{"id":479036,"date":"2023-08-09T10:01:33","date_gmt":"2023-08-09T10:01:33","guid":{"rendered":""},"modified":"2023-09-05T11:18:03","modified_gmt":"2023-09-05T11:18:03","slug":"smote","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/smote\/","title":{"rendered":"NH\u1eb8"},"content":{"rendered":"

SMOTE, vi\u1ebft t\u1eaft c\u1ee7a K\u1ef9 thu\u1eadt l\u1ea5y m\u1eabu qu\u00e1 m\u1ee9c thi\u1ec3u s\u1ed1 t\u1ed5ng h\u1ee3p, l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p t\u0103ng c\u01b0\u1eddng d\u1eef li\u1ec7u m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ecdc m\u00e1y \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 v\u1ec1 b\u1ed9 d\u1eef li\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng. Trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf, c\u00e1c b\u1ed9 d\u1eef li\u1ec7u th\u01b0\u1eddng ch\u1ee9a s\u1ef1 ph\u00e2n b\u1ed5 l\u1edbp kh\u00f4ng c\u00e2n b\u1eb1ng, trong \u0111\u00f3 m\u1ed9t l\u1edbp (l\u1edbp thi\u1ec3u s\u1ed1) c\u00f3 \u00edt phi\u00ean b\u1ea3n h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c l\u1edbp kh\u00e1c (l\u1edbp \u0111a s\u1ed1). S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c m\u00f4 h\u00ecnh sai l\u1ec7ch ho\u1ea1t \u0111\u1ed9ng k\u00e9m trong vi\u1ec7c nh\u1eadn bi\u1ebft t\u1ea7ng l\u1edbp thi\u1ec3u s\u1ed1, d\u1eabn \u0111\u1ebfn c\u00e1c d\u1ef1 \u0111o\u00e1n d\u01b0\u1edbi m\u1ee9c t\u1ed1i \u01b0u.<\/p>\n

SMOTE \u0111\u01b0\u1ee3c ra \u0111\u1eddi \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch t\u1ea1o ra c\u00e1c m\u1eabu t\u1ed5ng h\u1ee3p c\u1ee7a l\u1edbp thi\u1ec3u s\u1ed1, t\u1eeb \u0111\u00f3 c\u00e2n b\u1eb1ng s\u1ef1 ph\u00e2n b\u1ed5 l\u1edbp v\u00e0 n\u00e2ng cao kh\u1ea3 n\u0103ng h\u1ecdc h\u1ecfi t\u1eeb l\u1edbp thi\u1ec3u s\u1ed1 c\u1ee7a m\u00f4 h\u00ecnh. K\u1ef9 thu\u1eadt n\u00e0y \u0111\u00e3 t\u00ecm th\u1ea5y nhi\u1ec1u \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 ch\u1ea9n \u0111o\u00e1n y t\u1ebf, ph\u00e1t hi\u1ec7n gian l\u1eadn v\u00e0 ph\u00e2n lo\u1ea1i h\u00ecnh \u1ea3nh, n\u01a1i ph\u1ed5 bi\u1ebfn c\u00e1c b\u1ed9 d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a SMote v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n

SMOTE \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t b\u1edfi Nitesh V. Chawla, Kevin W. Bowyer, Lawrence O. Hall v\u00e0 W. Philip Kegelmeyer trong b\u00e0i b\u00e1o chuy\u00ean \u0111\u1ec1 c\u1ee7a h\u1ecd c\u00f3 t\u1ef1a \u0111\u1ec1 \u201cSMOTE: K\u1ef9 thu\u1eadt l\u1ea5y m\u1eabu qu\u00e1 m\u1ee9c thi\u1ec3u s\u1ed1 t\u1ed5ng h\u1ee3p\u201d xu\u1ea5t b\u1ea3n n\u0103m 2002. C\u00e1c t\u00e1c gi\u1ea3 \u0111\u00e3 nh\u1eadn ra nh\u1eefng th\u00e1ch th\u1ee9c \u0111\u1eb7t ra b\u1edfi c\u00e1c b\u1ed9 d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng v\u00e0 ph\u00e1t tri\u1ec3n SMOTE nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p \u0111\u1ed5i m\u1edbi nh\u1eb1m gi\u1ea3m thi\u1ec3u sai l\u1ec7ch do c\u00e1c b\u1ed9 d\u1eef li\u1ec7u \u0111\u00f3 g\u00e2y ra.<\/p>\n

