{"id":441,"date":"2025-06-06T19:11:58","date_gmt":"2025-06-06T11:11:58","guid":{"rendered":"https:\/\/dangnh.cf\/?p=441"},"modified":"2025-06-06T19:15:39","modified_gmt":"2025-06-06T11:15:39","slug":"rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai","status":"publish","type":"post","link":"https:\/\/dangnh.cf\/vi\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/","title":{"rendered":"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i?"},"content":{"rendered":"

RAG<\/strong> \u2013 vi\u1ebft t\u1eaft c\u1ee7a \u201cRetrieval-Augmented Generation<\/strong>\u201d \u2013 nghe th\u00ec c\u00f3 v\u1ebb ng\u1ea7u, nh\u01b0ng th\u1ef1c ra hi\u1ec3u \u0111\u01a1n gi\u1ea3n th\u00ec n\u00f3 l\u00e0 m\u1ed9t c\u00e1ch gi\u00fap m\u1ea5y con AI\u2026 \u0111\u1ee1 ngu h\u01a1n khi tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi. N\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng AI cho c\u00f4ng vi\u1ec7c chuy\u00ean m\u00f4n, ch\u1eafc ch\u1eafn c\u00f3 l\u00fac b\u1ea1n s\u1ebd th\u1ea5y AI “hallucinate” ra nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi r\u1ea5t kh\u00f3 hi\u1ec3u.<\/p>\n\n\n\n

V\u1ea5n \u0111\u1ec1 c\u1ee7a AI: Hay \u201cn\u00f3i x\u1ea1o\u201d v\u00ec\u2026 qu\u00ean s\u00e1ch gi\u00e1o khoa<\/h2>\n\n\n\n

AI nh\u01b0 ChatGPT, Claude, hay m\u1ea5y con LLM kh\u00e1c \u2013 th\u1eadt ra ch\u1ec9 l\u00e0 m\u1ea5y c\u1ed7 m\u00e1y \u0111o\u00e1n ch\u1eef si\u00eau c\u1ea5p, b\u1ea3n ch\u1ea5t l\u00e0 m\u1ed9t function kh\u1ed5ng l\u1ed3 d\u00e0i d\u1eb1ng d\u1eb7c. “Function” (= Model) n\u00e0y \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n t\u1eeb c\u1ea3 t\u1ea5n d\u1eef li\u1ec7u c\u00f3 s\u1eb5n, nh\u01b0ng sau hu\u1ea5n luy\u1ec7n th\u00ec kh\u00f4ng c\u00f2n truy c\u1eadp \u0111\u01b0\u1ee3c m\u1ea5y d\u1eef li\u1ec7u \u0111\u00f3 n\u1eefa (tr\u1eeb khi update model). Th\u00e0nh ra, h\u1ecfi m\u1ea5y c\u00e2u \u201cki\u1ebfn th\u1ee9c m\u1edbi\u201d, ho\u1eb7c \u201cn\u1ed9i b\u1ed9 c\u00f4ng ty\u201d, th\u00ec n\u00f3 \u0111\u00e0nh b\u1ecba \u0111\u1ea1i ho\u1eb7c xin l\u1ed7i.<\/p>\n\n\n\n

V\u00ed d\u1ee5:
\u2022 H\u1ecfi: \u201cTrong ch\u00ednh s\u00e1ch c\u00f4ng ty m\u00ecnh c\u00f3 bao nhi\u00eau ng\u00e0y ph\u00e9p n\u0103m?\u201d
\u2022 AI: \u201cTh\u00f4ng th\u01b0\u1eddng \u1edf Vi\u1ec7t Nam l\u00e0 12 ng\u00e0y\u2026\u201d (h\u00ean xui \u0111\u00fang, m\u00e0 c\u0169ng h\u00ean xui sai b\u00e9t)<\/p>\n\n\n\n

RAG<\/strong> ra \u0111\u1eddi: Cho AI\u2026 \u0111i tra Google tr\u01b0\u1edbc khi tr\u1ea3 l\u1eddi<\/h2>\n\n\n
\n
\"RAG<\/a>
RAG flow<\/figcaption><\/figure>\n<\/div>\n\n\n

