{"id":479722,"date":"2023-08-09T10:43:48","date_gmt":"2023-08-09T10:43:48","guid":{"rendered":""},"modified":"2023-09-05T11:19:26","modified_gmt":"2023-09-05T11:19:26","slug":"xgboost","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/xgboost\/","title":{"rendered":"XGBoost"},"content":{"rendered":"<p>XGBoost, vi\u1ebft t\u1eaft c\u1ee7a Extreme gradient Boosting, l\u00e0 m\u1ed9t thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y ti\u00ean ti\u1ebfn \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a l\u0129nh v\u1ef1c m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u. N\u00f3 thu\u1ed9c danh m\u1ee5c thu\u1eadt to\u00e1n t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ed1c, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau cho c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 h\u1ed3i quy, ph\u00e2n lo\u1ea1i v\u00e0 x\u1ebfp h\u1ea1ng. \u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 kh\u1eafc ph\u1ee5c nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng truy\u1ec1n th\u1ed1ng, XGBoost k\u1ebft h\u1ee3p c\u00e1c \u0111i\u1ec3m m\u1ea1nh c\u1ee7a k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ed1c v\u00e0 ch\u00ednh quy h\u00f3a \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 ch\u00ednh x\u00e1c d\u1ef1 \u0111o\u00e1n v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a XGBoost<\/h2>\n<p>H\u00e0nh tr\u00ecnh c\u1ee7a XGBoost b\u1eaft \u0111\u1ea7u v\u00e0o n\u0103m 2014 khi Tianqi Chen, nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i \u0110\u1ea1i h\u1ecdc Washington, ph\u00e1t tri\u1ec3n thu\u1eadt to\u00e1n n\u00e0y nh\u01b0 m\u1ed9t d\u1ef1 \u00e1n ngu\u1ed3n m\u1edf. L\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn XGBoost l\u00e0 th\u00f4ng qua m\u1ed9t b\u00e0i nghi\u00ean c\u1ee9u c\u00f3 ti\u00eau \u0111\u1ec1 \u201cXGBoost: H\u1ec7 th\u1ed1ng t\u0103ng c\u01b0\u1eddng c\u00e2y c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng\u201d, \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y t\u1ea1i h\u1ed9i ngh\u1ecb ACM SIGKDD 2016. B\u00e0i vi\u1ebft \u0111\u00e3 gi\u1edbi thi\u1ec7u hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a thu\u1eadt to\u00e1n trong c\u00e1c cu\u1ed9c thi h\u1ecdc m\u00e1y kh\u00e1c nhau v\u00e0 n\u00eau b\u1eadt kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u00e1c t\u1eadp d\u1eef li\u1ec7u l\u1edbn m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 XGBoost<\/h2>\n<p>Th\u00e0nh c\u00f4ng c\u1ee7a XGBoost c\u00f3 th\u1ec3 l\u00e0 nh\u1edd s\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed9c \u0111\u00e1o gi\u1eefa c\u00e1c k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng v\u00e0 ch\u00ednh quy h\u00f3a. N\u00f3 s\u1eed d\u1ee5ng m\u1ed9t quy tr\u00ecnh \u0111\u00e0o t\u1ea1o tu\u1ea7n t\u1ef1 trong \u0111\u00f3 nh\u1eefng ng\u01b0\u1eddi h\u1ecdc y\u1ebfu (th\u01b0\u1eddng l\u00e0 c\u00e2y quy\u1ebft \u0111\u1ecbnh) \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o tu\u1ea7n t\u1ef1, v\u1edbi m\u1ed7i ng\u01b0\u1eddi h\u1ecdc m\u1edbi nh\u1eb1m m\u1ee5c \u0111\u00edch s\u1eeda l\u1ed7i c\u1ee7a nh\u1eefng ng\u01b0\u1eddi tr\u01b0\u1edbc \u0111\u00f3. H\u01a1n n\u1eefa, XGBoost k\u1ebft h\u1ee3p c\u00e1c thu\u1eadt ng\u1eef ch\u00ednh quy h\u00f3a \u0111\u1ec3 ki\u1ec3m so\u00e1t \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a m\u00f4 h\u00ecnh v\u00e0 ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng trang b\u1ecb qu\u00e1 m\u1ee9c. C\u00e1ch ti\u1ebfp c\u1eadn k\u00e9p n\u00e0y kh\u00f4ng ch\u1ec9 n\u00e2ng cao \u0111\u1ed9 ch\u00ednh x\u00e1c d\u1ef1 \u0111o\u00e1n m\u00e0 c\u00f2n gi\u1ea3m thi\u1ec3u nguy c\u01a1 trang b\u1ecb qu\u00e1 m\u1ee9c.