{"id":479277,"date":"2023-08-09T10:32:55","date_gmt":"2023-08-09T10:32:55","guid":{"rendered":""},"modified":"2023-09-05T11:18:31","modified_gmt":"2023-09-05T11:18:31","slug":"term-frequency-inverse-document-frequency-tf-idf","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/kr\/wiki\/term-frequency-inverse-document-frequency-tf-idf\/","title":{"rendered":"\uc6a9\uc5b4 \ube48\ub3c4-\uc5ed\ubb38\uc11c \ube48\ub3c4(TF-IDF)"},"content":{"rendered":"<p>TF-IDF(\uc6a9\uc5b4 \ube48\ub3c4-\uc5ed\ubb38\uc11c \ube48\ub3c4)\ub294 \ubb38\uc11c \ubaa8\uc74c \ub0b4\uc5d0\uc11c \uc6a9\uc5b4\uc758 \uc911\uc694\uc131\uc744 \ud3c9\uac00\ud558\uae30 \uc704\ud574 \uc815\ubcf4 \uac80\uc0c9 \ubc0f \uc790\uc5f0\uc5b4 \ucc98\ub9ac\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \uae30\uc220\uc785\ub2c8\ub2e4. \ud2b9\uc815 \ubb38\uc11c\uc5d0\uc11c\uc758 \ube48\ub3c4\ub97c \uace0\ub824\ud558\uace0 \uc804\uccb4 \ub9d0\ubb49\uce58\uc5d0\uc11c\uc758 \ube48\ub3c4\uc640 \ube44\uad50\ud558\uc5ec \ub2e8\uc5b4\uc758 \uc911\uc694\uc131\uc744 \uce21\uc815\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4. TF-IDF\ub294 \uac80\uc0c9 \uc5d4\uc9c4, \ud14d\uc2a4\ud2b8 \ubd84\ub958, \ubb38\uc11c \ud074\ub7ec\uc2a4\ud130\ub9c1, \ucf58\ud150\uce20 \ucd94\ucc9c \uc2dc\uc2a4\ud15c \ub4f1 \ub2e4\uc591\ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<h2>TF-IDF(Term Frequency-Inverse Document Frequency)\uc758 \uc720\ub798\uc640 \ucd5c\ucd08 \uc5b8\uae09\uc758 \uc5ed\uc0ac.<\/h2>\n<p>TF-IDF\uc758 \uac1c\ub150\uc740 1970\ub144\ub300 \ucd08\ubc18\uc73c\ub85c \uac70\uc2ac\ub7ec \uc62c\ub77c\uac11\ub2c8\ub2e4. &quot;\ube48\ub3c4\ub77c\ub294 \uc6a9\uc5b4&quot;\ub77c\ub294 \uc6a9\uc5b4\ub294 Gerard Salton\uc774 \uc815\ubcf4 \uac80\uc0c9\uc5d0 \ub300\ud55c \uc120\uad6c\uc801\uc778 \uc5f0\uad6c\uc5d0\uc11c \ucc98\uc74c \uc18c\uac1c\ud588\uc2b5\ub2c8\ub2e4. 1972\ub144 Salton, A. Wong, CS Yang\uc740 &quot;\uc790\ub3d9 \uc0c9\uc778\uc744 \uc704\ud55c \ubca1\ud130 \uacf5\uac04 \ubaa8\ub378&quot;\uc774\ub77c\ub294 \uc5f0\uad6c \ub17c\ubb38\uc744 \ubc1c\ud45c\ud558\uc5ec VSM(\ubca1\ud130 \uacf5\uac04 \ubaa8\ub378)\uacfc \uc6a9\uc5b4 \ube48\ub3c4\ub97c \ud544\uc218 \uad6c\uc131 \uc694\uc18c\ub85c \ud558\ub294 \uae30\ucd08\ub97c \ub9c8\ub828\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<p>1970\ub144\ub300 \uc911\ubc18, \uc601\uad6d\uc758 \ucef4\ud4e8\ud130 \uacfc\ud559\uc790\uc778 Karen Sp\u00e4rck Jones\ub294 \ud1b5\uacc4\uc801 \uc790\uc5f0\uc5b4 \ucc98\ub9ac\uc5d0 \ub300\ud55c \uc5f0\uad6c\uc758 \uc77c\ud658\uc73c\ub85c &quot;\uc5ed\ubb38\uc11c \ube48\ub3c4&quot; \uac1c\ub150\uc744 \uc81c\uc548\ud588\uc2b5\ub2c8\ub2e4. Jones\ub294 1972\ub144 &quot;\uc6a9\uc5b4 \ud2b9\uc815\uc131\uc758 \ud1b5\uacc4\uc801 \ud574\uc11d\uacfc \uac80\uc0c9\uc5d0\uc11c\uc758 \uc801\uc6a9&quot;\uc774\ub77c\ub294 \uc81c\ubaa9\uc758 \ub17c\ubb38\uc5d0\uc11c \uc804\uccb4 \ubb38\uc11c \ubaa8\uc74c\uc5d0\uc11c \uc6a9\uc5b4\uc758 \ud76c\uadc0\uc131\uc744 \uace0\ub824\ud558\ub294 \uac83\uc758 \uc911\uc694\uc131\uc5d0 \ub300\ud574 \ub17c\uc758\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc6a9\uc5b4 \ube48\ub3c4\uc640 \uc5ed \ubb38\uc11c \ube48\ub3c4\uc758 \uc870\ud569\uc740 1980\ub144\ub300 \ud6c4\ubc18\uc5d0 SMART \uc815\ubcf4 \uac80\uc0c9 \uc2dc\uc2a4\ud15c\uc5d0 \ub300\ud55c \uc791\uc5c5\uc744 \ud1b5\ud574 Salton\uacfc Buckley\uac00 \ub300\uc911\ud654\ud55c \ud604\uc7ac \ub110\ub9ac \uc54c\ub824\uc9c4 TF-IDF \uac00\uc911\uce58 \uccb4\uacc4\uc758 \uac1c\ubc1c\ub85c \uc774\uc5b4\uc84c\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>TF-IDF(\uc6a9\uc5b4 \ube48\ub3c4-\ubb38\uc11c \ube48\ub3c4 \uc5ed\uc218)\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \uc815\ubcf4\uc785\ub2c8\ub2e4. TF-IDF(\uc6a9\uc5b4 \ube48\ub3c4-\uc5ed \ubb38\uc11c \ube48\ub3c4) \uc8fc\uc81c\ub97c \ud655\uc7a5\ud569\ub2c8\ub2e4.<\/h2>\n<p>TF-IDF\ub294 \ud2b9\uc815 \ubb38\uc11c \ub0b4\uc5d0\uc11c\uc758 \ube48\ub3c4\uc5d0 \ube44\ub840\ud558\uc5ec \uc6a9\uc5b4\uc758 \uc911\uc694\ub3c4\uac00 \uc99d\uac00\ud558\ub294 \ub3d9\uc2dc\uc5d0 \ucf54\ud37c\uc2a4\uc758 \ubaa8\ub4e0 \ubb38\uc11c\uc5d0\uc11c \ubc1c\uc0dd \ube48\ub3c4\uac00 \uac10\uc18c\ud55c\ub2e4\ub294 \uc544\uc774\ub514\uc5b4\ub97c \ubc14\ud0d5\uc73c\ub85c \uc791\ub3d9\ud569\ub2c8\ub2e4. \uc774 \uac1c\ub150\uc740 \uc77c\ubd80 \ub2e8\uc5b4\uac00 \uc790\uc8fc \ub4f1\uc7a5\ud558\uc9c0\ub9cc \ubb38\ub9e5\uc0c1 \uc758\ubbf8\ub97c \uac70\uc758 \uc81c\uacf5\ud558\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 \uad00\ub828\uc131 \uc21c\uc704\ub97c \uc704\ud574 \uc6a9\uc5b4 \ube48\ub3c4\ub9cc \uc0ac\uc6a9\ud558\ub294 \uc81c\ud55c \uc0ac\ud56d\uc744 \ud574\uacb0\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/p>\n<p>\ubb38\uc11c\uc758 \uc6a9\uc5b4\uc5d0 \ub300\ud55c TF-IDF \uc810\uc218\ub294 \uc6a9\uc5b4 \ube48\ub3c4(TF)\uc5d0 \uc5ed\ubb38\uc11c \ube48\ub3c4(IDF)\ub97c \uacf1\ud558\uc5ec \uacc4\uc0b0\ub429\ub2c8\ub2e4. \uc6a9\uc5b4 \ube48\ub3c4\ub294 \ubb38\uc11c\uc5d0\uc11c \ud574\ub2f9 \uc6a9\uc5b4\uac00 \ub098\ud0c0\ub098\ub294 \ud69f\uc218\uc774\uace0, \uc5ed \ubb38\uc11c \ube48\ub3c4\ub294 \uc804\uccb4 \ubb38\uc11c \uc218\ub97c \ud574\ub2f9 \uc6a9\uc5b4\uac00 \ud3ec\ud568\ub41c \ubb38\uc11c \uc218\ub85c \ub098\ub208 \ub85c\uadf8\ub85c \uacc4\uc0b0\ub429\ub2c8\ub2e4.