{"id":815,"date":"2024-07-11T10:23:52","date_gmt":"2024-07-11T10:23:52","guid":{"rendered":"http:\/\/www.ohsumin.com\/?p=815"},"modified":"2025-06-11T01:23:00","modified_gmt":"2025-06-11T01:23:00","slug":"%ed%8c%90%eb%b3%84-%eb%b6%84%ec%84%9d","status":"publish","type":"post","link":"http:\/\/www.inmining.co.kr\/?p=815","title":{"rendered":"\ud310\ubcc4 \ubd84\uc11d(LDA : Linear Discriminate Analysis)"},"content":{"rendered":"\n

\ud310\ubcc4\ubd84\uc11d(Discriminant Analysis)\uc740 \ud1b5\uacc4\ud559\uacfc \uae30\uacc4 \ud559\uc2b5\uc5d0\uc11c \uad00\ucc30\ub41c \ub370\uc774\ud130\ub97c \uc5ec\ub7ec \ud074\ub798\uc2a4 \uc911 \ud558\ub098\ub85c \ubd84\ub958\ud558\ub294 \uae30\ubc95\uc785\ub2c8\ub2e4. \uc8fc\ub85c \ud310\ubcc4\ubd84\uc11d\uc740 \ub2e4\uc74c \ub450 \uac00\uc9c0 \uc8fc\uc694 \ubc29\ubc95\uc73c\ub85c \ub098\ub269\ub2c8\ub2e4: \uc120\ud615 \ud310\ubcc4\ubd84\uc11d(LDA, Linear Discriminant Analysis)\uacfc \uc774\ucc28 \ud310\ubcc4\ubd84\uc11d(QDA, Quadratic Discriminant Analysis).<\/p>\n\n\n\n

\\(\\)<\/p>\n\n\n\n

<\/span>1. \uc120\ud615 \ud310\ubcc4\ubd84\uc11d (LDA)<\/span><\/h3>\n\n\n\n

LDA\ub294 \ud074\ub798\uc2a4 \uac04\uc758 \ubcc0\ubcc4\ub825\uc744 \ucd5c\ub300\ud654\ud558\ub294 \uc120\ud615 \uacb0\ud569\uc744 \ucc3e\ub294 \uae30\ubc95\uc785\ub2c8\ub2e4. \uc8fc\ub85c \ub2e4\uc74c\uacfc \uac19\uc740 \uc808\ucc28\ub85c \uc218\ud589\ub429\ub2c8\ub2e4:<\/p>\n\n\n\n

    \n
  • \uac00\uc815<\/strong>: \uac01 \ud074\ub798\uc2a4\ub294 \uacf5\ud1b5\ub41c \uacf5\ubd84\uc0b0 \ud589\ub82c\uc744 \uac00\uc9c0\uba70, \uac01 \ud074\ub798\uc2a4\uc758 \ub370\uc774\ud130\ub294 \ub2e4\ubcc0\ub7c9 \uc815\uaddc\ubd84\ud3ec\ub97c \ub530\ub985\ub2c8\ub2e4.<\/li>\n\n\n\n
  • \ubaa9\ud45c<\/strong>: \ub450 \ud074\ub798\uc2a4 \uac04\uc758 \ud3c9\uade0 \ubca1\ud130 \ucc28\uc774\ub97c \ucd5c\ub300\ud654\ud558\uace0, \ub3d9\uc2dc\uc5d0 \uac01 \ud074\ub798\uc2a4 \ub0b4\ubd80\uc758 \ubd84\uc0b0\uc744 \ucd5c\uc18c\ud654\ud558\ub294 \ubc29\ud5a5\uc744 \ucc3e\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n
  • \uc218\uc2dd<\/strong>: \ud310\ubcc4 \ud568\uc218\ub294 \\( y = \\mathbf{w}^T \\mathbf{x} + c \\)\uc758 \ud615\ud0dc\ub97c \uac00\uc9d1\ub2c8\ub2e4. \uc5ec\uae30\uc11c \\(\\mathbf{w}\\)\ub294 \uc120\ud615 \ud310\ubcc4 \uacc4\uc218 \ubca1\ud130\uc774\uace0, \\(\\mathbf{x}\\)\ub294 \uc785\ub825 \ubca1\ud130\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n
  • \ud310\ubcc4 \uae30\uc900<\/strong>: \uc0c8\ub85c\uc6b4 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\ub97c \uc774 \ud310\ubcc4 \ud568\uc218\uc5d0 \ub123\uc5b4\uc11c \ud310\ubcc4 \uac12\uc744 \uacc4\uc0b0\ud55c \ud6c4, \uadf8 \uac12\uc744 \uae30\ubc18\uc73c\ub85c \ud074\ub798\uc2a4\ub97c \uc608\uce21\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n

