{"id":26821,"date":"2025-04-10T09:18:04","date_gmt":"2025-04-10T02:18:04","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=26821"},"modified":"2025-04-10T09:18:04","modified_gmt":"2025-04-10T02:18:04","slug":"stacking-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/stacking-la-gi\/","title":{"rendered":"Stacking l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u v\u1ec1 Stacking trong Machine Learning"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/stacking-la-gi\/#Stacking-la-gi\" >Stacking l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/stacking-la-gi\/#Tai-sao-Stacking-lai-quan-trong\" >T\u1ea1i sao Stacking l\u1ea1i quan tr\u1ecdng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/stacking-la-gi\/#Kien-truc-cua-mot-mo-hinh-Stacking\" >Ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t m\u00f4 h\u00ecnh Stacking<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/stacking-la-gi\/#Cach-hoat-dong-cua-Stacking\" >C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Stacking\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/stacking-la-gi\/#Cac-ky-thuat-ensemble-pho-bien-lien-quan-den-Stacking\" >C\u00e1c k\u1ef9 thu\u1eadt ensemble ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn Stacking<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/stacking-la-gi\/#Cac-buoc-trien-khai-mo-hinh-Stacking\" >C\u00e1c b\u01b0\u1edbc tri\u1ec3n khai m\u00f4 h\u00ecnh Stacking<\/a><\/li><\/ul><\/nav><\/div>\n<p>Trong h\u1ecdc m\u00e1y, Stacking l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt m\u1ea1nh m\u1ebd gi\u00fap k\u1ebft h\u1ee3p nhi\u1ec1u m\u00f4 h\u00ecnh \u0111\u1ec3 n\u00e2ng cao \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u su\u1ea5t d\u1ef1 \u0111o\u00e1n. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t m\u00f4 h\u00ecnh &#8220;meta&#8221; \u0111\u1ec3 t\u1ed5ng h\u1ee3p c\u00e1c d\u1ef1 \u0111o\u00e1n t\u1eeb c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n, Stacking gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ra quy\u1ebft \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng AI. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 <a href=\"https:\/\/interdata.vn\/blog\/stacking-la-gi\/\"><strong>Stacking l\u00e0 g\u00ec<\/strong><\/a>, t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3, c\u0169ng nh\u01b0 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, c\u1ea5u tr\u00fac v\u00e0 c\u00e1c b\u01b0\u1edbc tri\u1ec3n khai m\u00f4 h\u00ecnh Stacking hi\u1ec7u qu\u1ea3. \u0110\u1ecdc ngay!<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Stacking-la-gi\"><\/span><strong>Stacking l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Stacking trong h\u1ecdc m\u00e1y, hay c\u00f2n g\u1ecdi l\u00e0 Stacking Generalisation, l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt trong \u0111\u00f3 t\u1ea5t c\u1ea3 c\u00e1c m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p l\u1ea1i v\u00e0 s\u1eed d\u1ee5ng theo tr\u1ecdng s\u1ed1 c\u1ee7a ch\u00fang \u0111\u1ec3 t\u1ea1o ra m\u1ed9t m\u00f4 h\u00ecnh m\u1edbi<\/strong>. K\u1ebft qu\u1ea3 l\u00e0 m\u00f4 h\u00ecnh n\u00e0y c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c t\u1ed1t h\u01a1n v\u00e0 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c \u0111\u1ec3 s\u1eed d\u1ee5ng.<\/p>\n<p>Ch\u00fang ta c\u00f3 th\u1ec3 h\u00ecnh dung n\u00f3 nh\u01b0 m\u1ed9t m\u00f4 h\u00ecnh hai l\u1edbp, trong \u0111\u00f3 l\u1edbp \u0111\u1ea7u ti\u00ean bao g\u1ed3m t\u1ea5t c\u1ea3 c\u00e1c m\u00f4 h\u00ecnh, v\u00e0 l\u1edbp th\u1ee9 hai l\u00e0 l\u1edbp d\u1ef1 \u0111o\u00e1n, \u0111\u01b0a ra k\u1ebft qu\u1ea3 \u0111\u1ea7u ra.