Nghi\u00ean c\u1ee9u c\u1ee7a Chawla et al. \u0111\u00e3 ch\u1ee9ng minh r\u1eb1ng SMOTE c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c b\u1ed9 ph\u00e2n lo\u1ea1i khi x\u1eed l\u00fd d\u1eef li\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng. K\u1ec3 t\u1eeb \u0111\u00f3, SMOTE \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn v\u00e0 tr\u1edf th\u00e0nh m\u1ed9t k\u1ef9 thu\u1eadt c\u01a1 b\u1ea3n trong l\u0129nh v\u1ef1c h\u1ecdc m\u00e1y.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 SMOTE<\/h2>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a SMOTE \u2013 C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SMOTE<\/h3>\n

SMOTE ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch t\u1ea1o c\u00e1c m\u1eabu t\u1ed5ng h\u1ee3p cho l\u1edbp thi\u1ec3u s\u1ed1 b\u1eb1ng c\u00e1ch n\u1ed9i suy gi\u1eefa c\u00e1c phi\u00ean b\u1ea3n hi\u1ec7n c\u00f3 c\u1ee7a l\u1edbp thi\u1ec3u s\u1ed1. C\u00e1c b\u01b0\u1edbc ch\u00ednh c\u1ee7a thu\u1eadt to\u00e1n SMOTE nh\u01b0 sau:<\/p>\n

    \n
  1. X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp thi\u1ec3u s\u1ed1 trong t\u1eadp d\u1eef li\u1ec7u.<\/li>\n
  2. \u0110\u1ed1i v\u1edbi m\u1ed7i tr\u01b0\u1eddng h\u1ee3p thi\u1ec3u s\u1ed1, h\u00e3y x\u00e1c \u0111\u1ecbnh k h\u00e0ng x\u00f3m g\u1ea7n nh\u1ea5t c\u1ee7a n\u00f3 trong l\u1edbp thi\u1ec3u s\u1ed1.<\/li>\n
  3. Ch\u1ecdn ng\u1eabu nhi\u00ean m\u1ed9t trong k h\u00e0ng x\u00f3m g\u1ea7n nh\u1ea5t.<\/li>\n
  4. T\u1ea1o m\u1ed9t phi\u00ean b\u1ea3n t\u1ed5ng h\u1ee3p b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p tuy\u1ebfn t\u00ednh gi\u1eefa phi\u00ean b\u1ea3n l\u00e2n c\u1eadn \u0111\u00e3 ch\u1ecdn v\u00e0 phi\u00ean b\u1ea3n g\u1ed1c.<\/li>\n<\/ol>\n

    Thu\u1eadt to\u00e1n SMOTE c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft trong ph\u01b0\u01a1ng tr\u00ecnh sau, trong \u0111\u00f3 x_i \u0111\u1ea1i di\u1ec7n cho th\u1ec3 hi\u1ec7n thi\u1ec3u s\u1ed1 ban \u0111\u1ea7u, x_n l\u00e0 h\u00e0ng x\u00f3m \u0111\u01b0\u1ee3c ch\u1ecdn ng\u1eabu nhi\u00ean v\u00e0 \u03b1 l\u00e0 gi\u00e1 tr\u1ecb ng\u1eabu nhi\u00ean trong kho\u1ea3ng t\u1eeb 0 \u0111\u1ebfn 1:<\/p>\n

