{"id":26066,"date":"2023-12-07T02:21:44","date_gmt":"2023-12-07T02:21:44","guid":{"rendered":"https:\/\/masterskills.org\/blog\/cay-quyet-dinh-decision-tree-la-gi-vi-du-ve-cay-quyet-dinh.html"},"modified":"2023-12-22T11:24:43","modified_gmt":"2023-12-22T04:24:43","slug":"cay-quyet-dinh-decision-tree-la-gi-vi-du-ve-cay-quyet-dinh","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/cay-quyet-dinh-decision-tree-la-gi-vi-du-ve-cay-quyet-dinh.html","title":{"rendered":"C\u00e2y quy\u1ebft \u0111\u1ecbnh (Decision tree) l\u00e0 g\u00ec? V\u00ed d\u1ee5 v\u1ec1 c\u00e2y quy\u1ebft \u0111\u1ecbnh"},"content":{"rendered":"
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H\u00ecnh minh h\u1ecda (Ngu\u1ed3n: ditimnguoncamhung.files.wordpress.com)<\/p>\n<\/div>\n<\/div>\n

C\u00e2y quy\u1ebft \u0111\u1ecbnh<\/font><\/h2>\n

Kh\u00e1i ni\u1ec7m<\/b><\/p>\n

C\u00e2y quy\u1ebft \u0111\u1ecbnh <\/b>trong ti\u1ebfng Anh l\u00e0 Decision tree.<\/b><\/p>\n

C\u00e2y quy\u1ebft \u0111\u1ecbnh <\/i>l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n h\u1ed7 tr\u1ee3 cho vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh trong \u0111i\u1ec1u ki\u1ec7n b\u1ea5t \u0111\u1ecbnh. N\u00f3 ch\u1ec9 ra nhi\u1ec1u \u0111\u01b0\u1eddng l\u1ed1i h\u00e0ng \u0111\u1ed9ng kh\u00e1c nhau v\u00e0 h\u1eadu qu\u1ea3 kinh t\u1ebf c\u1ee7a m\u1ed7i \u0111\u01b0\u1eddng l\u1ed1i. Th\u00f4ng th\u01b0\u1eddng, m\u1ed7i \u0111\u01b0\u1eddng l\u1ed1i h\u00e0nh \u0111\u1ed9ng \u0111\u01b0\u1ee3c g\u1eafn v\u1edbi m\u1ed9t x\u00e1c su\u1ea5t ch\u1ee7 quan v\u1ec1 kh\u1ea3 n\u0103ng ph\u00e1t sinh c\u00e1c s\u1ef1 ki\u1ec7n trong t\u01b0\u01a1ng lai.<\/p>\n

V\u00ed d\u1ee5 v\u1ec1 c\u00e2y quy\u1ebft \u0111\u1ecbnh<\/font><\/h3>\n

M\u1ed9t ng\u01b0\u1eddi ngh\u0129 \u0111\u1ebfn vi\u1ec7c m\u1edf m\u1ed9t c\u1eeda h\u00e0ng b\u00e1n l\u1ebb (m\u00e0 th\u00e0nh c\u00f4ng c\u1ee7a n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o chi ti\u00eau c\u1ee7a ng\u01b0\u1eddi ti\u00eau d\u00f9ng v\u00e0 b\u1edfi v\u1eady ph\u1ee5 thu\u1ed9c v\u00e0o th\u1ef1c tr\u1ea1ng c\u1ee7a n\u1ec1n kinh t\u1ebf) s\u1ebd c\u00f3 c\u00e2y quy\u1ebft \u0111\u1ecbnh <\/i>nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n

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C\u0103n c\u1ee9 v\u00e0o C\u00e2y quy\u1ebft \u0111\u1ecbnh<\/i> tr\u00ean, ng\u01b0\u1eddi b\u00e1n l\u1ebb c\u00f3 hai ph\u01b0\u01a1ng \u00e1n h\u00e0nh \u0111\u1ed9ng l\u00e0 m\u1edf c\u1eeda h\u00e0ng v\u00e0 kh\u00f4ng m\u1edf c\u1eeda h\u00e0ng. Anh ta ph\u1ea3i c\u00e2n nh\u1eafc hai tr\u1ea1ng th\u00e1i t\u1ef1 nhi\u00ean, t\u1ee9c hai s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 x\u1ea3y ra: n\u1ec1n kinh t\u1ebf ph\u00e1t tri\u1ec3n m\u1ea1nh ho\u1eb7c suy tho\u00e1i.<\/p>\n

Ng\u01b0\u1eddi b\u00e1n l\u1ebb ph\u1ea3i \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng xu\u1ea5t hi\u1ec7n m\u1ed7i s\u1ef1 ki\u1ec7n v\u00e0 trong t\u00ecnh hu\u1ed1ng n\u00e0y, anh ta d\u1ef1a tr\u00ean kinh nghi\u1ec7m v\u00e0 hi\u1ec3u bi\u1ebft \u0111\u1ec3 nh\u1eadn \u0111\u1ecbnh r\u1eb1ng kh\u1ea3 n\u0103ng xu\u1ea5t hi\u1ec7n m\u1ed7i s\u1ef1 ki\u1ec7n b\u1eb1ng 50%. Cu\u1ed1i c\u00f9ng, ng\u01b0\u1eddi b\u00e1n l\u1ebb \u01b0\u1edbc t\u00ednh h\u1eadu qu\u1ea3 t\u00e0i ch\u00ednh l\u00e0 n\u1ebfu m\u1edf c\u1eeda h\u00e0ng s\u1ebd c\u00f3 l\u00e3i 40.000 \u0111\u1ed3ng khi kinh t\u1ebf ph\u00e1t tri\u1ec3n m\u1ea1nh v\u00e0 l\u1ed7 30.000 \u0111\u1ed3ng n\u1ebfu c\u00f3 suy tho\u00e1i.<\/p>\n