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a XGBoost<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a XGBoost c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh sau:<\/p>\n<ol>\n<li>\n<p><strong>H\u00e0m m\u1ee5c ti\u00eau:<\/strong> XGBoost x\u00e1c \u0111\u1ecbnh h\u00e0m m\u1ee5c ti\u00eau c\u1ea7n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a trong qu\u00e1 tr\u00ecnh \u0111\u00e0o t\u1ea1o. C\u00e1c m\u1ee5c ti\u00eau chung bao g\u1ed3m c\u00e1c nhi\u1ec7m v\u1ee5 h\u1ed3i quy (v\u00ed d\u1ee5: sai s\u1ed1 b\u00ecnh ph\u01b0\u01a1ng trung b\u00ecnh) v\u00e0 c\u00e1c nhi\u1ec7m v\u1ee5 ph\u00e2n lo\u1ea1i (v\u00ed d\u1ee5: m\u1ea5t nh\u1eadt k\u00fd).<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ecdc sinh y\u1ebfu:<\/strong> XGBoost s\u1eed d\u1ee5ng c\u00e2y quy\u1ebft \u0111\u1ecbnh cho nh\u1eefng ng\u01b0\u1eddi h\u1ecdc y\u1ebfu. Nh\u1eefng c\u00e2y n\u00e0y n\u00f4ng, c\u00f3 \u0111\u1ed9 s\u00e2u h\u1ea1n ch\u1ebf, gi\u00fap gi\u1ea3m nguy c\u01a1 trang b\u1ecb qu\u00e1 m\u1ee9c.<\/p>\n<\/li>\n<li>\n<p><strong>T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ed1c:<\/strong> XGBoost s\u1eed d\u1ee5ng t\u00ednh n\u0103ng t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ed1c, trong \u0111\u00f3 m\u1ed7i c\u00e2y m\u1edbi \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u0111\u1ed9 d\u1ed1c c\u1ee7a h\u00e0m m\u1ea5t m\u00e1t so v\u1edbi d\u1ef1 \u0111o\u00e1n c\u1ee7a c\u00e1c c\u00e2y tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n<\/li>\n<li>\n<p><strong>Ch\u00ednh quy:<\/strong> C\u00e1c thu\u1eadt ng\u1eef ch\u00ednh quy h\u00f3a \u0111\u01b0\u1ee3c th\u00eam v\u00e0o h\u00e0m m\u1ee5c ti\u00eau \u0111\u1ec3 ki\u1ec3m so\u00e1t \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a m\u00f4 h\u00ecnh. \u0110i\u1ec1u n\u00e0y ng\u0103n c\u1ea3n thu\u1eadt to\u00e1n \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec5u trong d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<li>\n<p><strong>T\u1ec9a c\u00e2y:<\/strong> XGBoost k\u1ebft h\u1ee3p b\u01b0\u1edbc c\u1eaft t\u1ec9a gi\u00fap lo\u1ea1i b\u1ecf c\u00e1c c\u00e0nh kh\u1ecfi c\u00e2y trong qu\u00e1 tr\u00ecnh hu\u1ea5n luy\u1ec7n, n\u00e2ng cao h\u01a1n n\u1eefa kh\u1ea3 n\u0103ng kh\u00e1i qu\u00e1t h\u00f3a m\u00f4 h\u00ecnh.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a XGBoost<\/h2>\n<p>XGBoost t\u1ef1 h\u00e0o c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh g\u00f3p ph\u1ea7n t\u1ea1o n\u00ean t\u00ednh \u01b0u vi\u1ec7t c\u1ee7a n\u00f3 trong m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n:<\/p>\n<ol>\n<li>\n<p><strong>Hi\u1ec7u su\u1ea5t cao:<\/strong> XGBoost \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 mang l\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. N\u00f3 c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c t\u1eadp d\u1eef li\u1ec7u l\u1edbn v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh song song \u0111\u1ec3 t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh \u0111\u00e0o t\u1ea1o.<\/p>\n<\/li>\n<li>\n<p><strong>Uy\u1ec3n chuy\u1ec3n:<\/strong> Thu\u1eadt to\u00e1n h\u1ed7 tr\u1ee3 c\u00e1c m\u1ee5c ti\u00eau v\u00e0 s\u1ed1 li\u1ec7u \u0111\u00e1nh gi\u00e1 kh\u00e1c nhau, gi\u00fap thu\u1eadt to\u00e1n c\u00f3 th\u1ec3 th\u00edch \u1ee9ng v\u1edbi c\u00e1c nhi\u1ec7m v\u1ee5 kh\u00e1c nhau.<\/p>\n<\/li>\n<li>\n<p><strong>Ch\u00ednh quy:<\/strong> C\u00e1c k\u1ef9 thu\u1eadt ch\u00ednh quy h\u00f3a c\u1ee7a XGBoost gi\u00fap ng\u0103n ch\u1eb7n vi\u1ec7c trang b\u1ecb qu\u00e1 m\u1ee9c, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng kh\u00e1i qu\u00e1t h\u00f3a m\u00f4 h\u00ecnh \u0111\u00e1ng tin c\u1eady.