    Phi\u00ean b\u1ea3n t\u1ed5ng h\u1ee3p = x_i + \u03b1 * (x_n \u2013 x_i)<\/p>\n

    B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i SMOTE cho c\u00e1c phi\u00ean b\u1ea3n l\u1edbp thi\u1ec3u s\u1ed1, s\u1ef1 ph\u00e2n b\u1ed5 l\u1edbp \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng l\u1ea1i, t\u1ea1o ra m\u1ed9t t\u1eadp d\u1eef li\u1ec7u mang t\u00ednh \u0111\u1ea1i di\u1ec7n h\u01a1n \u0111\u1ec3 hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh.<\/p>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a SMOTE<\/h2>\n

    C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a SMOTE nh\u01b0 sau:<\/p>\n

      \n
    1. \n

      T\u0103ng c\u01b0\u1eddng d\u1eef li\u1ec7u<\/strong>: SMOTE t\u0103ng c\u01b0\u1eddng l\u1edbp thi\u1ec3u s\u1ed1 b\u1eb1ng c\u00e1ch t\u1ea1o c\u00e1c m\u1eabu t\u1ed5ng h\u1ee3p, gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 m\u1ea5t c\u00e2n b\u1eb1ng l\u1edbp trong t\u1eadp d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

    2. \n

      Gi\u1ea3m thi\u00ean v\u1ecb<\/strong>: B\u1eb1ng c\u00e1ch t\u0103ng s\u1ed1 l\u01b0\u1ee3ng phi\u00ean b\u1ea3n c\u1ee7a l\u1edbp thi\u1ec3u s\u1ed1, SMOTE gi\u1ea3m \u0111\u1ed9 l\u1ec7ch trong b\u1ed9 ph\u00e2n lo\u1ea1i, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n cho l\u1edbp thi\u1ec3u s\u1ed1.<\/p>\n<\/li>\n

    3. \n

      T\u00ednh kh\u00e1i qu\u00e1t<\/strong>: SMOTE c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho nhi\u1ec1u thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y kh\u00e1c nhau v\u00e0 kh\u00f4ng gi\u1edbi h\u1ea1n \u1edf b\u1ea5t k\u1ef3 lo\u1ea1i m\u00f4 h\u00ecnh c\u1ee5 th\u1ec3 n\u00e0o.<\/p>\n<\/li>\n

    4. \n

      Th\u1ef1c hi\u1ec7n d\u1ec5 d\u00e0ng<\/strong>: SMOTE d\u1ec5 tri\u1ec3n khai v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u00e0o quy tr\u00ecnh m\u00e1y h\u1ecdc hi\u1ec7n c\u00f3.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i SMOTE<\/h2>\n

      SMOTE c\u00f3 m\u1ed9t s\u1ed1 bi\u1ebfn th\u1ec3 v\u00e0 kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho c\u00e1c lo\u1ea1i b\u1ed9 d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng kh\u00e1c nhau. M\u1ed9t s\u1ed1 lo\u1ea1i SMOTE th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng bao g\u1ed3m:<\/p>\n

        \n
      1. \n

        SMOTE th\u01b0\u1eddng xuy\u00ean<\/strong>: \u0110\u00e2y l\u00e0 phi\u00ean b\u1ea3n ti\u00eau chu\u1ea9n c\u1ee7a SMOTE nh\u01b0 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 \u1edf tr\u00ean, t\u1ea1o ra c\u00e1c phi\u00ean b\u1ea3n t\u1ed5ng h\u1ee3p d\u1ecdc theo \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i phi\u00ean b\u1ea3n thi\u1ec3u s\u1ed1 v\u00e0 c\u00e1c phi\u00ean b\u1ea3n l\u00e2n c\u1eadn c\u1ee7a n\u00f3.<\/p>\n<\/li>\n

      2. \n

        \u0110\u01b0\u1eddng bi\u00ean gi\u1edbi NH\u1eb8<\/strong>: Bi\u1ebfn th\u1ec3 n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c t\u1ea1o c\u00e1c m\u1eabu t\u1ed5ng h\u1ee3p g\u1ea7n ranh gi\u1edbi gi\u1eefa c\u00e1c l\u1edbp thi\u1ec3u s\u1ed1 v\u00e0 \u0111a s\u1ed1, gi\u00fap n\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c t\u1eadp d\u1eef li\u1ec7u c\u00f3 c\u00e1c l\u1edbp ch\u1ed3ng ch\u00e9o.<\/p>\n<\/li>\n