RAG<\/strong> l\u00e0 k\u1ef9 thu\u1eadt gi\u00fap AI l\u1ea5y th\u00eam ki\u1ebfn th\u1ee9c t\u1ee9c th\u00ec t\u1eeb m\u1ed9t kho d\u1eef li\u1ec7u (VD: t\u00e0i li\u1ec7u c\u00f4ng ty, c\u01a1 s\u1edf tri th\u1ee9c, database s\u1ea3n ph\u1ea9m\u2026). Quy tr\u00ecnh ki\u1ec3u nh\u01b0 n\u00e0y:
1. Nh\u1eadn c\u00e2u h\u1ecfi t\u1eeb ng\u01b0\u1eddi d\u00f9ng
2. \u0110i t\u00ecm t\u00e0i li\u1ec7u li\u00ean quan (g\u1ecdi l\u00e0 b\u01b0\u1edbc \u201cretrieval\u201d \u2013 t\u00ecm ki\u1ebfm)<\/em>
3. \u0110\u01b0a t\u00e0i li\u1ec7u \u0111\u00f3 v\u00e0o l\u00e0m \u201cb\u00e0i g\u1ee3i \u00fd\u201d cho AI
4. AI d\u1ef1a v\u00e0o t\u00e0i li\u1ec7u \u0111\u00f3 \u0111\u1ec3 vi\u1ebft c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c h\u01a1n<\/p>\n\n\n\n

N\u00f3i d\u1ec5 hi\u1ec3u th\u00ec gi\u1ed1ng nh\u01b0 b\u1ea1n h\u1ecfi tr\u1ee3 l\u00fd c\u1ee7a m\u00ecnh m\u1ed9t c\u00e2u kh\u00f3. Thay v\u00ec \u0111o\u00e1n m\u00f2, n\u00f3 ch\u1ea1y \u0111i l\u1ee5c t\u00e0i li\u1ec7u r\u1ed3i quay l\u1ea1i tr\u1ea3 l\u1eddi c\u1ea9n th\u1eadn h\u01a1n.<\/p>\n\n\n\n

M\u1ed9t v\u00ed d\u1ee5 d\u1ec5 h\u00ecnh dung<\/h2>\n\n\n\n

B\u1ea1n x\u00e2y m\u1ed9t chatbot cho c\u00f4ng ty b\u1ea3o hi\u1ec3m, kh\u00e1ch v\u00e0o h\u1ecfi:<\/p>\n\n\n\n

\n

\u201cN\u1ebfu t\u00f4i b\u1ecb tai n\u1ea1n xe \u1edf n\u01b0\u1edbc ngo\u00e0i th\u00ec c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ec1n kh\u00f4ng?\u201d<\/p>\n<\/blockquote>\n\n\n\n

B\u00ecnh th\u01b0\u1eddng AI s\u1ebd\u2026 \u0111o\u00e1n m\u00f2. Nh\u01b0ng n\u1ebfu b\u1ea1n t\u00edch h\u1ee3p RAG:
\u2022 N\u00f3 s\u1ebd t\u00ecm file PDF \u201cCh\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m du l\u1ecbch 2025\u201d
\u2022 L\u1ecdc ra \u0111o\u1ea1n c\u00f3 n\u1ed9i dung li\u00ean quan
\u2022 Tr\u1ea3 l\u1eddi: \u201cTheo ch\u00ednh s\u00e1ch n\u0103m 2025, n\u1ebfu b\u1ea1n c\u00f3 g\u00f3i m\u1edf r\u1ed9ng qu\u1ed1c t\u1ebf th\u00ec \u0111\u01b0\u1ee3c b\u1ed3i th\u01b0\u1eddng trong tr\u01b0\u1eddng h\u1ee3p tai n\u1ea1n \u1edf n\u01b0\u1edbc ngo\u00e0i.\u201d<\/p>\n\n\n\n

Tr\u1ea3 l\u1eddi m\u01b0\u1ee3t, \u0111\u00fang, v\u00e0 \u0111\u00e1ng tin h\u01a1n nhi\u1ec1u!<\/p>\n\n\n\n