<\/p>\n<p>Nguy\u00ean l\u00fd c\u1ee7a stacking l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 lu\u00f4n gi\u1ea3i quy\u1ebft m\u1ed9t v\u1ea5n \u0111\u1ec1 h\u1ecdc m\u00e1y b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng nhi\u1ec1u m\u00f4 h\u00ecnh kh\u00e1c nhau, m\u1ed7i m\u00f4 h\u00ecnh h\u1ecdc m\u1ed9t ph\u1ea7n c\u1ee7a v\u1ea5n \u0111\u1ec1 nh\u01b0ng kh\u00f4ng ph\u1ea3i to\u00e0n b\u1ed9 kh\u00f4ng gian v\u1ea5n \u0111\u1ec1. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fd do t\u1ea1i sao Stacking l\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n<figure id=\"attachment_26823\" aria-describedby=\"caption-attachment-26823\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Stacking-la-gi.png\" alt=\"Stacking l\u00e0 g\u00ec?\" width=\"800\" height=\"500\" class=\"size-full wp-image-26823\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Stacking-la-gi.png 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Stacking-la-gi-300x188.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Stacking-la-gi-768x480.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Stacking-la-gi-750x469.png 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-26823\" class=\"wp-caption-text\">Stacking l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>Stacking l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt gi\u00fap t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng c\u1ee7a <a href=\"https:\/\/interdata.vn\/blog\/tri-tue-nhan-tao-ai\/\">tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o<\/a> b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p nhi\u1ec1u m\u00f4 h\u00ecnh h\u1ecdc m\u00e1y th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng. Qu\u00e1 tr\u00ecnh n\u00e0y ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch l\u1ea5y c\u00e1c d\u1ef1 \u0111o\u00e1n t\u1eeb t\u1eebng m\u00f4 h\u00ecnh v\u00e0 \u0111\u01b0a ch\u00fang v\u00e0o m\u1ed9t &#8220;meta-model&#8221; cu\u1ed1i c\u00f9ng, \u0111\u1ec3 h\u1ecdc c\u00e1ch k\u1ebft h\u1ee3p v\u00e0 ph\u00e1t huy t\u1ed1i \u0111a \u0111i\u1ec3m m\u1ea1nh c\u1ee7a t\u1eebng m\u00f4 h\u00ecnh.<\/p>\n<p>V\u00ed d\u1ee5, m\u1ed9t m\u00f4 h\u00ecnh nh\u1eadn di\u1ec7n h\u00ecnh \u1ea3nh c\u00f3 th\u1ec3 r\u1ea5t gi\u1ecfi trong vi\u1ec7c nh\u1eadn di\u1ec7n \u0111\u1ed9ng v\u1eadt nh\u01b0ng l\u1ea1i g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi xe c\u1ed9. M\u1ed9t m\u00f4 h\u00ecnh kh\u00e1c c\u00f3 th\u1ec3 xu\u1ea5t s\u1eafc trong vi\u1ec7c nh\u1eadn di\u1ec7n xe c\u1ed9 nh\u01b0ng l\u1ea1i y\u1ebfu trong nh\u1eadn di\u1ec7n \u0111\u1ed9ng v\u1eadt.<\/p>\n<p>B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p ch\u00fang, meta-model c\u00f3 th\u1ec3 h\u1ecdc c\u00e1ch \u01b0u ti\u00ean m\u00f4 h\u00ecnh nh\u1eadn di\u1ec7n \u0111\u1ed9ng v\u1eadt cho c\u00e1c d\u1ef1 \u0111o\u00e1n v\u1ec1 \u0111\u1ed9ng v\u1eadt v\u00e0 m\u00f4 h\u00ecnh nh\u1eadn di\u1ec7n xe c\u1ed9 cho c\u00e1c d\u1ef1 \u0111o\u00e1n v\u1ec1 xe c\u1ed9.<\/p>\n<p>Vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c chuy\u00ean m\u00f4n ri\u00eang bi\u1ec7t n\u00e0y cho ph\u00e9p m\u00f4 h\u00ecnh k\u1ebft h\u1ee3p \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 t\u1ed1t h\u01a1n so v\u1edbi b\u1ea5t k\u1ef3 m\u00f4 h\u00ecnh \u0111\u01a1n l\u1ebb n\u00e0o. Stacking b\u00f9 \u0111\u1eafp cho nh\u1eefng \u0111i\u1ec3m y\u1ebfu c\u1ee7a m\u1ed7i m\u00f4 h\u00ecnh, t\u1eeb \u0111\u00f3 t\u1ea1o ra k\u1ebft qu\u1ea3 \u0111\u1ea7u ra ch\u00ednh x\u00e1c v\u00e0 m\u1ea1nh m\u1ebd h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-Stacking-lai-quan-trong\"><\/span><strong>T\u1ea1i sao Stacking l\u1ea1i quan tr\u1ecdng?