      3. \n

        ADASYN (L\u1ea5y m\u1eabu t\u1ed5ng h\u1ee3p th\u00edch \u1ee9ng)<\/strong>: ADASYN c\u1ea3i thi\u1ec7n SMOTE b\u1eb1ng c\u00e1ch g\u00e1n t\u1ea7m quan tr\u1ecdng cao h\u01a1n cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p thi\u1ec3u s\u1ed1 kh\u00f3 h\u1ecdc h\u01a1n, d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng kh\u00e1i qu\u00e1t h\u00f3a t\u1ed1t h\u01a1n.<\/p>\n<\/li>\n

      4. \n

        SMOTEBoost<\/strong>: SMOTEBoost k\u1ebft h\u1ee3p SMOTE v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng \u0111\u1ec3 n\u00e2ng cao h\u01a1n n\u1eefa hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 ph\u00e2n lo\u1ea1i tr\u00ean c\u00e1c t\u1eadp d\u1eef li\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng.<\/p>\n<\/li>\n

      5. \n

        C\u1ea5p \u0111\u1ed9 an to\u00e0n SMOTE<\/strong>: Bi\u1ebfn th\u1ec3 n\u00e0y gi\u00fap gi\u1ea3m nguy c\u01a1 trang b\u1ecb qu\u00e1 m\u1ee9c b\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t s\u1ed1 l\u01b0\u1ee3ng m\u1eabu t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c t\u1ea1o ra d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 an to\u00e0n c\u1ee7a t\u1eebng phi\u00ean b\u1ea3n.<\/p>\n<\/li>\n<\/ol>\n

        D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh t\u00f3m t\u1eaft s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c bi\u1ebfn th\u1ec3 NH\u1ece n\u00e0y:<\/p>\n\n\n\n\n\n\n\n\n\n
        Bi\u1ebfn th\u1ec3 NH\u1ece<\/th>\nTi\u1ebfp c\u1eadn<\/th>\nT\u1eadp trung<\/th>\nKi\u1ec3m so\u00e1t trang b\u1ecb qu\u00e1 m\u1ee9c<\/th>\n<\/tr>\n<\/thead>\n
        SMOTE th\u01b0\u1eddng xuy\u00ean<\/td>\nPh\u00e9p n\u1ed9i suy tuy\u1ebfn t\u00ednh<\/td>\nkh\u00f4ng \u00e1p d\u1ee5ng<\/td>\nKH\u00d4NG<\/td>\n<\/tr>\n
        \u0110\u01b0\u1eddng bi\u00ean gi\u1edbi NH\u1eb8<\/td>\nN\u1ed9i suy phi tuy\u1ebfn t\u00ednh<\/td>\nG\u1ea7n ranh gi\u1edbi c\u1ee7a l\u1edbp h\u1ecdc<\/td>\nKH\u00d4NG<\/td>\n<\/tr>\n
        ADASYN<\/td>\nN\u1ed9i suy c\u00f3 tr\u1ecdng s\u1ed1<\/td>\nTr\u01b0\u1eddng h\u1ee3p thi\u1ec3u s\u1ed1 kh\u00f3 h\u1ecdc<\/td>\nKH\u00d4NG<\/td>\n<\/tr>\n
        SMOTEBoost<\/td>\nT\u0103ng t\u1ed1c + NH\u1eb8<\/td>\nkh\u00f4ng \u00e1p d\u1ee5ng<\/td>\n\u0110\u00fang<\/td>\n<\/tr>\n
        C\u1ea5p \u0111\u1ed9 an to\u00e0n SMOTE<\/td>\nPh\u00e9p n\u1ed9i suy tuy\u1ebfn t\u00ednh<\/td>\nC\u0103n c\u1ee9 v\u00e0o m\u1ee9c \u0111\u1ed9 an to\u00e0n<\/td>\n\u0110\u00fang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        C\u00e1ch s\u1eed d\u1ee5ng SMOTE, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n