L\u00e0m sao \u0111\u1ec3 x\u00e2y RAG?<\/h2>\n\n\n\n

T\u00f3m t\u1eaft ng\u1eafn g\u1ecdn:
\u2022 B\u01b0\u1edbc 1: T\u1ea1o \u201cvector database\u201d t\u1eeb t\u00e0i li\u1ec7u (d\u00f9ng tools nh\u01b0 FAISS, Weaviate, ho\u1eb7c Pinecone)
\u2022 B\u01b0\u1edbc 2: Khi c\u00f3 c\u00e2u h\u1ecfi, nh\u00fang (embed) n\u00f3 v\u00e0 t\u00ecm ki\u1ebfm trong vector DB
\u2022 B\u01b0\u1edbc 3: L\u1ea5y k\u1ebft qu\u1ea3 v\u00e0 nh\u00e9t v\u00e0o prompt \u0111\u1ec3 AI tr\u1ea3 l\u1eddi<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n x\u00e0i LangChain ho\u1eb7c LlamaIndex th\u00ec m\u1ea5y b\u01b0\u1edbc n\u00e0y c\u00f3 s\u1eb5n nh\u01b0 block lego, gh\u00e9p l\u00e0 ch\u1ea1y th\u00f4i.<\/p>\n\n\n\n

T\u1ed5ng k\u1ebft<\/h2>\n\n\n\n

RAG kh\u00f4ng ph\u1ea3i l\u00e0 si\u00eau n\u0103ng l\u1ef1c, nh\u01b0ng l\u00e0 c\u00e1ch c\u1ef1c k\u1ef3 th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u00fap AI:
\u2022 Tr\u1ea3 l\u1eddi \u0111\u00fang h\u01a1n, c\u1eadp nh\u1eadt h\u01a1n
\u2022 Hi\u1ec3u \u0111\u01b0\u1ee3c \u201cki\u1ebfn th\u1ee9c n\u1ed9i b\u1ed9\u201d
\u2022 Tr\u00e1nh n\u00f3i nh\u1ea3m, b\u1ecba chuy\u1ec7n<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n \u0111ang x\u00e2y AI assistant, chatbot cho c\u00f4ng ty, hay h\u1ec7 th\u1ed1ng h\u1ecfi \u0111\u00e1p \u2013 \u0111\u1eebng b\u1ecf qua RAG. N\u1ebfu b\u1ea1n mu\u1ed1n bi\u1ebft c\u00e1ch implement RAG cho LLM c\u1ee7a m\u00ecnh th\u00ec \u0111\u1ec3 l\u1ea1i comment v\u00e0 m\u00ecnh s\u1ebd l\u00ean b\u00e0i h\u01b0\u1edbng d\u1eabn nh\u00e9!