<\/p>\n<p>\ucf54\ud37c\uc2a4 \ub0b4\uc758 \ubb38\uc11c &quot;d&quot;\uc5d0 \uc788\ub294 \uc6a9\uc5b4 &quot;t&quot;\uc758 TF-IDF \uc810\uc218\ub97c \uacc4\uc0b0\ud558\ub294 \uacf5\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<pre><div class=\"bg-black rounded-md mb-4\"><div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans justify-between rounded-t-md\"><span>scss<\/span><button class=\"flex ml-auto gap-2\"><svg stroke=\"currentColor\" fill=\"none\" stroke-width=\"2\" viewbox=\"0 0 24 24\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"h-4 w-4\" height=\"1em\" width=\"1em\" ><path d=\"M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2\"><\/path><rect x=\"8\" y=\"2\" width=\"8\" height=\"4\" rx=\"1\" ry=\"1\"><\/rect><\/svg>\ucf54\ub4dc \ubcf5\uc0ac<\/button><\/div><div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-scss\" data-no-translation=\"\"><span class=\"hljs-built_in\">TF-IDF<\/span>(t, d) = <span class=\"hljs-built_in\">TF<\/span>(t, d) * <span class=\"hljs-built_in\">IDF<\/span>(t)\n<\/code><\/div><\/div><\/pre>\n<p>\uc5b4\ub514:<\/p>\n<ul>\n<li><code data-no-translation=\"\">TF(t, d)<\/code> \uc740 \ubb38\uc11c &quot;d&quot;\uc5d0\uc11c \uc6a9\uc5b4 &quot;t&quot;\uc758 \uc6a9\uc5b4 \ube48\ub3c4\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/li>\n<li><code data-no-translation=\"\">IDF(t)<\/code> \uc804\uccb4 \ub9d0\ubb49\uce58\uc5d0\uc11c \uc6a9\uc5b4 &quot;t&quot;\uc758 \uc5ed \ubb38\uc11c \ube48\ub3c4\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p>\uacb0\uacfc TF-IDF \uc810\uc218\ub294 \uc804\uccb4 \uceec\ub809\uc158\uacfc \uad00\ub828\ud558\uc5ec \ud2b9\uc815 \ubb38\uc11c\uc5d0 \ub300\ud55c \uc6a9\uc5b4\uc758 \uc911\uc694\uc131\uc744 \uc815\ub7c9\ud654\ud569\ub2c8\ub2e4. TF-IDF \uc810\uc218\uac00 \ub192\ub2e4\ub294 \uac83\uc740 \ud574\ub2f9 \uc6a9\uc5b4\uac00 \ubb38\uc11c\uc5d0\uc11c \uc790\uc8fc \ub4f1\uc7a5\ud558\uace0 \ub2e4\ub978 \ubb38\uc11c\uc5d0\uc11c\ub294 \ub4dc\ubb3c\ub2e4\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uba70, \uc774\ub294 \ud574\ub2f9 \ud2b9\uc815 \ubb38\uc11c\uc758 \ub9e5\ub77d\uc5d0\uc11c \ud574\ub2f9 \uc6a9\uc5b4\uc758 \uc911\uc694\uc131\uc744 \uc554\uc2dc\ud569\ub2c8\ub2e4.<\/p>\n<h2>TF-IDF(\uc6a9\uc5b4 \ube48\ub3c4-\uc5ed \ubb38\uc11c \ube48\ub3c4)\uc758 \ub0b4\ubd80 \uad6c\uc870. \uc6a9\uc5b4 \ube48\ub3c4-\uc5ed\ubb38\uc11c \ube48\ub3c4(TF-IDF)\uac00 \uc791\ub3d9\ud558\ub294 \ubc29\uc2dd.<\/h2>\n<p>TF-IDF\ub294 2\ub2e8\uacc4 \ud504\ub85c\uc138\uc2a4\ub85c \uc0dd\uac01\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\n<p><strong>\uc6a9\uc5b4 \ube48\ub3c4(TF)<\/strong>: \uccab \ubc88\uc9f8 \ub2e8\uacc4\uc5d0\uc11c\ub294 \ubb38\uc11c\uc758 \uac01 \uc6a9\uc5b4\uc5d0 \ub300\ud55c \uc6a9\uc5b4 \ube48\ub3c4(TF)\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4. \uc774\ub294 \ubb38\uc11c \ub0b4\uc5d0\uc11c \uac01 \uc6a9\uc5b4\uc758 \ubc1c\uc0dd \ud69f\uc218\ub97c \uacc4\uc0b0\ud558\uc5ec \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. TF\uac00 \ub192\uc744\uc218\ub85d \uc6a9\uc5b4\uac00 \ubb38\uc11c\uc5d0\uc11c \ub354 \uc790\uc8fc \ub098\ud0c0\ub098\uace0 \ud574\ub2f9 \ud2b9\uc815 \ubb38\uc11c\uc758 \ub9e5\ub77d\uc5d0\uc11c \uc911\uc694\ud560 \uac00\ub2a5\uc131\uc774 \uc788\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\uc5ed\ubb38\uc11c \ube48\ub3c4(IDF)<\/strong>: \ub450 \ubc88\uc9f8 \ub2e8\uacc4\uc5d0\uc11c\ub294 \ub9d0\ubb49\uce58\uc758 \uac01 \uc6a9\uc5b4\uc5d0 \ub300\ud55c \uc5ed \ubb38\uc11c \ube48\ub3c4(IDF)\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4. \uc774\ub294 \ucf54\ud37c\uc2a4\uc758 \ucd1d \ubb38\uc11c \uc218\ub97c \ud574\ub2f9 \uc6a9\uc5b4\uac00 \ud3ec\ud568\ub41c \ubb38\uc11c \uc218\ub85c \ub098\ub204\uace0 \uadf8 \uacb0\uacfc\uc5d0 \ub85c\uadf8\ub97c \ucde8\ud568\uc73c\ub85c\uc368 \uc218\ud589\ub429\ub2c8\ub2e4. IDF \uac12\uc740 \ub354 \uc801\uc740 \uc218\uc758 \ubb38\uc11c\uc5d0 \ub098\ud0c0\ub098\ub294 \uc6a9\uc5b4\uc758 \uacbd\uc6b0 \ub354 \ub192\uc73c\uba70 \uc774\ub294 \uace0\uc720\uc131\uacfc \uc911\uc694\uc131\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n<p>TF \ubc0f IDF \uc810\uc218\uac00 \ubaa8\ub450 \uacc4\uc0b0\ub418\uba74 \uc55e\uc5d0\uc11c \uc5b8\uae09\ud55c \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \uacb0\ud569\ud558\uc5ec \ubb38\uc11c\uc758 \uac01 \uc6a9\uc5b4\uc5d0 \ub300\ud55c \ucd5c\uc885 TF-IDF \uc810\uc218\ub97c \uc5bb\uc2b5\ub2c8\ub2e4. \uc774 \uc810\uc218\ub294 \uc804\uccb4 \uc790\ub8cc\uc758 \ub9e5\ub77d\uc5d0\uc11c \ubb38\uc11c\uc5d0 \ub300\ud55c \uc6a9\uc5b4\uc758 \uad00\ub828\uc131\uc744 \ub098\ud0c0\ub0b4\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<p>TF-IDF\uac00 \ub110\ub9ac \uc0ac\uc6a9\ub418\uace0 \ud6a8\uacfc\uc801\uc774\uae34 \ud558\uc9c0\ub9cc \ud55c\uacc4\ub3c4 \uc788\ub2e4\ub294 \uc810\uc5d0 \uc720\uc758\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \ub2e8\uc5b4 \uc21c\uc11c, \uc758\ubbf8 \uccb4\uacc4 \ub610\ub294 \ub9e5\ub77d\uc744 \uace0\ub824\ud558\uc9c0 \uc54a\uc73c\uba70 \ub2e8\uc5b4 \uc784\ubca0\ub529\uc774\ub098 \ub525 \ub7ec\ub2dd \ubaa8\ub378\uacfc \uac19\uc740 \ub2e4\ub978 \uae30\uc220\uc774 \ub354 \uc801\uc808\ud560 \uc218 \uc788\ub294 \ud2b9\uc815 \uc804\ubb38 \uc601\uc5ed\uc5d0\uc11c\ub294 \ucd5c\uc801\uc73c\ub85c \uc218\ud589\ub418\uc9c0 \uc54a\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>TF-IDF(\uc6a9\uc5b4\ube48\ub3c4-\uc5ed\ubb38\uc11c\ube48\ub3c4)\uc758 \uc8fc\uc694 \ud2b9\uc9d5 \ubd84\uc11d.<\/h2>\n<p>TF-IDF\ub294 \ub2e4\uc591\ud55c \uc815\ubcf4 \uac80\uc0c9 \ubc0f \uc790\uc5f0\uc5b4 \ucc98\ub9ac \uc791\uc5c5\uc5d0\uc11c \uc720\uc6a9\ud55c \ub3c4\uad6c\uac00 \ub418\ub294 \uba87 \uac00\uc9c0 \uc8fc\uc694 \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\n<p><strong>\uc6a9\uc5b4 \uc911\uc694\uc131<\/strong>: TF-IDF\ub294 \ubb38\uc11c \ub0b4 \uc6a9\uc5b4\uc758 \uc911\uc694\uc131\uacfc \uc804\uccb4 \ub9d0\ubb49\uce58\uc640\uc758 \uad00\ub828\uc131\uc744 \ud6a8\uacfc\uc801\uc73c\ub85c \ud3ec\ucc29\ud569\ub2c8\ub2e4. \uc774\ub294 \ud544\uc218 \uc6a9\uc5b4\ub97c \uc77c\ubc18\uc801\uc778 \ubd88\uc6a9\uc5b4 \ub610\ub294 \uc758\ubbf8\ub860\uc801 \uac00\uce58\uac00 \uac70\uc758 \uc5c6\ub294 \uc790\uc8fc \ubc1c\uc0dd\ud558\ub294 \ub2e8\uc5b4\uc640 \uad6c\ubcc4\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ubb38\uc11c \uc21c\uc704<\/strong>: \uac80\uc0c9 \uc5d4\uc9c4 \ubc0f \ubb38\uc11c \uac80\uc0c9 \uc2dc\uc2a4\ud15c\uc5d0\uc11c TF-IDF\ub294 \uc8fc\uc5b4\uc9c4 \ucffc\ub9ac\uc640\uc758 \uad00\ub828\uc131\uc744 \uae30\uc900\uc73c\ub85c \ubb38\uc11c\uc758 \uc21c\uc704\ub97c \uc9c0\uc815\ud558\ub294 \ub370 \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ucffc\ub9ac \uc6a9\uc5b4\uc5d0 \ub300\ud55c TF-IDF \uc810\uc218\uac00 \ub192\uc740 \ubb38\uc11c\ub294 \uad00\ub828\uc131\uc774 \ub354 \ub192\uc740 \uac83\uc73c\ub85c \uac04\uc8fc\ub418\uc5b4 \uac80\uc0c9 \uacb0\uacfc\uc5d0\uc11c \ub354 \ub192\uc740 \uc21c\uc704\ub97c \ucc28\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud0a4\uc6cc\ub4dc \ucd94\ucd9c<\/strong>: TF-IDF\ub294 \ubb38\uc11c \ub0b4\uc5d0\uc11c \uac00\uc7a5 \uad00\ub828\uc131\uc774 \ub192\uace0 \uad6c\ubcc4\ub418\ub294 \uc6a9\uc5b4\ub97c \uc2dd\ubcc4\ud558\ub294 \ud0a4\uc6cc\ub4dc \ucd94\ucd9c\uc5d0 \ud65c\uc6a9\ub429\ub2c8\ub2e4. \uc774\ub807\uac8c \ucd94\ucd9c\ub41c \ud0a4\uc6cc\ub4dc\ub294 \ubb38\uc11c \uc694\uc57d, \uc8fc\uc81c \ubaa8\ub378\ub9c1, \ucf58\ud150\uce20 \ubd84\ub958\uc5d0 \uc720\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ucf58\ud150\uce20 \uae30\ubc18 \ud544\ud130\ub9c1<\/strong>: \ucd94\ucc9c \uc2dc\uc2a4\ud15c\uc5d0\uc11c TF-IDF\ub294 \ucf58\ud150\uce20 \uae30\ubc18 \ud544\ud130\ub9c1\uc5d0 \uc0ac\uc6a9\ub420 \uc218 \uc788\uc73c\uba70, \uc5ec\uae30\uc11c \ubb38\uc11c \uac04\uc758 \uc720\uc0ac\uc131\uc740 TF-IDF \ubca1\ud130\ub97c \uae30\ubc18\uc73c\ub85c \uacc4\uc0b0\ub429\ub2c8\ub2e4. \ube44\uc2b7\ud55c \ucde8\ud5a5\uc744 \uac00\uc9c4 \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc720\uc0ac\ud55c \ucf58\ud150\uce20\ub97c \ucd94\ucc9c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ucc28\uc6d0 \ucd95\uc18c<\/strong>: \ud14d\uc2a4\ud2b8 \ub370\uc774\ud130\uc758 \ucc28\uc6d0 \ucd95\uc18c\ub97c \uc704\ud574 TF-IDF\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. TF-IDF \uc810\uc218\uac00 \uac00\uc7a5 \ub192\uc740 \uc0c1\uc704 n\uac1c \uc6a9\uc5b4\ub97c \uc120\ud0dd\ud558\uba74 \ucd95\uc18c\ub418\uace0 \ub354 \ub9ce\uc740 \uc815\ubcf4\ub97c \uc81c\uacf5\ud558\ub294 \uae30\ub2a5 \uacf5\uac04\uc774 \uc0dd\uc131\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\uc5b8\uc5b4 \ub3c5\ub9bd\uc131<\/strong>: TF-IDF\ub294 \uc0c1\ub300\uc801\uc73c\ub85c \uc5b8\uc5b4 \ub3c5\ub9bd\uc801\uc774\uba70 \uc57d\uac04\uc758 \uc218\uc815\ub9cc\uc73c\ub85c \ub2e4\uc591\ud55c \uc5b8\uc5b4\uc5d0 \uc801\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ub2e4\uad6d\uc5b4 \ubb38\uc11c \uceec\ub809\uc158\uc5d0 \uc801\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n<p>\uc774\ub7ec\ud55c \uc7a5\uc810\uc5d0\ub3c4 \ubd88\uad6c\ud558\uace0 \ud2b9\ud788 \ubcf5\uc7a1\ud55c \uc5b8\uc5b4 \uc774\ud574 \uc791\uc5c5\uc5d0\uc11c \uac00\uc7a5 \uc815\ud655\ud558\uace0 \uad00\ub828\uc131 \uc788\ub294 \uacb0\uacfc\ub97c \uc5bb\uc73c\ub824\uba74 TF-IDF\ub97c \ub2e4\ub978 \uae30\uc220\uacfc \ud568\uaed8 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n<h2>TF-IDF(\uc6a9\uc5b4\ube48\ub3c4-\uc5ed\ubb38\uc11c\ube48\ub3c4)\uc758 \uc720\ud615\uc774 \ubb34\uc5c7\uc778\uc9c0 \uc791\uc131\ud558\uc138\uc694. \ud45c\uc640 \ubaa9\ub85d\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc791\uc131\ud558\uc138\uc694.