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Stacking l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt quan tr\u1ecdng trong AI v\u00ec n\u00f3 cho ph\u00e9p c\u00e1c m\u00f4 h\u00ecnh <strong>t\u1eadn d\u1ee5ng \u0111i\u1ec3m m\u1ea1nh c\u1ee7a nhau \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng cao h\u01a1n<\/strong>. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c chuy\u00ean m\u00f4n \u0111a d\u1ea1ng, stacking b\u00f9 \u0111\u1eafp cho \u0111i\u1ec3m y\u1ebfu c\u1ee7a t\u1eebng m\u00f4 h\u00ecnh v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p h\u1ee3p t\u00e1c n\u00e0y gi\u00fap<strong> t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng AI c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c v\u00e0 m\u1ea1nh m\u1ebd h\u01a1n<\/strong>. Stacking \u0111\u1ea9y m\u1ea1nh AI b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p nhi\u1ec1u g\u00f3c nh\u00ecn kh\u00e1c nhau, t\u1eeb \u0111\u00f3 gi\u00fap ra quy\u1ebft \u0111\u1ecbnh t\u1ed1t h\u01a1n trong c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng nh\u01b0 th\u1ecb gi\u00e1c m\u00e1y t\u00ednh v\u00e0 x\u1eed l\u00fd ng\u00f4n ng\u1eef.<\/p>\n<p>Thay v\u00ec ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t m\u00f4 h\u00ecnh duy nh\u1ea5t, stacking h\u1ee3p nh\u1ea5t c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/thuat-toan-algorithm\/\">thu\u1eadt to\u00e1n<\/a> kh\u00e1c nhau, t\u1ea1o ra nh\u1eefng <strong>gi\u1ea3i ph\u00e1p m\u1ea1nh m\u1ebd h\u01a1n t\u1ed5ng th\u1ec3<\/strong>. Kh\u1ea3 n\u0103ng k\u1ebft h\u1ee3p \u0111i\u1ec3m m\u1ea1nh c\u1ee7a AI l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng gi\u00fap khai th\u00e1c h\u1ebft ti\u1ec1m n\u0103ng c\u1ee7a AI.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Kien-truc-cua-mot-mo-hinh-Stacking\"><\/span><strong>Ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t m\u00f4 h\u00ecnh Stacking<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t m\u00f4 h\u00ecnh Stacking trong h\u1ecdc m\u00e1y:<\/p>\n<ul>\n<li><strong>D\u1eef li\u1ec7u:<\/strong> D\u1eef li\u1ec7u m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c chia th\u00e0nh d\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n v\u00e0 d\u1eef li\u1ec7u ki\u1ec3m tra.<\/li>\n<li><strong>M\u00f4 h\u00ecnh c\u1ea5p 0:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c m\u00f4 h\u00ecnh d\u1ef1a tr\u00ean d\u1ef1 \u0111o\u00e1n.<\/li>\n<li><strong>D\u1ef1 \u0111o\u00e1n c\u1ea5p 0:<\/strong> D\u1ef1 \u0111o\u00e1n n\u00e0y l\u00e0 k\u1ebft qu\u1ea3 t\u1eeb c\u00e1c m\u00f4 h\u00ecnh c\u1ea5p 0. \u0110\u00e2y l\u00e0 d\u1ef1 \u0111o\u00e1n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n.<\/li>\n<li><strong>M\u00f4 h\u00ecnh c\u1ea5p 1:<\/strong> \u0110\u00e2y l\u00e0 m\u00f4 h\u00ecnh k\u1ebft h\u1ee3p d\u1ef1 \u0111o\u00e1n t\u1eeb t\u1ea5t c\u1ea3 c\u00e1c m\u00f4 h\u00ecnh c\u1ea5p 0. N\u00f3 c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 meta-model.<\/li>\n<li><strong>D\u1ef1 \u0111o\u00e1n c\u1ea5p 1:<\/strong> M\u00f4 h\u00ecnh c\u1ea5p 1 \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n tr\u00ean nhi\u1ec1u d\u1ef1 \u0111o\u00e1n t\u1eeb c\u00e1c m\u00f4 h\u00ecnh c\u1ea5p 0, sau \u0111\u00f3 t\u00edch h\u1ee3p c\u00e1c d\u1ef1 \u0111o\u00e1n n\u00e0y tr\u00ean d\u1eef li\u1ec7u ki\u1ec3m tra m\u1ed9t c\u00e1ch t\u1ed1i \u01b0u.