{"id":8570,"date":"2026-09-13T00:42:26","date_gmt":"2026-09-12T17:42:26","guid":{"rendered":"https:\/\/docx247.com\/?post_type=product&#038;p=8570"},"modified":"2026-09-13T13:11:03","modified_gmt":"2026-09-13T06:11:03","slug":"nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","status":"publish","type":"product","link":"https:\/\/docx247.com\/en\/tai-lieu\/nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu\/","title":{"rendered":"Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU \u2013 \u0110\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i (File DOCX)"},"content":{"rendered":"<p><strong>\ud83d\udcd8 NH\u1eacP M\u00d4N KHAI PH\u00c1 D\u1eee LI\u1ec6U V\u00c0 M\u00c1Y H\u1eccC VNU \u2013 \u0110\u00c1P \u00c1N TR\u1eaeC NGHI\u1ec6M \u0110\u1ea0I H\u1eccC QU\u1ed0C GIA H\u00c0 N\u1ed8I<\/strong><\/p>\n<p><strong>\ud83d\udc41 XEM TR\u01af\u1edaC 20\u201330% N\u1ed8I DUNG<\/strong><\/p>\n<p>Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 xem tr\u01b0\u1edbc kho\u1ea3ng 20\u201330% n\u1ed9i dung c\u1ee7a t\u00e0i li\u1ec7u 55 trang tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh t\u1ea3i b\u1ea3n \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<p>Ph\u1ea7n xem tr\u01b0\u1edbc gi\u00fap ki\u1ec3m tra:<\/p>\n<ul>\n<li>C\u1ea5u tr\u00fac t\u00e0i li\u1ec7u.<\/li>\n<li>C\u00e1ch tr\u00ecnh b\u00e0y.<\/li>\n<li>D\u1ea1ng c\u00e2u h\u1ecfi.<\/li>\n<li>C\u00e1ch b\u1ed1 tr\u00ed \u0111\u00e1p \u00e1n.<\/li>\n<li>M\u1ed9t ph\u1ea7n n\u1ed9i dung th\u1ef1c t\u1ebf c\u1ee7a t\u00e0i li\u1ec7u.<\/li>\n<\/ul>\n<p><strong>\ud83d\udce5 NH\u1eacN FILE DOCX \u0110\u1ea6Y \u0110\u1ee6<\/strong><\/p>\n<p>Sau khi thanh to\u00e1n th\u00e0nh c\u00f4ng, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1ea3i file DOCX \u0111\u1ea7y \u0111\u1ee7 55 trang v\u1ec1 m\u00e1y \u0111\u1ec3 s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp, luy\u1ec7n t\u1eadp v\u00e0 \u00f4n thi.<\/p>\n<p><strong>\ud83d\udcb3 THANH TO\u00c1N QUA VNPAY<\/strong><\/p>\n<p>Thanh to\u00e1n nhanh ch\u00f3ng, thu\u1eadn ti\u1ec7n qua VNPAY. Sau khi giao d\u1ecbch th\u00e0nh c\u00f4ng, h\u1ec7 th\u1ed1ng cung c\u1ea5p t\u00e0i li\u1ec7u \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng t\u1ea3i xu\u1ed1ng.<\/p>\n<p><strong>\ud83c\udfaf \u00d4N \u0110\u00daNG TR\u1eccNG T\u00c2M \u2013 TRA C\u1ee8U NHANH \u2013 TI\u1ebeT KI\u1ec6M TH\u1edcI GIAN<\/strong><\/p>\n<p>T\u00e0i li\u1ec7u \u0110\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU \u2013 \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i g\u1ed3m 55 trang, \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb nh\u1eb1m h\u1ed7 tr\u1ee3 sinh vi\u00ean luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi, ki\u1ec3m tra \u0111\u00e1p \u00e1n, h\u1ec7 th\u1ed1ng h\u00f3a ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m v\u00e0 h\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/p>\n<p>\ud83e\udd16 Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc l\u00e0 m\u00f4n h\u1ecdc cung c\u1ea5p ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng v\u1ec1 qu\u00e1 tr\u00ecnh thu th\u1eadp, ti\u1ec1n x\u1eed l\u00fd, ph\u00e2n t\u00edch v\u00e0 khai th\u00e1c th\u00f4ng tin t\u1eeb d\u1eef li\u1ec7u, \u0111\u1ed3ng th\u1eddi gi\u1edbi thi\u1ec7u c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00e1y h\u1ecdc c\u01a1 b\u1ea3n gi\u00fap m\u00e1y t\u00ednh h\u1ecdc t\u1eeb d\u1eef li\u1ec7u v\u00e0 th\u1ef1c hi\u1ec7n d\u1ef1 \u0111o\u00e1n ho\u1eb7c ph\u00e2n lo\u1ea1i.<\/p>\n<p>C\u00e1c n\u1ed9i dung th\u01b0\u1eddng g\u1eb7p c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u v\u00e0 thu\u1ed9c t\u00ednh, ti\u1ec1n x\u1eed l\u00fd d\u1eef li\u1ec7u, ph\u00e2n chia t\u1eadp d\u1eef li\u1ec7u, h\u1ecdc c\u00f3 gi\u00e1m s\u00e1t, h\u1ecdc kh\u00f4ng gi\u00e1m s\u00e1t, ph\u00e2n lo\u1ea1i, h\u1ed3i quy, ph\u00e2n c\u1ee5m, c\u00e2y quy\u1ebft \u0111\u1ecbnh, k-nearest neighbors, Bayes, \u0111\u00e1nh gi\u00e1 m\u00f4 h\u00ecnh, overfitting, underfitting v\u00e0 m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m n\u1ec1n t\u1ea3ng c\u1ee7a qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh m\u00e1y h\u1ecdc.<\/p>\n<p>T\u00e0i li\u1ec7u gi\u00fap sinh vi\u00ean ch\u1ee7 \u0111\u1ed9ng r\u00e0 so\u00e1t ki\u1ebfn th\u1ee9c, luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m, nh\u1eadn di\u1ec7n nh\u1eefng n\u1ed9i dung c\u00f2n ch\u01b0a ch\u1eafc v\u00e0 chu\u1ea9n b\u1ecb t\u1ed1t h\u01a1n cho ki\u1ec3m tra ho\u1eb7c thi k\u1ebft th\u00fac h\u1ecdc ph\u1ea7n.<\/p>\n<p><strong>\u2705 T\u00c0I LI\u1ec6U H\u1ed6 TR\u1ee2:<\/strong><\/p>\n<ul>\n<li>Luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m theo t\u1eebng nh\u00f3m ki\u1ebfn th\u1ee9c.<\/li>\n<li>Ki\u1ec3m tra v\u00e0 \u0111\u1ed1i chi\u1ebfu \u0111\u00e1p \u00e1n nhanh ch\u00f3ng.<\/li>\n<li>H\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c v\u1ec1 khai ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<li>C\u1ee7ng c\u1ed1 c\u00e1c kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 d\u1eef li\u1ec7u.<\/li>\n<li>\u00d4n t\u1eadp ti\u1ec1n x\u1eed l\u00fd v\u00e0 l\u00e0m s\u1ea1ch d\u1eef li\u1ec7u.<\/li>\n<li>Ph\u00e2n bi\u1ec7t h\u1ecdc c\u00f3 gi\u00e1m s\u00e1t v\u00e0 h\u1ecdc kh\u00f4ng gi\u00e1m s\u00e1t.<\/li>\n<li>C\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c v\u1ec1 b\u00e0i to\u00e1n ph\u00e2n lo\u1ea1i.<\/li>\n<li>\u00d4n t\u1eadp b\u00e0i to\u00e1n h\u1ed3i quy.<\/li>\n<li>H\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c v\u1ec1 ph\u00e2n c\u1ee5m d\u1eef li\u1ec7u.<\/li>\n<li>C\u1ee7ng c\u1ed1 c\u00e2y quy\u1ebft \u0111\u1ecbnh.<\/li>\n<li>\u00d4n t\u1eadp thu\u1eadt to\u00e1n k-nearest neighbors.<\/li>\n<li>Hi\u1ec3u c\u00e1c kh\u00e1i ni\u1ec7m x\u00e1c su\u1ea5t v\u00e0 Bayes c\u01a1 b\u1ea3n trong m\u00e1y h\u1ecdc.<\/li>\n<li>Ph\u00e2n bi\u1ec7t t\u1eadp hu\u1ea5n luy\u1ec7n v\u00e0 t\u1eadp ki\u1ec3m tra.<\/li>\n<li>C\u1ee7ng c\u1ed1 c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u00e1nh gi\u00e1 m\u00f4 h\u00ecnh.<\/li>\n<li>Ph\u00e2n bi\u1ec7t overfitting v\u00e0 underfitting.<\/li>\n<li>\u00d4n t\u1eadp quy tr\u00ecnh x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh m\u00e1y h\u1ecdc.<\/li>\n<li>Nh\u1eadn di\u1ec7n nh\u1eefng ph\u1ea7n ki\u1ebfn th\u1ee9c c\u00f2n y\u1ebfu.<\/li>\n<li>Ti\u1ebft ki\u1ec7m th\u1eddi gian t\u1ef1 t\u1ed5ng h\u1ee3p c\u00e2u h\u1ecfi v\u00e0 \u0111\u00e1p \u00e1n.<\/li>\n<li>H\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n<p><strong>\ud83d\udcc4 FILE DOCX 55 TRANG THU\u1eacN TI\u1ec6N S\u1eec D\u1ee4NG<\/strong><\/p>\n<p>T\u00e0i li\u1ec7u \u0111\u01b0\u1ee3c cung c\u1ea5p d\u01b0\u1edbi \u0111\u1ecbnh d\u1ea1ng DOCX g\u1ed3m 55 trang, thu\u1eadn ti\u1ec7n \u0111\u1ec3:<\/p>\n<ul>\n<li>T\u1ea3i v\u00e0 l\u01b0u tr\u1eef tr\u00ean m\u00e1y t\u00ednh.<\/li>\n<li>T\u00ecm ki\u1ebfm nhanh t\u1eeb kh\u00f3a.<\/li>\n<li>Tra c\u1ee9u c\u00e2u h\u1ecfi v\u00e0 \u0111\u00e1p \u00e1n.<\/li>\n<li>S\u1eed d\u1ee5ng b\u1eb1ng Microsoft Word ho\u1eb7c ph\u1ea7n m\u1ec1m h\u1ed7 tr\u1ee3 DOCX.<\/li>\n<li>Ghi ch\u00fa nh\u1eefng thu\u1eadt to\u00e1n v\u00e0 kh\u00e1i ni\u1ec7m c\u1ea7n \u00f4n l\u1ea1i.<\/li>\n<li>H\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c theo t\u1eebng nh\u00f3m ch\u1ee7 \u0111\u1ec1.