\u3079\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u6587\u5b57\u5217\u3068\u3001\u691c\u7d22\u30af\u30a8\u30ea\u304c\u4e00\u81f4\u3059\u308c\u3070\u30d2\u30c3\u30c8\u3059\u308b\u3001\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002 \u4e00\u65b9\u3067\u3001\u5b9f\u52d9\u3067\u2026<\/p>\n","protected":false},"author":7,"featured_media":6717,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[91],"class_list":["post-6713","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-generative-ai"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/posts\/6713","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/comments?post=6713"}],"version-history":[{"count":1,"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/posts\/6713\/revisions"}],"predecessor-version":[{"id":6714,"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/posts\/6713\/revisions\/6714"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/media\/6717"}],"wp:attachment":[{"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/media?parent=6713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techfun.cc\/wp-json\/wp\/v2\/categories?post=6713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}