<\/li>\n<\/ul>\n<figure id=\"attachment_26822\" aria-describedby=\"caption-attachment-26822\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Kien-truc-cua-mot-mo-hinh-Stacking.png\" alt=\"Ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t m\u00f4 h\u00ecnh Stacking\" width=\"800\" height=\"500\" class=\"size-full wp-image-26822\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Kien-truc-cua-mot-mo-hinh-Stacking.png 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Kien-truc-cua-mot-mo-hinh-Stacking-300x188.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Kien-truc-cua-mot-mo-hinh-Stacking-768x480.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Kien-truc-cua-mot-mo-hinh-Stacking-750x469.png 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-26822\" class=\"wp-caption-text\">Ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t m\u00f4 h\u00ecnh Stacking<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cach-hoat-dong-cua-Stacking\"><\/span><strong>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Stacking\u00a0<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Stacking li\u00ean quan \u0111\u1ebfn vi\u1ec7c k\u1ebft h\u1ee3p \u0111\u1ea7u ra t\u1eeb c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c nhau \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t d\u1ef1 \u0111o\u00e1n. \u0110\u00e2y l\u00e0 c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n c\u1ee7a qu\u00e1 tr\u00ecnh:<\/p>\n<ul>\n<li><strong>Chu\u1ea9n b\u1ecb d\u1eef li\u1ec7u:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed9 hu\u1ea5n luy\u1ec7n v\u00e0 ki\u1ec3m tra. D\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh, trong khi d\u1eef li\u1ec7u ki\u1ec3m tra d\u00f9ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t.<\/li>\n<li><strong>Hu\u1ea5n luy\u1ec7n c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n:<\/strong> Nhi\u1ec1u m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n (v\u00ed d\u1ee5: c\u00e2y quy\u1ebft \u0111\u1ecbnh, <a href=\"https:\/\/interdata.vn\/blog\/logistic-regression-la-gi\/\">h\u1ed3i quy logistic<\/a>) \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n \u0111\u1ed9c l\u1eadp s\u1eed d\u1ee5ng b\u1ed9 d\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n. C\u00e1c m\u00f4 h\u00ecnh n\u00e0y s\u1ebd c\u00f3 s\u1ef1 \u0111a d\u1ea1ng, \u0111\u1ea3m b\u1ea3o c\u00e1c g\u00f3c nh\u00ecn kh\u00e1c nhau v\u1ec1 d\u1eef li\u1ec7u.<\/li>\n<li><strong>T\u1ea1o ra d\u1ef1 \u0111o\u00e1n t\u1eeb m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n:<\/strong> C\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n \u0111\u00e3 hu\u1ea5n luy\u1ec7n \u0111\u01b0a ra d\u1ef1 \u0111o\u00e1n tr\u00ean c\u00f9ng b\u1ed9 d\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n. Nh\u1eefng d\u1ef1 \u0111o\u00e1n n\u00e0y t\u1ea1o th\u00e0nh m\u1ed9t t\u1eadp c\u00e1c \u0111\u1eb7c tr\u01b0ng m\u1edbi, \u0111\u1ea1i di\u1ec7n cho c\u00e1ch nh\u00ecn nh\u1eadn d\u1eef li\u1ec7u c\u1ee7a t\u1eebng m\u00f4 h\u00ecnh.<\/li>\n<li><strong>Hu\u1ea5n luy\u1ec7n meta-model:<\/strong> M\u1ed9t meta-model (m\u00f4 h\u00ecnh c\u1ea5p 1) \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n v\u1edbi c\u00e1c \u0111\u1eb7c tr\u01b0ng m\u1edbi (d\u1ef1 \u0111o\u00e1n t\u1eeb m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n) v\u00e0 c\u00e1c \u0111\u1eb7c tr\u01b0ng g\u1ed1c. Meta-model, th\u01b0\u1eddng l\u00e0 m\u1ed9t thu\u1eadt to\u00e1n \u0111\u01a1n gi\u1ea3n nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/hoi-quy-tuyen-tinh\/\">h\u1ed3i quy tuy\u1ebfn t\u00ednh<\/a>, s\u1ebd h\u1ecdc c\u00e1ch t\u00ecm ra c\u00e1c m\u1eabu trong c\u00e1c k\u1ebft qu\u1ea3 c\u1ee7a m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n.