<\/li>\n<li>\u00d4n t\u1eadp nhi\u1ec1u l\u1ea7n khi c\u1ea7n.<\/li>\n<\/ul>\n<p><strong>\ud83c\udf93 T\u00c0I LI\u1ec6U PH\u00d9 H\u1ee2P V\u1edaI:<\/strong><\/p>\n<ul>\n<li>Sinh vi\u00ean \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i \u0111ang h\u1ecdc m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh C\u00f4ng ngh\u1ec7 th\u00f4ng tin.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh Khoa h\u1ecdc m\u00e1y t\u00ednh.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh Khoa h\u1ecdc d\u1eef li\u1ec7u.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh H\u1ec7 th\u1ed1ng th\u00f4ng tin.<\/li>\n<li>Sinh vi\u00ean c\u00e1c ng\u00e0nh li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u v\u00e0 tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o.<\/li>\n<li>Sinh vi\u00ean c\u1ea7n c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng v\u1ec1 khai ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<li>Sinh vi\u00ean c\u1ea7n l\u00e0m quen v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00e1y h\u1ecdc c\u01a1 b\u1ea3n.<\/li>\n<li>Sinh vi\u00ean c\u1ea7n luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m.<\/li>\n<li>Sinh vi\u00ean c\u1ea7n ki\u1ec3m tra v\u00e0 \u0111\u1ed1i chi\u1ebfu \u0111\u00e1p \u00e1n.<\/li>\n<li>Sinh vi\u00ean chu\u1ea9n b\u1ecb ki\u1ec3m tra gi\u1eefa k\u1ef3 ho\u1eb7c thi k\u1ebft th\u00fac h\u1ecdc ph\u1ea7n.<\/li>\n<li>Ng\u01b0\u1eddi h\u1ecdc c\u1ea7n t\u00e0i li\u1ec7u h\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n<p><strong>\ud83d\udd0e T\u1eea KH\u00d3A LI\u00caN QUAN:<\/strong><\/p>\n<ul>\n<li>VNU<\/li>\n<li>\u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<li>Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/li>\n<li>Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU \u0111\u00e1p \u00e1n<\/li>\n<li>m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/li>\n<li>\u0111\u00e1p \u00e1n m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/li>\n<li>\u0111\u00e1p \u00e1n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/li>\n<li>tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/li>\n<li>\u0111\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/li>\n<li>tr\u1eafc nghi\u1ec7m m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/li>\n<li>Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<li>Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i \u0111\u00e1p \u00e1n<\/li>\n<li>m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<li>\u0111\u00e1p \u00e1n m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<li>\u0111\u00e1p \u00e1n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<li>tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<li>\u0111\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<li>tr\u1eafc nghi\u1ec7m m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udcd8 \u0110\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU \u2013 \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i (File DOCX 55 trang).<\/p>\n<p>\u2705 H\u1ed7 tr\u1ee3 luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi, ki\u1ec3m tra \u0111\u00e1p \u00e1n, h\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c khai ph\u00e1 d\u1eef li\u1ec7u, m\u00e1y h\u1ecdc v\u00e0 h\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/p>\n<p>\ud83d\udc41 Xem tr\u01b0\u1edbc kho\u1ea3ng 20\u201330% n\u1ed9i dung c\u1ee7a to\u00e0n b\u1ed9 t\u00e0i li\u1ec7u.<\/p>\n<p>\ud83d\udcb3 Thanh to\u00e1n thu\u1eadn ti\u1ec7n qua VNPAY.<\/p>\n<p>\ud83d\udce5 Nh\u1eadn file DOCX \u0111\u1ea7y \u0111\u1ee7 sau khi thanh to\u00e1n th\u00e0nh c\u00f4ng.<\/p>\n","protected":false},"featured_media":8481,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[314],"product_cat":[24,50,134],"product_tag":[5740,5751,5741,5742,5743,5744,4642,5745,5431,5746,5736,5747,5737,5748,5738,5749,5739,5750],"class_list":["post-8570","product","type-product","status-publish","has-post-thumbnail","product_brand-docx247-com","product_cat-ky-thuat-cong-nghe","product_cat-dap-an-trac-nghiem","product_cat-dai-hoc-quoc-gia-ha-noi","product_tag-dap-an-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","product_tag-trac-nghiem-mon-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi","product_tag-trac-nghiem-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","product_tag-dap-an-trac-nghiem-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","product_tag-trac-nghiem-mon-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","product_tag-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi","product_tag-vnu","product_tag-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi-dap-an","product_tag-dai-hoc-quoc-gia-ha-noi","product_tag-mon-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi","product_tag-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","product_tag-dap-an-mon-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi","product_tag-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu-dap-an","product_tag-dap-an-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi","product_tag-mon-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","product_tag-trac-nghiem-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi","product_tag-dap-an-mon-nhap-mon-khai-pha-du-lieu-va-may-hoc-vnu","product_tag-dap-an-trac-nghiem-nhap-mon-khai-pha-du-lieu-va-may-hoc-dai-hoc-quoc-gia-ha-noi","first","instock","downloadable","virtual","purchasable","product-type-simple"],"acf":{"document_info":{"filetype":"docx","page_count":"55","other_info":[{"title":"Lo\u1ea1i t\u00e0i li\u1ec7u","description":"\u0110\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m"},{"title":"D\u00e0nh cho","description":"Sinh vi\u00ean \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i (VNU)"},{"title":"\u0110\u1ecbnh d\u1ea1ng t\u00e0i li\u1ec7u","description":"DOCX"},{"title":"S\u1ed1 trang","description":"55 trang"},{"title":"Xem tr\u01b0\u1edbc","description":"Kho\u1ea3ng 20\u201330% n\u1ed9i dung c\u1ee7a to\u00e0n b\u1ed9 t\u00e0i li\u1ec7u"},{"title":"Thanh to\u00e1n","description":"VNPAY"},{"title":"Ngu\u1ed3n","description":"DOCX247.COM"}]},"document_demo":8571,"additional_content":"<h2>Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU \u2013 N\u1ed9i dung tr\u1ecdng t\u00e2m<\/h2>\n<p>Khai ph\u00e1 d\u1eef li\u1ec7u l\u00e0 qu\u00e1 tr\u00ecnh t\u00ecm ki\u1ebfm nh\u1eefng m\u1eabu, m\u1ed1i quan h\u1ec7 v\u00e0 th\u00f4ng tin c\u00f3 gi\u00e1 tr\u1ecb t\u1eeb c\u00e1c t\u1eadp d\u1eef li\u1ec7u.<\/p>\n<p>M\u00e1y h\u1ecdc t\u1eadp trung v\u00e0o vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh c\u00f3 kh\u1ea3 n\u0103ng h\u1ecdc t\u1eeb d\u1eef li\u1ec7u \u0111\u1ec3 th\u1ef1c hi\u1ec7n nh\u1eefng nhi\u1ec7m v\u1ee5 nh\u01b0 ph\u00e2n lo\u1ea1i, d\u1ef1 \u0111o\u00e1n, h\u1ed3i quy ho\u1eb7c ph\u00e2n nh\u00f3m.<\/p>\n<p>Hai l\u0129nh v\u1ef1c c\u00f3 m\u1ed1i quan h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi nhau v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong ph\u00e2n t\u00edch d\u1eef li\u1ec7u, tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 nhi\u1ec1u h\u1ec7 th\u1ed1ng th\u00f4ng tin hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>T\u00e0i li\u1ec7u \u0110\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU g\u1ed3m 55 trang, h\u1ed7 tr\u1ee3 sinh vi\u00ean luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi, ki\u1ec3m tra ki\u1ebfn th\u1ee9c, \u0111\u1ed1i chi\u1ebfu \u0111\u00e1p \u00e1n v\u00e0 h\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/p>\n<h3>1. Kh\u00e1i ni\u1ec7m khai ph\u00e1 d\u1eef li\u1ec7u<\/h3>\n<p>Sinh vi\u00ean c\u1ea7n n\u1eafm:<\/p>\n<ul>\n<li>Kh\u00e1i ni\u1ec7m d\u1eef li\u1ec7u.