<\/p>\n<\/li>\n<li>\n<p><strong>T\u1ea7m quan tr\u1ecdng c\u1ee7a t\u00ednh n\u0103ng:<\/strong> XGBoost cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a t\u00ednh n\u0103ng, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng hi\u1ec3u c\u00e1c bi\u1ebfn s\u1ed1 th\u00fac \u0111\u1ea9y d\u1ef1 \u0111o\u00e1n.<\/p>\n<\/li>\n<li>\n<p><strong>X\u1eed l\u00fd d\u1eef li\u1ec7u b\u1ecb thi\u1ebfu:<\/strong> XGBoost c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng x\u1eed l\u00fd d\u1eef li\u1ec7u b\u1ecb thi\u1ebfu trong qu\u00e1 tr\u00ecnh \u0111\u00e0o t\u1ea1o v\u00e0 d\u1ef1 \u0111o\u00e1n, gi\u1ea3m n\u1ed7 l\u1ef1c ti\u1ec1n x\u1eed l\u00fd.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i XGBoost<\/h2>\n<p>XGBoost c\u00f3 nhi\u1ec1u bi\u1ebfn th\u1ec3 kh\u00e1c nhau ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00e1c v\u1ee5 c\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li><strong>H\u1ed3i quy XGBoost:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n c\u00e1c gi\u00e1 tr\u1ecb s\u1ed1 li\u00ean t\u1ee5c.<\/li>\n<li><strong>Ph\u00e2n lo\u1ea1i XGBoost:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c nhi\u1ec7m v\u1ee5 ph\u00e2n lo\u1ea1i nh\u1ecb ph\u00e2n v\u00e0 \u0111a l\u1edbp.<\/li>\n<li><strong>X\u1ebfp h\u1ea1ng XGBoost:<\/strong> \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1ebfp h\u1ea1ng c\u00e1c nhi\u1ec7m v\u1ee5 trong \u0111\u00f3 m\u1ee5c ti\u00eau l\u00e0 s\u1eafp x\u1ebfp c\u00e1c tr\u01b0\u1eddng h\u1ee3p theo m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng.<\/li>\n<\/ul>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t b\u1ea3n t\u00f3m t\u1eaft \u1edf d\u1ea1ng b\u1ea3ng:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>H\u1ed3i quy XGBoost<\/td>\n<td>D\u1ef1 \u0111o\u00e1n c\u00e1c gi\u00e1 tr\u1ecb s\u1ed1 li\u00ean t\u1ee5c.<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00e2n lo\u1ea1i XGBoost<\/td>\n<td>X\u1eed l\u00fd ph\u00e2n lo\u1ea1i nh\u1ecb ph\u00e2n v\u00e0 \u0111a l\u1edbp.<\/td>\n<\/tr>\n<tr>\n<td>X\u1ebfp h\u1ea1ng XGBoost<\/td>\n<td>X\u1ebfp h\u1ea1ng c\u00e1c tr\u01b0\u1eddng h\u1ee3p theo t\u1ea7m quan tr\u1ecdng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng XGBoost, v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>XGBoost t\u00ecm th\u1ea5y c\u00e1c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, bao g\u1ed3m t\u00e0i ch\u00ednh, ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe, ti\u1ebfp th\u1ecb, v.v. Tuy nhi\u00ean, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i nh\u1eefng th\u00e1ch th\u1ee9c nh\u01b0 \u0111i\u1ec1u ch\u1ec9nh tham s\u1ed1 v\u00e0 d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt nh\u01b0 x\u00e1c th\u1ef1c ch\u00e9o v\u00e0 t\u1ed1i \u01b0u h\u00f3a si\u00eau tham s\u1ed1 c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<h2>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh nhanh v\u1ec1 XGBoost v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0111\u1eb7c tr\u01b0ng<\/th>\n<th>XGBoost<\/th>\n<th>R\u1eebng ng\u1eabu nhi\u00ean<\/th>\n<th>\u00c1nh s\u00e1ngGBM<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>K\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng<\/td>\n<td>T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ed1c<\/td>\n<td>\u0110\u00f3ng bao<\/td>\n<td>T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u1ed1c<\/td>\n<\/tr>\n<tr>\n<td>Ch\u00ednh quy<\/td>\n<td>C\u00f3 (L1 