{"id":26229,"date":"2025-03-29T09:05:22","date_gmt":"2025-03-29T02:05:22","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=26229"},"modified":"2025-03-29T09:05:22","modified_gmt":"2025-03-29T02:05:22","slug":"hierarchical-clustering-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/","title":{"rendered":"Hierarchical Clustering l\u00e0 g\u00ec? \u1ee8ng d\u1ee5ng c\u1ee7a ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p"},"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\/hierarchical-clustering-la-gi\/#Hierarchical-Clustering-la-gi\" >Hierarchical Clustering 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\/hierarchical-clustering-la-gi\/#Cac-phuong-phap-Hierarchical-Clustering\" >C\u00e1c ph\u01b0\u01a1ng ph\u00e1p Hierarchical Clustering<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Phuong-phap-Tich-tu-Agglomerative-%E2%80%93-Gop\" >Ph\u01b0\u01a1ng ph\u00e1p T\u00edch t\u1ee5 (Agglomerative &#8211; G\u1ed9p)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Phuong-phap-Phan-hoach-Divisive-%E2%80%93-Phan-chia\" >Ph\u01b0\u01a1ng ph\u00e1p Ph\u00e2n ho\u1ea1ch (Divisive &#8211; Ph\u00e2n chia)<\/a><\/li><\/ul><\/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\/hierarchical-clustering-la-gi\/#Hierarchical-Clustering-hoat-dong-nhu-the-nao\" >Hierarchical Clustering ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Thuc-hien-Agglomerative-Hierarchical-Clustering\" >Th\u1ef1c hi\u1ec7n Agglomerative Hierarchical Clustering<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Thuoc-do-khoang-cach-giua-cac-doi-tuong\" >Th\u01b0\u1edbc \u0111o kho\u1ea3ng c\u00e1ch (gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Tieu-chuan-lien-ket-giua-cac-cum\" >Ti\u00eau chu\u1ea9n li\u00ean k\u1ebft gi\u1eefa c\u00e1c c\u1ee5m<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Uu-va-nhuoc-diem-cua-Hierarchical-Clustering\" >\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Hierarchical Clustering<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Uu-diem-cua-Hierarchical-Clustering-la-gi\" >\u01afu \u0111i\u1ec3m c\u1ee7a Hierarchical Clustering l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Nhuoc-diem-cua-Hierarchical-Clustering-la-gi\" >Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Hierarchical Clustering l\u00e0 g\u00ec?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Ung-dung-cua-Hierarchical-Clustering-hien-nay\" >\u1ee8ng d\u1ee5ng c\u1ee7a Hierarchical Clustering hi\u1ec7n nay<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#Cac-cau-hoi-thuong-gap-FAQs\" >C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#1-Co-may-loai-Hierarchical-Clustering\" >1. C\u00f3 m\u1ea5y lo\u1ea1i Hierarchical Clustering?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#2-Su-khac-biet-giua-K-means-va-Hierarchical-Clustering-la-gi\" >2. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa K-means v\u00e0 Hierarchical Clustering l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#3-Dendrogram-la-gi-trong-Hierarchical-Clustering\" >3. Dendrogram l\u00e0 g\u00ec trong Hierarchical Clustering?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/#4-Lam-the-nao-de-chon-phuong-phap-phu-hop-cho-phan-cum-phan-cap\" >4. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p cho ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>Hierarchical Clustering, hay ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p, l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n nh\u00f3m d\u1eef li\u1ec7u gi\u00fap x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng th\u00f4ng qua c\u1ea5u tr\u00fac c\u00e2y (dendrogram). Kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ee5m kh\u00e1c nh\u01b0 K-means, Hierarchical Clustering kh\u00f4ng y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i ch\u1ec9 \u0111\u1ecbnh tr\u01b0\u1edbc s\u1ed1 l\u01b0\u1ee3ng c\u1ee5m. C\u00f9ng t\u00ecm hi\u1ec3u chi ti\u1ebft <a href=\"https:\/\/interdata.vn\/blog\/hierarchical-clustering-la-gi\/\"><strong>Hierarchical Clustering l\u00e0 g\u00ec<\/strong><\/a>, t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a k\u1ef9 thu\u1eadt n\u00e0y trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Hierarchical-Clustering-la-gi\"><\/span>Hierarchical Clustering l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p (Hierarchical Clustering) l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n nh\u00f3m d\u1eef li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng s\u1eafp x\u1ebfp c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng quan s\u00e1t th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng c\u1ea5p b\u1eadc.<\/strong> K\u1ebft qu\u1ea3 c\u1ee7a <a href=\"https:\/\/interdata.vn\/blog\/thuat-toan-algorithm\/\">thu\u1eadt to\u00e1n<\/a> n\u00e0y l\u00e0 m\u1ed9t bi\u1ec3u \u0111\u1ed3 d\u1ea1ng c\u00e2y, g\u1ecdi l\u00e0 dendrogram, minh h\u1ecda m\u1ed1i quan h\u1ec7 v\u1ec1 m\u1ee9c \u0111\u1ed9 gi\u1ed1ng nhau gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n<figure id=\"attachment_26238\" aria-describedby=\"caption-attachment-26238\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hierarchical-Clustering-la-gi.png\" alt=\"Hierarchical Clustering l\u00e0 g\u00ec\" width=\"800\" height=\"500\" class=\"size-full wp-image-26238\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hierarchical-Clustering-la-gi.png 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hierarchical-Clustering-la-gi-300x188.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hierarchical-Clustering-la-gi-768x480.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hierarchical-Clustering-la-gi-750x469.png 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-26238\" class=\"wp-caption-text\">Hierarchical Clustering l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>M\u1ed9t \u0111i\u1ec3m kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c thu\u1eadt to\u00e1n ph\u00e2n c\u1ee5m nh\u01b0 K-means (v\u1ed1n y\u00eau c\u1ea7u x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc s\u1ed1 l\u01b0\u1ee3ng c\u1ee5m), \u0111\u00f3 l\u00e0 Hierarchical Clustering mang \u0111\u1ebfn s\u1ef1 linh ho\u1ea1t cho ng\u01b0\u1eddi d\u00f9ng: h\u1ecd c\u00f3 th\u1ec3 ch\u1ecdn s\u1ed1 l\u01b0\u1ee3ng c\u1ee5m mong mu\u1ed1n sau khi c\u00e2y ph\u00e2n c\u1ea5p \u0111\u00e3 \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh, b\u1eb1ng c\u00e1ch &#8220;c\u1eaft&#8221; c\u00e2y \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 ph\u00f9 h\u1ee3p.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-phuong-phap-Hierarchical-Clustering\"><\/span>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p Hierarchical Clustering<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh \u0111\u1ec3 th\u1ef1c hi\u1ec7n Ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phuong-phap-Tich-tu-Agglomerative-%E2%80%93-Gop\"><\/span>Ph\u01b0\u01a1ng ph\u00e1p T\u00edch t\u1ee5 (Agglomerative &#8211; G\u1ed9p)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Agglomerative l\u00e0 c\u00e1ch ti\u1ebfp c\u1eadn &#8220;t\u1eeb d\u01b0\u1edbi l\u00ean&#8221;. Ban \u0111\u1ea7u, m\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t c\u1ee5m \u0111\u1ed9c l\u1eadp. Sau \u0111\u00f3, \u1edf m\u1ed7i b\u01b0\u1edbc, c\u00e1c c\u1eb7p c\u1ee5m g\u1ea7n nhau nh\u1ea5t d\u1ef1a tr\u00ean m\u1ed9t ti\u00eau ch\u00ed \u0111o l\u01b0\u1eddng kho\u1ea3ng c\u00e1ch s\u1ebd \u0111\u01b0\u1ee3c h\u1ee3p nh\u1ea5t l\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y ti\u1ebfp di\u1ec5n cho t\u1edbi khi t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng quy v\u1ec1 m\u1ed9t c\u1ee5m duy nh\u1ea5t bao tr\u00f9m to\u00e0n b\u1ed9 d\u1eef li\u1ec7u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phuong-phap-Phan-hoach-Divisive-%E2%80%93-Phan-chia\"><\/span>Ph\u01b0\u01a1ng ph\u00e1p Ph\u00e2n ho\u1ea1ch (Divisive &#8211; Ph\u00e2n chia)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ng\u01b0\u1ee3c l\u1ea1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p tr\u00ean, Divisive l\u00e0 c\u00e1ch ti\u1ebfp c\u1eadn &#8220;t\u1eeb tr\u00ean xu\u1ed1ng&#8221;. N\u00f3 kh\u1edfi \u0111\u1ea7u b\u1eb1ng vi\u1ec7c coi to\u00e0n b\u1ed9 <a href=\"https:\/\/interdata.vn\/blog\/dataset-la-gi\/\">t\u1eadp d\u1eef li\u1ec7u<\/a> l\u00e0 m\u1ed9t c\u1ee5m l\u1edbn duy nh\u1ea5t. Ti\u1ebfp theo, c\u1ee5m n\u00e0y s\u1ebd li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c chia t\u00e1ch th\u00e0nh c\u00e1c c\u1ee5m nh\u1ecf h\u01a1n d\u1ef1a tr\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t n\u1ed9i t\u1ea1i, cho \u0111\u1ebfn khi m\u1ed7i c\u1ee5m cu\u1ed1i c\u00f9ng ch\u1ec9 ch\u1ee9a \u0111\u00fang m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c \u0111\u1ea1t m\u1ed9t \u0111i\u1ec1u ki\u1ec7n d\u1eebng kh\u00e1c.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Hierarchical-Clustering-hoat-dong-nhu-the-nao\"><\/span>Hierarchical Clustering ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Thuc-hien-Agglomerative-Hierarchical-Clustering\"><\/span>Th\u1ef1c hi\u1ec7n Agglomerative Hierarchical Clustering<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 h\u00ecnh dung r\u00f5 r\u00e0ng h\u01a1n c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p T\u00edch t\u1ee5 (Agglomerative), quy tr\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 qua c\u00e1c giai \u0111o\u1ea1n ch\u00ednh sau:<\/p>\n<ul>\n<li><strong>Thi\u1ebft l\u1eadp ban \u0111\u1ea7u:<\/strong> M\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng trong t\u1eadp d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t c\u1ee5m ri\u00eang l\u1ebb l\u00fac kh\u1edfi \u0111\u1ea7u.<\/li>\n<li><strong>\u0110o l\u01b0\u1eddng s\u1ef1 kh\u00e1c bi\u1ec7t\/gi\u1ed1ng nhau:<\/strong> T\u00ednh to\u00e1n ma tr\u1eadn kho\u1ea3ng c\u00e1ch (ho\u1eb7c \u0111\u1ed9 t\u01b0\u01a1ng t\u1ef1) gi\u1eefa t\u1ea5t c\u1ea3 c\u00e1c c\u1eb7p c\u1ee5m \u0111ang t\u1ed3n t\u1ea1i.<\/li>\n<li><strong>H\u1ee3p nh\u1ea5t c\u1ee5m:<\/strong> X\u00e1c \u0111\u1ecbnh c\u1eb7p c\u1ee5m c\u00f3 kho\u1ea3ng c\u00e1ch nh\u1ecf nh\u1ea5t (ho\u1eb7c \u0111\u1ed9 t\u01b0\u01a1ng t\u1ef1 l\u1edbn nh\u1ea5t) theo m\u1ed9t ti\u00eau chu\u1ea9n li\u00ean k\u1ebft \u0111\u00e3 ch\u1ecdn v\u00e0 k\u1ebft h\u1ee3p ch\u00fang th\u00e0nh m\u1ed9t c\u1ee5m l\u1edbn h\u01a1n.<\/li>\n<li><strong>L\u1eb7p l\u1ea1i quy tr\u00ecnh:<\/strong> Quay l\u1ea1i b\u01b0\u1edbc 2 v\u00e0 3, c\u1eadp nh\u1eadt ma tr\u1eadn kho\u1ea3ng c\u00e1ch v\u00e0 ti\u1ebfp t\u1ee5c h\u1ee3p nh\u1ea5t c\u00e1c c\u1ee5m g\u1ea7n nh\u1ea5t, cho \u0111\u1ebfn khi to\u00e0n b\u1ed9 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1ed9p v\u00e0o m\u1ed9t c\u1ee5m duy nh\u1ea5t.