        C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng SMOTE<\/h3>\n

        SMOTE c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng theo nhi\u1ec1u c\u00e1ch \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c m\u00f4 h\u00ecnh h\u1ecdc m\u00e1y tr\u00ean c\u00e1c t\u1eadp d\u1eef li\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng:<\/p>\n

          \n
        1. \n

          S\u01a1 ch\u1ebf<\/strong>: \u00c1p d\u1ee5ng SMOTE \u0111\u1ec3 c\u00e2n b\u1eb1ng ph\u00e2n b\u1ed1 l\u1edbp tr\u01b0\u1edbc khi hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh.<\/p>\n<\/li>\n

        2. \n

          K\u1ef9 thu\u1eadt h\u00f2a t\u1ea5u<\/strong>: K\u1ebft h\u1ee3p SMOTE v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p nh\u01b0 R\u1eebng ng\u1eabu nhi\u00ean ho\u1eb7c T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ed1c \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n.<\/p>\n<\/li>\n

        3. \n

          H\u1ecdc m\u1ed9t l\u1edbp<\/strong>: S\u1eed d\u1ee5ng SMOTE \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng d\u1eef li\u1ec7u m\u1ed9t l\u1edbp cho c\u00e1c nhi\u1ec7m v\u1ee5 h\u1ecdc t\u1eadp kh\u00f4ng gi\u00e1m s\u00e1t.<\/p>\n<\/li>\n<\/ol>\n

          V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h3>\n

          M\u1eb7c d\u00f9 SMOTE l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng nh\u01b0ng n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 kh\u00f4ng c\u00f3 nh\u1eefng th\u00e1ch th\u1ee9c:<\/p>\n

            \n
          1. \n

            Trang b\u1ecb qu\u00e1 m\u1ee9c<\/strong>: Vi\u1ec7c t\u1ea1o ra qu\u00e1 nhi\u1ec1u phi\u00ean b\u1ea3n t\u1ed5ng h\u1ee3p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng trang b\u1ecb qu\u00e1 m\u1ee9c, khi\u1ebfn m\u00f4 h\u00ecnh ho\u1ea1t \u0111\u1ed9ng k\u00e9m tr\u00ean d\u1eef li\u1ec7u kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c. Vi\u1ec7c s\u1eed d\u1ee5ng SMOTE c\u1ea5p \u0111\u1ed9 an to\u00e0n ho\u1eb7c ADASYN c\u00f3 th\u1ec3 gi\u00fap ki\u1ec3m so\u00e1t vi\u1ec7c trang b\u1ecb qu\u00e1 m\u1ee9c.<\/p>\n<\/li>\n

          2. \n

            L\u1eddi nguy\u1ec1n c\u1ee7a chi\u1ec1u<\/strong>: Hi\u1ec7u qu\u1ea3 c\u1ee7a SMOTE c\u00f3 th\u1ec3 gi\u1ea3m \u0111i trong kh\u00f4ng gian t\u00ednh n\u0103ng nhi\u1ec1u chi\u1ec1u do t\u00ednh th\u01b0a th\u1edbt c\u1ee7a d\u1eef li\u1ec7u. K\u1ef9 thu\u1eadt l\u1ef1a ch\u1ecdn t\u00ednh n\u0103ng ho\u1eb7c gi\u1ea3m k\u00edch th\u01b0\u1edbc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<\/li>\n

          3. \n

            Khu\u1ebfch \u0111\u1ea1i ti\u1ebfng \u1ed3n<\/strong>: SMOTE c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c phi\u00ean b\u1ea3n t\u1ed5ng h\u1ee3p nhi\u1ec5u n\u1ebfu d\u1eef li\u1ec7u g\u1ed1c ch\u1ee9a c\u00e1c gi\u00e1 tr\u1ecb ngo\u1ea1i l\u1ec7. C\u00e1c k\u1ef9 thu\u1eadt lo\u1ea1i b\u1ecf ngo\u1ea1i l\u1ec7 ho\u1eb7c tri\u1ec3n khai SMOTE \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<\/li>\n<\/ol>\n