<\/h2>\n<p>TF-IDF\ub294 \uc6a9\uc5b4 \ube48\ub3c4 \ubc0f \uc5ed \ubb38\uc11c \ube48\ub3c4 \uacc4\uc0b0\uc758 \ubcc0\ud615\uc744 \uae30\ubc18\uc73c\ub85c \ucd94\uac00\ub85c \uc0ac\uc6a9\uc790 \uc815\uc758\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. TF-IDF\uc758 \uba87 \uac00\uc9c0 \uc77c\ubc18\uc801\uc778 \uc720\ud615\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\n<p><strong>\uc6d0\uc2dc \uc6a9\uc5b4 \ube48\ub3c4(TF)<\/strong>: \ubb38\uc11c\uc5d0 \uc788\ub294 \uc6a9\uc5b4\uc758 \uc6d0\uc2dc \uac1c\uc218\ub97c \ub098\ud0c0\ub0b4\ub294 \uac00\uc7a5 \uac04\ub2e8\ud55c \ud615\ud0dc\uc758 TF\uc785\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ub85c\uadf8 \uc2a4\ucf00\uc77c\ub9c1\ub41c \uc6a9\uc5b4 \ube48\ub3c4<\/strong>: \uadf9\ub3c4\ub85c \ub192\uc740 \uc8fc\ud30c\uc218 \ud56d\uc758 \ud6a8\uacfc\ub97c \uc57d\ud654\uc2dc\ud0a4\uae30 \uc704\ud574 \ub85c\uadf8 \uc2a4\ucf00\uc77c\ub9c1\uc744 \uc801\uc6a9\ud558\ub294 TF\uc758 \ubcc0\ud615\uc785\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\uc774\uc911 \uc815\uaddc\ud654 TF<\/strong>: \uae34 \ubb38\uc11c\uc5d0 \ub300\ud55c \ud3b8\ud5a5\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \uc6a9\uc5b4 \ube48\ub3c4\ub97c \ubb38\uc11c\uc758 \ucd5c\ub300 \uc6a9\uc5b4 \ube48\ub3c4\ub85c \ub098\ub204\uc5b4 \uc815\uaddc\ud654\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud655\ub300\ub41c \uae30\uac04 \ube48\ub3c4<\/strong>: Double Normalization TF\uc640 \uc720\uc0ac\ud558\uc9c0\ub9cc \ud56d \ube48\ub3c4\ub97c \ucd5c\ub300 \ud56d \ube48\ub3c4\ub85c \ub354 \ub098\ub208 \ub2e4\uc74c 0.5\ub97c \ub354\ud558\uc5ec \uc601\ud56d \ube48\ub3c4 \ubb38\uc81c\ub97c \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ubd80\uc6b8 \uc6a9\uc5b4 \ube48\ub3c4<\/strong>: TF\uc758 \uc774\uc9c4 \ud45c\ud604\uc73c\ub85c, 1\uc740 \ubb38\uc11c\uc5d0 \uc6a9\uc5b4\uac00 \uc788\uc74c\uc744 \ub098\ud0c0\ub0b4\uace0 0\uc740 \ud574\ub2f9 \uc6a9\uc5b4\uac00 \uc5c6\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ubd80\ub4dc\ub7ec\uc6b4 IDF<\/strong>: \ubaa8\ub4e0 \ubb38\uc11c\uc5d0 \uc6a9\uc5b4\uac00 \ub098\ud0c0\ub0a0 \ub54c 0\uc73c\ub85c \ub098\ub204\ub294 \uac83\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 IDF \uacc4\uc0b0\uc5d0 \ud3c9\ud65c\ud654 \uc6a9\uc5b4\ub97c \ud3ec\ud568\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n<p>TF-IDF\uc758 \ub2e4\uc591\ud55c \ubcc0\ud615\uc740 \ub2e4\uc591\ud55c \uc2dc\ub098\ub9ac\uc624\uc5d0 \uc801\ud569\ud560 \uc218 \uc788\uc73c\uba70 \uc2e4\ubb34\uc790\ub294 \ud2b9\uc815 \uc0ac\uc6a9 \uc0ac\ub840\uc5d0 \uac00\uc7a5 \ud6a8\uacfc\uc801\uc778 \uc720\ud615\uc744 \uacb0\uc815\ud558\uae30 \uc704\ud574 \uc5ec\ub7ec \uc720\ud615\uc744 \uc2e4\ud5d8\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>TF-IDF(Term Frequency-Inverse Document Frequency) \uc0ac\uc6a9\ubc29\ubc95\uacfc \uc0ac\uc6a9\uc5d0 \ub530\ub978 \ubb38\uc81c\uc810 \ubc0f \ud574\uacb0\ubc29\uc548\uc785\ub2c8\ub2e4.<\/h2>\n<p>TF-IDF\ub294 \uc815\ubcf4 \uac80\uc0c9, \uc790\uc5f0\uc5b4 \ucc98\ub9ac, \ud14d\uc2a4\ud2b8 \ubd84\uc11d \ubd84\uc57c\uc5d0\uc11c \ub2e4\uc591\ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ucc3e\uc2b5\ub2c8\ub2e4. TF-IDF\ub97c \uc0ac\uc6a9\ud558\ub294 \uba87 \uac00\uc9c0 \uc77c\ubc18\uc801\uc778 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\n<p><strong>\ubb38\uc11c \uac80\uc0c9 \ubc0f \uc21c\uc704<\/strong>: TF-IDF\ub294 \uc0ac\uc6a9\uc790 \ucffc\ub9ac\uc640\uc758 \uad00\ub828\uc131\uc744 \uae30\uc900\uc73c\ub85c \ubb38\uc11c\uc758 \uc21c\uc704\ub97c \ub9e4\uae30\uae30 \uc704\ud574 \uac80\uc0c9 \uc5d4\uc9c4\uc5d0\uc11c \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4. TF-IDF \uc810\uc218\uac00 \ub192\uc744\uc218\ub85d \ub354 \ub098\uc740 \uc77c\uce58\ub97c \ub098\ud0c0\ub0b4\uba70 \uac80\uc0c9 \uacb0\uacfc\uac00 \ud5a5\uc0c1\ub429\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud14d\uc2a4\ud2b8 \ubd84\ub958 \ubc0f \ubd84\ub958<\/strong>: \uac10\uc815 \ubd84\uc11d\uc774\ub098 \uc8fc\uc81c \ubaa8\ub378\ub9c1\uacfc \uac19\uc740 \ud14d\uc2a4\ud2b8 \ubd84\ub958 \uc791\uc5c5\uc5d0\uc11c TF-IDF\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud2b9\uc9d5\uc744 \ucd94\ucd9c\ud558\uace0 \ubb38\uc11c\ub97c \uc218\uce58\ub85c \ud45c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud0a4\uc6cc\ub4dc \ucd94\ucd9c<\/strong>: TF-IDF\ub294 \ubb38\uc11c\uc5d0\uc11c \uc911\uc694\ud55c \ud0a4\uc6cc\ub4dc\ub97c \uc2dd\ubcc4\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub418\uba70 \uc774\ub294 \uc694\uc57d, \ud0dc\uadf8 \uc9c0\uc815 \ubc0f \ubd84\ub958\uc5d0 \uc720\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\uc815\ubcf4 \uac80\uc0c9<\/strong>: TF-IDF\ub294 \ub9ce\uc740 \uc815\ubcf4 \uac80\uc0c9 \uc2dc\uc2a4\ud15c\uc758 \uae30\ubcf8 \uad6c\uc131 \uc694\uc18c\ub85c, \ub300\uaddc\ubaa8 \uceec\ub809\uc158\uc5d0\uc11c \ubb38\uc11c\uc758 \uc815\ud655\ud558\uace0 \uad00\ub828\uc131 \ub192\uc740 \uac80\uc0c9\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ucd94\ucc9c \uc2dc\uc2a4\ud15c<\/strong>: \ucf58\ud150\uce20 \uae30\ubc18 \ucd94\ucc9c\uc790\ub294 TF-IDF\ub97c \ud65c\uc6a9\ud558\uc5ec \ubb38\uc11c \uac04\uc758 \uc720\uc0ac\uc131\uc744 \ud310\ub2e8\ud558\uace0 \uad00\ub828 \ucf58\ud150\uce20\ub97c \uc0ac\uc6a9\uc790\uc5d0\uac8c \ucd94\ucc9c\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n<p>\ud6a8\uc728\uc131\uc5d0\ub3c4 \ubd88\uad6c\ud558\uace0 TF-IDF\uc5d0\ub294 \uba87 \uac00\uc9c0 \uc81c\ud55c \uc0ac\ud56d\uacfc \uc7a0\uc7ac\uc801\uc778 \ubb38\uc81c\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\n<p><strong>\uc6a9\uc5b4 \uacfc\uc789 \ud45c\ud604<\/strong>: \uc77c\ubc18\uc801\uc778 \ub2e8\uc5b4\ub294 \ub192\uc740 TF-IDF \uc810\uc218\ub97c \ubc1b\uc744 \uc218 \uc788\uc5b4 \uc7a0\uc7ac\uc801\uc778 \ud3b8\uacac\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574 \uc804\ucc98\ub9ac \uc911\uc5d0 \uc911\uc9c0 \ub2e8\uc5b4(\uc608: &quot;and&quot;, &quot;the&quot;, &quot;is&quot;)\uac00 \uc81c\uac70\ub418\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud76c\uadc0 \uc6a9\uc5b4<\/strong>: \uba87\uba87 \ubb38\uc11c\uc5d0\ub9cc \ub4f1\uc7a5\ud558\ub294 \uc6a9\uc5b4\ub294 \uc9c0\ub098\uce58\uac8c \ub192\uc740 IDF \uc810\uc218\ub97c \ubc1b\uc544 TF-IDF \uc810\uc218\uc5d0 \uacfc\uc7a5\ub41c \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ubb38\uc81c\ub97c \uc644\ud654\ud558\uae30 \uc704\ud574 \ud3c9\ud65c\ud654 \uae30\uc220\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud655\uc7a5 \uc601\ud5a5<\/strong>: \ubb38\uc11c\uac00 \uae38\uc218\ub85d \uc6d0\uc2dc \uc6a9\uc5b4 \ube48\ub3c4\uac00 \ub192\uc544\uc838 TF-IDF \uc810\uc218\uac00 \ub192\uc544\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud3b8\ud5a5\uc744 \uc124\uba85\ud558\uae30 \uc704\ud574 \uc815\uaddc\ud654 \ubc29\ubc95\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\uc5b4\ud718 \uc678 \uc6a9\uc5b4<\/strong>: \ubb38\uc11c\uc5d0\uc11c \uc0c8\ub86d\uac70\ub098 \ubcf4\uc774\uc9c0 \uc54a\ub294 \uc6a9\uc5b4\uc5d0\ub294 \ud574\ub2f9 IDF \uc810\uc218\uac00 \uc5c6\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc5b4\ud718 \ubc94\uc704\uc5d0 \uc5c6\ub294 \uc6a9\uc5b4\uc5d0 \ub300\ud574 \uace0\uc815 IDF \uac12\uc744 \uc0ac\uc6a9\ud558\uac70\ub098 \ud558\uc704\uc120\ud615 \uc2a4\ucf00\uc77c\ub9c1\uacfc \uac19\uc740 \uae30\uc220\uc744 \uc0ac\uc6a9\ud558\uc5ec \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ub3c4\uba54\uc778 \uc758\uc874\uc131<\/strong>: TF-IDF\uc758 \ud6a8\uc728\uc131\uc740 \ubb38\uc11c\uc758 \ub3c4\uba54\uc778\uacfc \uc131\uaca9\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc77c\ubd80 \ub3c4\uba54\uc778\uc5d0\ub294 \uace0\uae09 \uae30\uc220\uc774\ub098 \ub3c4\uba54\uc778\ubcc4 \uc870\uc815\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n<p>TF-IDF\uc758 \uc774\uc810\uc744 \uadf9\ub300\ud654\ud558\uace0 \uc774\ub7ec\ud55c \uacfc\uc81c\ub97c \ud574\uacb0\ud558\ub824\uba74 \uc2e0\uc911\ud55c \uc804\ucc98\ub9ac, TF-IDF\uc758 \ub2e4\uc591\ud55c \ubcc0\ud615 \uc2e4\ud5d8, \ub370\uc774\ud130\uc5d0 \ub300\ud55c \uc2ec\uce35\uc801\uc778 \uc774\ud574\uac00 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n<h2>\uc8fc\uc694 \ud2b9\uc9d5 \ubc0f \uae30\ud0c0 \uc720\uc0ac\ud55c \uc6a9\uc5b4\uc640\uc758 \ube44\uad50\ub97c \ud45c\uc640 \ubaa9\ub85d \ud615\ud0dc\ub85c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/h2>\n<table>\n<thead>\n<tr>\n<th>\ud2b9\uc131<\/th>\n<th>TF-IDF<\/th>\n<th>\uc6a9\uc5b4 \ube48\ub3c4(TF)<\/th>\n<th>\uc5ed\ubb38\uc11c \ube48\ub3c4(IDF)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ubaa9\uc801<\/td>\n<td>\uc6a9\uc5b4 \uc911\uc694\uc131 \ud3c9\uac00<\/td>\n<td>\uc6a9\uc5b4 \ube48\ub3c4 \uce21\uc815<\/td>\n<td>\ubb38\uc11c \uc804\uccb4\uc5d0\uc11c \uc6a9\uc5b4 \ud76c\uadc0\ub3c4 \ud3c9\uac00<\/td>\n<\/tr>\n<tr>\n<td>\uacc4\uc0b0\ubc29\ubc95<\/td>\n<td>TF * IDF<\/td>\n<td>\ubb38\uc11c\uc758 \uc6d0\uc2dc \uc6a9\uc5b4 \uc218<\/td>\n<td>(\ucd1d \ubb38\uc11c\/\uc6a9\uc5b4\uac00 \ud3ec\ud568\ub41c \ubb38\uc11c)\uc758 \ub85c\uadf8<\/td>\n<\/tr>\n<tr>\n<td>\ud76c\uadc0 \uc6a9\uc5b4\uc758 \uc911\uc694\uc131<\/td>\n<td>\ub192\uc740<\/td>\n<td>\ub0ae\uc740<\/td>\n<td>\ub9e4\uc6b0 \ub192\uc74c<\/td>\n<\/tr>\n<tr>\n<td>\uc77c\ubc18\uc801\uc778 \uc6a9\uc5b4\uc758 \uc911\uc694\uc131<\/td>\n<td>\ub0ae\uc740<\/td>\n<td>\ub192\uc740<\/td>\n<td>\ub0ae\uc740<\/td>\n<\/tr>\n<tr>\n<td>\ubb38\uc11c \uae38\uc774\uc758 \uc601\ud5a5<\/td>\n<td>\ubb38\uc11c \uae38\uc774\ub85c \uc815\uaddc\ud654\ub428<\/td>\n<td>\uc815\ube44\ub840<\/td>\n<td>\ud6a8\uacfc \uc5c6\uc74c<\/td>\n<\/tr>\n<tr>\n<td>\uc5b8\uc5b4 \ub3c5\ub9bd\uc131<\/td>\n<td>\uc608<\/td>\n<td>\uc608<\/td>\n<td>\uc608<\/td>\n<\/tr>\n<tr>\n<td>\uc77c\ubc18\uc801\uc778 \uc0ac\uc6a9 \uc0ac\ub840<\/td>\n<td>\uc815\ubcf4 \uac80\uc0c9, \ud14d\uc2a4\ud2b8 \ubd84\ub958, \ud0a4\uc6cc\ub4dc \ucd94\ucd9c<\/td>\n<td>\uc815\ubcf4 \uac80\uc0c9, \ud14d\uc2a4\ud2b8 \ubd84\ub958<\/td>\n<td>\uc815\ubcf4 \uac80\uc0c9, \ud14d\uc2a4\ud2b8 \ubd84\ub958<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>TF-IDF(Term Frequency-Inverse Document Frequency)\uc5d0 \uad00\ud55c \ubbf8\ub798\uc758 \uad00\uc810\uacfc \uae30\uc220.