    <\/span>2. \uc774\ucc28 \ud310\ubcc4\ubd84\uc11d (QDA)<\/span><\/h3>\n\n\n\n

    QDA\ub294 \uac01 \ud074\ub798\uc2a4\uac00 \uc11c\ub85c \ub2e4\ub978 \uacf5\ubd84\uc0b0 \ud589\ub82c\uc744 \uac00\uc9c8 \uc218 \uc788\ub2e4\ub294 \uc810\uc5d0\uc11c LDA\uc640 \ub2e4\ub985\ub2c8\ub2e4. \uc774\ub294 \ub354 \ubcf5\uc7a1\ud55c \ubaa8\ub378\uc744 \ud5c8\uc6a9\ud558\uc9c0\ub9cc, \ub354 \ub9ce\uc740 \ub9e4\uac1c\ubcc0\uc218\ub97c \ucd94\uc815\ud574\uc57c \ud558\ubbc0\ub85c \ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \ub9ce\uc544\uc57c \uc720\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

      \n
    • \uac00\uc815<\/strong>: \uac01 \ud074\ub798\uc2a4\ub294 \uc11c\ub85c \ub2e4\ub978 \uacf5\ubd84\uc0b0 \ud589\ub82c\uc744 \uac00\uc9c0\uba70, \uac01 \ud074\ub798\uc2a4\uc758 \ub370\uc774\ud130\ub294 \ub2e4\ubcc0\ub7c9 \uc815\uaddc\ubd84\ud3ec\ub97c \ub530\ub985\ub2c8\ub2e4.<\/li>\n\n\n\n
    • \ubaa9\ud45c<\/strong>: \ud074\ub798\uc2a4\ubcc4\ub85c \ub2e4\ub978 \uacf5\ubd84\uc0b0 \ud589\ub82c\uc744 \uace0\ub824\ud558\uc5ec \ud310\ubcc4 \ud568\uc218\ub97c \ub9cc\ub4ed\ub2c8\ub2e4.<\/li>\n\n\n\n
    • \uc218\uc2dd<\/strong>: \ud310\ubcc4 \ud568\uc218\ub294 \uc120\ud615\uc774 \uc544\ub2cc \uc774\ucc28\uc2dd(2\ucc28\uc2dd) \ud615\ud0dc\ub97c \uac00\uc9d1\ub2c8\ub2e4.<\/li>\n\n\n\n
    • \ud310\ubcc4 \uae30\uc900<\/strong>: \uc0c8\ub85c\uc6b4 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\ub97c \uac01 \ud074\ub798\uc2a4\uc758 \ud310\ubcc4 \ud568\uc218\uc5d0 \ub123\uc5b4\uc11c \uac00\uc7a5 \ub192\uc740 \uac12\uc744 \uac00\uc9c0\ub294 \ud074\ub798\uc2a4\ub85c \ubd84\ub958\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n

      <\/span>\uc8fc\uc694 \ucc28\uc774\uc810<\/span><\/h3>\n\n\n\n
        \n
      • \ubaa8\ub378 \ubcf5\uc7a1\ub3c4<\/strong>: LDA\ub294 \uc120\ud615 \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\ubbc0\ub85c \uc0c1\ub300\uc801\uc73c\ub85c \ub2e8\uc21c\ud569\ub2c8\ub2e4. QDA\ub294 \uc774\ucc28 \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\ubbc0\ub85c \ub354 \ubcf5\uc7a1\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
      • \uac00\uc815<\/strong>: LDA\ub294 \ubaa8\ub4e0 \ud074\ub798\uc2a4\uac00 \ub3d9\uc77c\ud55c \uacf5\ubd84\uc0b0 \ud589\ub82c\uc744 \uac00\uc9c0\ub294 \uac83\uc73c\ub85c \uac00\uc815\ud558\ub294 \ubc18\uba74, QDA\ub294 \uac01 \ud074\ub798\uc2a4\uac00 \uc11c\ub85c \ub2e4\ub978 \uacf5\ubd84\uc0b0 \ud589\ub82c\uc744 \uac00\uc9c8 \uc218 \uc788\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
      • \ub370\uc774\ud130 \uc694\uad6c \uc0ac\ud56d<\/strong>: QDA\ub294 \ub354 \ub9ce\uc740 \ub9e4\uac1c\ubcc0\uc218\ub97c \ucd94\uc815\ud574\uc57c \ud558\ubbc0\ub85c \ub354 \ub9ce\uc740 \ub370\uc774\ud130\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n
        \"\"<\/figure>\n\n\n\n

        \uc704 \uadf8\ub9bc\uc740 \uc120\ud615 \ud310\ubcc4\ubd84\uc11d(LDA)\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub450 \ud074\ub798\uc2a4\uc758 \ub370\uc774\ud130\ub97c \ubd84\ub958\ud55c \uacb0\uacfc\ub97c \uc2dc\uac01\ud654\ud55c \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