<\/li>\n<li>Th\u00f4ng tin.<\/li>\n<li>Tri th\u1ee9c.<\/li>\n<li>Khai ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<li>Ph\u00e1t hi\u1ec7n m\u1eabu.<\/li>\n<li>Ph\u00e2n t\u00edch d\u1eef li\u1ec7u.<\/li>\n<li>\u1ee8ng d\u1ee5ng c\u1ee7a khai ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<p>M\u1ee5c ti\u00eau c\u1ee7a khai ph\u00e1 d\u1eef li\u1ec7u kh\u00f4ng ch\u1ec9 l\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u m\u00e0 c\u00f2n t\u00ecm ra th\u00f4ng tin h\u1eefu \u00edch t\u1eeb d\u1eef li\u1ec7u.<\/p>\n<h3>2. Kh\u00e1i ni\u1ec7m m\u00e1y h\u1ecdc<\/h3>\n<p>M\u00e1y h\u1ecdc l\u00e0 l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u c\u00e1c ph\u01b0\u01a1ng ph\u00e1p gi\u00fap h\u1ec7 th\u1ed1ng c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 d\u1ef1a tr\u00ean d\u1eef li\u1ec7u ho\u1eb7c kinh nghi\u1ec7m.<\/p>\n<p>C\u00e1c n\u1ed9i dung c\u1ea7n hi\u1ec3u:<\/p>\n<ul>\n<li>D\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n.<\/li>\n<li>M\u00f4 h\u00ecnh.<\/li>\n<li>Thu\u1eadt to\u00e1n h\u1ecdc.<\/li>\n<li>D\u1ef1 \u0111o\u00e1n.<\/li>\n<li>\u0110\u00e1nh gi\u00e1 k\u1ebft qu\u1ea3.<\/li>\n<li>Kh\u1ea3 n\u0103ng t\u1ed5ng qu\u00e1t h\u00f3a.<\/li>\n<\/ul>\n<h3>3. Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc<\/h3>\n<p>Sinh vi\u00ean c\u1ea7n ph\u00e2n bi\u1ec7t:<\/p>\n<ul>\n<li>M\u1ee5c ti\u00eau khai ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<li>M\u1ee5c ti\u00eau x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh.<\/li>\n<li>Ph\u00e1t hi\u1ec7n m\u1eabu.<\/li>\n<li>D\u1ef1 \u0111o\u00e1n.<\/li>\n<li>Ph\u00e2n lo\u1ea1i.<\/li>\n<li>Ph\u00e2n c\u1ee5m.<\/li>\n<li>Ph\u00e2n t\u00edch d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<p>Khai ph\u00e1 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n m\u00e1y h\u1ecdc nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a qu\u00e1 tr\u00ecnh kh\u00e1m ph\u00e1 tri th\u1ee9c.<\/p>\n<h3>4. Quy tr\u00ecnh kh\u00e1m ph\u00e1 tri th\u1ee9c t\u1eeb d\u1eef li\u1ec7u<\/h3>\n<p>M\u1ed9t quy tr\u00ecnh c\u00f3 th\u1ec3 g\u1ed3m:<\/p>\n<ul>\n<li>Thu th\u1eadp d\u1eef li\u1ec7u.<\/li>\n<li>L\u1ef1a ch\u1ecdn d\u1eef li\u1ec7u.<\/li>\n<li>L\u00e0m s\u1ea1ch d\u1eef li\u1ec7u.<\/li>\n<li>Chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u.<\/li>\n<li>Khai ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<li>\u0110\u00e1nh gi\u00e1 m\u1eabu.<\/li>\n<li>Tr\u00ecnh b\u00e0y tri th\u1ee9c.<\/li>\n<\/ul>\n<p>Sinh vi\u00ean c\u1ea7n hi\u1ec3u r\u1eb1ng ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch.<\/p>\n<h3>5. C\u00e1c lo\u1ea1i d\u1eef li\u1ec7u<\/h3>\n<p>D\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo nhi\u1ec1u c\u00e1ch:<\/p>\n<ul>\n<li>D\u1eef li\u1ec7u s\u1ed1.<\/li>\n<li>D\u1eef li\u1ec7u ph\u00e2n lo\u1ea1i.<\/li>\n<li>D\u1eef li\u1ec7u nh\u1ecb ph\u00e2n.<\/li>\n<li>D\u1eef li\u1ec7u th\u1ee9 b\u1eadc.<\/li>\n<li>D\u1eef li\u1ec7u li\u00ean t\u1ee5c.<\/li>\n<li>D\u1eef li\u1ec7u r\u1eddi r\u1ea1c.<\/li>\n<\/ul>\n<p>Vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang ki\u1ec3u d\u1eef li\u1ec7u gi\u00fap l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd v\u00e0 thu\u1eadt to\u00e1n ph\u00f9 h\u1ee3p.<\/p>\n<h3>6. Thu\u1ed9c t\u00ednh d\u1eef li\u1ec7u<\/h3>\n<p>M\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1eb1ng nhi\u1ec1u thu\u1ed9c t\u00ednh.<\/p>\n<p>C\u00e1c d\u1ea1ng thu\u1ed9c t\u00ednh th\u01b0\u1eddng g\u1eb7p:<\/p>\n<ul>\n<li>Nominal.<\/li>\n<li>Binary.<\/li>\n<li>Ordinal.<\/li>\n<li>Numeric.<\/li>\n<li>Discrete.<\/li>\n<li>Continuous.<\/li>\n<\/ul>\n<p>Sinh vi\u00ean c\u1ea7n hi\u1ec3u s\u1ef1 kh\u00e1c nhau gi\u1eefa gi\u00e1 tr\u1ecb mang t\u00ednh \u0111\u1ecbnh danh v\u00e0 gi\u00e1 tr\u1ecb c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n ph\u00e9p to\u00e1n s\u1ed1 h\u1ecdc.<\/p>\n<h3>7. Ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u<\/h3>\n<p>D\u1eef li\u1ec7u th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 g\u1eb7p:<\/p>\n<ul>\n<li>Gi\u00e1 tr\u1ecb thi\u1ebfu.<\/li>\n<li>D\u1eef li\u1ec7u nhi\u1ec5u.<\/li>\n<li>Gi\u00e1 tr\u1ecb ngo\u1ea1i l\u1ec7.<\/li>\n<li>D\u1eef li\u1ec7u tr\u00f9ng l\u1eb7p.<\/li>\n<li>D\u1eef li\u1ec7u kh\u00f4ng nh\u1ea5t qu\u00e1n.<\/li>\n<li>Sai \u0111\u1ecbnh d\u1ea1ng.<\/li>\n<\/ul>\n<p>Ti\u1ec1n x\u1eed l\u00fd d\u1eef li\u1ec7u l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng tr\u01b0\u1edbc khi x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh.<\/p>\n<h3>8. L\u00e0m s\u1ea1ch d\u1eef li\u1ec7u<\/h3>\n<p>C\u00e1c c\u00f4ng vi\u1ec7c c\u00f3 th\u1ec3 g\u1ed3m:<\/p>\n<ul>\n<li>X\u1eed l\u00fd gi\u00e1 tr\u1ecb thi\u1ebfu.<\/li>\n<li>Lo\u1ea1i b\u1ecf d\u1eef li\u1ec7u tr\u00f9ng.<\/li>\n<li>S\u1eeda d\u1eef li\u1ec7u sai.<\/li>\n<li>Chu\u1ea9n h\u00f3a \u0111\u1ecbnh d\u1ea1ng.<\/li>\n<li>Ph\u00e1t hi\u1ec7n ngo\u1ea1i l\u1ec7.<\/li>\n<li>X\u1eed l\u00fd nhi\u1ec5u.<\/li>\n<\/ul>\n<p>Kh\u00f4ng n\u00ean \u0111\u01b0a d\u1eef li\u1ec7u th\u00f4 tr\u1ef1c ti\u1ebfp v\u00e0o m\u00f4 h\u00ecnh m\u00e0 kh\u00f4ng \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u.<\/p>\n<h3>9. X\u1eed l\u00fd gi\u00e1 tr\u1ecb thi\u1ebfu<\/h3>\n<p>M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p c\u00f3 th\u1ec3 g\u1ed3m:<\/p>\n<ul>\n<li>Lo\u1ea1i b\u1ecf b\u1ea3n ghi.<\/li>\n<li>Thay b\u1eb1ng gi\u00e1 tr\u1ecb trung b\u00ecnh.<\/li>\n<li>Thay b\u1eb1ng trung v\u1ecb.<\/li>\n<li>Thay b\u1eb1ng gi\u00e1 tr\u1ecb ph\u1ed5 bi\u1ebfn.<\/li>\n<li>\u01af\u1edbc l\u01b0\u1ee3ng gi\u00e1 tr\u1ecb d\u1ef1a tr\u00ean d\u1eef li\u1ec7u kh\u00e1c.<\/li>\n<\/ul>\n<p>L\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u1ee5 thu\u1ed9c v\u00e0o d\u1eef li\u1ec7u v\u00e0 m\u1ee5c ti\u00eau ph\u00e2n t\u00edch.<\/p>\n<h3>10. Chu\u1ea9n h\u00f3a d\u1eef li\u1ec7u<\/h3>\n<p>Chu\u1ea9n h\u00f3a gi\u00fap \u0111\u01b0a c\u00e1c thu\u1ed9c t\u00ednh v\u1ec1 thang \u0111o ph\u00f9 h\u1ee3p.<\/p>\n<p>\u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c thu\u1eadt to\u00e1n s\u1eed d\u1ee5ng kho\u1ea3ng c\u00e1ch.<\/p>\n<p>Sinh vi\u00ean c\u1ea7n hi\u1ec3u:<\/p>\n<ul>\n<li>Scale.<\/li>\n<li>Standardization.<\/li>\n<li>Normalization.<\/li>\n<li>\u1ea2nh h\u01b0\u1edfng c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o.<\/li>\n<\/ul>\n<h3>11. L\u1ef1a ch\u1ecdn \u0111\u1eb7c tr\u01b0ng<\/h3>\n<p>Kh\u00f4ng ph\u1ea3i m\u1ecdi thu\u1ed9c t\u00ednh \u0111\u1ec1u h\u1eefu \u00edch cho m\u00f4 h\u00ecnh.<\/p>\n<p>Feature selection c\u00f3 th\u1ec3 gi\u00fap:<\/p>\n<ul>\n<li>Gi\u1ea3m s\u1ed1 chi\u1ec1u.<\/li>\n<li>Gi\u1ea3m nhi\u1ec5u.<\/li>\n<li>Gi\u1ea3m th\u1eddi gian hu\u1ea5n luy\u1ec7n.<\/li>\n<li>T\u0103ng kh\u1ea3 n\u0103ng di\u1ec5n gi\u1ea3i.<\/li>\n<li>H\u1ea1n ch\u1ebf overfitting trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p.<\/li>\n<\/ul>\n<h3>12. H\u1ecdc c\u00f3 gi\u00e1m s\u00e1t<\/h3>\n<p>Supervised learning s\u1eed d\u1ee5ng d\u1eef li\u1ec7u c\u00f3 nh\u00e3n.