Peace!<\/p>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

RAG \u2013 vi\u1ebft t\u1eaft c\u1ee7a \u201cRetrieval-Augmented Generation\u201d \u2013 nghe th\u00ec c\u00f3 v\u1ebb ng\u1ea7u, nh\u01b0ng th\u1ef1c ra hi\u1ec3u \u0111\u01a1n gi\u1ea3n th\u00ec n\u00f3 l\u00e0 m\u1ed9t c\u00e1ch gi\u00fap m\u1ea5y con AI\u2026 \u0111\u1ee1 ngu h\u01a1n khi tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi. N\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng AI cho c\u00f4ng vi\u1ec7c chuy\u00ean m\u00f4n, ch\u1eafc ch\u1eafn c\u00f3 l\u00fac b\u1ea1n s\u1ebd th\u1ea5y AI “hallucinate” ra nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi r\u1ea5t kh\u00f3 hi\u1ec3u. V\u1ea5n \u0111\u1ec1 c\u1ee7a AI: Hay \u201cn\u00f3i x\u1ea1o\u201d v\u00ec\u2026 qu\u00ean s\u00e1ch gi\u00e1o khoa AI nh\u01b0 ChatGPT, Claude, hay m\u1ea5y con LLM kh\u00e1c \u2013 th\u1eadt ra ch\u1ec9 l\u00e0 m\u1ea5y c\u1ed7 m\u00e1y \u0111o\u00e1n ch\u1eef si\u00eau c\u1ea5p, b\u1ea3n ch\u1ea5t l\u00e0 m\u1ed9t function kh\u1ed5ng l\u1ed3 d\u00e0i d\u1eb1ng d\u1eb7c. “Function” (= Model) n\u00e0y \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n t\u1eeb c\u1ea3 t\u1ea5n d\u1eef li\u1ec7u c\u00f3 s\u1eb5n, nh\u01b0ng sau hu\u1ea5n luy\u1ec7n th\u00ec kh\u00f4ng c\u00f2n truy c\u1eadp \u0111\u01b0\u1ee3c m\u1ea5y d\u1eef li\u1ec7u \u0111\u00f3 n\u1eefa (tr\u1eeb khi update model). Th\u00e0nh ra, h\u1ecfi m\u1ea5y c\u00e2u \u201cki\u1ebfn th\u1ee9c m\u1edbi\u201d, ho\u1eb7c \u201cn\u1ed9i b\u1ed9 c\u00f4ng ty\u201d, th\u00ec n\u00f3 \u0111\u00e0nh b\u1ecba \u0111\u1ea1i ho\u1eb7c xin l\u1ed7i. V\u00ed d\u1ee5:\u2022 H\u1ecfi: \u201cTrong ch\u00ednh s\u00e1ch c\u00f4ng ty m\u00ecnh c\u00f3 bao nhi\u00eau ng\u00e0y ph\u00e9p n\u0103m?\u201d\u2022 AI: \u201cTh\u00f4ng th\u01b0\u1eddng \u1edf Vi\u1ec7t Nam l\u00e0 12 ng\u00e0y\u2026\u201d (h\u00ean xui \u0111\u00fang, m\u00e0 c\u0169ng h\u00ean xui sai b\u00e9t) RAG ra \u0111\u1eddi: Cho AI\u2026 \u0111i tra Google tr\u01b0\u1edbc khi tr\u1ea3 l\u1eddi RAG l\u00e0 k\u1ef9 thu\u1eadt gi\u00fap AI l\u1ea5y th\u00eam ki\u1ebfn th\u1ee9c t\u1ee9c th\u00ec t\u1eeb m\u1ed9t kho d\u1eef li\u1ec7u (VD: t\u00e0i li\u1ec7u c\u00f4ng ty, c\u01a1 s\u1edf tri th\u1ee9c, database s\u1ea3n ph\u1ea9m\u2026). Quy tr\u00ecnh ki\u1ec3u nh\u01b0 n\u00e0y: 1. Nh\u1eadn c\u00e2u h\u1ecfi t\u1eeb ng\u01b0\u1eddi d\u00f9ng 2. \u0110i t\u00ecm t\u00e0i li\u1ec7u li\u00ean quan (g\u1ecdi l\u00e0 b\u01b0\u1edbc \u201cretrieval\u201d \u2013 t\u00ecm ki\u1ebfm) 3. \u0110\u01b0a t\u00e0i li\u1ec7u \u0111\u00f3 v\u00e0o