{"id":26430,"date":"2025-08-19T11:27:18","date_gmt":"2025-08-19T04:27:18","guid":{"rendered":"https:\/\/vbee.vn\/blog\/?p=26430"},"modified":"2025-08-19T15:57:39","modified_gmt":"2025-08-19T08:57:39","slug":"cnn-la-gi","status":"publish","type":"post","link":"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/","title":{"rendered":"CNN l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 m\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\"><div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung ch\u00ednh<\/p><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><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:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#1_CNN_la_gi\" >1. CNN 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:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#2_Cau_truc_va_co_che_hoat_dong_cua_CNN\" >2. C\u1ea5u tr\u00fac v\u00e0 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CNN<\/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:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#21_Cau_truc_co_ban_cua_CNN\" >2.1 C\u1ea5u tr\u00fac c\u01a1 b\u1ea3n c\u1ee7a CNN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#22_Co_che_hoat_dong_cua_CNN\" >2.2 C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CNN<\/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:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#3_Cac_mo_hinh_CNN_pho_bien_hien_nay\" >3. C\u00e1c m\u00f4 h\u00ecnh CNN ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<\/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:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#31_AlexNet\" >3.1 AlexNet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#32_VGGNet\" >3.2 VGGNet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#33_ResNet\" >3.3 ResNet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#34_Inception\" >3.4 Inception<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#4_Ung_dung_cua_CNN_vao_cuoc_song\" >4. \u1ee8ng d\u1ee5ng c\u1ee7a CNN v\u00e0o cu\u1ed9c s\u1ed1ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#41_Nhan_dien_hinh_anh_va_video\" >4.1 Nh\u1eadn di\u1ec7n h\u00ecnh \u1ea3nh v\u00e0 video<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#42_Xu_ly_ngon_ngu_tu_nhien\" >4.2 X\u1eed l\u00fd ng\u00f4n ng\u1eef t\u1ef1 nhi\u00ean<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#43_Y_te_va_chan_doan_hinh_anh\" >4.3 Y t\u1ebf v\u00e0 ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#44_O_to_tu_lai_va_cong_nghe_an_ninh\" >4.4 \u00d4 t\u00f4 t\u1ef1 l\u00e1i v\u00e0 c\u00f4ng ngh\u1ec7 an ninh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#5_Uu_diem_va_han_che_cua_CNN\" >5. \u01afu \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a CNN<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#51_Uu_diem\" >5.1 \u01afu \u0111i\u1ec3m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#52_Han_che\" >5.2 H\u1ea1n ch\u1ebf<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#6_Cach_chon_tham_so_cho_CNN\" >6. C\u00e1ch ch\u1ecdn tham s\u1ed1 cho CNN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#7_Cau_hoi_thuong_gap_ve_CNN\" >7. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 CNN<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#71_CNN_khac_gi_voi_mang_no-ron_thong_thuong\" >7.1 CNN kh\u00e1c g\u00ec v\u1edbi m\u1ea1ng n\u01a1-ron th\u00f4ng th\u01b0\u1eddng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#72_Lop_tich_chap_trong_CNN_lam_gi\" >7.2 L\u1edbp t\u00edch ch\u1eadp trong CNN l\u00e0m g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#73_Tai_sao_can_lop_gop_pooling\" >7.3 T\u1ea1i sao c\u1ea7n l\u1edbp g\u1ed9p (pooling)?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#74_Lam_sao_chon_kich_thuoc_va_so_luong_bo_loc\" >7.4 L\u00e0m sao ch\u1ecdn k\u00edch th\u01b0\u1edbc v\u00e0 s\u1ed1 l\u01b0\u1ee3ng b\u1ed9 l\u1ecdc?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/vbee.vn\/blog\/chia-se\/cnn-la-gi\/#75_Tai_sao_CNN_tot_cho_hinh_anh\" >7.5 T\u1ea1i sao CNN t\u1ed1t cho h\u00ecnh \u1ea3nh?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div><p><strong>CNN l\u00e0 m\u1ed9t trong nh\u1eefng th\u00e0nh t\u1ef1u quan tr\u1ecdng nh\u1ea5t c\u1ee7a Deep Learning, gi\u00fap m\u00e1y t\u00ednh c\u00f3 kh\u1ea3 n\u0103ng h\u1ecdc v\u00e0 tr\u00edch xu\u1ea5t \u0111\u1eb7c tr\u01b0ng t\u1eeb d\u1eef li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd c\u00f9ng b\u1ea1n t\u00ecm hi\u1ec3u chi ti\u1ebft CNN l\u00e0 g\u00ec v\u00e0 c\u00e1c th\u00f4ng tin v\u1ec1 c\u1ea5u tr\u00fac, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, m\u00f4 h\u00ecnh ti\u00eau bi\u1ec3u v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n c\u1ee7a CNN.