\u0110\u1ec3 ra quy\u1ebft \u0111\u1ecbnh, ng\u01b0\u1eddi b\u00e1n l\u1ebb c\u1ea7n m\u1ed9t ti\u00eau chu\u1ea9n ra quy\u1ebft \u0111\u1ecbnh cho ph\u00e9p anh ta l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng \u00e1n h\u00e0nh \u0111\u1ed9ng t\u1ed1t nh\u1ea5t trong c\u00e1c ph\u01b0\u01a1ng \u00e1n c\u00f3 th\u1ec3 c\u00f3. V\u00ec s\u1ef1 l\u1ef1a ch\u1ecdn n\u00e0y g\u1eafn v\u1edbi y\u1ebfu t\u1ed1 r\u1ee7i ro, n\u00ean ch\u00fang ta c\u1ea7n bi\u1ebft th\u00e1i \u0111\u1ed9 c\u1ee7a ng\u01b0\u1eddi b\u00e1n l\u1ebb \u0111\u1ed1i v\u1edbi r\u1ee7i ro.\u00a0<\/p>\n

N\u1ebfu ng\u01b0\u1eddi b\u00e1n l\u1ebb kh\u00f4ng ch\u00fa \u00fd \u0111\u1ebfn r\u1ee7i ro, ch\u00fang ta c\u00f3 th\u1ec3 t\u00ednh to\u00e1n t\u00ednh x\u00e1c \u0111\u1ecbnh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi h\u00e0nh vi “m\u1edf c\u1eeda h\u00e0ng” b\u1eb1ng c\u00e1ch c\u0103n c\u1ee9 v\u00e0o h\u1eadu qu\u1ea3 t\u00e0i ch\u00ednh c\u1ee7a m\u1ed7i k\u1ebft c\u1ee5c v\u00e0 gia quy\u1ec1n n\u00f3 theo x\u00e1c su\u1ea5t xu\u1ea5t hi\u1ec7n c\u1ee7a n\u00f3. V\u00ed d\u1ee5:<\/p>\n

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K\u1ebft c\u1ee5c n\u00e0y ch\u1eafc ch\u1eafn l\u1edbn h\u01a1n 0 trong tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng m\u1edf c\u1eeda h\u00e0ng v\u00e0 n\u00f3 bi\u1ec7n minh cho vi\u1ec7c ti\u1ebfp t\u1ee5c th\u1ef1c hi\u1ec7n d\u1ef1 \u00e1n n\u00e0y.<\/p>\n

Song n\u1ebfu ng\u01b0\u1eddi b\u00e1n l\u1ebb l\u00e0 ng\u01b0\u1eddi gh\u00e9t r\u1ee7i ro, ti\u00eau chu\u1ea9n gi\u00e1 tr\u1ecb b\u1eb1ng ti\u1ec1n c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00e0 ti\u00eau chu\u1ea9n th\u00edch h\u1ee3p, v\u00ec anh ta c\u1ea7n nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea7n th\u01b0\u1edfng cho s\u1ef1 r\u1ee7i ro \u0111\u1ec3 ch\u1ea5p nh\u1eadn h\u00e0nh \u0111\u1ed9ng. Vi\u1ec7c t\u1eadn d\u1ee5ng ti\u00eau chu\u1ea9n c\u1ea9n th\u1eadn h\u01a1n ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi t\u00ednh x\u00e1c \u0111\u1ecbnh s\u1ebd l\u00e0m gi\u1ea3m ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi t\u00ednh x\u00e1c \u0111\u1ecbnh c\u1ee7a nh\u00e1nh “m\u1edf c\u1eeda h\u00e0ng” v\u00e0 \u0111i\u1ec1u n\u00e0y c\u0169ng d\u1eabn \u0111\u1ebfn quy\u1ebft \u0111\u1ecbnh ti\u1ebfp t\u1ee5c m\u1edf c\u1eeda h\u00e0ng.<\/p>\n

(T\u00e0i li\u1ec7u tham kh\u1ea3o: Nguy\u1ec5n V\u0103n Ng\u1ecdc, T\u1eeb \u0111i\u1ec3n Kinh t\u1ebf h\u1ecdc, \u0110\u1ea1i h\u1ecdc Kinh t\u1ebf qu\u1ed1c d\u00e2n)<\/i><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

\n C\u00e2y quy\u1ebft \u0111\u1ecbnh (ti\u1ebfng Anh: Decision tree) l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n h\u1ed7 tr\u1ee3 cho vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh trong \u0111i\u1ec1u ki\u1ec7n b\u1ea5t \u0111\u1ecbnh.\n <\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[414],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/26066"}],"collection":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/comments?post=26066"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/26066\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=26066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=26066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=26066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}