l\u00e0m \u201cb\u00e0i g\u1ee3i \u00fd\u201d cho AI 4. AI d\u1ef1a v\u00e0o t\u00e0i li\u1ec7u \u0111\u00f3 \u0111\u1ec3 vi\u1ebft c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c h\u01a1n N\u00f3i d\u1ec5 hi\u1ec3u th\u00ec gi\u1ed1ng nh\u01b0 b\u1ea1n h\u1ecfi tr\u1ee3 l\u00fd c\u1ee7a m\u00ecnh m\u1ed9t c\u00e2u kh\u00f3. Thay v\u00ec \u0111o\u00e1n m\u00f2, n\u00f3 ch\u1ea1y \u0111i l\u1ee5c t\u00e0i li\u1ec7u r\u1ed3i quay l\u1ea1i tr\u1ea3 l\u1eddi c\u1ea9n th\u1eadn h\u01a1n. M\u1ed9t v\u00ed d\u1ee5 d\u1ec5 h\u00ecnh dung B\u1ea1n x\u00e2y m\u1ed9t chatbot cho c\u00f4ng ty b\u1ea3o hi\u1ec3m, kh\u00e1ch v\u00e0o h\u1ecfi: \u201cN\u1ebfu t\u00f4i b\u1ecb tai n\u1ea1n xe \u1edf n\u01b0\u1edbc ngo\u00e0i th\u00ec c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ec1n kh\u00f4ng?\u201d B\u00ecnh th\u01b0\u1eddng AI s\u1ebd\u2026 \u0111o\u00e1n m\u00f2. Nh\u01b0ng n\u1ebfu b\u1ea1n t\u00edch h\u1ee3p RAG: \u2022 N\u00f3 s\u1ebd t\u00ecm file PDF \u201cCh\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m du l\u1ecbch 2025\u201d \u2022 L\u1ecdc ra \u0111o\u1ea1n c\u00f3 n\u1ed9i dung li\u00ean quan \u2022 Tr\u1ea3 l\u1eddi: \u201cTheo ch\u00ednh s\u00e1ch n\u0103m 2025, n\u1ebfu b\u1ea1n c\u00f3 g\u00f3i m\u1edf r\u1ed9ng qu\u1ed1c t\u1ebf th\u00ec \u0111\u01b0\u1ee3c b\u1ed3i th\u01b0\u1eddng trong tr\u01b0\u1eddng h\u1ee3p tai n\u1ea1n \u1edf n\u01b0\u1edbc ngo\u00e0i.\u201d Tr\u1ea3 l\u1eddi m\u01b0\u1ee3t, \u0111\u00fang, v\u00e0 \u0111\u00e1ng tin h\u01a1n nhi\u1ec1u! L\u00e0m sao \u0111\u1ec3 x\u00e2y RAG? T\u00f3m t\u1eaft ng\u1eafn g\u1ecdn:\u2022 B\u01b0\u1edbc 1: T\u1ea1o \u201cvector database\u201d t\u1eeb t\u00e0i li\u1ec7u (d\u00f9ng tools nh\u01b0 FAISS, Weaviate, ho\u1eb7c Pinecone)\u2022 B\u01b0\u1edbc 2: Khi c\u00f3 c\u00e2u h\u1ecfi, nh\u00fang (embed) n\u00f3 v\u00e0 t\u00ecm ki\u1ebfm trong vector DB\u2022 B\u01b0\u1edbc 3: L\u1ea5y k\u1ebft qu\u1ea3 v\u00e0 nh\u00e9t v\u00e0o prompt \u0111\u1ec3 AI tr\u1ea3 l\u1eddi N\u1ebfu b\u1ea1n x\u00e0i LangChain ho\u1eb7c LlamaIndex th\u00ec m\u1ea5y b\u01b0\u1edbc n\u00e0y c\u00f3 s\u1eb5n nh\u01b0 block lego, gh\u00e9p l\u00e0 ch\u1ea1y th\u00f4i. T\u1ed5ng k\u1ebft RAG kh\u00f4ng ph\u1ea3i l\u00e0 si\u00eau n\u0103ng l\u1ef1c, nh\u01b0ng l\u00e0 c\u00e1ch c\u1ef1c k\u1ef3 th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u00fap AI:\u2022 Tr\u1ea3 l\u1eddi \u0111\u00fang h\u01a1n, c\u1eadp nh\u1eadt h\u01a1n\u2022 Hi\u1ec3u \u0111\u01b0\u1ee3c \u201cki\u1ebfn th\u1ee9c n\u1ed9i b\u1ed9\u201d\u2022 Tr\u00e1nh n\u00f3i nh\u1ea3m, b\u1ecba chuy\u1ec7n N\u1ebfu b\u1ea1n \u0111ang x\u00e2y AI assistant, chatbot cho c\u00f4ng ty, hay h\u1ec7 th\u1ed1ng h\u1ecfi \u0111\u00e1p \u2013 \u0111\u1eebng b\u1ecf qua RAG. N\u1ebfu b\u1ea1n mu\u1ed1n bi\u1ebft c\u00e1ch implement RAG cho LLM c\u1ee7a m\u00ecnh th\u00ec \u0111\u1ec3 l\u1ea1i comment v\u00e0 m\u00ecnh s\u1ebd l\u00ean b\u00e0i h\u01b0\u1edbng d\u1eabn nh\u00e9! Peace!