<\/h2>\n<p>\uae30\uc220\uc774 \uacc4\uc18d \ubc1c\uc804\ud568\uc5d0 \ub530\ub77c \uc77c\ubd80 \ubc1c\uc804\uacfc \uac1c\uc120\uc774 \uc774\ub8e8\uc5b4\uc84c\uc9c0\ub9cc TF-IDF\uc758 \uc5ed\ud560\uc740 \uc5ec\uc804\ud788 \uc911\uc694\ud569\ub2c8\ub2e4. TF-IDF\uc640 \uad00\ub828\ub41c \uba87 \uac00\uc9c0 \uad00\uc810\uacfc \uc7a0\uc7ac\uc801\uc778 \ubbf8\ub798 \uae30\uc220\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\n<p><strong>\uace0\uae09 \uc790\uc5f0\uc5b4 \ucc98\ub9ac(NLP)<\/strong>: Transformers, BERT, GPT\uc640 \uac19\uc740 NLP \ubaa8\ub378\uc758 \ubc1c\uc804\uc73c\ub85c \uc778\ud574 TF-IDF\uc640 \uac19\uc740 \uc804\ud1b5\uc801\uc778 Bag-of-Words \ubc29\uc2dd \ub300\uc2e0 \ubb38\uc11c \ud45c\ud604\uc744 \uc704\ud55c \uc0c1\ud669\ubcc4 \uc784\ubca0\ub529 \ubc0f \ub525\ub7ec\ub2dd \uae30\ubc95\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc5d0 \ub300\ud55c \uad00\uc2ec\uc774 \ub192\uc544\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubaa8\ub378\uc740 \ud14d\uc2a4\ud2b8 \ub370\uc774\ud130\uc5d0\uc11c \ub354 \ud48d\ubd80\ud55c \uc758\ubbf8 \uc815\ubcf4\uc640 \ucee8\ud14d\uc2a4\ud2b8\ub97c \ucea1\ucc98\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ub3c4\uba54\uc778\ubcc4 \uc801\uc751<\/strong>: \ud5a5\ud6c4 \uc5f0\uad6c\ub294 \ub2e4\uc591\ud55c \ub3c4\uba54\uc778\uc758 \uace0\uc720\ud55c \ud2b9\uc131\uacfc \uc694\uad6c \uc0ac\ud56d\uc744 \uc124\uba85\ud558\ub294 TF-IDF\uc758 \ub3c4\uba54\uc778\ubcc4 \uc801\uc751 \uac1c\ubc1c\uc5d0 \uc911\uc810\uc744 \ub458 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\uc815 \uc0b0\uc5c5\uc774\ub098 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ub9de\uac8c TF-IDF\ub97c \uc870\uc815\ud558\uba74 \ubcf4\ub2e4 \uc815\ud655\ud558\uace0 \uc0c1\ud669\uc744 \uc778\uc2dd\ud558\ub294 \uc815\ubcf4 \uac80\uc0c9\uc774 \uac00\ub2a5\ud574\uc9d1\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ub2e4\uc911 \ubaa8\ub4dc \ud45c\ud604<\/strong>: \ub370\uc774\ud130 \uc18c\uc2a4\uac00 \ub2e4\uc591\ud574\uc9c0\uba74\uc11c \ub2e4\uc911 \ubaa8\ub4dc\uc758 \ubb38\uc11c \ud45c\ud604\uc774 \ud544\uc694\ud574\uc84c\uc2b5\ub2c8\ub2e4. \ud5a5\ud6c4 \uc5f0\uad6c\uc5d0\uc11c\ub294 \ud14d\uc2a4\ud2b8 \uc815\ubcf4\ub97c \uc774\ubbf8\uc9c0, \uc624\ub514\uc624 \ubc0f \uae30\ud0c0 \uc591\uc2dd\uacfc \uacb0\ud569\ud558\uc5ec \ubcf4\ub2e4 \ud3ec\uad04\uc801\uc778 \ubb38\uc11c \uc774\ud574\ub97c \uac00\ub2a5\ud558\uac8c \ud558\ub294 \ubc29\ubc95\uc744 \ubaa8\uc0c9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud574\uc11d \uac00\ub2a5\ud55c AI<\/strong>: TF-IDF \ubc0f \uae30\ud0c0 NLP \uae30\uc220\uc744 \ubcf4\ub2e4 \uc27d\uac8c \ud574\uc11d\ud560 \uc218 \uc788\ub3c4\ub85d \ub178\ub825\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud574\uc11d \uac00\ub2a5\ud55c AI\ub97c \ud1b5\ud574 \uc0ac\uc6a9\uc790\ub294 \ud2b9\uc815 \uacb0\uc815\uc774 \ub0b4\ub824\uc9c0\ub294 \ubc29\ubc95\uacfc \uc774\uc720\ub97c \uc774\ud574\ud560 \uc218 \uc788\uc73c\ubbc0\ub85c \uc2e0\ub8b0\ub3c4\uac00 \ub192\uc544\uc9c0\uace0 \ub514\ubc84\uae45\uc774 \ub354 \uc26c\uc6cc\uc9d1\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ud558\uc774\ube0c\ub9ac\ub4dc \uc811\uadfc \ubc29\uc2dd<\/strong>: \ud5a5\ud6c4 \ubc1c\uc804\uc5d0\ub294 TF-IDF\ub97c \ub2e8\uc5b4 \uc784\ubca0\ub529 \ub610\ub294 \uc8fc\uc81c \ubaa8\ub378\ub9c1\uacfc \uac19\uc740 \ucd5c\uc2e0 \uae30\uc220\uacfc \uacb0\ud569\ud558\uc5ec \ub450 \uc811\uadfc \ubc29\uc2dd\uc758 \uc7a5\uc810\uc744 \ud65c\uc6a9\ud558\uc5ec \uc7a0\uc7ac\uc801\uc73c\ub85c \ub354 \uc815\ud655\ud558\uace0 \uac15\ub825\ud55c \uc2dc\uc2a4\ud15c\uc744 \ub9cc\ub4dc\ub294 \uac83\uc774 \ud3ec\ud568\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n<h2>\ud504\ub85d\uc2dc \uc11c\ubc84\ub97c \uc0ac\uc6a9\ud558\uac70\ub098 TF-IDF(\uc6a9\uc5b4 \ube48\ub3c4-\uc5ed \ubb38\uc11c \ube48\ub3c4)\uc640 \uc5f0\uacb0\ud558\ub294 \ubc29\ubc95.