            C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n\n\n\n\n\n\n\n\n\n\n
            \u0110\u1eb7c tr\u01b0ng<\/th>\nNH\u1eb8<\/th>\nADASYN<\/th>\nL\u1ea5y m\u1eabu ng\u1eabu nhi\u00ean<\/th>\n<\/tr>\n<\/thead>\n
            Ki\u1ec3u<\/td>\nT\u0103ng c\u01b0\u1eddng d\u1eef li\u1ec7u<\/td>\nT\u0103ng c\u01b0\u1eddng d\u1eef li\u1ec7u<\/td>\nT\u0103ng c\u01b0\u1eddng d\u1eef li\u1ec7u<\/td>\n<\/tr>\n
            Ngu\u1ed3n m\u1eabu t\u1ed5ng h\u1ee3p<\/td>\nH\u00e0ng x\u00f3m g\u1ea7n nh\u1ea5t<\/td>\nD\u1ef1a tr\u00ean s\u1ef1 t\u01b0\u01a1ng \u0111\u1ed3ng<\/td>\nSao ch\u00e9p c\u00e1c tr\u01b0\u1eddng h\u1ee3p<\/td>\n<\/tr>\n
            Ki\u1ec3m so\u00e1t trang b\u1ecb qu\u00e1 m\u1ee9c<\/td>\nKH\u00d4NG<\/td>\n\u0110\u00fang<\/td>\nKH\u00d4NG<\/td>\n<\/tr>\n
            X\u1eed l\u00fd d\u1eef li\u1ec7u \u1ed3n \u00e0o<\/td>\n\u0110\u00fang<\/td>\n\u0110\u00fang<\/td>\nKH\u00d4NG<\/td>\n<\/tr>\n
            \u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/td>\nTh\u1ea5p<\/td>\nV\u1eeba ph\u1ea3i<\/td>\nTh\u1ea5p<\/td>\n<\/tr>\n
            Hi\u1ec7u su\u1ea5t<\/td>\nT\u1ed1t<\/td>\nT\u1ed1t h\u01a1n<\/td>\nKh\u00e1c nhau<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn SMOTE<\/h2>\n

            T\u01b0\u01a1ng lai c\u1ee7a SMOTE v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng trong h\u1ecdc m\u00e1y r\u1ea5t h\u1ee9a h\u1eb9n. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 ng\u01b0\u1eddi th\u1ef1c h\u00e0nh ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n v\u00e0 c\u1ea3i ti\u1ebfn c\u00e1c k\u1ef9 thu\u1eadt hi\u1ec7n c\u00f3 nh\u1eb1m gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c do c\u00e1c b\u1ed9 d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng \u0111\u1eb7t ra m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 h\u01a1n. M\u1ed9t s\u1ed1 h\u01b0\u1edbng \u0111i ti\u1ec1m n\u0103ng trong t\u01b0\u01a1ng lai bao g\u1ed3m:<\/p>\n

              \n
            1. \n

              Ti\u1ec7n \u00edch m\u1edf r\u1ed9ng h\u1ecdc t\u1eadp s\u00e2u<\/strong>: Kh\u00e1m ph\u00e1 c\u00e1c c\u00e1ch t\u00edch h\u1ee3p c\u00e1c k\u1ef9 thu\u1eadt gi\u1ed1ng SMOTE v\u00e0o ki\u1ebfn tr\u00fac h\u1ecdc s\u00e2u \u0111\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng trong c\u00e1c t\u00e1c v\u1ee5 ph\u1ee9c t\u1ea1p.<\/p>\n<\/li>\n

            2. \n

              T\u00edch h\u1ee3p AutoML<\/strong>: T\u00edch h\u1ee3p SMOTE v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 H\u1ecdc m\u00e1y t\u1ef1 \u0111\u1ed9ng (AutoML) \u0111\u1ec3 cho ph\u00e9p x\u1eed l\u00fd tr\u01b0\u1edbc d\u1eef li\u1ec7u t\u1ef1 \u0111\u1ed9ng cho c\u00e1c b\u1ed9 d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng.<\/p>\n<\/li>\n