<\/li>\n<\/ul>\n<figure id=\"attachment_26239\" aria-describedby=\"caption-attachment-26239\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Cach-hoat-dong-cua-Hierarchical-Clustering.png\" alt=\"C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Hierarchical Clustering\" width=\"800\" height=\"389\" class=\"size-full wp-image-26239\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Cach-hoat-dong-cua-Hierarchical-Clustering.png 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Cach-hoat-dong-cua-Hierarchical-Clustering-300x146.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Cach-hoat-dong-cua-Hierarchical-Clustering-768x373.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Cach-hoat-dong-cua-Hierarchical-Clustering-750x365.png 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-26239\" class=\"wp-caption-text\">C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Hierarchical Clustering<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Thuoc-do-khoang-cach-giua-cac-doi-tuong\"><\/span>Th\u01b0\u1edbc \u0111o kho\u1ea3ng c\u00e1ch (gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Vi\u1ec7c x\u00e1c \u0111\u1ecbnh &#8220;kho\u1ea3ng c\u00e1ch&#8221; hay &#8220;m\u1ee9c \u0111\u1ed9 kh\u00e1c bi\u1ec7t&#8221; gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ri\u00eang l\u1ebb l\u00e0 n\u1ec1n t\u1ea3ng ban \u0111\u1ea7u cho thu\u1eadt to\u00e1n. C\u00f3 nhi\u1ec1u c\u00f4ng th\u1ee9c \u0111o l\u01b0\u1eddng kh\u00e1c nhau, trong \u0111\u00f3 m\u1ed9t s\u1ed1 l\u1ef1a ch\u1ecdn th\u00f4ng d\u1ee5ng l\u00e0:<\/p>\n<ul>\n<li><strong>Kho\u1ea3ng c\u00e1ch Euclid (Euclidean Distance):<\/strong> T\u00ednh to\u00e1n \u0111\u1ed9 d\u00e0i \u0111o\u1ea1n th\u1eb3ng n\u1ed1i tr\u1ef1c ti\u1ebfp gi\u1eefa hai \u0111i\u1ec3m trong kh\u00f4ng gian \u0111a chi\u1ec1u, l\u00e0 th\u01b0\u1edbc \u0111o h\u00ecnh h\u1ecdc ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/li>\n<li><strong>Kho\u1ea3ng c\u00e1ch Manhattan (Manhattan Distance):<\/strong> \u0110o t\u1ed5ng tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a hi\u1ec7u t\u1ecda \u0111\u1ed9 theo t\u1eebng chi\u1ec1u, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 kho\u1ea3ng c\u00e1ch di chuy\u1ec3n gi\u1eefa hai \u0111i\u1ec3m tr\u00ean m\u1ed9t m\u1ea1ng l\u01b0\u1edbi \u00f4 vu\u00f4ng.<\/li>\n<li><strong>\u0110\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng Cosine (Cosine Similarity) \/ Kho\u1ea3ng c\u00e1ch Cosine:<\/strong> \u0110o g\u00f3c gi\u1eefa hai vector \u0111\u1ea1i di\u1ec7n cho hai \u0111\u1ed1i t\u01b0\u1ee3ng trong kh\u00f4ng gian vector. N\u00f3 \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi \u0111\u1ed9 l\u1edbn c\u1ee7a vector kh\u00f4ng quan tr\u1ecdng b\u1eb1ng h\u01b0\u1edbng c\u1ee7a ch\u00fang (v\u00ed d\u1ee5 trong ph\u00e2n t\u00edch v\u0103n b\u1ea3n).<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Tieu-chuan-lien-ket-giua-cac-cum\"><\/span>Ti\u00eau chu\u1ea9n li\u00ean k\u1ebft gi\u1eefa c\u00e1c c\u1ee5m<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sau khi c\u00f3 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111i\u1ec3m, khi c\u1ea7n g\u1ed9p c\u00e1c c\u1ee5m (m\u1ed7i c\u1ee5m c\u00f3 th\u1ec3 ch\u1ee9a nhi\u1ec1u \u0111i\u1ec3m), thu\u1eadt to\u00e1n c\u1ea7n m\u1ed9t ti\u00eau chu\u1ea9n \u0111\u1ec3 li\u00ean k\u1ebft gi\u1eefa ch\u00fang. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p li\u00ean k\u1ebft ph\u1ed5 bi\u1ebfn g\u1ed3m:<\/p>\n<ul>\n<li><strong>Li\u00ean k\u1ebft \u0111\u01a1n (Single Linkage):<\/strong> Kho\u1ea3ng c\u00e1ch gi\u1eefa hai c\u1ee5m C1 v\u00e0 C2 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1eb1ng kho\u1ea3ng c\u00e1ch nh\u1ecf nh\u1ea5t gi\u1eefa m\u1ed9t \u0111i\u1ec3m b\u1ea5t k\u1ef3 trong C1 v\u00e0 m\u1ed9t \u0111i\u1ec3m b\u1ea5t k\u1ef3 trong C2.<\/li>\n<li><strong>Li\u00ean k\u1ebft trung b\u00ecnh (Average Linkage):<\/strong> Kho\u1ea3ng c\u00e1ch gi\u1eefa hai c\u1ee5m C1 v\u00e0 C2 \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c kho\u1ea3ng c\u00e1ch gi\u1eefa m\u1ecdi c\u1eb7p \u0111i\u1ec3m (p, q) c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh, trong \u0111\u00f3 p thu\u1ed9c C1 v\u00e0 q thu\u1ed9c C2.<\/li>\n<li><strong>Li\u00ean k\u1ebft ho\u00e0n to\u00e0n (Complete Linkage):<\/strong> Kho\u1ea3ng c\u00e1ch gi\u1eefa hai c\u1ee5m C1 v\u00e0 C2 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi kho\u1ea3ng c\u00e1ch l\u1edbn nh\u1ea5t gi\u1eefa m\u1ed9t \u0111i\u1ec3m b\u1ea5t k\u1ef3 trong C1 v\u00e0 m\u1ed9t \u0111i\u1ec3m b\u1ea5t k\u1ef3 trong C2.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Uu-va-nhuoc-diem-cua-Hierarchical-Clustering\"><\/span>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Hierarchical Clustering<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Uu-diem-cua-Hierarchical-Clustering-la-gi\"><\/span>\u01afu \u0111i\u1ec3m c\u1ee7a Hierarchical Clustering l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u00e1c c\u1ee5m kh\u00f4ng c\u00f3 d\u1ea1ng h\u00ecnh tr\u00f2n v\u00e0 c\u00e1c c\u1ee5m c\u00f3 k\u00edch th\u01b0\u1edbc v\u00e0 m\u1eadt \u0111\u1ed9 kh\u00e1c nhau.<\/li>\n<li>Kh\u1ea3 n\u0103ng x\u1eed l\u00fd d\u1eef li\u1ec7u thi\u1ebfu v\u00e0 d\u1eef li\u1ec7u nhi\u1ec5u.<\/li>\n<li>Kh\u1ea3 n\u0103ng ti\u1ebft l\u1ed9 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a d\u1eef li\u1ec7u, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 h\u1eefu \u00edch trong vi\u1ec7c hi\u1ec3u c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c c\u1ee5m.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Nhuoc-diem-cua-Hierarchical-Clustering-la-gi\"><\/span>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Hierarchical Clustering l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>C\u1ea7n c\u00f3 m\u1ed9t ti\u00eau ch\u00ed \u0111\u1ec3 d\u1eebng qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ee5m v\u00e0 x\u00e1c \u0111\u1ecbnh s\u1ed1 l\u01b0\u1ee3ng c\u1ee5m cu\u1ed1i c\u00f9ng.<\/li>\n<li>Chi ph\u00ed t\u00ednh to\u00e1n v\u00e0 y\u00eau c\u1ea7u b\u1ed9 nh\u1edb c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p c\u00f3 th\u1ec3 cao, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ed9 d\u1eef li\u1ec7u l\u1edbn.<\/li>\n<li>K\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 nh\u1ea1y c\u1ea3m v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u1edfi t\u1ea1o, ti\u00eau ch\u00ed k\u1ebft n\u1ed1i v\u00e0 ph\u00e9p \u0111o kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, Hierarchical Clustering l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p khai th\u00e1c d\u1eef li\u1ec7u, nh\u00f3m c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u t\u01b0\u01a1ng t\u1ef1 th\u00e0nh c\u00e1c c\u1ee5m b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u00e1c c\u1ee5m. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c lo\u1ea1i d\u1eef li\u1ec7u kh\u00e1c nhau v\u00e0 ti\u1ebft l\u1ed9 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c c\u1ee5m.