v\u00e0 L2)<\/td>\n<td>KH\u00d4NG<\/td>\n<td>C\u00f3 (D\u1ef1a tr\u00ean bi\u1ec3u \u0111\u1ed3)<\/td>\n<\/tr>\n<tr>\n<td>Thi\u1ebfu x\u1eed l\u00fd d\u1eef li\u1ec7u<\/td>\n<td>C\u00f3 (T\u1ef1 \u0111\u1ed9ng)<\/td>\n<td>Kh\u00f4ng (Y\u00eau c\u1ea7u x\u1eed l\u00fd tr\u01b0\u1edbc)<\/td>\n<td>C\u00f3 (T\u1ef1 \u0111\u1ed9ng)<\/td>\n<\/tr>\n<tr>\n<td>Hi\u1ec7u su\u1ea5t<\/td>\n<td>Cao<\/td>\n<td>V\u1eeba ph\u1ea3i<\/td>\n<td>Cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a XGBoost c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng th\u00fa v\u1ecb. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n \u0111ang li\u00ean t\u1ee5c c\u1ea3i ti\u1ebfn thu\u1eadt to\u00e1n v\u00e0 kh\u00e1m ph\u00e1 c\u00e1c k\u1ef9 thu\u1eadt m\u1edbi \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3. C\u00e1c l\u0129nh v\u1ef1c ph\u00e1t tri\u1ec3n ti\u1ec1m n\u0103ng bao g\u1ed3m song song h\u00f3a hi\u1ec7u qu\u1ea3 h\u01a1n, t\u00edch h\u1ee3p v\u1edbi c\u00e1c khung h\u1ecdc s\u00e2u v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u00e1c t\u00ednh n\u0103ng ph\u00e2n lo\u1ea1i.<\/p>\n<h2>M\u00e1y ch\u1ee7 XGBoost v\u00e0 Proxy<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m qu\u00e9t web, \u1ea9n danh d\u1eef li\u1ec7u v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 tr\u1ef1c tuy\u1ebfn. XGBoost c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i gi\u00e1n ti\u1ebfp t\u1eeb m\u00e1y ch\u1ee7 proxy b\u1eb1ng c\u00e1ch cho ph\u00e9p thu th\u1eadp d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi x\u1eed l\u00fd c\u00e1c API c\u00f3 gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9. Xoay v\u00f2ng proxy c\u00f3 th\u1ec3 gi\u00fap ph\u00e2n ph\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u c\u00e1c y\u00eau c\u1ea7u, ng\u0103n ch\u1eb7n c\u00e1c l\u1ec7nh c\u1ea5m IP v\u00e0 \u0111\u1ea3m b\u1ea3o lu\u1ed3ng d\u1eef li\u1ec7u \u1ed5n \u0111\u1ecbnh cho vi\u1ec7c \u0111\u00e0o t\u1ea1o v\u00e0 th\u1eed nghi\u1ec7m c\u00e1c m\u00f4 h\u00ecnh XGBoost.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 XGBoost, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li><a href=\"https:\/\/xgboost.readthedocs.io\/en\/latest\/\" target=\"_new\" rel=\"noopener nofollow\">T\u00e0i li\u1ec7u XGBoost<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dmlc\/xgboost\" target=\"_new\" rel=\"noopener nofollow\">Kho l\u01b0u tr\u1eef XGBoost GitHub<\/a><\/li>\n<li><a href=\"https:\/\/homes.cs.washington.edu\/~tqchen\/pdf\/BoostedTree.pdf\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1edbi thi\u1ec7u v\u1ec1 XGBoost c\u1ee7a Tianqi Chen<\/a><\/li>\n<\/ul>\n<p>XGBoost ti\u1ebfp t\u1ee5c l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd trong kho v\u0169 kh\u00ed c\u1ee7a nh\u1eefng ng\u01b0\u1eddi th\u1ef1c h\u00e0nh h\u1ecdc m\u00e1y, cung c\u1ea5p nh\u1eefng d\u1ef1 \u0111o\u00e1n ch\u00ednh x\u00e1c v\u00e0 nh\u1eefng hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc c\u00f3 gi\u00e1 tr\u1ecb tr\u00ean nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau. S\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed9c \u0111\u00e1o gi\u1eefa c\u00e1c k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng v\u00e0 ch\u00ednh quy h\u00f3a c\u1ee7a n\u00f3 \u0111\u1ea3m b\u1ea3o t\u00ednh m\u1ea1nh m\u1ebd v\u00e0 ch\u00ednh x\u00e1c, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a khoa h\u1ecdc d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i.