<\/strong><\/p><p style=\"text-align: center;\"><p><iframe style=\"position: relative; top: 0px; border: none;\" title=\"H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng\" src=\"https:\/\/vbee.vn\/demo\" width=\"100%\" height=\"320\"><\/iframe><\/p><h2><span class=\"ez-toc-section\" id=\"1_CNN_la_gi\"><\/span>1. CNN l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>CNN l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Convolutional Neural Network, \u0111\u01b0\u1ee3c d\u1ecbch sang <a href=\"https:\/\/vbee.vn\/blog\/chuyen-van-ban-thanh-giong-noi\/vietnamese-vi\/\">ti\u1ebfng Vi\u1ec7t<\/a> l\u00e0 &#8220;M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp&#8221; ho\u1eb7c &#8220;M\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp&#8221;. CNN l\u00e0 m\u1ed9t lo\u1ea1i m\u1ea1ng n\u01a1-ron \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac l\u01b0\u1edbi nh\u01b0 h\u00ecnh \u1ea3nh, video ho\u1eb7c c\u00f3 th\u1ec3 l\u00e0 \u00e2m thanh ho\u1eb7c v\u0103n b\u1ea3n. Chung\u00b7c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 \u0111\u1ed9ng h\u1ecdc v\u00e0 tr\u00edch xu\u1ea5t c\u00e1c \u0111\u1eb7c tr\u01b0ng quan tr\u1ecdng t\u1eeb d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n con ng\u01b0\u1eddi can thi\u1ec7p nhi\u1ec1u.<\/p><p>M\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t trong nh\u1eefng th\u00e0nh t\u1ef1u quan tr\u1ecdng nh\u1ea5t trong l\u0129nh v\u1ef1c <a href=\"https:\/\/vbee.vn\/blog\/ai\/deep-learning\/\">h\u1ecdc s\u00e2u<\/a> (Deep Learning). Kh\u00e1c v\u1edbi c\u00e1c m\u1ea1ng n\u01a1-ron truy\u1ec1n th\u1ed1ng, CNN c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n c\u00e1c m\u1eabu ph\u1ee9c t\u1ea1p trong d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh, \u00e2m thanh v\u00e0 v\u0103n b\u1ea3n v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao. \u0110i\u1ec1u n\u00e0y gi\u00fap CNN tr\u1edf n\u00ean v\u01b0\u1ee3t tr\u1ed9i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf nh\u01b0 nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t, ph\u00e2n lo\u1ea1i h\u00ecnh \u1ea3nh v\u00e0 nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c.<\/p><figure id=\"attachment_26435\" aria-describedby=\"caption-attachment-26435\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26435\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/CNN-la-gi.webp\" alt=\"CNN l\u00e0 g\u00ec?\" width=\"768\" height=\"430\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/CNN-la-gi.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/CNN-la-gi-300x168.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26435\" class=\"wp-caption-text\">CNN l\u00e0 g\u00ec?<\/figcaption><\/figure><h2><span class=\"ez-toc-section\" id=\"2_Cau_truc_va_co_che_hoat_dong_cua_CNN\"><\/span>2. C\u1ea5u tr\u00fac v\u00e0 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CNN<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"21_Cau_truc_co_ban_cua_CNN\"><\/span>2.1 C\u1ea5u tr\u00fac c\u01a1 b\u1ea3n c\u1ee7a CNN<span class=\"ez-toc-section-end\"><\/span><\/h3><p>M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp bao g\u1ed3m nhi\u1ec1u lo\u1ea1i l\u1edbp kh\u00e1c nhau, m\u1ed7i l\u1edbp \u0111\u1ec1u c\u00f3 ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t:<\/p><ul><li><strong>L\u1edbp t\u00edch ch\u1eadp (Convolutional Layer)<\/strong>: \u0110\u00e2y l\u00e0 l\u1edbp quan tr\u1ecdng nh\u1ea5t trong CNN. L\u1edbp n\u00e0y th\u1ef1c hi\u1ec7n ph\u00e9p t\u00edch ch\u1eadp gi\u1eefa \u0111\u1ea7u v\u00e0o v\u00e0 c\u00e1c b\u1ed9 l\u1ecdc \u0111\u1ec3 tr\u00edch xu\u1ea5t c\u00e1c \u0111\u1eb7c tr\u01b0ng. M\u1ed7i b\u1ed9 l\u1ecdc c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n m\u1ed9t lo\u1ea1i \u0111\u1eb7c tr\u01b0ng c\u1ee5 th\u1ec3 nh\u01b0 c\u1ea1nh ngang, c\u1ea1nh d\u1ecdc ho\u1eb7c c\u00e1c c\u1ea5u tr\u00fac ph\u1ee9c t\u1ea1p h\u01a1n \u1edf c\u00e1c l\u1edbp s\u00e2u h\u01a1n. K\u1ebft qu\u1ea3 c\u1ee7a l\u1edbp t\u00edch ch\u1eadp l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c b\u1ea3n \u0111\u1ed3 \u0111\u1eb7c tr\u01b0ng.<\/li><li><strong>L\u1edbp k\u00edch ho\u1ea1t (Activation Layer)<\/strong>: L\u1edbp n\u00e0y \u00e1p d\u1ee5ng m\u1ed9t h\u00e0m phi tuy\u1ebfn, th\u01b0\u1eddng l\u00e0 ReLU, l\u00ean k\u1ebft qu\u1ea3 c\u1ee7a l\u1edbp t\u00edch ch\u1eadp. ReLU chuy\u1ec3n \u0111\u1ed5i t\u1ea5t c\u1ea3 gi\u00e1 tr\u1ecb \u00e2m th\u00e0nh 0 trong khi gi\u1eef nguy\u00ean c\u00e1c gi\u00e1 tr\u1ecb d\u01b0\u01a1ng. H\u00e0m ReLU gi\u00fap m\u00f4 h\u00ecnh h\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p v\u00e0 phi tuy\u1ebfn trong d\u1eef li\u1ec7u, \u0111\u1ed3ng th\u1eddi gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 gradient bi\u1ebfn m\u1ea5t khi hu\u1ea5n luy\u1ec7n m\u1ea1ng s\u00e2u.<\/li><li><strong>L\u1edbp g\u1ed9p (Pooling Layer)<\/strong>: L\u1edbp n\u00e0y gi\u1ea3m k\u00edch th\u01b0\u1edbc kh\u00f4ng gian c\u1ee7a b\u1ea3n \u0111\u1ed3 \u0111\u1eb7c tr\u01b0ng, gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng tham s\u1ed1 v\u00e0 t\u00ednh to\u00e1n trong m\u1ea1ng. Max Pooling l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t, l\u1ea5y gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t trong m\u1ed9t c\u1eeda s\u1ed5. Pooling c\u0169ng gi\u00fap m\u00f4 h\u00ecnh \u00edt nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi v\u1ecb tr\u00ed ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1eb7c tr\u01b0ng, t\u0103ng kh\u1ea3 n\u0103ng t\u1ed5ng qu\u00e1t h\u00f3a.