<\/p>\n<p>Tuy nhi\u00ean, n\u00f3 c\u00f3 th\u1ec3 c\u00f3 chi ph\u00ed t\u00ednh to\u00e1n cao v\u00e0 k\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 nh\u1ea1y c\u1ea3m v\u1edbi m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ung-dung-cua-Hierarchical-Clustering-hien-nay\"><\/span>\u1ee8ng d\u1ee5ng c\u1ee7a Hierarchical Clustering hi\u1ec7n nay<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng th\u1ef1c. C\u00e1c \u1ee9ng d\u1ee5ng bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>T\u00ecm ki\u1ebfm th\u00f4ng tin:<\/strong> Ph\u00e2n lo\u1ea1i k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm d\u1ef1a tr\u00ean truy v\u1ea5n.<\/li>\n<li><strong>Kinh doanh: <\/strong>Ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p c\u00f3 th\u1ec3 gi\u00fap ph\u00e2n t\u00edch xu h\u01b0\u1edbng v\u00e0 ph\u00e2n \u0111o\u1ea1n d\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng &#8211; v\u00ed d\u1ee5, ph\u00e2n nh\u00f3m theo l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m, \u0111\u1eb7c \u0111i\u1ec3m d\u00e2n s\u1ed1, h\u00e0nh vi mua s\u1eafm, h\u1ed3 s\u01a1 r\u1ee7i ro ho\u1eb7c t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u1ea1ng x\u00e3 h\u1ed9i.<\/li>\n<li><strong>Nghi\u00ean c\u1ee9u l\u00e2m s\u00e0ng v\u00e0 tin sinh h\u1ecdc: <\/strong>C\u00e1c nh\u00f3m b\u1ec7nh nh\u00e2n cho nghi\u00ean c\u1ee9u l\u00e2m s\u00e0ng c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn h\u00e0ng ngh\u00ecn ng\u01b0\u1eddi. Ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p gi\u00fap ph\u00e2n lo\u1ea1i c\u00e1c qu\u1ea7n th\u1ec3 h\u1ed7n h\u1ee3p th\u00e0nh c\u00e1c nh\u00f3m \u0111\u1ed3ng nh\u1ea5t h\u01a1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c ti\u00eau ch\u00ed ch\u1ea9n \u0111o\u00e1n, ph\u1ea3n \u1ee9ng sinh l\u00fd ho\u1eb7c \u0111\u1ed9t bi\u1ebfn DNA. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 nh\u00f3m c\u00e1c lo\u00e0i theo \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc nh\u1eb1m hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 s\u1ef1 ph\u00e1t tri\u1ec3n ti\u1ebfn h\u00f3a.<\/li>\n<li><strong>X\u1eed l\u00fd h\u00ecnh \u1ea3nh v\u00e0 th\u00f4ng tin: <\/strong>Hierarchical Clustering\u00a0\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u1eadn d\u1ea1ng v\u0103n b\u1ea3n t\u1eeb h\u00ecnh \u1ea3nh \u0111\u1ec3 nh\u00f3m c\u00e1c k\u00fd t\u1ef1 vi\u1ebft tay theo h\u00ecnh d\u1ea1ng c\u1ee7a ch\u00fang. N\u00f3 c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 truy xu\u1ea5t th\u00f4ng tin b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c ti\u00eau ch\u00ed nh\u1ea5t \u0111\u1ecbnh ho\u1eb7c \u0111\u1ec3 ph\u00e2n lo\u1ea1i k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm.<\/li>\n<\/ul>\n<figure id=\"attachment_26240\" aria-describedby=\"caption-attachment-26240\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Ung-dung-cua-Hierarchical-Clustering-hien-nay.png\" alt=\"\u1ee8ng d\u1ee5ng c\u1ee7a Hierarchical Clustering hi\u1ec7n nay\" width=\"800\" height=\"500\" class=\"size-full wp-image-26240\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Ung-dung-cua-Hierarchical-Clustering-hien-nay.png 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Ung-dung-cua-Hierarchical-Clustering-hien-nay-300x188.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Ung-dung-cua-Hierarchical-Clustering-hien-nay-768x480.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Ung-dung-cua-Hierarchical-Clustering-hien-nay-750x469.png 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-26240\" class=\"wp-caption-text\">\u1ee8ng d\u1ee5ng c\u1ee7a Hierarchical Clustering hi\u1ec7n nay<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cac-cau-hoi-thuong-gap-FAQs\"><\/span>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1-Co-may-loai-Hierarchical-Clustering\"><\/span>1. C\u00f3 m\u1ea5y lo\u1ea1i Hierarchical Clustering?