<\/p>\n<p>C\u00e1c b\u00e0i to\u00e1n ph\u1ed5 bi\u1ebfn:<\/p>\n<ul>\n<li>Classification.<\/li>\n<li>Regression.<\/li>\n<\/ul>\n<p>D\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n g\u1ed3m:<\/p>\n<ul>\n<li>\u0110\u1eb7c tr\u01b0ng \u0111\u1ea7u v\u00e0o.<\/li>\n<li>Nh\u00e3n ho\u1eb7c gi\u00e1 tr\u1ecb m\u1ee5c ti\u00eau.<\/li>\n<\/ul>\n<h3>13. H\u1ecdc kh\u00f4ng gi\u00e1m s\u00e1t<\/h3>\n<p>Unsupervised learning l\u00e0m vi\u1ec7c v\u1edbi d\u1eef li\u1ec7u kh\u00f4ng c\u00f3 nh\u00e3n m\u1ee5c ti\u00eau.<\/p>\n<p>C\u00e1c nhi\u1ec7m v\u1ee5 c\u00f3 th\u1ec3 g\u1ed3m:<\/p>\n<ul>\n<li>Clustering.<\/li>\n<li>Ph\u00e1t hi\u1ec7n c\u1ea5u tr\u00fac d\u1eef li\u1ec7u.<\/li>\n<li>Ph\u00e1t hi\u1ec7n m\u1eabu.<\/li>\n<li>Gi\u1ea3m chi\u1ec1u d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3>14. Ph\u00e2n lo\u1ea1i<\/h3>\n<p>Classification l\u00e0 b\u00e0i to\u00e1n d\u1ef1 \u0111o\u00e1n m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng thu\u1ed9c l\u1edbp n\u00e0o.<\/p>\n<p>V\u00ed d\u1ee5:<\/p>\n<ul>\n<li>Email spam ho\u1eb7c kh\u00f4ng spam.<\/li>\n<li>Giao d\u1ecbch b\u00ecnh th\u01b0\u1eddng ho\u1eb7c b\u1ea5t th\u01b0\u1eddng.<\/li>\n<li>Kh\u00e1ch h\u00e0ng thu\u1ed9c m\u1ed9t nh\u00f3m x\u00e1c \u0111\u1ecbnh.<\/li>\n<li>M\u1eabu thu\u1ed9c l\u1edbp A ho\u1eb7c B.<\/li>\n<\/ul>\n<p>\u0110\u1ea7u ra c\u1ee7a b\u00e0i to\u00e1n ph\u00e2n lo\u1ea1i th\u01b0\u1eddng l\u00e0 nh\u00e3n r\u1eddi r\u1ea1c.<\/p>\n<h3>15. H\u1ed3i quy<\/h3>\n<p>Regression th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n m\u1ed9t gi\u00e1 tr\u1ecb s\u1ed1.<\/p>\n<p>V\u00ed d\u1ee5:<\/p>\n<ul>\n<li>Gi\u00e1.<\/li>\n<li>Doanh thu.<\/li>\n<li>Nhu c\u1ea7u.<\/li>\n<li>Nhi\u1ec7t \u0111\u1ed9.<\/li>\n<li>Gi\u00e1 tr\u1ecb li\u00ean t\u1ee5c kh\u00e1c.<\/li>\n<\/ul>\n<p>Sinh vi\u00ean c\u1ea7n ph\u00e2n bi\u1ec7t classification v\u00e0 regression d\u1ef1a tr\u00ean lo\u1ea1i \u0111\u1ea7u ra c\u1ea7n d\u1ef1 \u0111o\u00e1n.<\/p>\n<h3>16. Ph\u00e2n c\u1ee5m<\/h3>\n<p>Clustering nh\u00f3m c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng sao cho:<\/p>\n<ul>\n<li>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong c\u00f9ng nh\u00f3m c\u00f3 xu h\u01b0\u1edbng gi\u1ed1ng nhau.<\/li>\n<li>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng thu\u1ed9c nh\u00f3m kh\u00e1c nhau c\u00f3 xu h\u01b0\u1edbng kh\u00e1c nhau.<\/li>\n<\/ul>\n<p>Ph\u00e2n c\u1ee5m l\u00e0 m\u1ed9t d\u1ea1ng h\u1ecdc kh\u00f4ng gi\u00e1m s\u00e1t ph\u1ed5 bi\u1ebfn.<\/p>\n<h3>17. Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng<\/h3>\n<p>Nhi\u1ec1u thu\u1eadt to\u00e1n s\u1eed d\u1ee5ng kh\u00e1i ni\u1ec7m kho\u1ea3ng c\u00e1ch.<\/p>\n<p>C\u00e1c n\u1ed9i dung c\u00f3 th\u1ec3 g\u1ed3m:<\/p>\n<ul>\n<li>Kho\u1ea3ng c\u00e1ch Euclid.<\/li>\n<li>Kho\u1ea3ng c\u00e1ch Manhattan.<\/li>\n<li>\u0110\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng.<\/li>\n<li>Kh\u00f4ng gian \u0111\u1eb7c tr\u01b0ng.<\/li>\n<\/ul>\n<p>D\u1eef li\u1ec7u c\u00f3 thang \u0111o kh\u00e1c nhau c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn k\u1ebft qu\u1ea3 t\u00ednh kho\u1ea3ng c\u00e1ch.<\/p>\n<h3>18. K-Nearest Neighbors<\/h3>\n<p>KNN d\u1ef1 \u0111o\u00e1n d\u1ef1a tr\u00ean c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u g\u1ea7n v\u1edbi m\u1ed9t \u0111i\u1ec3m m\u1edbi.<\/p>\n<p>C\u00e1c kh\u00e1i ni\u1ec7m c\u1ea7n hi\u1ec3u:<\/p>\n<ul>\n<li>Gi\u00e1 tr\u1ecb k.<\/li>\n<li>Kho\u1ea3ng c\u00e1ch.<\/li>\n<li>C\u00e1c l\u00e1ng gi\u1ec1ng g\u1ea7n nh\u1ea5t.<\/li>\n<li>B\u1ecf phi\u1ebfu trong ph\u00e2n lo\u1ea1i.<\/li>\n<li>Gi\u00e1 tr\u1ecb d\u1ef1 \u0111o\u00e1n trong h\u1ed3i quy.<\/li>\n<\/ul>\n<h3>19. \u1ea2nh h\u01b0\u1edfng c\u1ee7a gi\u00e1 tr\u1ecb K trong KNN<\/h3>\n<p>N\u1ebfu K qu\u00e1 nh\u1ecf:<\/p>\n<ul>\n<li>M\u00f4 h\u00ecnh c\u00f3 th\u1ec3 nh\u1ea1y v\u1edbi nhi\u1ec5u.<\/li>\n<\/ul>\n<p>N\u1ebfu K qu\u00e1 l\u1edbn:<\/p>\n<ul>\n<li>Ranh gi\u1edbi gi\u1eefa c\u00e1c nh\u00f3m c\u00f3 th\u1ec3 b\u1ecb l\u00e0m m\u1edd.<\/li>\n<\/ul>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn K c\u1ea7n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u v\u00e0 k\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1.<\/p>\n<h3>20. C\u00e2y quy\u1ebft \u0111\u1ecbnh<\/h3>\n<p>Decision Tree bi\u1ec3u di\u1ec5n qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh d\u01b0\u1edbi d\u1ea1ng c\u1ea5u tr\u00fac c\u00e2y.<\/p>\n<p>C\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 g\u1ed3m:<\/p>\n<ul>\n<li>Root node.<\/li>\n<li>Internal node.<\/li>\n<li>Branch.<\/li>\n<li>Leaf node.<\/li>\n<li>\u0110i\u1ec1u ki\u1ec7n ph\u00e2n chia.<\/li>\n<li>Nh\u00e3n d\u1ef1 \u0111o\u00e1n.<\/li>\n<\/ul>\n<p>C\u00e2y quy\u1ebft \u0111\u1ecbnh c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i d\u1ec5 tr\u1ef1c quan h\u00f3a v\u00e0 gi\u1ea3i th\u00edch.<\/p>\n<h3>21. X\u00e2y d\u1ef1ng c\u00e2y quy\u1ebft \u0111\u1ecbnh<\/h3>\n<p>Qu\u00e1 tr\u00ecnh th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn:<\/p>\n<ul>\n<li>Ch\u1ecdn thu\u1ed9c t\u00ednh ph\u00e2n chia.<\/li>\n<li>Chia d\u1eef li\u1ec7u.<\/li>\n<li>Ti\u1ebfp t\u1ee5c ph\u00e2n chia c\u00e1c n\u00fat.<\/li>\n<li>X\u00e1c \u0111\u1ecbnh \u0111i\u1ec1u ki\u1ec7n d\u1eebng.<\/li>\n<li>T\u1ea1o n\u00fat l\u00e1.<\/li>\n<\/ul>\n<p>C\u00e1c ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn thu\u1ed9c t\u00ednh c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y thu\u1eadt to\u00e1n.<\/p>\n<h3>22. Entropy<\/h3>\n<p>Entropy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o m\u1ee9c \u0111\u1ed9 h\u1ed7n lo\u1ea1n ho\u1eb7c kh\u00f4ng thu\u1ea7n nh\u1ea5t c\u1ee7a t\u1eadp d\u1eef li\u1ec7u trong m\u1ed9t s\u1ed1 thu\u1eadt to\u00e1n c\u00e2y quy\u1ebft \u0111\u1ecbnh.<\/p>\n<p>N\u1ebfu d\u1eef li\u1ec7u trong m\u1ed9t n\u00fat ch\u1ee7 y\u1ebfu thu\u1ed9c c\u00f9ng m\u1ed9t l\u1edbp, m\u1ee9c \u0111\u1ed9 kh\u00f4ng thu\u1ea7n nh\u1ea5t th\u01b0\u1eddng th\u1ea5p h\u01a1n.<\/p>\n<h3>23. Information Gain<\/h3>\n<p>Information Gain \u0111\u00e1nh gi\u00e1 m\u1ee9c gi\u1ea3m entropy sau khi chia d\u1eef li\u1ec7u theo m\u1ed9t thu\u1ed9c t\u00ednh.<\/p>\n<p>Thu\u1ed9c t\u00ednh t\u1ea1o ra s\u1ef1 ph\u00e2n chia t\u1ed1t h\u01a1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u01b0u ti\u00ean trong qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng c\u00e2y.<\/p>\n<h3>24. Naive Bayes<\/h3>\n<p>Naive Bayes d\u1ef1a tr\u00ean \u0111\u1ecbnh l\u00fd Bayes v\u00e0 gi\u1ea3 \u0111\u1ecbnh \u0111\u01a1n gi\u1ea3n h\u00f3a v\u1ec1 quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1eb7c tr\u01b0ng.<\/p>\n<p>C\u00e1c kh\u00e1i ni\u1ec7m c\u1ea7n n\u1eafm:<\/p>\n<ul>\n<li>Prior probability.<\/li>\n<li>Conditional probability.<\/li>\n<li>Posterior probability.<\/li>\n<li>Class prediction.<\/li>\n<\/ul>\n<p>Thu\u1eadt to\u00e1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u00e0i to\u00e1n ph\u00e2n lo\u1ea1i.<\/p>\n<h3>25. \u0110\u1ecbnh l\u00fd Bayes<\/h3>\n<p>D\u1ea1ng t\u1ed5ng qu\u00e1t:<\/p>\n<p><strong>P(A|B) = P(B|A) \u00d7 P(A) \/ P(B)<\/strong><\/p>\n<p>Sinh vi\u00ean c\u1ea7n hi\u1ec3u \u00fd ngh\u0129a c\u1ee7a:<\/p>\n<ul>\n<li>X\u00e1c su\u1ea5t ti\u00ean nghi\u1ec7m.<\/li>\n<li>X\u00e1c su\u1ea5t c\u00f3 \u0111i\u1ec1u ki\u1ec7n.<\/li>\n<li>X\u00e1c su\u1ea5t h\u1eadu nghi\u1ec7m.