            3. \n

              Th\u00edch \u1ee9ng theo mi\u1ec1n c\u1ee5 th\u1ec3<\/strong>: \u0110i\u1ec1u ch\u1ec9nh c\u00e1c bi\u1ebfn th\u1ec3 SMOTE cho c\u00e1c l\u0129nh v\u1ef1c c\u1ee5 th\u1ec3 nh\u01b0 ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe, t\u00e0i ch\u00ednh ho\u1eb7c x\u1eed l\u00fd ng\u00f4n ng\u1eef t\u1ef1 nhi\u00ean \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t m\u00f4 h\u00ecnh trong c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean bi\u1ec7t.<\/p>\n<\/li>\n<\/ol>\n

              C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi SMOTE<\/h2>\n

              M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong SMOTE. M\u1ed9t s\u1ed1 c\u00e1ch c\u00f3 th\u1ec3 li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi SMOTE bao g\u1ed3m:<\/p>\n

                \n
              1. \n

                \u1ea8n danh d\u1eef li\u1ec7u<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u1ea9n danh d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m tr\u01b0\u1edbc khi \u00e1p d\u1ee5ng SMOTE, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c phi\u00ean b\u1ea3n t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c t\u1ea1o kh\u00f4ng ti\u1ebft l\u1ed9 th\u00f4ng tin c\u00e1 nh\u00e2n.<\/p>\n<\/li>\n

              2. \n

                Ph\u00e2n ph\u1ed1i m\u00e1y t\u00ednh<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 t\u00ednh to\u00e1n ph\u00e2n t\u00e1n \u0111\u1ec3 tri\u1ec3n khai SMOTE tr\u00ean nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m, cho ph\u00e9p x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c b\u1ed9 d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn.<\/p>\n<\/li>\n

              3. \n

                Thu th\u1eadp d\u1eef li\u1ec7u<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u \u0111a d\u1ea1ng t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau, g\u00f3p ph\u1ea7n t\u1ea1o ra nhi\u1ec1u b\u1ed9 d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n h\u01a1n cho SMOTE.<\/p>\n<\/li>\n<\/ol>\n

                Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

                \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 SMOTE v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt li\u00ean quan, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

                  \n
                1. Gi\u1ea5y SMOTE g\u1ed1c<\/a><\/li>\n
                2. ADASYN: Ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu t\u1ed5ng h\u1ee3p th\u00edch \u1ee9ng cho vi\u1ec7c h\u1ecdc kh\u00f4ng c\u00e2n b\u1eb1ng<\/a><\/li>\n
                3. SMOTEBoost: C\u1ea3i thi\u1ec7n d\u1ef1 \u0111o\u00e1n v\u1ec1 t\u1ea7ng l\u1edbp thi\u1ec3u s\u1ed1 trong vi\u1ec7c t\u0103ng c\u01b0\u1eddng<\/a><\/li>\n
                4. Borderline-SMOTE: M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu qu\u00e1 m\u1ee9c m\u1edbi trong vi\u1ec7c h\u1ecdc t\u1eadp d\u1eef li\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng<\/a><\/li>\n
                5. SMOTE c\u1ea5p \u0111\u1ed9 an to\u00e0n: K\u1ef9 thu\u1eadt l\u1ea5y m\u1eabu qu\u00e1 m\u1ee9c t\u1ed5ng h\u1ee3p thi\u1ec3u s\u1ed1 \u1edf c\u1ea5p \u0111\u1ed9 an to\u00e0n \u0111\u1ec3 x\u1eed l\u00fd v\u1ea5n \u0111\u1ec1 m\u1ea5t c\u00e2n b\u1eb1ng l\u1edbp<\/a><\/li>\n<\/ol>\n