<\/li><li><strong>L\u1edbp k\u1ebft n\u1ed1i \u0111\u1ea7y \u0111\u1ee7 (Fully-Connected Layer)<\/strong>: \u1ede cu\u1ed1i CNN, c\u00e1c b\u1ea3n \u0111\u1ed3 \u0111\u1eb7c tr\u01b0ng \u0111\u01b0\u1ee3c l\u00e0m ph\u1eb3ng th\u00e0nh m\u1ed9t vector v\u00e0 k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t ho\u1eb7c nhi\u1ec1u l\u1edbp k\u1ebft n\u1ed1i \u0111\u1ea7y \u0111\u1ee7. C\u00e1c l\u1edbp n\u00e0y ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 m\u1ea1ng n\u01a1-ron truy\u1ec1n th\u1ed1ng, k\u1ebft h\u1ee3p m\u1ecdi \u0111\u1eb7c tr\u01b0ng \u0111\u00e3 h\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh cu\u1ed1i c\u00f9ng, nh\u01b0 ph\u00e2n lo\u1ea1i \u0111\u1ed1i t\u01b0\u1ee3ng trong \u1ea3nh.<\/li><\/ul><p>Ngo\u00e0i ra, CNN th\u01b0\u1eddng c\u00f3 m\u1ed9t s\u1ed1 l\u1edbp b\u1ed5 sung nh\u01b0 Dropout (gi\u00fap ng\u0103n overfitting b\u1eb1ng c\u00e1ch ng\u1eabu nhi\u00ean t\u1eaft m\u1ed9t s\u1ed1 n\u01a1-ron trong qu\u00e1 tr\u00ecnh hu\u1ea5n luy\u1ec7n) v\u00e0 Batch Normalization (chu\u1ea9n h\u00f3a \u0111\u1ea7u ra c\u1ee7a l\u1edbp tr\u01b0\u1edbc \u0111\u1ec3 gi\u00fap m\u1ea1ng h\u1ed9i t\u1ee5 nhanh h\u01a1n v\u00e0 \u1ed5n \u0111\u1ecbnh h\u01a1n).<\/p><figure id=\"attachment_26434\" aria-describedby=\"caption-attachment-26434\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26434\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Cau-truc-co-ban-cua-CNN.webp\" alt=\"C\u1ea5u tr\u00fac c\u1ed1t l\u00f5i c\u1ee7a CNN.\" width=\"768\" height=\"431\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Cau-truc-co-ban-cua-CNN.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Cau-truc-co-ban-cua-CNN-300x168.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26434\" class=\"wp-caption-text\">C\u1ea5u tr\u00fac c\u1ed1t l\u00f5i c\u1ee7a CNN.<\/figcaption><\/figure><h3><span class=\"ez-toc-section\" id=\"22_Co_che_hoat_dong_cua_CNN\"><\/span>2.2 C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CNN<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CNN b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c b\u1ed9 l\u1ecdc t\u00edch ch\u1eadp \u0111\u1ec3 t\u1ea1o ra b\u1ea3n \u0111\u1ed3 \u0111\u1eb7c tr\u01b0ng, sau \u0111\u00f3 k\u1ebft qu\u1ea3 \u0111i qua h\u00e0m k\u00edch ho\u1ea1t \u0111\u1ec3 h\u1ecdc c\u00e1c quan h\u1ec7 phi tuy\u1ebfn. Ti\u1ebfp \u0111\u1ebfn, m\u00f4 h\u00ecnh s\u1eed d\u1ee5ng pooling (th\u01b0\u1eddng l\u00e0 Max Pooling) \u0111\u1ec3 gi\u1ea3m k\u00edch th\u01b0\u1edbc v\u00e0 t\u0103ng t\u00ednh b\u1ec1n v\u1eefng v\u1edbi nhi\u1ec5u.<\/p><p>\u1ede cu\u1ed1i m\u1ea1ng, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u00e0m ph\u1eb3ng th\u00e0nh vector v\u00e0 \u0111\u01b0a qua c\u00e1c l\u1edbp k\u1ebft n\u1ed1i \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 suy lu\u1eadn v\u00e0 ph\u00e2n lo\u1ea1i. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh h\u1ecdc di\u1ec5n ra nh\u1edd thu\u1eadt to\u00e1n lan truy\u1ec1n ng\u01b0\u1ee3c (Backpropagation), gi\u00fap CNN li\u00ean t\u1ee5c \u0111i\u1ec1u ch\u1ec9nh tr\u1ecdng s\u1ed1 \u0111\u1ec3 gi\u1ea3m sai s\u1ed1 v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng nh\u1eadn di\u1ec7n m\u1eabu.<\/p><figure id=\"attachment_26436\" aria-describedby=\"caption-attachment-26436\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26436\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Co-che-hoat-dong-cua-CNN.webp\" alt=\"C\u01a1 ch\u1ebf v\u1eadn h\u00e0nh c\u1ee7a m\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp (CNN).\" width=\"768\" height=\"298\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Co-che-hoat-dong-cua-CNN.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Co-che-hoat-dong-cua-CNN-300x116.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26436\" class=\"wp-caption-text\">C\u01a1 ch\u1ebf v\u1eadn h\u00e0nh c\u1ee7a m\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp (CNN).<\/figcaption><\/figure><h2><span class=\"ez-toc-section\" id=\"3_Cac_mo_hinh_CNN_pho_bien_hien_nay\"><\/span>3. C\u00e1c m\u00f4 h\u00ecnh CNN ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"31_AlexNet\"><\/span>3.1 AlexNet<span class=\"ez-toc-section-end\"><\/span><\/h3><p>AlexNet, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Alex Krizhevsky v\u00e0 Geoffrey Hinton v\u00e0o n\u0103m 2012, l\u00e0 m\u1ed9t b\u01b0\u1edbc ngo\u1eb7t l\u1edbn trong l\u1ecbch s\u1eed c\u1ee7a M\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp. M\u00f4 h\u00ecnh n\u00e0y \u0111\u00e3 gi\u00e0nh chi\u1ebfn th\u1eafng trong cu\u1ed9c thi ImageNet n\u0103m 2012 v\u1edbi t\u1ef7 l\u1ec7 ch\u00ednh x\u00e1c cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng.<\/p><p>AlexNet c\u00f3 c\u1ea5u tr\u00fac g\u1ed3m 5 l\u1edbp t\u00edch ch\u1eadp v\u00e0 3 l\u1edbp k\u1ebft n\u1ed1i \u0111\u1ea7y \u0111\u1ee7. \u0110i\u1ec3m \u0111\u1ed9t ph\u00e1 c\u1ee7a AlexNet l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng h\u00e0m k\u00edch ho\u1ea1t ReLU thay v\u00ec c\u00e1c h\u00e0m truy\u1ec1n th\u1ed1ng nh\u01b0 sigmoid, gi\u00fap \u0111\u00e0o t\u1ea1o nhanh h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n. M\u00f4 h\u00ecnh c\u0169ng \u00e1p d\u1ee5ng k\u1ef9 thu\u1eadt Dropout \u0111\u1ec3 ng\u0103n overfitting, m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn trong c\u00e1c m\u1ea1ng n\u01a1-ron s\u00e2u.<\/p><h3><span class=\"ez-toc-section\" id=\"32_VGGNet\"><\/span>3.2 VGGNet<span class=\"ez-toc-section-end\"><\/span><\/h3><p>VGGNet, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi nh\u00f3m nghi\u00ean c\u1ee9u Visual Geometry Group t\u1ea1i \u0110\u1ea1i h\u1ecdc Oxford v\u00e0o n\u0103m 2014, n\u1ed5i ti\u1ebfng v\u1edbi ki\u1ebfn tr\u00fac \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3. \u0110i\u1ec3m \u0111\u1eb7c tr\u01b0ng c\u1ee7a M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp n\u00e0y l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c l\u1edbp t\u00edch ch\u1eadp v\u1edbi k\u00edch th\u01b0\u1edbc b\u1ed9 l\u1ecdc nh\u1ecf 3&#215;3 xuy\u00ean su\u1ed1t to\u00e0n b\u1ed9 m\u1ea1ng.<\/p><p>Thi\u1ebft k\u1ebf c\u1ee7a VGGNet d\u1ef1a tr\u00ean m\u1ed9t nguy\u00ean t\u1eafc \u0111\u01a1n gi\u1ea3n: thay v\u00ec s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 l\u1ecdc l\u1edbn, t\u1ed1t h\u01a1n l\u00e0 x\u1ebfp ch\u1ed3ng nhi\u1ec1u b\u1ed9 l\u1ecdc nh\u1ecf 3&#215;3 l\u00ean nhau. V\u00ed d\u1ee5, hai l\u1edbp t\u00edch ch\u1eadp 3&#215;3 li\u00ean ti\u1ebfp c\u00f3 th\u1ec3 bao qu\u00e1t m\u1ed9t v\u00f9ng 5&#215;5, trong khi ba l\u1edbp c\u00f3 th\u1ec3 bao qu\u00e1t v\u00f9ng 7&#215;7. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y kh\u00f4ng ch\u1ec9 gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng tham s\u1ed1 m\u00e0 c\u00f2n t\u0103ng \u0111\u1ed9 s\u00e2u c\u1ee7a m\u1ea1ng, cho ph\u00e9p h\u1ecdc c\u00e1c \u0111\u1eb7c tr\u01b0ng ph\u1ee9c t\u1ea1p h\u01a1n.<\/p><figure id=\"attachment_26438\" aria-describedby=\"caption-attachment-26438\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26438\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Mo-hinh-VGGNet.webp\" alt=\"M\u00f4 h\u00ecnh VGGNet.\" width=\"768\" height=\"424\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Mo-hinh-VGGNet.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Mo-hinh-VGGNet-300x166.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26438\" class=\"wp-caption-text\">M\u00f4 h\u00ecnh VGGNet.<\/figcaption><\/figure><h3><span class=\"ez-toc-section\" id=\"33_ResNet\"><\/span>3.3 ResNet<span class=\"ez-toc-section-end\"><\/span><\/h3><p>ResNet (Residual Network), \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u b\u1edfi nh\u00f3m nghi\u00ean c\u1ee9u c\u1ee7a Microsoft v\u00e0o n\u0103m 2015, \u0111\u00e3 gi\u1ea3i quy\u1ebft m\u1ed9t v\u1ea5n \u0111\u1ec1 l\u1edbn trong vi\u1ec7c hu\u1ea5n luy\u1ec7n c\u00e1c m\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp s\u00e2u: hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t m\u00e1t gradient. Khi m\u1ea1ng qu\u00e1 s\u00e2u, gradient trong qu\u00e1 tr\u00ecnh lan truy\u1ec1n ng\u01b0\u1ee3c c\u00f3 th\u1ec3 tr\u1edf n\u00ean qu\u00e1 nh\u1ecf, khi\u1ebfn vi\u1ec7c hu\u1ea5n luy\u1ec7n tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/p><p>\u0110\u00f3ng g\u00f3p ch\u00ednh c\u1ee7a ResNet l\u00e0 vi\u1ec7c gi\u1edbi thi\u1ec7u &#8220;k\u1ebft n\u1ed1i t\u1eaft&#8221; hay &#8220;k\u1ebft n\u1ed1i d\u01b0 th\u1eeba&#8221;. Thay v\u00ec m\u1ed7i l\u1edbp ch\u1ec9 h\u1ecdc m\u1ed9t \u00e1nh x\u1ea1 tr\u1ef1c ti\u1ebfp t\u1eeb \u0111\u1ea7u v\u00e0o sang \u0111\u1ea7u ra, ResNet cho ph\u00e9p m\u1ed9t s\u1ed1 th\u00f4ng tin &#8220;b\u1ecf qua&#8221; m\u1ed9t s\u1ed1 l\u1edbp v\u00e0 \u0111i th\u1eb3ng \u0111\u1ebfn c\u00e1c l\u1edbp sau. \u0110i\u1ec1u n\u00e0y gi\u00fap gradient c\u00f3 th\u1ec3 di chuy\u1ec3n d\u1ec5 d\u00e0ng h\u01a1n trong qu\u00e1 tr\u00ecnh lan truy\u1ec1n ng\u01b0\u1ee3c, cho ph\u00e9p x\u00e2y d\u1ef1ng c\u00e1c m\u1ea1ng r\u1ea5t s\u00e2u m\u00e0 kh\u00f4ng g\u1eb7p v\u1ea5n \u0111\u1ec1 m\u1ea5t m\u00e1t gradient.<\/p><p>ResNet \u0111\u00e3 gi\u00e0nh chi\u1ebfn th\u1eafng trong cu\u1ed9c thi ImageNet n\u0103m 2015 v\u00e0 \u0111\u1ebfn nay v\u1eabn l\u00e0 m\u1ed9t trong nh\u1eefng ki\u1ebfn tr\u00fac CNN ph\u1ed5 bi\u1ebfn nh\u1ea5t, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t x\u01b0\u01a1ng s\u1ed1ng cho nhi\u1ec1u m\u00f4 h\u00ecnh v\u00e0 <a href=\"https:\/\/vbee.vn\/blog\/ai\/computer-vision\/\">\u1ee9ng d\u1ee5ng th\u1ecb gi\u00e1c m\u00e1y t\u00ednh<\/a> ti\u00ean ti\u1ebfn.