<\/h2>\n<p>\ud504\ub85d\uc2dc \uc11c\ubc84\uc640 TF-IDF\ub294 \uc9c1\uc811\uc801\uc73c\ub85c \uc5f0\uacb0\ub418\uc5b4 \uc788\uc9c0 \uc54a\uc9c0\ub9cc \ud2b9\uc815 \uc2dc\ub098\ub9ac\uc624\uc5d0\uc11c\ub294 \uc11c\ub85c\ub97c \ubcf4\uc644\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\uc640 \uc778\ud130\ub137 \uac04\uc758 \uc911\uac1c\uc790 \uc5ed\ud560\uc744 \ud558\uc5ec \uc0ac\uc6a9\uc790\uac00 \uc911\uac1c \uc11c\ubc84\ub97c \ud1b5\ud574 \uc6f9 \ucf58\ud150\uce20\uc5d0 \uc561\uc138\uc2a4\ud560 \uc218 \uc788\ub3c4\ub85d \ud574\uc90d\ub2c8\ub2e4. \ud504\ub85d\uc2dc \uc11c\ubc84\ub97c TF-IDF\uc640 \ud568\uaed8 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uba87 \uac00\uc9c0 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\n<p><strong>\uc6f9 \uc2a4\ud06c\ub798\ud551 \ubc0f \ud06c\ub864\ub9c1<\/strong>: \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ub300\ub7c9\uc758 \uc6f9 \ub370\uc774\ud130\ub97c \uc218\uc9d1\ud574\uc57c \ud558\ub294 \uc6f9 \uc2a4\ud06c\ub798\ud551 \ubc0f \ud06c\ub864\ub9c1 \uc791\uc5c5\uc5d0 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. TF-IDF\ub294 \ub2e4\uc591\ud55c \uc790\uc5f0\uc5b4 \ucc98\ub9ac \uc791\uc5c5\uc744 \uc704\ud574 \uc2a4\ud06c\ub7a9\ub41c \ud14d\uc2a4\ud2b8 \ub370\uc774\ud130\uc5d0 \uc801\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\uc775\uba85\uc131\uacfc \uac1c\uc778\uc815\ubcf4 \ubcf4\ud638<\/strong>: \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \uc0ac\uc6a9\uc790\uac00 \ubc29\ubb38\ud558\ub294 \uc6f9\uc0ac\uc774\ud2b8\uc5d0\uc11c IP \uc8fc\uc18c\ub97c \uc228\uaca8 \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc775\uba85\uc131\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. TF-IDF\ub294 \ubb38\uc11c\ub97c \uc0c9\uc778\ud654\ud560 \ub54c \uc7a0\uc7ac\uc801\uc778 IP \uc8fc\uc18c \ubcc0\ud654\ub97c \uace0\ub824\ud574\uc57c \ud560 \uc218 \uc788\uc73c\ubbc0\ub85c \uc774\ub294 \uc815\ubcf4 \uac80\uc0c9 \uc791\uc5c5\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ubd84\uc0b0 \ub370\uc774\ud130 \uc218\uc9d1<\/strong>: TF-IDF \uacc4\uc0b0\uc740 \ud2b9\ud788 \ub300\uaddc\ubaa8 \ub9d0\ubb49\uce58\uc758 \uacbd\uc6b0 \ub9ac\uc18c\uc2a4 \uc9d1\uc57d\uc801\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud504\ub85d\uc2dc \uc11c\ubc84\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130 \uc218\uc9d1 \ud504\ub85c\uc138\uc2a4\ub97c \uc5ec\ub7ec \uc11c\ubc84\uc5d0 \ubd84\uc0b0\uc2dc\ucf1c \uacc4\uc0b0 \ubd80\ub2f4\uc744 \uc904\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><strong>\ub2e4\uad6d\uc5b4 \ub370\uc774\ud130 \uc218\uc9d1<\/strong>: \uc11c\ub85c \ub2e4\ub978 \uc9c0\uc5ed\uc5d0 \uc704\uce58\ud55c \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ub2e4\uad6d\uc5b4 \ub370\uc774\ud130 \uc218\uc9d1\uc744 \uc6a9\uc774\ud558\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. TF-IDF\ub294 \uc5b8\uc5b4 \ub3c5\ub9bd\uc801\uc778 \uc815\ubcf4 \uac80\uc0c9\uc744 \uc9c0\uc6d0\ud558\uae30 \uc704\ud574 \ub2e4\uc591\ud55c \uc5b8\uc5b4\ub85c \ub41c \ubb38\uc11c\uc5d0 \uc801\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n<p>\ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ub370\uc774\ud130 \uc218\uc9d1 \ubc0f \uc561\uc138\uc2a4\ub97c \uc9c0\uc6d0\ud560 \uc218 \uc788\uc9c0\ub9cc \ubcf8\uc9c8\uc801\uc73c\ub85c TF-IDF \uacc4\uc0b0 \ud504\ub85c\uc138\uc2a4 \uc790\uccb4\uc5d0\ub294 \uc601\ud5a5\uc744 \ubbf8\uce58\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ud504\ub85d\uc2dc \uc11c\ubc84\uc758 \uc0ac\uc6a9\uc740 \uc8fc\ub85c \ub370\uc774\ud130 \uc218\uc9d1 \ubc0f \uc0ac\uc6a9\uc790 \uac1c\uc778 \uc815\ubcf4 \ubcf4\ud638\ub97c \uac15\ud654\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<h2>\uad00\ub828\ub41c \ub9c1\ud06c\ub4e4<\/h2>\n<p>TF-IDF(\uc6a9\uc5b4 \ube48\ub3c4-\ubb38\uc11c \ube48\ub3c4 \uc5ed\uc218) \ubc0f \ud574\ub2f9 \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc744 \ubcf4\ub824\uba74 \ub2e4\uc74c \ub9ac\uc18c\uc2a4\ub97c \uc0b4\ud3b4\ubcf4\uc138\uc694.<\/p>\n<ol>\n<li>\n<p><a href=\"https:\/\/www.amazon.com\/Information-Retrieval-Second-C-J-van-Rijsbergen\/dp\/0853127742\" target=\"_new\" rel=\"noopener nofollow\">CJ van Rijsbergen\uc758 \uc815\ubcf4 \uac80\uc0c9<\/a> \u2013 TF-IDF\ub97c \ud3ec\ud568\ud55c \uc815\ubcf4 \uac80\uc0c9 \uae30\uc220\uc744 \ub2e4\ub8e8\ub294 \ud3ec\uad04\uc801\uc778 \ucc45\uc785\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/scikit-learn.org\/stable\/modules\/feature_extraction.html#tfidf-term-weighting\" target=\"_new\" rel=\"noopener nofollow\">TF-IDF\uc5d0 \ub300\ud55c Scikit-learn \ubb38\uc11c<\/a> \u2013 Scikit-learn\uc758 \ubb38\uc11c\ub294 Python\uc758 TF-IDF\uc5d0 \ub300\ud55c \uc2e4\uc81c \uc608\uc81c\uc640 \uad6c\ud604 \uc138\ubd80 \uc815\ubcf4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><a href=\"http:\/\/infolab.stanford.edu\/~backrub\/google.html\" target=\"_new\" rel=\"noopener nofollow\">Sergey Brin\uacfc Lawrence Page\uc758 \ub300\uaddc\ubaa8 \ud558\uc774\ud37c\ud14d\uc2a4\ud2b8 \uc6f9 \uac80\uc0c9 \uc5d4\uc9c4 \ubd84\uc11d<\/a> \u2013 \ucd08\uae30 \uac80\uc0c9 \uc54c\uace0\ub9ac\uc998\uc5d0\uc11c TF-IDF\uc758 \uc5ed\ud560\uc744 \ub17c\uc758\ud558\ub294 \uc6d0\ubcf8 Google \uac80\uc0c9 \uc5d4\uc9c4 \ubb38\uc11c.