<\/li>\n<li><strong>D\u1ef1 \u0111o\u00e1n cu\u1ed1i c\u00f9ng:<\/strong> \u0110\u1ed1i v\u1edbi b\u1ed9 ki\u1ec3m tra, c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n s\u1ebd t\u1ea1o ra d\u1ef1 \u0111o\u00e1n, v\u00e0 sau \u0111\u00f3 meta-model s\u1ebd s\u1eed d\u1ee5ng nh\u1eefng d\u1ef1 \u0111o\u00e1n n\u00e0y \u0111\u1ec3 \u0111\u01b0a ra k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng. B\u1eb1ng c\u00e1ch n\u00e0y, meta-model s\u1ebd k\u1ebft h\u1ee3p s\u1ee9c m\u1ea1nh t\u1eeb t\u1ea5t c\u1ea3 c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n.<\/li>\n<\/ul>\n<p>C\u1ea5u tr\u00fac \u0111a l\u1edbp n\u00e0y cho ph\u00e9p stacking \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n b\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng \u0111i\u1ec3m m\u1ea1nh c\u1ee7a c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c nhau.<\/p>\n<figure id=\"attachment_26824\" aria-describedby=\"caption-attachment-26824\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Cach-hoat-dong-cua-Stacking.png\" alt=\"C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Stacking\" width=\"800\" height=\"500\" class=\"size-full wp-image-26824\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Cach-hoat-dong-cua-Stacking.png 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Cach-hoat-dong-cua-Stacking-300x188.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Cach-hoat-dong-cua-Stacking-768x480.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Cach-hoat-dong-cua-Stacking-750x469.png 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-26824\" class=\"wp-caption-text\">C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Stacking<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cac-ky-thuat-ensemble-pho-bien-lien-quan-den-Stacking\"><\/span><strong>C\u00e1c k\u1ef9 thu\u1eadt ensemble ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn Stacking<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong><a href=\"https:\/\/interdata.vn\/blog\/bagging-la-gi\/\">Bagging<\/a>:<\/strong> Hu\u1ea5n luy\u1ec7n nhi\u1ec1u m\u00f4 h\u00ecnh \u0111\u1ed9c l\u1eadp tr\u00ean c\u00e1c t\u1eadp con ng\u1eabu nhi\u00ean c\u1ee7a d\u1eef li\u1ec7u, sau \u0111\u00f3 t\u00ednh trung b\u00ecnh c\u00e1c d\u1ef1 \u0111o\u00e1n \u0111\u1ec3 gi\u1ea3m ph\u01b0\u01a1ng sai, nh\u01b0 trong Random Forests.<\/li>\n<li><strong>Boosting:<\/strong> Hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh theo t\u1eebng b\u01b0\u1edbc, v\u1edbi m\u1ed7i m\u00f4 h\u00ecnh m\u1edbi t\u1eadp trung v\u00e0o nh\u1eefng l\u1ed7i c\u1ee7a m\u00f4 h\u00ecnh tr\u01b0\u1edbc, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3, v\u00ed d\u1ee5 nh\u01b0 trong AdaBoost v\u00e0 Gradient Boosting.<\/li>\n<li><strong>Blending:<\/strong> T\u01b0\u01a1ng t\u1ef1 nh\u01b0 stacking, blending k\u1ebft h\u1ee3p d\u1ef1 \u0111o\u00e1n t\u1eeb c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c nhau nh\u01b0ng th\u01b0\u1eddng s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 ki\u1ec3m tra ri\u00eang thay v\u00ec cross-validation \u0111\u1ec3 hu\u1ea5n luy\u1ec7n meta-learner.