<\/p><h3><span class=\"ez-toc-section\" id=\"34_Inception\"><\/span>3.4 Inception<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Inception ban \u0111\u1ea7u \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ean GoogLeNet, l\u00e0 m\u1ed9t ki\u1ebfn tr\u00fac CNN l\u00e0 g\u00ec \u0111\u1ed9t ph\u00e1 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Google v\u00e0o n\u0103m 2014. \u0110i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a M\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp n\u00e0y l\u00e0 thi\u1ebft k\u1ebf &#8220;m\u00f4-\u0111un Inception&#8221; \u0111\u1ed9c \u0111\u00e1o, cho ph\u00e9p m\u1ea1ng x\u1eed l\u00fd th\u00f4ng tin \u1edf nhi\u1ec1u thang \u0111o kh\u00f4ng gian kh\u00e1c nhau.<\/p><p>M\u1ed9t m\u00f4-\u0111un Inception bao g\u1ed3m nhi\u1ec1u nh\u00e1nh song song v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc b\u1ed9 l\u1ecdc kh\u00e1c nhau (1&#215;1, 3&#215;3, 5&#215;5) v\u00e0 m\u1ed9t l\u1edbp g\u1ed9p. \u00dd t\u01b0\u1edfng l\u00e0 cho ph\u00e9p m\u1ea1ng &#8220;quy\u1ebft \u0111\u1ecbnh&#8221; n\u00ean s\u1eed d\u1ee5ng b\u1ed9 l\u1ecdc n\u00e0o t\u1ea1i m\u1ed7i v\u1ecb tr\u00ed, thay v\u00ec thi\u1ebft k\u1ebf c\u1ee9ng nh\u1eafc tr\u01b0\u1edbc. \u0110i\u1ec1u n\u00e0y gi\u00fap m\u00f4 h\u00ecnh c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u1eb7c tr\u01b0ng \u1edf nhi\u1ec1u quy m\u00f4 kh\u00e1c nhau: b\u1ed9 l\u1ecdc nh\u1ecf cho c\u00e1c chi ti\u1ebft c\u1ee5c b\u1ed9, b\u1ed9 l\u1ecdc l\u1edbn cho c\u00e1c m\u1eabu quy m\u00f4 l\u1edbn h\u01a1n.<\/p><figure id=\"attachment_26437\" aria-describedby=\"caption-attachment-26437\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26437\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/mo-hinh-Inception.webp\" alt=\"V\u00ed d\u1ee5 v\u1ec1 m\u00f4 h\u00ecnh Inception.\" width=\"768\" height=\"468\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/mo-hinh-Inception.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/mo-hinh-Inception-300x183.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26437\" class=\"wp-caption-text\">V\u00ed d\u1ee5 v\u1ec1 m\u00f4 h\u00ecnh Inception.<\/figcaption><\/figure><h2><span class=\"ez-toc-section\" id=\"4_Ung_dung_cua_CNN_vao_cuoc_song\"><\/span>4. \u1ee8ng d\u1ee5ng c\u1ee7a CNN v\u00e0o cu\u1ed9c s\u1ed1ng<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"41_Nhan_dien_hinh_anh_va_video\"><\/span>4.1 Nh\u1eadn di\u1ec7n h\u00ecnh \u1ea3nh v\u00e0 video<span class=\"ez-toc-section-end\"><\/span><\/h3><p>M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a l\u0129nh v\u1ef1c nh\u1eadn di\u1ec7n h\u00ecnh \u1ea3nh v\u00e0 x\u1eed l\u00fd video. Trong ph\u00e2n lo\u1ea1i h\u00ecnh \u1ea3nh, CNN c\u00f3 th\u1ec3 nh\u1eadn bi\u1ebft h\u00e0ng ngh\u00ecn lo\u1ea1i \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao. Facebook s\u1eed d\u1ee5ng M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng g\u1eafn th\u1ebb b\u1ea1n b\u00e8 trong \u1ea3nh \u0111\u0103ng t\u1ea3i. <a href=\"https:\/\/vbee.vn\/blog\/google\/google-photos\/\">Google Photos<\/a> s\u1eed d\u1ee5ng CNN \u0111\u1ec3 ph\u00e2n lo\u1ea1i \u1ea3nh theo n\u1ed9i dung, cho ph\u00e9p t\u00ecm ki\u1ebfm \u1ea3nh m\u00e0 kh\u00f4ng c\u1ea7n g\u1eafn th\u1ebb th\u1ee7 c\u00f4ng.<\/p><p>Trong ph\u00e2n \u0111o\u1ea1n h\u00ecnh \u1ea3nh, m\u1ea1ng nh\u01b0 U-Net, d\u1ef1a tr\u00ean ki\u1ebfn tr\u00fac CNN, c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t t\u1eebng <a href=\"https:\/\/vbee.vn\/blog\/google\/google-pixel\/\">pixel<\/a> thu\u1ed9c v\u1ec1 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o. C\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c \u1ee9ng d\u1ee5ng <a href=\"https:\/\/vbee.vn\/blog\/chuyen-van-ban-thanh-giong-noi\/linh-vuc\/y-te\/\">y t\u1ebf<\/a> nh\u01b0 ph\u00e2n t\u00edch \u1ea3nh MRI ho\u1eb7c trong c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ec9nh s\u1eeda \u1ea3nh nh\u01b0 t\u1ef1 \u0111\u1ed9ng t\u00e1ch n\u1ec1n.<\/p><h3><span class=\"ez-toc-section\" id=\"42_Xu_ly_ngon_ngu_tu_nhien\"><\/span>4.2 X\u1eed l\u00fd ng\u00f4n ng\u1eef t\u1ef1 nhi\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h3><p>M\u1eb7c d\u00f9 M\u1ea1ng th\u1ea7n kinh t\u00edch ch\u1eadp ban \u0111\u1ea7u \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n cho x\u1eed l\u00fd h\u00ecnh \u1ea3nh, ch\u00fang c\u0169ng \u0111\u00e3 ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 \u0111\u00e1ng ng\u1ea1c nhi\u00ean trong <a href=\"https:\/\/vbee.vn\/blog\/ai\/xu-ly-ngon-ngu-tu-nhien-nlp\/\">x\u1eed l\u00fd ng\u00f4n ng\u1eef t\u1ef1 nhi\u00ean<\/a> (NLP). Trong l\u0129nh v\u1ef1c n\u00e0y, CNN ho\u1ea1t \u0111\u1ed9ng tr\u00ean d\u1eef li\u1ec7u v\u0103n b\u1ea3n \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng vector ho\u1eb7c ma tr\u1eadn.<\/p><p>Trong ph\u00e2n lo\u1ea1i v\u0103n b\u1ea3n, CNN c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u1ee7 \u0111\u1ec1, t\u00ecnh c\u1ea3m, ho\u1eb7c \u00fd \u0111\u1ecbnh c\u1ee7a m\u1ed9t \u0111o\u1ea1n v\u0103n. V\u00ed d\u1ee5, c\u00e1c c\u00f4ng ty th\u01b0\u1eddng s\u1eed d\u1ee5ng CNN \u0111\u1ec3 ph\u00e2n t\u00edch \u0111\u00e1nh gi\u00e1 c\u1ee7a kh\u00e1ch h\u00e0ng ho\u1eb7c b\u00e0i \u0111\u0103ng tr\u00ean m\u1ea1ng x\u00e3 h\u1ed9i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ecnh c\u1ea3m t\u00edch c\u1ef1c hay ti\u00eau c\u1ef1c.