<\/li>\n<\/ul>\n<h3>26. H\u1ed3i quy tuy\u1ebfn t\u00ednh<\/h3>\n<p>Linear Regression m\u00f4 h\u00ecnh h\u00f3a quan h\u1ec7 gi\u1eefa bi\u1ebfn \u0111\u1ea7u v\u00e0o v\u00e0 bi\u1ebfn m\u1ee5c ti\u00eau b\u1eb1ng m\u1ed9t h\u00e0m tuy\u1ebfn t\u00ednh.<\/p>\n<p>C\u00e1c kh\u00e1i ni\u1ec7m c\u1ea7n hi\u1ec3u:<\/p>\n<ul>\n<li>Bi\u1ebfn \u0111\u1ed9c l\u1eadp.<\/li>\n<li>Bi\u1ebfn ph\u1ee5 thu\u1ed9c.<\/li>\n<li>H\u1ec7 s\u1ed1.<\/li>\n<li>Sai s\u1ed1.<\/li>\n<li>Gi\u00e1 tr\u1ecb d\u1ef1 \u0111o\u00e1n.<\/li>\n<\/ul>\n<h3>27. H\u00e0m m\u1ea5t m\u00e1t<\/h3>\n<p>Loss function \u0111o m\u1ee9c \u0111\u1ed9 kh\u00e1c bi\u1ec7t gi\u1eefa:<\/p>\n<ul>\n<li>Gi\u00e1 tr\u1ecb d\u1ef1 \u0111o\u00e1n.<\/li>\n<li>Gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<p>M\u1ee5c ti\u00eau hu\u1ea5n luy\u1ec7n th\u01b0\u1eddng l\u00e0 t\u00ecm tham s\u1ed1 gi\u00fap gi\u1ea3m gi\u00e1 tr\u1ecb h\u00e0m m\u1ea5t m\u00e1t.<\/p>\n<h3>28. D\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n v\u00e0 d\u1eef li\u1ec7u ki\u1ec3m tra<\/h3>\n<p>Sinh vi\u00ean c\u1ea7n ph\u00e2n bi\u1ec7t:<\/p>\n<ul>\n<li>Training set.<\/li>\n<li>Validation set.<\/li>\n<li>Test set.<\/li>\n<\/ul>\n<p>Training set d\u00f9ng \u0111\u1ec3 h\u1ecdc m\u00f4 h\u00ecnh.<\/p>\n<p>Test set d\u00f9ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00f4 h\u00ecnh tr\u00ean d\u1eef li\u1ec7u ch\u01b0a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 hu\u1ea5n luy\u1ec7n.<\/p>\n<h3>29. Ph\u00e2n chia d\u1eef li\u1ec7u<\/h3>\n<p>Khi chia d\u1eef li\u1ec7u c\u1ea7n \u0111\u1ea3m b\u1ea3o:<\/p>\n<ul>\n<li>D\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n \u0111\u1ee7 \u0111\u1ea1i di\u1ec7n.<\/li>\n<li>D\u1eef li\u1ec7u ki\u1ec3m tra kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ef1c ti\u1ebfp hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh.<\/li>\n<li>H\u1ea1n ch\u1ebf r\u00f2 r\u1ec9 d\u1eef li\u1ec7u.<\/li>\n<li>T\u1ef7 l\u1ec7 ph\u00e2n chia ph\u00f9 h\u1ee3p.<\/li>\n<\/ul>\n<h3>30. Overfitting<\/h3>\n<p>Overfitting x\u1ea3y ra khi m\u00f4 h\u00ecnh h\u1ecdc qu\u00e1 s\u00e1t d\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n nh\u01b0ng ho\u1ea1t \u0111\u1ed9ng k\u00e9m tr\u00ean d\u1eef li\u1ec7u m\u1edbi.<\/p>\n<p>D\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 l\u00e0:<\/p>\n<ul>\n<li>Hi\u1ec7u su\u1ea5t hu\u1ea5n luy\u1ec7n r\u1ea5t cao.<\/li>\n<li>Hi\u1ec7u su\u1ea5t ki\u1ec3m tra th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3.<\/li>\n<li>M\u00f4 h\u00ecnh qu\u00e1 ph\u1ee9c t\u1ea1p so v\u1edbi l\u01b0\u1ee3ng d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3>31. Underfitting<\/h3>\n<p>Underfitting x\u1ea3y ra khi m\u00f4 h\u00ecnh ch\u01b0a h\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ea7y \u0111\u1ee7 c\u1ea5u tr\u00fac c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<p>M\u00f4 h\u00ecnh c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng k\u00e9m:<\/p>\n<ul>\n<li>Tr\u00ean t\u1eadp hu\u1ea5n luy\u1ec7n.<\/li>\n<li>Tr\u00ean t\u1eadp ki\u1ec3m tra.<\/li>\n<\/ul>\n<p>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn m\u00f4 h\u00ecnh qu\u00e1 \u0111\u01a1n gi\u1ea3n ho\u1eb7c qu\u00e1 tr\u00ecnh h\u1ecdc ch\u01b0a ph\u00f9 h\u1ee3p.<\/p>\n<h3>32. Kh\u1ea3 n\u0103ng t\u1ed5ng qu\u00e1t h\u00f3a<\/h3>\n<p>M\u1ed9t m\u00f4 h\u00ecnh t\u1ed1t c\u1ea7n ho\u1ea1t \u0111\u1ed9ng h\u1ee3p l\u00fd tr\u00ean d\u1eef li\u1ec7u m\u1edbi ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1eef li\u1ec7u \u0111\u00e3 d\u00f9ng \u0111\u1ec3 hu\u1ea5n luy\u1ec7n.<\/p>\n<p>Generalization l\u00e0 m\u1ed9t m\u1ee5c ti\u00eau quan tr\u1ecdng trong m\u00e1y h\u1ecdc.<\/p>\n<h3>33. Confusion Matrix<\/h3>\n<p>Confusion Matrix th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 b\u00e0i to\u00e1n ph\u00e2n lo\u1ea1i.<\/p>\n<p>C\u00e1c th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n:<\/p>\n<ul>\n<li>True Positive.<\/li>\n<li>True Negative.<\/li>\n<li>False Positive.<\/li>\n<li>False Negative.<\/li>\n<\/ul>\n<p>\u0110\u00e2y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 t\u00ednh nhi\u1ec1u ch\u1ec9 s\u1ed1 \u0111\u00e1nh gi\u00e1 kh\u00e1c.<\/p>\n<h3>34. Accuracy<\/h3>\n<p>Accuracy ph\u1ea3n \u00e1nh t\u1ef7 l\u1ec7 d\u1ef1 \u0111o\u00e1n \u0111\u00fang tr\u00ean t\u1ed5ng s\u1ed1 m\u1eabu.<\/p>\n<p>C\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n:<\/p>\n<p>Accuracy = S\u1ed1 d\u1ef1 \u0111o\u00e1n \u0111\u00fang \/ T\u1ed5ng s\u1ed1 m\u1eabu<\/p>\n<p>Accuracy kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 ch\u1ec9 s\u1ed1 ph\u00f9 h\u1ee3p nh\u1ea5t, \u0111\u1eb7c bi\u1ec7t khi d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng.<\/p>\n<h3>35. Precision<\/h3>\n<p>Precision ph\u1ea3n \u00e1nh trong c\u00e1c m\u1eabu \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n l\u00e0 d\u01b0\u01a1ng t\u00ednh, bao nhi\u00eau m\u1eabu th\u1ef1c s\u1ef1 d\u01b0\u01a1ng t\u00ednh.<\/p>\n<p>Precision \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi chi ph\u00ed c\u1ee7a False Positive c\u1ea7n \u0111\u01b0\u1ee3c quan t\u00e2m.<\/p>\n<h3>36. Recall<\/h3>\n<p>Recall ph\u1ea3n \u00e1nh trong c\u00e1c m\u1eabu th\u1ef1c s\u1ef1 d\u01b0\u01a1ng t\u00ednh, m\u00f4 h\u00ecnh ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c bao nhi\u00eau.<\/p>\n<p>Recall \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng khi vi\u1ec7c b\u1ecf s\u00f3t m\u1eabu d\u01b0\u01a1ng t\u00ednh g\u00e2y h\u1eadu qu\u1ea3 l\u1edbn.<\/p>\n<h3>37. F1-score<\/h3>\n<p>F1-score k\u1ebft h\u1ee3p Precision v\u00e0 Recall th\u00e0nh m\u1ed9t ch\u1ec9 s\u1ed1.<\/p>\n<p>Ch\u1ec9 s\u1ed1 n\u00e0y h\u1eefu \u00edch khi c\u1ea7n c\u00e2n b\u1eb1ng gi\u1eefa:<\/p>\n<ul>\n<li>Precision.<\/li>\n<li>Recall.<\/li>\n<\/ul>\n<h3>38. D\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng<\/h3>\n<p>Imbalanced data xu\u1ea5t hi\u1ec7n khi s\u1ed1 l\u01b0\u1ee3ng m\u1eabu gi\u1eefa c\u00e1c l\u1edbp kh\u00e1c nhau \u0111\u00e1ng k\u1ec3.<\/p>\n<p>Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y:<\/p>\n<ul>\n<li>Accuracy c\u00f3 th\u1ec3 g\u00e2y hi\u1ec3u l\u1ea7m.<\/li>\n<li>Precision v\u00e0 Recall tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n.<\/li>\n<li>C\u1ea7n xem x\u00e9t ph\u00e2n b\u1ed1 l\u1edbp.<\/li>\n<\/ul>\n<h3>39. Cross-validation<\/h3>\n<p>Cross-validation gi\u00fap \u0111\u00e1nh gi\u00e1 m\u00f4 h\u00ecnh tr\u00ean nhi\u1ec1u c\u00e1ch ph\u00e2n chia d\u1eef li\u1ec7u.<\/p>\n<p>K-fold cross-validation th\u01b0\u1eddng:<\/p>\n<ul>\n<li>Chia d\u1eef li\u1ec7u th\u00e0nh K ph\u1ea7n.<\/li>\n<li>Hu\u1ea5n luy\u1ec7n tr\u00ean K-1 ph\u1ea7n.<\/li>\n<li>\u0110\u00e1nh gi\u00e1 tr\u00ean ph\u1ea7n c\u00f2n l\u1ea1i.<\/li>\n<li>L\u1eb7p l\u1ea1i nhi\u1ec1u l\u1ea7n.<\/li>\n<\/ul>\n<h3>40. Hyperparameter<\/h3>\n<p>Hyperparameter l\u00e0 c\u00e1c tham s\u1ed1 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp tr\u01b0\u1edbc ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh trong qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh.<\/p>\n<p>V\u00ed d\u1ee5:<\/p>\n<ul>\n<li>K trong KNN.<\/li>\n<li>\u0110\u1ed9 s\u00e2u t\u1ed1i \u0111a c\u1ee7a c\u00e2y.<\/li>\n<li>M\u1ed9t s\u1ed1 tham s\u1ed1 ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh h\u1ecdc.<\/li>\n<\/ul>\n<p>C\u1ea7n ph\u00e2n bi\u1ec7t hyperparameter v\u1edbi tham s\u1ed1 \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u1ecdc tr\u1ef1c ti\u1ebfp t\u1eeb d\u1eef li\u1ec7u.