<\/li>\n<li><strong>Voting:<\/strong> K\u1ebft h\u1ee3p d\u1ef1 \u0111o\u00e1n t\u1eeb nhi\u1ec1u m\u00f4 h\u00ecnh b\u1eb1ng c\u00e1ch b\u1ecf phi\u1ebfu \u0111a s\u1ed1 (cho ph\u00e2n lo\u1ea1i) ho\u1eb7c trung b\u00ecnh (cho h\u1ed3i quy) \u0111\u1ec3 t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cac-buoc-trien-khai-mo-hinh-Stacking\"><\/span><strong>C\u00e1c b\u01b0\u1edbc tri\u1ec3n khai m\u00f4 h\u00ecnh Stacking<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Gi\u1edd \u0111\u00e2y, khi ch\u00fang ta \u0111\u00e3 hi\u1ec3u v\u1ec1 ki\u1ebfn tr\u00fac c\u1ee7a m\u00f4 h\u00ecnh Stacking trong h\u1ecdc m\u00e1y, h\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u c\u00e1ch tri\u1ec3n khai m\u00f4 h\u00ecnh n\u00e0y.<\/p>\n<ul>\n<li><strong>D\u1eef li\u1ec7u:<\/strong> D\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed9 hu\u1ea5n luy\u1ec7n v\u00e0 ki\u1ec3m tra, chia th\u00e0nh n ph\u1ea7n. Vi\u1ec7c n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua cross-validation n-fold, m\u1ed9t k\u1ef9 thu\u1eadt gi\u00fap \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t m\u00f4 h\u00ecnh.<\/li>\n<li><strong>G\u1eafn d\u1eef li\u1ec7u v\u00e0o m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n:<\/strong> D\u1ef1a tr\u00ean d\u1eef li\u1ec7u n-fold, ph\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c g\u00e1n cho m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n v\u00e0 k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c t\u1ea1o ra. Qu\u00e1 tr\u00ecnh n\u00e0y l\u1eb7p l\u1ea1i cho t\u1ea5t c\u1ea3 c\u00e1c ph\u1ea7n trong n-fold \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n.<\/li>\n<li><strong>M\u00f4 h\u00ecnh c\u1ea5p 1:<\/strong> Sau khi c\u00f3 k\u1ebft qu\u1ea3 t\u1eeb c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n, ch\u00fang ta hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh c\u1ea5p 1.<\/li>\n<li><strong>D\u1ef1 \u0111o\u00e1n cu\u1ed1i c\u00f9ng:<\/strong> D\u1ef1 \u0111o\u00e1n t\u1eeb m\u00f4 h\u00ecnh c\u1ea5p 1 s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m \u0111\u1eb7c tr\u01b0ng cho m\u00f4 h\u00ecnh, v\u00e0 sau \u0111\u00f3 \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u00ean d\u1eef li\u1ec7u ki\u1ec3m tra \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng t\u1eeb m\u00f4 h\u00ecnh stacking.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, Stacking l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p r\u1ea5t h\u1eefu \u00edch trong h\u1ecdc m\u00e1y, gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t d\u1ef1 \u0111o\u00e1n v\u00e0 ra quy\u1ebft \u0111\u1ecbnh c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng AI. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, ki\u1ebfn tr\u00fac v\u00e0 c\u00e1c b\u01b0\u1edbc tri\u1ec3n khai m\u00f4 h\u00ecnh Stacking l\u00e0 g\u00ec s\u1ebd gi\u00fap b\u1ea1n \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt n\u00e0y v\u00e0o c\u00e1c b\u00e0i to\u00e1n th\u1ef1c t\u1ebf m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<p>\u0110\u1eebng qu\u00ean kh\u00e1m ph\u00e1 c\u00e1c k\u1ef9 thu\u1eadt ensemble kh\u00e1c \u0111\u1ec3 k\u1ebft h\u1ee3p t\u1ed1i \u01b0u c\u00e1c m\u00f4 h\u00ecnh v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t cho d\u1ef1 \u00e1n h\u1ecdc m\u00e1y c\u1ee7a b\u1ea1n.