                  T\u00f3m l\u1ea1i, SMOTE l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong h\u1ed9p c\u00f4ng c\u1ee5 h\u1ecdc m\u00e1y nh\u1eb1m gi\u1ea3i quy\u1ebft c\u00e1c th\u00e1ch th\u1ee9c c\u1ee7a c\u00e1c b\u1ed9 d\u1eef li\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng. B\u1eb1ng c\u00e1ch t\u1ea1o ra c\u00e1c phi\u00ean b\u1ea3n t\u1ed5ng h\u1ee3p cho l\u1edbp thi\u1ec3u s\u1ed1, SMOTE n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c b\u1ed9 ph\u00e2n lo\u1ea1i v\u00e0 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng kh\u00e1i qu\u00e1t h\u00f3a t\u1ed1t h\u01a1n. Kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng, d\u1ec5 th\u1ef1c hi\u1ec7n v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3 l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t k\u1ef9 thu\u1eadt kh\u00f4ng th\u1ec3 thi\u1ebfu trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau. V\u1edbi nh\u1eefng ti\u1ebfn b\u1ed9 c\u00f4ng ngh\u1ec7 v\u00e0 nghi\u00ean c\u1ee9u kh\u00f4ng ng\u1eebng, t\u01b0\u01a1ng lai c\u00f3 nhi\u1ec1u tri\u1ec3n v\u1ecdng th\u00fa v\u1ecb cho SMOTE v\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3 trong s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a h\u1ecdc m\u00e1y.<\/p>","protected":false},"featured_media":470514,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479036","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about SMOTE: Synthetic Minority Over-sampling Technique<\/mark>","faq_items":[{"question":"What is SMOTE?","answer":"

                  SMOTE stands for Synthetic Minority Over-sampling Technique. It is a data augmentation method used in machine learning to address imbalanced datasets. By generating synthetic samples of the minority class, SMOTE balances the class distribution and improves model performance.<\/p>"},{"question":"How was SMOTE developed?","answer":"

                  SMOTE was introduced in a seminal research paper titled \"SMOTE: Synthetic Minority Over-sampling Technique\" by Nitesh V. Chawla, Kevin W. Bowyer, Lawrence O. Hall, and W. Philip Kegelmeyer in 2002.<\/p>"},{"question":"How does SMOTE work?","answer":"

                  SMOTE works by creating synthetic instances of the minority class by interpolating between existing minority instances and their nearest neighbors. These synthetic samples help balance the class distribution and reduce bias in the model.<\/p>"},{"question":"What are the key features of SMOTE?","answer":"

                  The key features of SMOTE include data augmentation, bias reduction, generalizability, and easy implementation.<\/p>"},{"question":"What types of SMOTE variants are there?","answer":"

                  Several SMOTE variants exist, including Regular SMOTE, Borderline SMOTE, ADASYN, SMOTEBoost, and Safe-Level SMOTE. Each variant has its own specific approach and focus.<\/p>"},{"question":"How can I use SMOTE?","answer":"

                  SMOTE can be used in various ways, such as preprocessing, ensemble techniques, and one-class learning, to improve model performance on imbalanced datasets.<\/p>"},{"question":"What problems can arise when using SMOTE?","answer":"

                  Potential issues with SMOTE include overfitting, curse of dimensionality in high-dimensional spaces, and noise amplification. However, there are solutions and adaptations to address these problems.<\/p>"},{"question":"How does SMOTE compare to other data augmentation methods?","answer":"

                  SMOTE can be compared to ADASYN and Random Oversampling. Each method has its own characteristics, complexity, and performance.<\/p>"},{"question":"What is the future outlook for SMOTE in machine learning?","answer":"

                  The future of SMOTE looks promising, with potential advancements in deep learning extensions, AutoML integration, and domain-specific adaptations.<\/p>"},{"question":"How can proxy servers be associated with SMOTE?","answer":"

                  Proxy servers can play a role in anonymizing data, facilitating distributed computing, and collecting diverse data for SMOTE applications. They can enhance the privacy and performance of SMOTE implementations.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479036\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/470514"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=479036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}