<\/p>\n<h3>41. Ph\u00e2n c\u1ee5m K-means<\/h3>\n<p>K-means chia d\u1eef li\u1ec7u th\u00e0nh K c\u1ee5m.<\/p>\n<p>Quy tr\u00ecnh c\u01a1 b\u1ea3n:<\/p>\n<ul>\n<li>Ch\u1ecdn K t\u00e2m c\u1ee5m.<\/li>\n<li>G\u00e1n \u0111i\u1ec3m d\u1eef li\u1ec7u v\u00e0o t\u00e2m g\u1ea7n nh\u1ea5t.<\/li>\n<li>C\u1eadp nh\u1eadt t\u00e2m c\u1ee5m.<\/li>\n<li>L\u1eb7p l\u1ea1i \u0111\u1ebfn khi \u0111\u1ea1t \u0111i\u1ec1u ki\u1ec7n d\u1eebng.<\/li>\n<\/ul>\n<h3>42. Gi\u00e1 tr\u1ecb K trong K-means<\/h3>\n<p>K x\u00e1c \u0111\u1ecbnh s\u1ed1 c\u1ee5m c\u1ea7n t\u1ea1o.<\/p>\n<p>N\u1ebfu K kh\u00f4ng ph\u00f9 h\u1ee3p:<\/p>\n<ul>\n<li>C\u00f3 th\u1ec3 g\u1ed9p nh\u1eefng nh\u00f3m kh\u00e1c nhau.<\/li>\n<li>C\u00f3 th\u1ec3 chia m\u1ed9t nh\u00f3m t\u1ef1 nhi\u00ean th\u00e0nh qu\u00e1 nhi\u1ec1u c\u1ee5m.<\/li>\n<\/ul>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn K c\u1ea7n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u v\u00e0 m\u1ee5c \u0111\u00edch ph\u00e2n t\u00edch.<\/p>\n<h3>43. T\u00e2m c\u1ee5m<\/h3>\n<p>Centroid \u0111\u1ea1i di\u1ec7n cho trung t\u00e2m c\u1ee7a m\u1ed9t c\u1ee5m trong K-means.<\/p>\n<p>Sau khi c\u00e1c \u0111i\u1ec3m \u0111\u01b0\u1ee3c g\u00e1n v\u00e0o c\u1ee5m, t\u00e2m c\u1ee5m \u0111\u01b0\u1ee3c t\u00ednh l\u1ea1i d\u1ef1a tr\u00ean c\u00e1c \u0111i\u1ec3m thu\u1ed9c c\u1ee5m \u0111\u00f3.<\/p>\n<h3>44. Lu\u1eadt k\u1ebft h\u1ee3p<\/h3>\n<p>Association Rule Mining t\u00ecm ki\u1ebfm c\u00e1c quan h\u1ec7 xu\u1ea5t hi\u1ec7n \u0111\u1ed3ng th\u1eddi trong d\u1eef li\u1ec7u.<\/p>\n<p>\u1ee8ng d\u1ee5ng quen thu\u1ed9c c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn:<\/p>\n<ul>\n<li>Ph\u00e2n t\u00edch gi\u1ecf h\u00e0ng.<\/li>\n<li>Ph\u00e1t hi\u1ec7n c\u00e1c s\u1ea3n ph\u1ea9m th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n c\u00f9ng nhau.<\/li>\n<li>Ph\u00e2n t\u00edch h\u00e0nh vi.<\/li>\n<\/ul>\n<h3>45. Support<\/h3>\n<p>Support ph\u1ea3n \u00e1nh m\u1ee9c \u0111\u1ed9 ph\u1ed5 bi\u1ebfn c\u1ee7a m\u1ed9t t\u1eadp m\u1ee5c trong to\u00e0n b\u1ed9 d\u1eef li\u1ec7u giao d\u1ecbch.<\/p>\n<p>Support c\u00e0ng cao cho th\u1ea5y t\u1eadp m\u1ee5c xu\u1ea5t hi\u1ec7n c\u00e0ng th\u01b0\u1eddng xuy\u00ean.<\/p>\n<h3>46. Confidence<\/h3>\n<p>Confidence ph\u1ea3n \u00e1nh m\u1ee9c \u0111\u1ed9 th\u01b0\u1eddng xuy\u00ean k\u1ebft qu\u1ea3 xu\u1ea5t hi\u1ec7n khi \u0111i\u1ec1u ki\u1ec7n c\u1ee7a lu\u1eadt \u0111\u00e3 x\u1ea3y ra.<\/p>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t ch\u1ec9 ti\u00eau c\u01a1 b\u1ea3n khi \u0111\u00e1nh gi\u00e1 lu\u1eadt k\u1ebft h\u1ee3p.<\/p>\n<h3>47. Gi\u1ea3m chi\u1ec1u d\u1eef li\u1ec7u<\/h3>\n<p>D\u1eef li\u1ec7u c\u00f3 qu\u00e1 nhi\u1ec1u \u0111\u1eb7c tr\u01b0ng c\u00f3 th\u1ec3:<\/p>\n<ul>\n<li>T\u0103ng chi ph\u00ed t\u00ednh to\u00e1n.<\/li>\n<li>G\u00e2y kh\u00f3 kh\u0103n khi tr\u1ef1c quan h\u00f3a.<\/li>\n<li>L\u00e0m m\u00f4 h\u00ecnh ph\u1ee9c t\u1ea1p h\u01a1n.<\/li>\n<li>Ch\u1ee9a c\u00e1c thu\u1ed9c t\u00ednh d\u01b0 th\u1eeba.<\/li>\n<\/ul>\n<p>Dimensionality reduction gi\u00fap bi\u1ec3u di\u1ec5n d\u1eef li\u1ec7u b\u1eb1ng s\u1ed1 chi\u1ec1u th\u1ea5p h\u01a1n.<\/p>\n<h3>48. Ngo\u1ea1i l\u1ec7<\/h3>\n<p>Outlier l\u00e0 quan s\u00e1t c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c \u0111\u00e1ng k\u1ec3 so v\u1edbi ph\u1ea7n l\u1edbn d\u1eef li\u1ec7u.<\/p>\n<p>Ngo\u1ea1i l\u1ec7 c\u00f3 th\u1ec3:<\/p>\n<ul>\n<li>L\u00e0 l\u1ed7i d\u1eef li\u1ec7u.<\/li>\n<li>L\u00e0 hi\u1ec7n t\u01b0\u1ee3ng hi\u1ebfm.<\/li>\n<li>Ch\u1ee9a th\u00f4ng tin quan tr\u1ecdng.<\/li>\n<\/ul>\n<p>Kh\u00f4ng n\u00ean t\u1ef1 \u0111\u1ed9ng lo\u1ea1i b\u1ecf m\u1ecdi ngo\u1ea1i l\u1ec7 tr\u01b0\u1edbc khi ph\u00e2n t\u00edch nguy\u00ean nh\u00e2n.<\/p>\n<h3>49. Data Leakage<\/h3>\n<p>Data leakage x\u1ea3y ra khi th\u00f4ng tin kh\u00f4ng n\u00ean c\u00f3 trong qu\u00e1 tr\u00ecnh hu\u1ea5n luy\u1ec7n l\u1ea1i \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o m\u00f4 h\u00ecnh.<\/p>\n<p>\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m:<\/p>\n<ul>\n<li>K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 qu\u00e1 t\u1ed1t m\u1ed9t c\u00e1ch gi\u1ea3 t\u1ea1o.<\/li>\n<li>M\u00f4 h\u00ecnh ho\u1ea1t \u0111\u1ed9ng k\u00e9m khi tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<h3>50. Quy tr\u00ecnh x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh M\u00e1y h\u1ecdc<\/h3>\n<p>M\u1ed9t quy tr\u00ecnh c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 g\u1ed3m:<\/p>\n<ol>\n<li>X\u00e1c \u0111\u1ecbnh b\u00e0i to\u00e1n.<\/li>\n<li>Thu th\u1eadp d\u1eef li\u1ec7u.<\/li>\n<li>Kh\u00e1m ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<li>L\u00e0m s\u1ea1ch d\u1eef li\u1ec7u.<\/li>\n<li>Ch\u1ecdn \u0111\u1eb7c tr\u01b0ng.<\/li>\n<li>Chia d\u1eef li\u1ec7u.<\/li>\n<li>Ch\u1ecdn thu\u1eadt to\u00e1n.<\/li>\n<li>Hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh.<\/li>\n<li>\u0110\u00e1nh gi\u00e1.<\/li>\n<li>\u0110i\u1ec1u ch\u1ec9nh m\u00f4 h\u00ecnh.<\/li>\n<li>Ki\u1ec3m tra tr\u00ean d\u1eef li\u1ec7u m\u1edbi.<\/li>\n<\/ol>\n<h3>51. L\u1ef1a ch\u1ecdn thu\u1eadt to\u00e1n<\/h3>\n<p>Kh\u00f4ng c\u00f3 m\u1ed9t thu\u1eadt to\u00e1n lu\u00f4n t\u1ed1t nh\u1ea5t cho m\u1ecdi b\u00e0i to\u00e1n.<\/p>\n<p>C\u1ea7n xem x\u00e9t:<\/p>\n<ul>\n<li>Lo\u1ea1i d\u1eef li\u1ec7u.<\/li>\n<li>Lo\u1ea1i b\u00e0i to\u00e1n.<\/li>\n<li>S\u1ed1 l\u01b0\u1ee3ng m\u1eabu.<\/li>\n<li>S\u1ed1 \u0111\u1eb7c tr\u01b0ng.<\/li>\n<li>Kh\u1ea3 n\u0103ng gi\u1ea3i th\u00edch.<\/li>\n<li>T\u1ed1c \u0111\u1ed9.<\/li>\n<li>M\u1ee5c ti\u00eau \u0111\u00e1nh gi\u00e1.<\/li>\n<\/ul>\n<h3>52. Kh\u1ea3 n\u0103ng gi\u1ea3i th\u00edch m\u00f4 h\u00ecnh<\/h3>\n<p>M\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh d\u1ec5 gi\u1ea3i th\u00edch h\u01a1n c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c.<\/p>\n<p>Kh\u1ea3 n\u0103ng gi\u1ea3i th\u00edch quan tr\u1ecdng khi:<\/p>\n<ul>\n<li>C\u1ea7n bi\u1ebft l\u00fd do c\u1ee7a d\u1ef1 \u0111o\u00e1n.<\/li>\n<li>K\u1ebft qu\u1ea3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng.<\/li>\n<li>Ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u1ea7n ki\u1ec3m tra m\u00f4 h\u00ecnh.<\/li>\n<\/ul>\n<h3>53. \u1ee8ng d\u1ee5ng c\u1ee7a Khai ph\u00e1 d\u1eef li\u1ec7u<\/h3>\n<p>Khai ph\u00e1 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong:<\/p>\n<ul>\n<li>Kinh doanh.<\/li>\n<li>T\u00e0i ch\u00ednh.<\/li>\n<li>Marketing.<\/li>\n<li>Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed.<\/li>\n<li>Gi\u00e1o d\u1ee5c.<\/li>\n<li>Y t\u1ebf.<\/li>\n<li>An ninh.<\/li>\n<li>Ph\u00e2n t\u00edch h\u00e0nh vi.<\/li>\n<li>Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng.<\/li>\n<\/ul>\n<h3>54. \u1ee8ng d\u1ee5ng c\u1ee7a M\u00e1y h\u1ecdc<\/h3>\n<p>M\u00e1y h\u1ecdc c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3:<\/p>\n<ul>\n<li>Ph\u00e2n lo\u1ea1i.<\/li>\n<li>D\u1ef1 \u0111o\u00e1n.<\/li>\n<li>Nh\u1eadn d\u1ea1ng.<\/li>\n<li>Ph\u00e2n t\u00edch d\u1eef li\u1ec7u.<\/li>\n<li>H\u1ec7 th\u1ed1ng g\u1ee3i \u00fd.<\/li>\n<li>Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng.<\/li>\n<li>X\u1eed l\u00fd ng\u00f4n ng\u1eef.<\/li>\n<li>Ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh.<\/li>\n<\/ul>\n<h3>55. \u0110\u1ea1o \u0111\u1ee9c v\u00e0 tr\u00e1ch nhi\u1ec7m khi s\u1eed d\u1ee5ng d\u1eef li\u1ec7u<\/h3>\n<p>Khi x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ea7n quan t\u00e2m:<\/p>\n<ul>\n<li>Quy\u1ec1n ri\u00eang t\u01b0.<\/li>\n<li>B\u1ea3o m\u1eadt d\u1eef li\u1ec7u.<\/li>\n<li>Ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u.<\/li>\n<li>Thi\u00ean l\u1ec7ch d\u1eef li\u1ec7u.<\/li>\n<li>T\u00ednh minh b\u1ea1ch.<\/li>\n<li>Kh\u1ea3 n\u0103ng gi\u1ea3i th\u00edch.<\/li>\n<li>Tr\u00e1ch nhi\u1ec7m khi s\u1eed d\u1ee5ng k\u1ebft qu\u1ea3.<\/li>\n<\/ul>\n<p>D\u1eef li\u1ec7u v\u00e0 m\u00f4 h\u00ecnh c\u1ea7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u00f9 h\u1ee3p v\u1edbi m\u1ee5c \u0111\u00edch v\u00e0 quy \u0111\u1ecbnh li\u00ean quan.<\/p>\n<h2>C\u00e1ch \u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU hi\u1ec7u qu\u1ea3<\/h2>\n<h3>B\u01b0\u1edbc 1: Chia ki\u1ebfn th\u1ee9c th\u00e0nh t\u1eebng nh\u00f3m<\/h3>\n<p>C\u00f3 th\u1ec3 chia th\u00e0nh:<\/p>\n<ul>\n<li>D\u1eef li\u1ec7u v\u00e0 thu\u1ed9c t\u00ednh.<\/li>\n<li>Ti\u1ec1n x\u1eed l\u00fd d\u1eef li\u1ec7u.<\/li>\n<li>Khai ph\u00e1 d\u1eef li\u1ec7u.<\/li>\n<li>Supervised Learning.<\/li>\n<li>Unsupervised Learning.<\/li>\n<li>Classification.<\/li>\n<li>Regression.<\/li>\n<li>Clustering.<\/li>\n<li>KNN.<\/li>\n<li>Decision Tree.<\/li>\n<li>Naive Bayes.<\/li>\n<li>\u0110\u00e1nh gi\u00e1 m\u00f4 h\u00ecnh.<\/li>\n<li>Overfitting v\u00e0 Underfitting.<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 2: Ph\u00e2n bi\u1ec7t c\u00e1c kh\u00e1i ni\u1ec7m d\u1ec5 nh\u1ea7m<\/h3>\n<p>C\u1ea7n \u0111\u1eb7c bi\u1ec7t ch\u00fa \u00fd:<\/p>\n<ul>\n<li>Data v\u00e0 Information.<\/li>\n<li>Classification v\u00e0 Regression.<\/li>\n<li>Supervised v\u00e0 Unsupervised Learning.<\/li>\n<li>Training set v\u00e0 Test set.<\/li>\n<li>Parameter v\u00e0 Hyperparameter.<\/li>\n<li>Overfitting v\u00e0 Underfitting.<\/li>\n<li>Precision v\u00e0 Recall.<\/li>\n<li>KNN v\u00e0 K-means.<\/li>\n<li>Feature selection v\u00e0 Dimensionality reduction.<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 3: H\u1ecdc thu\u1eadt to\u00e1n c\u00f9ng m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng<\/h3>\n<p>V\u1edbi m\u1ed7i thu\u1eadt to\u00e1n c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/p>\n<ul>\n<li>D\u00f9ng cho lo\u1ea1i b\u00e0i to\u00e1n n\u00e0o.<\/li>\n<li>\u0110\u1ea7u v\u00e0o l\u00e0 g\u00ec.<\/li>\n<li>\u0110\u1ea7u ra l\u00e0 g\u00ec.<\/li>\n<li>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n.<\/li>\n<li>\u01afu \u0111i\u1ec3m.<\/li>\n<li>H\u1ea1n ch\u1ebf.<\/li>\n<li>\u0110i\u1ec1u ki\u1ec7n d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3.<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 4: Luy\u1ec7n Confusion Matrix<\/h3>\n<p>C\u1ea7n x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c:<\/p>\n<ul>\n<li>TP.<\/li>\n<li>TN.<\/li>\n<li>FP.<\/li>\n<li>FN.<\/li>\n<\/ul>\n<p>Sau \u0111\u00f3 m\u1edbi t\u00ednh:<\/p>\n<ul>\n<li>Accuracy.<\/li>\n<li>Precision.<\/li>\n<li>Recall.<\/li>\n<li>F1-score.<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 5: Luy\u1ec7n ph\u00e2n bi\u1ec7t KNN v\u00e0 K-means<\/h3>\n<p><strong>KNN:<\/strong><\/p>\n<ul>\n<li>Th\u01b0\u1eddng d\u00f9ng cho h\u1ecdc c\u00f3 gi\u00e1m s\u00e1t.<\/li>\n<li>D\u1ef1a tr\u00ean c\u00e1c l\u00e1ng gi\u1ec1ng g\u1ea7n nh\u1ea5t.<\/li>\n<li>K l\u00e0 s\u1ed1 l\u00e1ng gi\u1ec1ng \u0111\u01b0\u1ee3c xem x\u00e9t.<\/li>\n<\/ul>\n<p>K-means:<\/p>\n<ul>\n<li>L\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ee5m.<\/li>\n<li>Thu\u1ed9c h\u1ecdc kh\u00f4ng gi\u00e1m s\u00e1t.<\/li>\n<li>K l\u00e0 s\u1ed1 c\u1ee5m c\u1ea7n t\u1ea1o.<\/li>\n<\/ul>\n<p>\u0110\u00e2y l\u00e0 hai thu\u1eadt to\u00e1n c\u00f3 t\u00ean g\u1ea7n gi\u1ed1ng nh\u01b0ng m\u1ee5c \u0111\u00edch kh\u00e1c nhau.<\/p>\n<h3>B\u01b0\u1edbc 6: T\u1ef1 l\u00e0m c\u00e2u h\u1ecfi tr\u01b0\u1edbc khi xem \u0111\u00e1p \u00e1n<\/h3>\n<p>\u0110\u1ecdc t\u1eebng c\u00e2u h\u1ecfi v\u00e0 t\u1ef1 l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng \u00e1n tr\u01b0\u1edbc.<\/p>\n<p>Sau \u0111\u00f3 m\u1edbi \u0111\u1ed1i chi\u1ebfu \u0111\u00e1p \u00e1n v\u00e0 t\u00ecm nguy\u00ean nh\u00e2n n\u1ebfu tr\u1ea3 l\u1eddi sai.<\/p>\n<h3>B\u01b0\u1edbc 7: Ph\u00e2n lo\u1ea1i nh\u1eefng c\u00e2u l\u00e0m sai<\/h3>\n<p>C\u00f3 th\u1ec3 chia th\u00e0nh:<\/p>\n<ul>\n<li>Sai kh\u00e1i ni\u1ec7m d\u1eef li\u1ec7u.<\/li>\n<li>Nh\u1ea7m lo\u1ea1i b\u00e0i to\u00e1n.<\/li>\n<li>Nh\u1ea7m thu\u1eadt to\u00e1n.<\/li>\n<li>Nh\u1ea7m d\u1eef li\u1ec7u hu\u1ea5n luy\u1ec7n v\u00e0 ki\u1ec3m tra.<\/li>\n<li>Nh\u1ea7m ch\u1ec9 s\u1ed1 \u0111\u00e1nh gi\u00e1.<\/li>\n<li>Nh\u1ea7m overfitting v\u00e0 underfitting.<\/li>\n<li>Nh\u1ea7m KNN v\u00e0 K-means.<\/li>\n<li>Sai ki\u1ebfn th\u1ee9c v\u1ec1 ti\u1ec1n x\u1eed l\u00fd d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 8: K\u1ebft h\u1ee3p t\u00e0i li\u1ec7u ch\u00ednh th\u1ee9c<\/h3>\n<p>T\u00e0i li\u1ec7u tr\u1eafc nghi\u1ec7m n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng:<\/p>\n<ul>\n<li>Gi\u00e1o tr\u00ecnh.<\/li>\n<li>Slide b\u00e0i gi\u1ea3ng.<\/li>\n<li>\u0110\u1ec1 c\u01b0\u01a1ng h\u1ecdc ph\u1ea7n.<\/li>\n<li>B\u00e0i t\u1eadp do gi\u1ea3ng vi\u00ean cung c\u1ea5p.<\/li>\n<li>T\u00e0i li\u1ec7u th\u1ef1c h\u00e0nh.<\/li>\n<li>C\u00e1c t\u00e0i li\u1ec7u h\u1ecdc t\u1eadp ch\u00ednh th\u1ee9c kh\u00e1c.<\/li>\n<\/ul>\n<p>Vi\u1ec7c k\u1ebft h\u1ee3p l\u00fd thuy\u1ebft v\u1edbi th\u1ef1c h\u00e0nh tr\u00ean d\u1eef li\u1ec7u gi\u00fap ng\u01b0\u1eddi h\u1ecdc hi\u1ec3u b\u1ea3n ch\u1ea5t thu\u1eadt to\u00e1n thay v\u00ec ch\u1ec9 ghi nh\u1edb \u0111\u00e1p \u00e1n.<\/p>\n<h2>Xem tr\u01b0\u1edbc t\u00e0i li\u1ec7u Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/h2>\n<p>Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 xem tr\u01b0\u1edbc kho\u1ea3ng 20\u201330% n\u1ed9i dung c\u1ee7a t\u00e0i li\u1ec7u 55 trang tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh t\u1ea3i b\u1ea3n \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<p>Ph\u1ea7n xem tr\u01b0\u1edbc gi\u00fap ki\u1ec3m tra:<\/p>\n<ul>\n<li>C\u1ea5u tr\u00fac t\u00e0i li\u1ec7u.<\/li>\n<li>D\u1ea1ng c\u00e2u h\u1ecfi.<\/li>\n<li>C\u00e1ch tr\u00ecnh b\u00e0y.<\/li>\n<li>C\u00e1ch b\u1ed1 tr\u00ed \u0111\u00e1p \u00e1n.<\/li>\n<li>M\u1ed9t ph\u1ea7n n\u1ed9i dung th\u1ef1c t\u1ebf c\u1ee7a t\u00e0i li\u1ec7u.<\/li>\n<\/ul>\n<p>File preview \u0111\u01b0\u1ee3c tool t\u1ef1 x\u00e1c \u0111\u1ecbnh:<\/p>\n<p>nhap-mon-khai-pha-du-lieu-va-may-hoc-VNU-preview.docx<\/p>\n<h2>T\u1ea3i \u0111\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/h2>\n<p>Quy tr\u00ecnh nh\u1eadn t\u00e0i li\u1ec7u:<\/p>\n<ol>\n<li>Xem tr\u01b0\u1edbc kho\u1ea3ng 20\u201330% n\u1ed9i dung.<\/li>\n<li>Ki\u1ec3m tra t\u00e0i li\u1ec7u c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u.<\/li>\n<li>Ch\u1ecdn t\u1ea3i t\u00e0i li\u1ec7u.<\/li>\n<li>Thanh to\u00e1n qua VNPAY.<\/li>\n<li>H\u1ec7 th\u1ed1ng x\u00e1c nh\u1eadn giao d\u1ecbch th\u00e0nh c\u00f4ng.<\/li>\n<li>Nh\u1eadn quy\u1ec1n t\u1ea3i file DOCX \u0111\u1ea7y \u0111\u1ee7 55 trang.<\/li>\n<\/ol>\n<p>\ud83d\udce5 Sau khi thanh to\u00e1n th\u00e0nh c\u00f4ng, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1ea3i t\u00e0i li\u1ec7u \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 m\u00e1y \u0111\u1ec3 s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp.<\/p>\n<p><strong>\ud83d\udc49 NH\u1ea4N \u201cT\u1ea2I XU\u1ed0NG NGAY\u201d \u0110\u1ec2 NH\u1eacN FILE \u0110\u1ea6Y \u0110\u1ee6.<\/strong><\/p>\n<h2>L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng t\u00e0i li\u1ec7u Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/h2>\n<p>\u2705 File DOCX 55 trang thu\u1eadn ti\u1ec7n tra c\u1ee9u.<\/p>\n<p>\u2705 Luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m theo t\u1eebng nh\u00f3m ki\u1ebfn th\u1ee9c.<\/p>\n<p>\u2705 Ki\u1ec3m tra v\u00e0 \u0111\u1ed1i chi\u1ebfu \u0111\u00e1p \u00e1n thu\u1eadn ti\u1ec7n.<\/p>\n<p>\u2705 H\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c v\u1ec1 khai ph\u00e1 d\u1eef li\u1ec7u.<\/p>\n<p>\u2705 C\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c ti\u1ec1n x\u1eed l\u00fd d\u1eef li\u1ec7u.<\/p>\n<p>\u2705 Ph\u00e2n bi\u1ec7t h\u1ecdc c\u00f3 gi\u00e1m s\u00e1t v\u00e0 kh\u00f4ng gi\u00e1m s\u00e1t.<\/p>\n<p>\u2705 \u00d4n t\u1eadp classification, regression v\u00e0 clustering.<\/p>\n<p>\u2705 C\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c v\u1ec1 KNN.<\/p>\n<p>\u2705 \u00d4n t\u1eadp Decision Tree v\u00e0 Naive Bayes.<\/p>\n<p>\u2705 Ph\u00e2n bi\u1ec7t KNN v\u00e0 K-means.<\/p>\n<p>\u2705 C\u1ee7ng c\u1ed1 Confusion Matrix v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u00e1nh gi\u00e1.<\/p>\n<p>\u2705 Ph\u00e2n bi\u1ec7t overfitting v\u00e0 underfitting.<\/p>\n<p>\u2705 Hi\u1ec3u quy tr\u00ecnh x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh m\u00e1y h\u1ecdc.<\/p>\n<p>\u2705 Ph\u00e1t hi\u1ec7n nh\u1eefng n\u1ed9i dung c\u00f2n y\u1ebfu.<\/p>\n<p>\u2705 Ti\u1ebft ki\u1ec7m th\u1eddi gian t\u1ef1 t\u1ed5ng h\u1ee3p t\u00e0i li\u1ec7u.<\/p>\n<p>\u2705 H\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/p>\n<h2>T\u00e0i li\u1ec7u Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU ph\u00f9 h\u1ee3p v\u1edbi ai?<\/h2>\n<p>T\u00e0i li\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi:<\/p>\n<ul>\n<li>Sinh vi\u00ean \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i.<\/li>\n<li>Sinh vi\u00ean \u0111ang h\u1ecdc m\u00f4n Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh C\u00f4ng ngh\u1ec7 th\u00f4ng tin.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh Khoa h\u1ecdc m\u00e1y t\u00ednh.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh Khoa h\u1ecdc d\u1eef li\u1ec7u.<\/li>\n<li>Sinh vi\u00ean ng\u00e0nh H\u1ec7 th\u1ed1ng th\u00f4ng tin.<\/li>\n<li>Sinh vi\u00ean c\u00e1c ng\u00e0nh li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u v\u00e0 tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o.<\/li>\n<li>Sinh vi\u00ean c\u1ea7n luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m.<\/li>\n<li>Sinh vi\u00ean c\u1ea7n ki\u1ec3m tra v\u00e0 \u0111\u1ed1i chi\u1ebfu \u0111\u00e1p \u00e1n.<\/li>\n<li>Sinh vi\u00ean chu\u1ea9n b\u1ecb ki\u1ec3m tra ho\u1eb7c thi k\u1ebft th\u00fac h\u1ecdc ph\u1ea7n.<\/li>\n<li>Ng\u01b0\u1eddi h\u1ecdc c\u1ea7n t\u00e0i li\u1ec7u h\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n<h2>L\u01b0u \u00fd khi s\u1eed d\u1ee5ng t\u00e0i li\u1ec7u<\/h2>\n<p>T\u00e0i li\u1ec7u \u0111\u01b0\u1ee3c cung c\u1ea5p nh\u1eb1m h\u1ed7 tr\u1ee3 h\u1ecdc t\u1eadp, luy\u1ec7n t\u1eadp v\u00e0 \u00f4n thi.<\/p>\n<p>T\u00e0i li\u1ec7u \u0111\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m kh\u00f4ng thay th\u1ebf gi\u00e1o tr\u00ecnh, b\u00e0i gi\u1ea3ng, \u0111\u1ec1 c\u01b0\u01a1ng h\u1ecdc ph\u1ea7n ho\u1eb7c c\u00e1c t\u00e0i li\u1ec7u ch\u00ednh th\u1ee9c c\u1ee7a c\u01a1 s\u1edf \u0111\u00e0o t\u1ea1o.<\/p>\n<p>Ng\u01b0\u1eddi h\u1ecdc n\u00ean t\u1ef1 l\u00e0m c\u00e2u h\u1ecfi tr\u01b0\u1edbc khi xem \u0111\u00e1p \u00e1n v\u00e0 \u0111\u1ed1i chi\u1ebfu nh\u1eefng n\u1ed9i dung ch\u01b0a ch\u1eafc ch\u1eafn v\u1edbi t\u00e0i li\u1ec7u h\u1ecdc t\u1eadp ch\u00ednh th\u1ee9c.<\/p>\n<p>Kh\u00f4ng n\u00ean ch\u1ec9 h\u1ecdc thu\u1ed9c t\u00ean thu\u1eadt to\u00e1n ho\u1eb7c \u0111\u00e1p \u00e1n. Vi\u1ec7c hi\u1ec3u lo\u1ea1i b\u00e0i to\u00e1n, c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd, nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a thu\u1eadt to\u00e1n v\u00e0 \u00fd ngh\u0129a c\u1ee7a c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u00e1nh gi\u00e1 s\u1ebd gi\u00fap ng\u01b0\u1eddi h\u1ecdc x\u1eed l\u00fd t\u1ed1t h\u01a1n khi c\u00e2u h\u1ecfi \u0111\u01b0\u1ee3c thay \u0111\u1ed5i c\u00e1ch di\u1ec5n \u0111\u1ea1t.<\/p>\n<p>\u0110\u1ed1i v\u1edbi n\u1ed9i dung m\u00e1y h\u1ecdc, n\u00ean k\u1ebft h\u1ee3p l\u00fd thuy\u1ebft v\u1edbi th\u1ef1c h\u00e0nh tr\u00ean c\u00e1c t\u1eadp d\u1eef li\u1ec7u \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n \u1ea3nh h\u01b0\u1edfng c\u1ee7a d\u1eef li\u1ec7u v\u00e0 tham s\u1ed1 \u0111\u1ebfn k\u1ebft qu\u1ea3 m\u00f4 h\u00ecnh.<\/p>\n<h2>K\u1ebft lu\u1eadn v\u1ec1 Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU<\/h2>\n<p>Nh\u1eadp m\u00f4n Khai ph\u00e1 d\u1eef li\u1ec7u v\u00e0 M\u00e1y h\u1ecdc VNU \u2013 \u0110\u00e1p \u00e1n tr\u1eafc nghi\u1ec7m \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i (File DOCX 55 trang) l\u00e0 t\u00e0i li\u1ec7u h\u1ed7 tr\u1ee3 sinh vi\u00ean luy\u1ec7n t\u1eadp c\u00e2u h\u1ecfi, ki\u1ec3m tra \u0111\u00e1p \u00e1n, h\u1ec7 th\u1ed1ng h\u00f3a ki\u1ebfn th\u1ee9c v\u00e0 h\u1ed7 tr\u1ee3 \u00f4n t\u1eadp, \u00f4n thi hi\u1ec7u qu\u1ea3.<\/p>\n<p>C\u00e1c n\u1ed9i dung v\u1ec1 d\u1eef li\u1ec7u, ti\u1ec1n x\u1eed l\u00fd d\u1eef li\u1ec7u, h\u1ecdc c\u00f3 gi\u00e1m s\u00e1t, h\u1ecdc kh\u00f4ng gi\u00e1m s\u00e1t, ph\u00e2n lo\u1ea1i, h\u1ed3i quy, ph\u00e2n c\u1ee5m, KNN, c\u00e2y quy\u1ebft \u0111\u1ecbnh, Naive Bayes, \u0111\u00e1nh gi\u00e1 m\u00f4 h\u00ecnh, overfitting v\u00e0 underfitting l\u00e0 nh\u1eefng nh\u00f3m ki\u1ebfn th\u1ee9c ng\u01b0\u1eddi h\u1ecdc n\u00ean ch\u00fa \u00fd trong qu\u00e1 tr\u00ecnh \u00f4n t\u1eadp.<\/p>\n<p>Vi\u1ec7c k\u1ebft h\u1ee3p t\u00e0i li\u1ec7u tr\u1eafc nghi\u1ec7m v\u1edbi gi\u00e1o tr\u00ecnh, b\u00e0i gi\u1ea3ng, b\u00e0i t\u1eadp, \u0111\u1ec1 c\u01b0\u01a1ng h\u1ecdc ph\u1ea7n v\u00e0 th\u1ef1c h\u00e0nh tr\u00ean d\u1eef li\u1ec7u gi\u00fap ng\u01b0\u1eddi h\u1ecdc ch\u1ee7 \u0111\u1ed9ng h\u01a1n trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp v\u00e0 h\u1ea1n ch\u1ebf vi\u1ec7c ch\u1ec9 ghi nh\u1edb \u0111\u00e1p \u00e1n m\u1ed9t c\u00e1ch m\u00e1y m\u00f3c.<\/p>\n<p>\ud83d\udc41 Xem tr\u01b0\u1edbc kho\u1ea3ng 20\u201330% n\u1ed9i dung.<\/p>\n<p>\ud83d\udcb3 Thanh to\u00e1n thu\u1eadn ti\u1ec7n qua VNPAY.<\/p>\n<p>\ud83d\udce5 Nh\u1eadn file DOCX \u0111\u1ea7y \u0111\u1ee7 55 trang sau khi thanh to\u00e1n th\u00e0nh c\u00f4ng.<\/p>"},"_links":{"self":[{"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/product\/8570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/comments?post=8570"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/media\/8481"}],"wp:attachment":[{"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/media?parent=8570"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/product_brand?post=8570"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/product_cat?post=8570"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/docx247.com\/en\/wp-json\/wp\/v2\/product_tag?post=8570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}