<\/p>\n<p>Khi x\u00e2y d\u1ef1ng v\u00e0 th\u1eed nghi\u1ec7m c\u00e1c m\u00f4 h\u00ecnh Stacking ph\u1ee9c t\u1ea1p, v\u1edbi nhi\u1ec1u l\u1edbp m\u00f4 h\u00ecnh c\u01a1 s\u1edf v\u00e0 meta-model, vi\u1ec7c s\u1edf h\u1eefu m\u1ed9t m\u00f4i tr\u01b0\u1eddng t\u00ednh to\u00e1n \u1ed5n \u0111\u1ecbnh v\u00e0 m\u1ea1nh m\u1ebd l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. H\u00e3y tham kh\u1ea3o d\u1ecbch v\u1ee5 <a href=\"https:\/\/interdata.vn\/thue-vps\/\">thu\u00ea VPS gi\u00e1 r\u1ebb ch\u1ea5t l\u01b0\u1ee3ng<\/a> t\u1ea1i InterData, v\u1edbi c\u1ea5u h\u00ecnh <a href=\"https:\/\/interdata.vn\/blog\/cpu-server\/\">CPU<\/a> Intel\/AMD th\u1ebf h\u1ec7 m\u1edbi, \u1ed5 c\u1ee9ng SSD NVMe U.2 t\u1ed1c \u0111\u1ed9 cao v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">b\u0103ng th\u00f4ng<\/a> t\u1ed1i \u01b0u, t\u1ea1o n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u00e0 tinh ch\u1ec9nh m\u00f4 h\u00ecnh c\u1ee7a b\u1ea1n.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c m\u00f4 h\u00ecnh Stacking quy m\u00f4 l\u1edbn c\u1ea7n x\u1eed l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3 ho\u1eb7c y\u00eau c\u1ea7u hi\u1ec7u n\u0103ng \u0111\u1ec9nh cao khi tri\u1ec3n khai th\u1ef1c t\u1ebf, <a href=\"https:\/\/interdata.vn\/blog\/cloud-server-may-chu-dam-may\/\">Cloud Server<\/a> ch\u00ednh l\u00e0 l\u1ef1a ch\u1ecdn n\u00e2ng c\u1ea5p l\u00fd t\u01b0\u1edfng. InterData cung c\u1ea5p d\u1ecbch v\u1ee5 <a href=\"https:\/\/interdata.vn\/cloud-server\/\">thu\u00ea Cloud Server t\u1ed1c \u0111\u1ed9 cao gi\u00e1 r\u1ebb<\/a>, v\u1eadn h\u00e0nh tr\u00ean ph\u1ea7n c\u1ee9ng cao c\u1ea5p th\u1ebf h\u1ec7 m\u1edbi nh\u1ea5t (<a href=\"https:\/\/interdata.vn\/blog\/chip-amd-la-gi\/\">CPU AMD<\/a> EPYC\/Intel Xeon Platinum, SSD NVMe U.2) v\u00e0 b\u0103ng th\u00f4ng kh\u00f4ng gi\u1edbi h\u1ea1n, mang l\u1ea1i s\u1ee9c m\u1ea1nh x\u1eed l\u00fd v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u01b0\u1ee3t tr\u1ed9i cho c\u00e1c t\u00e1c v\u1ee5 n\u1eb7ng.<\/p>\n<p><strong>INTERDATA<\/strong><\/p>\n<ul>\n<li><strong><a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">Website<\/a>:<\/strong><span>\u00a0<\/span>Interdata.vn<\/li>\n<li><strong>Hotline:<\/strong><span>\u00a0<\/span>1900-636822<\/li>\n<li><strong>Email:<\/strong><span>\u00a0<\/span>Info@interdata.vn<\/li>\n<li><strong>VP\u0110D:<\/strong><span>\u00a0<\/span>240 Nguy\u1ec5n \u0110\u00ecnh Ch\u00ednh, P.11. Q. Ph\u00fa Nhu\u1eadn, TP. Ho\u0302\u0300 Ch\u00ed Minh<\/li>\n<li><strong>VPGD:<\/strong><span>\u00a0<\/span>S\u1ed1 211 \u0110\u01b0\u1eddng s\u1ed1 5, K\u0110T Lakeview City, P. An Ph\u00fa, TP. Th\u1ee7 \u0110\u1ee9c, TP. H\u1ed3 Ch\u00ed Minh<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Trong h\u1ecdc m\u00e1y, Stacking l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt m\u1ea1nh m\u1ebd gi\u00fap k\u1ebft h\u1ee3p nhi\u1ec1u m\u00f4 h\u00ecnh \u0111\u1ec3 n\u00e2ng cao \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u su\u1ea5t d\u1ef1 \u0111o\u00e1n. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t m\u00f4 h\u00ecnh &#8220;meta&#8221; \u0111\u1ec3 t\u1ed5ng h\u1ee3p c\u00e1c d\u1ef1 \u0111o\u00e1n t\u1eeb c\u00e1c m\u00f4 h\u00ecnh c\u01a1 b\u1ea3n, Stacking gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ra quy\u1ebft<\/p>\n","protected":false},"author":11,"featured_media":26825,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[],"class_list":["post-26821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=26821"}],"version-history":[{"count":2,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26821\/revisions"}],"predecessor-version":[{"id":26827,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26821\/revisions\/26827"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/26825"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=26821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=26821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=26821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}