<\/p>","protected":false},"author":1,"featured_media":442,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[20],"tags":[21,16,22],"class_list":["post-441","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai","tag-ai","tag-architecture","tag-rag"],"yoast_head":"\nRAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i? - Mark's Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dangnh.cf\/vi\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i? - Mark's Blog\" \/>\n<meta property=\"og:description\" content=\"RAG \u2013 vi\u1ebft t\u1eaft c\u1ee7a \u201cRetrieval-Augmented Generation\u201d \u2013 nghe th\u00ec c\u00f3 v\u1ebb ng\u1ea7u, nh\u01b0ng th\u1ef1c ra hi\u1ec3u \u0111\u01a1n gi\u1ea3n th\u00ec n\u00f3 l\u00e0 m\u1ed9t c\u00e1ch gi\u00fap m\u1ea5y con AI\u2026 \u0111\u1ee1 ngu h\u01a1n khi tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi. N\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng AI cho c\u00f4ng vi\u1ec7c chuy\u00ean m\u00f4n, ch\u1eafc ch\u1eafn c\u00f3 l\u00fac b\u1ea1n s\u1ebd th\u1ea5y AI “hallucinate” ra nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi r\u1ea5t kh\u00f3 hi\u1ec3u. V\u1ea5n \u0111\u1ec1 c\u1ee7a AI: Hay \u201cn\u00f3i x\u1ea1o\u201d v\u00ec\u2026 qu\u00ean s\u00e1ch gi\u00e1o khoa AI nh\u01b0 ChatGPT, Claude, hay m\u1ea5y con LLM kh\u00e1c \u2013 th\u1eadt ra ch\u1ec9 l\u00e0 m\u1ea5y c\u1ed7 m\u00e1y \u0111o\u00e1n ch\u1eef si\u00eau c\u1ea5p, b\u1ea3n ch\u1ea5t l\u00e0 m\u1ed9t function kh\u1ed5ng l\u1ed3 d\u00e0i d\u1eb1ng d\u1eb7c. “Function” (= Model) n\u00e0y \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n t\u1eeb c\u1ea3 t\u1ea5n d\u1eef li\u1ec7u c\u00f3 s\u1eb5n, nh\u01b0ng sau hu\u1ea5n luy\u1ec7n th\u00ec kh\u00f4ng c\u00f2n truy c\u1eadp \u0111\u01b0\u1ee3c m\u1ea5y d\u1eef li\u1ec7u \u0111\u00f3 n\u1eefa (tr\u1eeb khi update model). Th\u00e0nh ra, h\u1ecfi m\u1ea5y c\u00e2u \u201cki\u1ebfn th\u1ee9c m\u1edbi\u201d, ho\u1eb7c \u201cn\u1ed9i b\u1ed9 c\u00f4ng ty\u201d, th\u00ec n\u00f3 \u0111\u00e0nh b\u1ecba \u0111\u1ea1i ho\u1eb7c xin l\u1ed7i. V\u00ed d\u1ee5:\u2022 H\u1ecfi: \u201cTrong ch\u00ednh s\u00e1ch c\u00f4ng ty m\u00ecnh c\u00f3 bao nhi\u00eau ng\u00e0y ph\u00e9p n\u0103m?