<\/p><figure id=\"attachment_26440\" aria-describedby=\"caption-attachment-26440\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26440\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Ung-dung-cua-CNN-vao-cuoc-song.webp\" alt=\"\u1ee8ng d\u1ee5ng c\u1ee7a CNN v\u00e0o x\u1eed l\u00fd ng\u00f4n ng\u1eef t\u1ef1 nhi\u00ean.\" width=\"768\" height=\"406\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Ung-dung-cua-CNN-vao-cuoc-song.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Ung-dung-cua-CNN-vao-cuoc-song-300x159.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26440\" class=\"wp-caption-text\">\u1ee8ng d\u1ee5ng c\u1ee7a CNN v\u00e0o x\u1eed l\u00fd ng\u00f4n ng\u1eef t\u1ef1 nhi\u00ean.<\/figcaption><\/figure><h3><span class=\"ez-toc-section\" id=\"43_Y_te_va_chan_doan_hinh_anh\"><\/span>4.3 Y t\u1ebf v\u00e0 ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh<span class=\"ez-toc-section-end\"><\/span><\/h3><p>L\u0129nh v\u1ef1c y t\u1ebf \u0111\u00e3 ch\u1ee9ng ki\u1ebfn m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng nh\u1ecf nh\u1edd \u1ee9ng d\u1ee5ng c\u1ee7a M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp trong ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh. CNN gi\u00fap c\u00e1c b\u00e1c s\u0129 ph\u00e2n t\u00edch nhanh ch\u00f3ng v\u00e0 ch\u00ednh x\u00e1c c\u00e1c lo\u1ea1i h\u00ecnh \u1ea3nh y t\u1ebf kh\u00e1c nhau.<\/p><p>Trong ch\u1ea9n \u0111o\u00e1n ung th\u01b0, CNN c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c kh\u1ed1i u nh\u1ecf tr\u00ean \u1ea3nh X-quang, CT scan ho\u1eb7c MRI m\u00e0 th\u1eadm ch\u00ed c\u00e1c b\u00e1c s\u0129 c\u00f3 kinh nghi\u1ec7m c\u0169ng c\u00f3 th\u1ec3 b\u1ecf qua. Nghi\u00ean c\u1ee9u cho th\u1ea5y m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng CNN \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ho\u1eb7c th\u1eadm ch\u00ed cao h\u01a1n c\u00e1c b\u00e1c s\u0129 chuy\u00ean khoa trong vi\u1ec7c ph\u00e1t hi\u1ec7n ung th\u01b0 ph\u1ed5i, ung th\u01b0 da v\u00e0 nhi\u1ec1u lo\u1ea1i kh\u00e1c.<\/p><p>L\u1ee3i \u00edch l\u1edbn nh\u1ea5t c\u1ee7a CNN trong y t\u1ebf l\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh nhanh ch\u00f3ng, gi\u1ea3m \u00e1p l\u1ef1c cho b\u00e1c s\u0129 v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian ch\u1ea9n \u0111o\u00e1n, \u0111\u1ed3ng th\u1eddi t\u0103ng kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n s\u1edbm c\u00e1c b\u1ec7nh l\u00fd nghi\u00eam tr\u1ecdng.<\/p><h3><span class=\"ez-toc-section\" id=\"44_O_to_tu_lai_va_cong_nghe_an_ninh\"><\/span>4.4 \u00d4 t\u00f4 t\u1ef1 l\u00e1i v\u00e0 c\u00f4ng ngh\u1ec7 an ninh<span class=\"ez-toc-section-end\"><\/span><\/h3><p>C\u00f4ng ngh\u1ec7 \u00f4 t\u00f4 t\u1ef1 l\u00e1i ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o CNN v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd h\u00ecnh \u1ea3nh c\u1ee7a n\u00f3. C\u00e1c h\u1ec7 th\u1ed1ng th\u1ecb gi\u00e1c d\u1ef1a tr\u00ean M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp gi\u00fap <a href=\"https:\/\/vbee.vn\/blog\/nvidia\/nvidia-drive\/\">xe t\u1ef1 l\u00e1i<\/a> &#8220;nh\u00ecn&#8221; v\u00e0 &#8220;hi\u1ec3u&#8221; m\u00f4i tr\u01b0\u1eddng xung quanh.<\/p><p>Trong nh\u1eadn di\u1ec7n l\u00e0n \u0111\u01b0\u1eddng, CNN ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh t\u1eeb camera \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed l\u00e0n \u0111\u01b0\u1eddng, gi\u00fap xe duy tr\u00ec v\u1ecb tr\u00ed \u0111\u00fang. Trong ph\u00e1t hi\u1ec7n v\u1eadt c\u1ea3n, m\u00f4 h\u00ecnh CNN x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u c\u1ea3m bi\u1ebfn (camera, radar, lidar) \u0111\u1ec3 nh\u1eadn di\u1ec7n ng\u01b0\u1eddi \u0111i b\u1ed9, xe kh\u00e1c, v\u00e0 c\u00e1c ch\u01b0\u1edbng ng\u1ea1i v\u1eadt kh\u00e1c. H\u1ec7 th\u1ed1ng n\u00e0y c\u0169ng nh\u1eadn di\u1ec7n bi\u1ec3n b\u00e1o giao th\u00f4ng, \u0111\u00e8n t\u00edn hi\u1ec7u \u0111\u1ec3 tu\u00e2n th\u1ee7 lu\u1eadt giao th\u00f4ng.<\/p><p>Trong l\u0129nh v\u1ef1c an ninh, M\u1ea1ng n\u01a1-ron t\u00edch ch\u1eadp \u0111\u00e3 tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu. H\u1ec7 th\u1ed1ng nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t s\u1eed d\u1ee5ng CNN \u0111\u01b0\u1ee3c tri\u1ec3n khai t\u1ea1i s\u00e2n bay, ga t\u00e0u v\u00e0 khu v\u1ef1c c\u00f4ng c\u1ed9ng \u0111\u1ec3 nh\u1eadn di\u1ec7n \u0111\u1ed1i t\u01b0\u1ee3ng nghi ng\u1edd. C\u00e1c camera th\u00f4ng minh t\u00edch h\u1ee3p CNN c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n h\u00e0nh vi \u0111\u00e1ng ng\u1edd nh\u01b0 tr\u1ed9m c\u1eafp ho\u1eb7c b\u1ea1o l\u1ef1c.<\/p><figure id=\"attachment_26439\" aria-describedby=\"caption-attachment-26439\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26439\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Ung-dung-CNN-vao-o-to-tu-lai.webp\" alt=\"\u1ee8ng d\u1ee5ng CNN v\u00e0o \u00f4 t\u00f4 t\u1ef1 l\u00e1i.\" width=\"768\" height=\"305\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Ung-dung-CNN-vao-o-to-tu-lai.