<\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/nlp.stanford.edu\/IR-book\/information-retrieval-book.html\" target=\"_new\" rel=\"noopener nofollow\">Christopher D. Manning, Prabhakar Raghavan \ubc0f Hinrich Sch\u00fctze\uc758 \uc815\ubcf4 \uac80\uc0c9 \uc18c\uac1c<\/a> \u2013 TF-IDF\ub97c \ud3ec\ud568\ud558\uc5ec \uc815\ubcf4 \uac80\uc0c9\uc758 \ub2e4\uc591\ud55c \uce21\uba74\uc744 \ub2e4\ub8e8\ub294 \uc628\ub77c\uc778 \ucc45\uc785\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/link.springer.com\/chapter\/10.1007\/978-981-15-1143-0_12\" target=\"_new\" rel=\"noopener nofollow\">SR Brinjal \ubc0f MVS Sowmya\uc758 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc0ac\uc6a9\ud55c \ud14d\uc2a4\ud2b8 \ub9c8\uc774\ub2dd\uc744 \uc704\ud55c TF-IDF \uae30\uc220<\/a> \u2013 \ud14d\uc2a4\ud2b8 \ub9c8\uc774\ub2dd\uc5d0\uc11c TF-IDF\uc758 \uc801\uc6a9\uc744 \ud0d0\uad6c\ud558\ub294 \uc5f0\uad6c \ub17c\ubb38.<\/p>\n<\/li>\n<\/ol>\n<p>TF-IDF\uc640 \ud574\ub2f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc774\ud574\ud558\uba74 \uc815\ubcf4 \uac80\uc0c9 \ubc0f NLP \uc791\uc5c5\uc774 \ud06c\uac8c \ud5a5\uc0c1\ub418\uc5b4 \uc5f0\uad6c\uc6d0, \uac1c\ubc1c\uc790 \ubc0f \uae30\uc5c5 \ubaa8\ub450\uc5d0\uac8c \uadc0\uc911\ud55c \ub3c4\uad6c\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>","protected":false},"featured_media":470665,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479277","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Term Frequency-Inverse Document Frequency (TF-IDF)<\/mark>","faq_items":[{"question":"What is Term Frequency-Inverse Document Frequency (TF-IDF)?","answer":"<p>Term Frequency-Inverse Document Frequency (TF-IDF) is a widely used technique in information retrieval and natural language processing. It measures the importance of a term within a collection of documents by considering its frequency in a specific document and comparing it to its occurrence in the entire corpus. TF-IDF plays a crucial role in search engines, text classification, document clustering, and content recommendation systems.<\/p>"},{"question":"How did TF-IDF originate, and who first mentioned it?","answer":"<p>The concept of TF-IDF can be traced back to the early 1970s. Gerard Salton first introduced the term \"term frequency\" in his work on information retrieval. Karen Sp\u00e4rck Jones later proposed the concept of \"inverse document frequency\" as part of her research on statistical natural language processing. The combination of these ideas led to the development of TF-IDF, popularized by Salton and Buckley in the late 1980s.<\/p>"},{"question":"How does TF-IDF work?","answer":"<p>TF-IDF operates on the idea that a term's importance increases with its frequency in a document and decreases with its occurrence across all documents. The TF-IDF score for a term in a document is calculated by multiplying its term frequency (TF) by its inverse document frequency (IDF). This score quantifies the term's relevance to the document relative to the entire corpus.<\/p>"},{"question":"What are the key features of TF-IDF?","answer":"<p>TF-IDF provides several key features, including assessing term importance, document ranking, keyword extraction, and content-based filtering. It is language-independent and applicable to various languages. However, it does not consider word order, semantics, or context, and may not be ideal for specialized domains requiring more advanced techniques.<\/p>"},{"question":"What types of TF-IDF exist?","answer":"<p>Different types of TF-IDF include raw term frequency, logarithmically scaled term frequency, double normalization TF, augmented term frequency, boolean term frequency, and smooth IDF. Each variant offers specific adjustments to address different scenarios.<\/p>"},{"question":"How can TF-IDF be used, and what problems may arise?","answer":"<p>TF-IDF is used in document search, text classification, keyword extraction, and more. However, it may face challenges such as term overrepresentation, handling rare terms, scaling impact, and out-of-vocabulary terms. Preprocessing, variant selection, and understanding the data are essential to address these issues.<\/p>"},{"question":"What are the future perspectives for TF-IDF?","answer":"<p>The future of TF-IDF involves advanced NLP techniques like transformers, domain-specific adaptations, multi-modal representations, and efforts towards interpretable AI. Hybrid approaches combining TF-IDF with newer techniques may lead to more accurate and robust systems.<\/p>"},{"question":"How are proxy servers associated with TF-IDF?","answer":"<p>Proxy servers and TF-IDF are not directly related, but proxy servers can be used in tasks like web scraping, distributed data collection, and multilingual data collection, enhancing data gathering and user privacy.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki\/479277","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki\/479277\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/media\/470665"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/media?parent=479277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}