<\/p>","protected":false},"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479722","wiki","type-wiki","status-publish","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>XGBoost: Enhancing Predictive Power with Extreme Gradient Boosting<\/mark>","faq_items":[{"question":"What is XGBoost and how does it work?","answer":"<p>XGBoost, or Extreme Gradient Boosting, is a state-of-the-art machine learning algorithm that combines gradient boosting and regularization techniques. It sequentially trains weak learners (often decision trees) to correct errors made by previous learners, enhancing predictive accuracy. Regularization is employed to prevent overfitting, resulting in robust and accurate models.<\/p>"},{"question":"How did XGBoost originate?","answer":"<p>XGBoost was developed by Tianqi Chen in 2014 and gained recognition through a research paper presented in 2016. This paper, titled \"XGBoost: A Scalable Tree Boosting System,\" highlighted the algorithm's exceptional performance in machine learning competitions and its ability to handle large datasets effectively.<\/p>"},{"question":"What are the key features of XGBoost?","answer":"<p>XGBoost boasts high performance, scalability, and flexibility. It utilizes shallow decision trees as weak learners and employs gradient boosting to optimize the objective function. Regularization techniques control model complexity, and the algorithm provides insights into feature importance. It can handle missing data and is applicable to various tasks like regression, classification, and ranking.<\/p>"},{"question":"How does XGBoost compare with other algorithms like Random Forests and LightGBM?","answer":"<p>In comparison with Random Forests and LightGBM, XGBoost uses gradient boosting, supports L1 and L2 regularization, and can handle missing data automatically. It generally exhibits higher performance and flexibility, making it a preferred choice in many scenarios.<\/p>"},{"question":"What types of XGBoost are available?","answer":"<p>XGBoost comes in three main types:<\/p><ul><li>XGBoost Regression: Predicts continuous numerical values.<\/li><li>XGBoost Classification: Handles binary and multiclass classification tasks.<\/li><li>XGBoost Ranking: Ranks instances by importance.<\/li><\/ul>"},{"question":"How can proxy servers be associated with XGBoost?","answer":"<p>Proxy servers can indirectly benefit XGBoost by enabling efficient data collection, particularly when dealing with APIs that have rate limits. Proxy rotation can help distribute requests evenly, preventing IP bans and ensuring a consistent stream of data for training and testing XGBoost models.<\/p>"},{"question":"What are the future prospects of XGBoost?","answer":"<p>The future of XGBoost holds promise in areas like improved parallelization, integration with deep learning frameworks, and enhanced handling of categorical features. Ongoing research and development are likely to lead to further advancements and applications.<\/p>"},{"question":"Where can I find more information about XGBoost?","answer":"<p>For more information about XGBoost, you can explore the following resources:<\/p><ul><li><a href=\"https:\/\/xgboost.readthedocs.io\/en\/latest\/\" target=\"_new\">XGBoost Documentation<\/a><\/li><li><a href=\"https:\/\/github.com\/dmlc\/xgboost\" target=\"_new\">XGBoost GitHub Repository<\/a><\/li><li><a href=\"https:\/\/homes.cs.washington.edu\/~tqchen\/pdf\/BoostedTree.pdf\" target=\"_new\">Introduction to XGBoost by Tianqi Chen<\/a><\/li><\/ul>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479722","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\/479722\/revisions"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=479722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}