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Ung-dung-CNN-vao-o-to-tu-lai-300x119.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26439\" class=\"wp-caption-text\">\u1ee8ng d\u1ee5ng CNN v\u00e0o \u00f4 t\u00f4 t\u1ef1 l\u00e1i.<\/figcaption><\/figure><h2><span class=\"ez-toc-section\" id=\"5_Uu_diem_va_han_che_cua_CNN\"><\/span>5. \u01afu \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a CNN<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"51_Uu_diem\"><\/span>5.1 \u01afu \u0111i\u1ec3m<span class=\"ez-toc-section-end\"><\/span><\/h3><ul><li>Kh\u00f4ng c\u1ea7n ti\u1ec1n x\u1eed l\u00fd ph\u1ee9c t\u1ea1p, CNN t\u1ef1 h\u1ecdc c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m quan tr\u1ecdng t\u1eeb d\u1eef li\u1ec7u th\u00f4.<\/li><li>Hi\u1ec7u qu\u1ea3 cao v\u1edbi d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh, video, gi\u1ecdng n\u00f3i nh\u1edd kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n m\u1eabu kh\u00f4ng gian.<\/li><li>Gi\u1ea3m s\u1ed1 tham s\u1ed1 c\u1ea7n h\u1ecdc nh\u1edd c\u01a1 ch\u1ebf chia s\u1ebb tr\u1ecdng s\u1ed1 (weight sharing) v\u00e0 pooling.<\/li><li>Kh\u1ea3 n\u0103ng h\u1ecdc \u0111\u1eb7c tr\u01b0ng ph\u00e2n c\u1ea5p: T\u1eeb c\u1ea1nh, g\u00f3c \u2192 h\u00ecnh d\u1ea1ng \u2192 \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li><li>Kh\u1ea3 n\u0103ng kh\u00e1i qu\u00e1t h\u00f3a t\u1ed1t n\u1ebfu \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n tr\u00ean t\u1eadp d\u1eef li\u1ec7u \u0111\u1ee7 l\u1edbn.<\/li><\/ul><h3><span class=\"ez-toc-section\" id=\"52_Han_che\"><\/span>5.2 H\u1ea1n ch\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h3><ul><li>Y\u00eau c\u1ea7u <a href=\"https:\/\/vbee.vn\/blog\/ai\/cong-nghe-nen-tang-cua-ai\/\">d\u1eef li\u1ec7u l\u1edbn<\/a> \u0111\u1ec3 tr\u00e1nh overfitting v\u00e0 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao.<\/li><li>Chi ph\u00ed t\u00ednh to\u00e1n cao, \u0111\u00f2i h\u1ecfi GPU m\u1ea1nh v\u00e0 nhi\u1ec1u t\u00e0i nguy\u00ean.<\/li><li>Kh\u00f3 gi\u1ea3i th\u00edch (black-box): Kh\u00f3 bi\u1ebft t\u1ea1i sao m\u00f4 h\u00ecnh \u0111\u01b0a ra d\u1ef1 \u0111o\u00e1n.<\/li><li>Kh\u00f4ng t\u1ed1i \u01b0u cho d\u1eef li\u1ec7u chu\u1ed7i d\u00e0i ho\u1eb7c quan h\u1ec7 ng\u1eef c\u1ea3nh ph\u1ee9c t\u1ea1p, c\u1ea7n k\u1ebft h\u1ee3p RNN\/Transformer.<\/li><li>D\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng \u0111\u1ed1i kh\u00e1ng (adversarial attack): Thay \u0111\u1ed5i nh\u1ecf trong d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u00e0m sai k\u1ebft qu\u1ea3.<\/li><\/ul><h2><span class=\"ez-toc-section\" id=\"6_Cach_chon_tham_so_cho_CNN\"><\/span>6. C\u00e1ch ch\u1ecdn tham s\u1ed1 cho CNN<span class=\"ez-toc-section-end\"><\/span><\/h2><ul><li>K\u00edch th\u01b0\u1edbc b\u1ed9 l\u1ecdc (Filter size): Th\u01b0\u1eddng d\u00f9ng 3\u00d73 ho\u1eb7c 5\u00d75. C\u00f3 th\u1ec3 x\u1ebfp ch\u1ed3ng nhi\u1ec1u 3\u00d73 thay cho filter l\u1edbn (nh\u01b0 trong VGG).<\/li><li>S\u1ed1 l\u01b0\u1ee3ng b\u1ed9 l\u1ecdc (Number of filters): T\u0103ng d\u1ea7n theo l\u1edbp, l\u1edbp \u0111\u1ea7u \u00edt (16\u201364), l\u1edbp s\u00e2u nhi\u1ec1u (128\u2013512).<\/li><li>B\u01b0\u1edbc nh\u1ea3y (Stride): Th\u01b0\u1eddng =1 cho convolution, =2 cho pooling.<\/li><li>Padding: Same &#8211; gi\u1eef nguy\u00ean k\u00edch th\u01b0\u1edbc, Valid &#8211; gi\u1ea3m k\u00edch th\u01b0\u1edbc.<\/li><li>Pooling size: 2\u00d72 v\u1edbi Max Pooling l\u00e0 ph\u1ed5 bi\u1ebfn, 3\u00d73 \u00edt d\u00f9ng.<\/li><li>S\u1ed1 l\u1edbp convolution\/pooling: 2\u20134 l\u1edbp cho d\u1eef li\u1ec7u nh\u1ecf (MNIST), 10\u201350+ cho d\u1eef li\u1ec7u l\u1edbn.<\/li><li>Fully connected: Gi\u1ea3m d\u1ea7n s\u1ed1 n\u01a1-ron, ho\u1eb7c thay b\u1eb1ng Global Average Pooling \u0111\u1ec3 gi\u1ea3m tham s\u1ed1.<\/li><li>H\u00e0m k\u00edch ho\u1ea1t: ReLU l\u00e0 m\u1eb7c \u0111\u1ecbnh; Leaky ReLU\/ELU khi g\u1eb7p dying ReLU; Softmax \u1edf l\u1edbp \u0111\u1ea7u ra.<\/li><li>Dropout: 0.2\u20130.5, th\u01b0\u1eddng d\u00f9ng \u1edf fully connected \u0111\u1ec3 tr\u00e1nh overfitting.<\/li><li>Learning rate: B\u1eaft \u0111\u1ea7u 0.001 v\u1edbi Adam\/SGD+momentum, gi\u1ea3m d\u1ea7n ho\u1eb7c d\u00f9ng b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 h\u1ecdc.<\/li><\/ul><figure id=\"attachment_26433\" aria-describedby=\"caption-attachment-26433\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-26433\" src=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Cach-chon-tham-so-cho-CNN.webp\" alt=\"C\u00e1ch l\u1ef1a ch\u1ecdn tham s\u1ed1 cho CNN.\" width=\"768\" height=\"285\" title=\"\" srcset=\"https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Cach-chon-tham-so-cho-CNN.webp 768w, https:\/\/vbee.vn\/blog\/wp-content\/uploads\/2025\/08\/Cach-chon-tham-so-cho-CNN-300x111.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-26433\" class=\"wp-caption-text\">C\u00e1ch l\u1ef1a ch\u1ecdn tham s\u1ed1 cho CNN.<\/figcaption><\/figure><h2><span class=\"ez-toc-section\" id=\"7_Cau_hoi_thuong_gap_ve_CNN\"><\/span>7. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 CNN<span class=\"ez-toc-section-end\"><\/span><\/h2><h3><span class=\"ez-toc-section\" id=\"71_CNN_khac_gi_voi_mang_no-ron_thong_thuong\"><\/span>7.1 CNN kh\u00e1c g\u00ec v\u1edbi m\u1ea1ng n\u01a1-ron th\u00f4ng th\u01b0\u1eddng?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>CNN d\u00f9ng l\u1edbp t\u00edch ch\u1eadp \u0111\u1ec3 tr\u00edch xu\u1ea5t \u0111\u1eb7c tr\u01b0ng kh\u00f4ng gian nh\u01b0 c\u1ea1nh, g\u00f3c v\u00e0 chia s\u1ebb tr\u1ecdng s\u1ed1, gi\u00fap x\u1eed l\u00fd h\u00ecnh \u1ea3nh hi\u1ec7u qu\u1ea3 h\u01a1n m\u1ea1ng n\u01a1-ron \u0111\u1ea7y \u0111\u1ee7, v\u1ed1n c\u1ea7n nhi\u1ec1u tham s\u1ed1 h\u01a1n v\u00e0 kh\u00f4ng t\u1eadn d\u1ee5ng c\u1ea5u tr\u00fac kh\u00f4ng gian.<\/p><h3><span class=\"ez-toc-section\" id=\"72_Lop_tich_chap_trong_CNN_lam_gi\"><\/span>7.2 L\u1edbp t\u00edch ch\u1eadp trong CNN l\u00e0m g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>L\u1edbp t\u00edch ch\u1eadp \u00e1p d\u1ee5ng c\u00e1c b\u1ed9 l\u1ecdc l\u00ean h\u00ecnh \u1ea3nh \u0111\u1ec3 tr\u00edch xu\u1ea5t \u0111\u1eb7c tr\u01b0ng nh\u01b0 c\u1ea1nh, g\u00f3c, ho\u1eb7c m\u1eabu ph\u1ee9c t\u1ea1p, t\u1ea1o ra c\u00e1c b\u1ea3n \u0111\u1ed3 \u0111\u1eb7c tr\u01b0ng.<\/p><h3><span class=\"ez-toc-section\" id=\"73_Tai_sao_can_lop_gop_pooling\"><\/span>7.3 T\u1ea1i sao c\u1ea7n l\u1edbp g\u1ed9p (pooling)?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>L\u1edbp g\u1ed9p (nh\u01b0 Max Pooling) gi\u1ea3m k\u00edch th\u01b0\u1edbc d\u1eef li\u1ec7u, gi\u1eef l\u1ea1i \u0111\u1eb7c tr\u01b0ng quan tr\u1ecdng, gi\u00fap gi\u1ea3m chi ph\u00ed t\u00ednh to\u00e1n v\u00e0 ng\u0103n overfitting.<\/p><h3><span class=\"ez-toc-section\" id=\"74_Lam_sao_chon_kich_thuoc_va_so_luong_bo_loc\"><\/span>7.4 L\u00e0m sao ch\u1ecdn k\u00edch th\u01b0\u1edbc v\u00e0 s\u1ed1 l\u01b0\u1ee3ng b\u1ed9 l\u1ecdc?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>K\u00edch th\u01b0\u1edbc b\u1ed9 l\u1ecdc: Th\u01b0\u1eddng d\u00f9ng 3&#215;3 cho \u0111\u1eb7c tr\u01b0ng c\u1ee5c b\u1ed9, 5&#215;5 cho \u0111\u1eb7c tr\u01b0ng l\u1edbn h\u01a1n.<\/p><p>S\u1ed1 l\u01b0\u1ee3ng b\u1ed9 l\u1ecdc: T\u0103ng d\u1ea7n qua c\u00e1c l\u1edbp (v\u00ed d\u1ee5: 32, 64, 128) \u0111\u1ec3 h\u1ecdc \u0111\u1eb7c tr\u01b0ng ph\u1ee9c t\u1ea1p. Th\u1eed nghi\u1ec7m d\u1ef1a tr\u00ean d\u1eef li\u1ec7u.<\/p><h3><span class=\"ez-toc-section\" id=\"75_Tai_sao_CNN_tot_cho_hinh_anh\"><\/span>7.5 T\u1ea1i sao CNN t\u1ed1t cho h\u00ecnh \u1ea3nh?<span class=\"ez-toc-section-end\"><\/span><\/h3><p>CNN t\u1eadn d\u1ee5ng c\u1ea5u tr\u00fac kh\u00f4ng gian, chia s\u1ebb tr\u1ecdng s\u1ed1 qua b\u1ed9 l\u1ecdc, v\u00e0 b\u1ea5t bi\u1ebfn v\u1edbi v\u1ecb tr\u00ed\/di chuy\u1ec3n nh\u1edd pooling, ph\u00f9 h\u1ee3p v\u1edbi d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh.<\/p><p>Nh\u01b0 v\u1eady, CNN (Convolutional Neural Network) l\u00e0 n\u1ec1n t\u1ea3ng quan tr\u1ecdng c\u1ee7a Deep Learning, gi\u00fap m\u00e1y t\u00ednh t\u1ef1 \u0111\u1ed9ng tr\u00edch xu\u1ea5t \u0111\u1eb7c tr\u01b0ng v\u00e0 nh\u1eadn di\u1ec7n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3. Hi\u1ec3u r\u00f5 CNN l\u00e0 g\u00ec, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng s\u1ebd gi\u00fap b\u1ea1n n\u1eafm v\u1eefng c\u00f4ng ngh\u1ec7 c\u1ed1t l\u00f5i \u0111\u1ee9ng sau nhi\u1ec1u ti\u1ebfn b\u1ed9 c\u1ee7a <a href=\"https:\/\/vbee.vn\/blog\/ai\/\">tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o<\/a> hi\u1ec7n nay.<\/p>","protected":false},"excerpt":{"rendered":"<p>CNN l\u00e0 m\u1ed9t trong nh\u1eefng th\u00e0nh t\u1ef1u quan tr\u1ecdng nh\u1ea5t c\u1ee7a Deep Learning, gi\u00fap m\u00e1y t\u00ednh c\u00f3 kh\u1ea3 n\u0103ng h\u1ecdc v\u00e0 tr\u00edch xu\u1ea5t \u0111\u1eb7c tr\u01b0ng t\u1eeb d\u1eef li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd c\u00f9ng b\u1ea1n t\u00ecm hi\u1ec3u chi ti\u1ebft CNN l\u00e0 g\u00ec v\u00e0 c\u00e1c th\u00f4ng tin v\u1ec1 c\u1ea5u tr\u00fac, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, m\u00f4 h\u00ecnh ti\u00eau bi\u1ec3u&#8230;<\/p>\n","protected":false},"author":17,"featured_media":26441,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[133],"tags":[],"class_list":["post-26430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chia-se"],"_links":{"self":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts\/26430","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/comments?post=26430"}],"version-history":[{"count":5,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts\/26430\/revisions"}],"predecessor-version":[{"id":26444,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/posts\/26430\/revisions\/26444"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/media\/26441"}],"wp:attachment":[{"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/media?parent=26430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/categories?post=26430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vbee.vn\/blog\/wp-json\/wp\/v2\/tags?post=26430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}