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3 hai lo\u1ea1i Hierarchical Clustering: ph\u00e2n c\u1ee5m h\u1ee3p nh\u1ea5t (agglomerative) v\u00e0 ph\u00e2n c\u1ee5m chia t\u00e1ch (divisive). Trong ph\u00e2n c\u1ee5m h\u1ee3p nh\u1ea5t, c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c coi l\u00e0 c\u00e1c c\u1ee5m ri\u00eang bi\u1ec7t v\u00e0 k\u1ebft h\u1ee3p ch\u00fang d\u1ef1a tr\u00ean s\u1ef1 t\u01b0\u01a1ng \u0111\u1ed3ng cho \u0111\u1ebfn khi t\u1ea1o th\u00e0nh m\u1ed9t c\u1ee5m duy nh\u1ea5t.<\/p>\n<p>C\u00f2n trong ph\u00e2n c\u1ee5m chia t\u00e1ch, c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t c\u1ee5m duy nh\u1ea5t v\u00e0 sau \u0111\u00f3 chia nh\u1ecf c\u00e1c c\u1ee5m d\u1ef1a tr\u00ean s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng \u0111\u1ed3ng cho \u0111\u1ebfn khi c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u ri\u00eang l\u1ebb tr\u1edf th\u00e0nh c\u00e1c c\u1ee5m ri\u00eang bi\u1ec7t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2-Su-khac-biet-giua-K-means-va-Hierarchical-Clustering-la-gi\"><\/span>2. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa K-means v\u00e0 Hierarchical Clustering l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa K-means v\u00e0 ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p l\u00e0 K-means chia d\u1eef li\u1ec7u th\u00e0nh m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng c\u1ee5m x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc (k), trong khi ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p t\u1ea1o ra m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u00e1c c\u1ee5m m\u00e0 kh\u00f4ng c\u1ea7n bi\u1ebft s\u1ed1 l\u01b0\u1ee3ng c\u1ee5m tr\u01b0\u1edbc.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Dendrogram-la-gi-trong-Hierarchical-Clustering\"><\/span>3. Dendrogram l\u00e0 g\u00ec trong Hierarchical Clustering?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Dendrogram l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 d\u1ea1ng c\u00e2y bi\u1ec3u di\u1ec5n c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a c\u00e1c c\u1ee5m. N\u00f3 cho th\u1ea5y c\u00e1ch c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u ho\u1eb7c c\u00e1c c\u1ee5m \u0111\u01b0\u1ee3c h\u1ee3p nh\u1ea5t ho\u1eb7c chia t\u00e1ch \u1edf m\u1ed7i b\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ee5m, v\u1edbi chi\u1ec1u cao c\u1ee7a c\u00e1c nh\u00e1nh ch\u1ec9 ra kho\u1ea3ng c\u00e1ch m\u00e0 t\u1ea1i \u0111\u00f3 qu\u00e1 tr\u00ecnh h\u1ee3p nh\u1ea5t ho\u1eb7c chia t\u00e1ch x\u1ea3y ra.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4-Lam-the-nao-de-chon-phuong-phap-phu-hop-cho-phan-cum-phan-cap\"><\/span>4. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p cho ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Vi\u1ec7c ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5u tr\u00fac c\u1ee7a d\u1eef li\u1ec7u. V\u00ed d\u1ee5:<\/p>\n<ul>\n<li>Min Distance ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u1edbi c\u00e1c c\u1ee5m d\u00e0i.<\/li>\n<li>Max Distance t\u1ea1o ra c\u00e1c c\u1ee5m nh\u1ecf g\u1ecdn, ph\u00e2n t\u00e1ch r\u00f5 r\u00e0ng.<\/li>\n<li>Group Average mang l\u1ea1i c\u00e1ch ti\u1ebfp c\u1eadn c\u00e2n b\u1eb1ng.