          \n
        • \ubc30\uacbd\uc758 \uc0c9\uc0c1<\/strong>: \uac01 \ud074\ub798\uc2a4\uc758 \uacb0\uc815 \uacbd\uacc4\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uac01 \uc0c9\uc0c1 \uc601\uc5ed\uc740 LDA\uac00 \ud574\ub2f9 \uc601\uc5ed\uc5d0 \uc18d\ud558\ub294 \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\ub97c \ud2b9\uc815 \ud074\ub798\uc2a4\ub85c \ubd84\ub958\ud558\ub294 \uac83\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/li>\n\n\n\n
        • \ub370\uc774\ud130 \ud3ec\uc778\ud2b8<\/strong>: \uc6d0\uc73c\ub85c \ud45c\uc2dc\ub41c \uc810\ub4e4\uc740 \ub450 \ud074\ub798\uc2a4\uc758 \uc2e4\uc81c \ub370\uc774\ud130 \ud3ec\uc778\ud2b8\uc785\ub2c8\ub2e4. \ub2e4\ub978 \uc0c9\uc0c1\uc73c\ub85c \ud45c\uc2dc\ub418\uc5b4 \uc11c\ub85c \ub2e4\ub978 \ud074\ub798\uc2a4\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/li>\n\n\n\n
        • \uacb0\uc815 \uacbd\uacc4<\/strong>: \ub450 \ud074\ub798\uc2a4 \uac04\uc758 \uacbd\uacc4\ub294 \uc120\ud615\uc73c\ub85c \uadf8\ub824\uc9d1\ub2c8\ub2e4. \uc774 \uc120\uc740 LDA\uac00 \ud074\ub798\uc2a4 \uac04\uc758 \ubd84\ub9ac\ub97c \ucd5c\ub300\ud654\ud558\uae30 \uc704\ud574 \ucc3e\uc740 \uc120\ud615 \uacb0\ud569\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n

          LDA\ub294 \uc8fc\uc5b4\uc9c4 \ub370\uc774\ud130\uc5d0 \ub300\ud574 \ud074\ub798\uc2a4 \uac04\uc758 \ucc28\uc774\ub97c \ucd5c\ub300\ud654\ud558\ub294 \uc120\ud615 \uacb0\ud569\uc744 \ucc3e\uc73c\uba70, \uc774\ub294 \uc8fc\ub85c \uac01 \ud074\ub798\uc2a4\uc758 \ud3c9\uade0\uacfc \uacf5\ud1b5\ub41c \uacf5\ubd84\uc0b0\uc744 \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

          <\/span>\uc751\uc6a9 \uc0ac\ub840<\/span><\/h3>\n\n\n\n
            \n
          • \uc758\ub8cc \uc9c4\ub2e8<\/strong>: \ud2b9\uc815 \uc9c8\ubcd1 \uc5ec\ubd80\ub97c \uc608\uce21\ud558\ub294 \ub370 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n
          • \ub9c8\ucf00\ud305<\/strong>: \uace0\uac1d\uc758 \uad6c\ub9e4 \ud589\ub3d9\uc744 \uae30\ubc18\uc73c\ub85c \uace0\uac1d \uc138\uadf8\uba3c\ud2b8\ub97c \ubd84\ub958\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n
          • \uae08\uc735<\/strong>: \ub300\ucd9c \uc2e0\uccad\uc790\uc758 \uc2e0\uc6a9 \ub4f1\uae09\uc744 \uc608\uce21\ud558\ub294 \ub370 \uc0ac\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n

            \ud310\ubcc4\ubd84\uc11d\uc740 \ubd84\ub958 \ubb38\uc81c\uc5d0\uc11c \ud6a8\uacfc\uc801\uc778 \uae30\ubc95\uc73c\ub85c, \ud2b9\ud788 \ub370\uc774\ud130\uac00 \uc815\uaddc\ubd84\ud3ec\ub97c \ub530\ub974\ub294 \uacbd\uc6b0\uc5d0 \uc720\uc6a9\ud569\ub2c8\ub2e4. \ubaa8\ub378 \uc120\ud0dd\uc740 \ub370\uc774\ud130\uc758 \ud2b9\uc131\uacfc \ubb38\uc81c\uc758 \ubcf5\uc7a1\uc131\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

            \ud310\ubcc4\ubd84\uc11d(Discriminant Analysis)\uc740 \ud1b5\uacc4\ud559\uacfc \uae30\uacc4 \ud559\uc2b5\uc5d0\uc11c \uad00\ucc30\ub41c \ub370\uc774\ud130\ub97c \uc5ec\ub7ec \ud074\ub798\uc2a4 \uc911 \ud558\ub098\ub85c \ubd84\ub958\ud558\ub294 \uae30\ubc95\uc785\ub2c8\ub2e4. \uc8fc\ub85c \ud310\ubcc4\ubd84\uc11d\uc740 \ub2e4\uc74c \ub450 \uac00\uc9c0…<\/p>\n","protected":false},"author":1,"featured_media":922,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-815","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stat","wpcat-6-id"],"_links":{"self":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=815"}],"version-history":[{"count":5,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/815\/revisions"}],"predecessor-version":[{"id":962,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/815\/revisions\/962"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=\/wp\/v2\/media\/922"}],"wp:attachment":[{"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=815"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.inmining.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}