<\/li>\n<li>Ph\u01b0\u01a1ng ph\u00e1p Ward c\u1ed1 g\u1eafng gi\u1ea3m thi\u1ec3u s\u1ef1 gia t\u0103ng l\u1ed7i b\u00ecnh ph\u01b0\u01a1ng v\u00e0 duy tr\u00ec c\u00e1c c\u1ee5m nh\u1ecf g\u1ecdn.<\/li>\n<\/ul>\n<p>N\u1ebfu b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p l\u01b0u tr\u1eef hi\u1ec7u qu\u1ea3, h\u00e3y tham kh\u1ea3o d\u1ecbch v\u1ee5 &#8220;<a href=\"https:\/\/interdata.vn\/thue-vps\/\">thu\u00ea VPS ch\u1ea5t l\u01b0\u1ee3ng gi\u00e1 r\u1ebb<\/a>&#8221; v\u00e0 &#8220;<a href=\"https:\/\/interdata.vn\/cloud-server\/\">Cloud server gi\u00e1 r\u1ebb t\u1ed1c \u0111\u1ed9 cao<\/a>&#8221; t\u1ea1i InterData. V\u1edbi ph\u1ea7n c\u1ee9ng th\u1ebf h\u1ec7 m\u1edbi nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/cpu-amd-epyc\/\">CPU AMD EPYC<\/a> v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/intel-xeon\/\">Intel Xeon<\/a> Platinum, ch\u00fang t\u00f4i cung c\u1ea5p d\u1ecbch v\u1ee5 <a href=\"https:\/\/interdata.vn\/blog\/vps-la-gi\/\">VPS<\/a> \u1ed5n \u0111\u1ecbnh, <a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">b\u0103ng th\u00f4ng<\/a> cao v\u00e0 dung l\u01b0\u1ee3ng t\u1ed1i \u01b0u, \u0111\u00e1p \u1ee9ng m\u1ecdi nhu c\u1ea7u t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn chuy\u00ean s\u00e2u. D\u1ecbch v\u1ee5 t\u1ea1i InterData ph\u00f9 h\u1ee3p cho m\u1ecdi lo\u1ea1i h\u00ecnh \u1ee9ng d\u1ee5ng, t\u1eeb ph\u00e2n t\u00edch d\u1eef li\u1ec7u \u0111\u1ebfn c\u00e1c d\u1ef1 \u00e1n y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t cao, gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m chi ph\u00ed m\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3.<\/p>\n<div class=\"entry-content no-share\">\n<div class=\"content-inner \">\n<p>H\u00e3y li\u00ean h\u1ec7 ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n!<\/p>\n<p><strong>INTERDATA<\/strong><\/p>\n<ul>\n<li><strong>Website:<\/strong>\u00a0Interdata.vn<\/li>\n<li><strong>Hotline:<\/strong>\u00a01900-636822<\/li>\n<li><strong>Email:<\/strong>\u00a0Info@interdata.vn<\/li>\n<li><strong>VP\u0110D:<\/strong>\u00a0240 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>\u00a0S\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<\/div>\n<\/div>\n<div class=\"jeg_share_bottom_container\">\n<div class=\"jeg_share_button share-bottom clearfix\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Hierarchical Clustering, hay ph\u00e2n c\u1ee5m ph\u00e2n c\u1ea5p, l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n nh\u00f3m d\u1eef li\u1ec7u gi\u00fap x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng th\u00f4ng qua c\u1ea5u tr\u00fac c\u00e2y (dendrogram). Kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ee5m kh\u00e1c nh\u01b0 K-means, Hierarchical Clustering kh\u00f4ng y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i ch\u1ec9 \u0111\u1ecbnh tr\u01b0\u1edbc s\u1ed1 l\u01b0\u1ee3ng<\/p>\n","protected":false},"author":11,"featured_media":26241,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[],"class_list":["post-26229","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\/26229","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=26229"}],"version-history":[{"count":2,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26229\/revisions"}],"predecessor-version":[{"id":26242,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26229\/revisions\/26242"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/26241"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=26229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=26229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=26229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}