\u201d\u2022 AI: \u201cTh\u00f4ng th\u01b0\u1eddng \u1edf Vi\u1ec7t Nam l\u00e0 12 ng\u00e0y\u2026\u201d (h\u00ean xui \u0111\u00fang, m\u00e0 c\u0169ng h\u00ean xui sai b\u00e9t) RAG ra \u0111\u1eddi: Cho AI\u2026 \u0111i tra Google tr\u01b0\u1edbc khi tr\u1ea3 l\u1eddi RAG l\u00e0 k\u1ef9 thu\u1eadt gi\u00fap AI l\u1ea5y th\u00eam ki\u1ebfn th\u1ee9c t\u1ee9c th\u00ec t\u1eeb m\u1ed9t kho d\u1eef li\u1ec7u (VD: t\u00e0i li\u1ec7u c\u00f4ng ty, c\u01a1 s\u1edf tri th\u1ee9c, database s\u1ea3n ph\u1ea9m\u2026). Quy tr\u00ecnh ki\u1ec3u nh\u01b0 n\u00e0y: 1. Nh\u1eadn c\u00e2u h\u1ecfi t\u1eeb ng\u01b0\u1eddi d\u00f9ng 2. \u0110i t\u00ecm t\u00e0i li\u1ec7u li\u00ean quan (g\u1ecdi l\u00e0 b\u01b0\u1edbc \u201cretrieval\u201d \u2013 t\u00ecm ki\u1ebfm) 3. \u0110\u01b0a t\u00e0i li\u1ec7u \u0111\u00f3 v\u00e0o l\u00e0m \u201cb\u00e0i g\u1ee3i \u00fd\u201d cho AI 4. AI d\u1ef1a v\u00e0o t\u00e0i li\u1ec7u \u0111\u00f3 \u0111\u1ec3 vi\u1ebft c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c h\u01a1n N\u00f3i d\u1ec5 hi\u1ec3u th\u00ec gi\u1ed1ng nh\u01b0 b\u1ea1n h\u1ecfi tr\u1ee3 l\u00fd c\u1ee7a m\u00ecnh m\u1ed9t c\u00e2u kh\u00f3. Thay v\u00ec \u0111o\u00e1n m\u00f2, n\u00f3 ch\u1ea1y \u0111i l\u1ee5c t\u00e0i li\u1ec7u r\u1ed3i quay l\u1ea1i tr\u1ea3 l\u1eddi c\u1ea9n th\u1eadn h\u01a1n. M\u1ed9t v\u00ed d\u1ee5 d\u1ec5 h\u00ecnh dung B\u1ea1n x\u00e2y m\u1ed9t chatbot cho c\u00f4ng ty b\u1ea3o hi\u1ec3m, kh\u00e1ch v\u00e0o h\u1ecfi: \u201cN\u1ebfu t\u00f4i b\u1ecb tai n\u1ea1n xe \u1edf n\u01b0\u1edbc ngo\u00e0i th\u00ec c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ec1n kh\u00f4ng?\u201d B\u00ecnh th\u01b0\u1eddng AI s\u1ebd\u2026 \u0111o\u00e1n m\u00f2. Nh\u01b0ng n\u1ebfu b\u1ea1n t\u00edch h\u1ee3p RAG: \u2022 N\u00f3 s\u1ebd t\u00ecm file PDF \u201cCh\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m du l\u1ecbch 2025\u201d \u2022 L\u1ecdc ra \u0111o\u1ea1n c\u00f3 n\u1ed9i dung li\u00ean quan \u2022 Tr\u1ea3 l\u1eddi: \u201cTheo ch\u00ednh s\u00e1ch n\u0103m 2025, n\u1ebfu b\u1ea1n c\u00f3 g\u00f3i m\u1edf r\u1ed9ng qu\u1ed1c t\u1ebf th\u00ec \u0111\u01b0\u1ee3c b\u1ed3i th\u01b0\u1eddng trong tr\u01b0\u1eddng h\u1ee3p tai n\u1ea1n \u1edf n\u01b0\u1edbc ngo\u00e0i.\u201d Tr\u1ea3 l\u1eddi m\u01b0\u1ee3t, \u0111\u00fang, v\u00e0 \u0111\u00e1ng tin h\u01a1n nhi\u1ec1u! L\u00e0m sao \u0111\u1ec3 x\u00e2y RAG? T\u00f3m t\u1eaft ng\u1eafn g\u1ecdn:\u2022 B\u01b0\u1edbc 1: T\u1ea1o \u201cvector database\u201d t\u1eeb t\u00e0i li\u1ec7u (d\u00f9ng tools nh\u01b0 FAISS, Weaviate, ho\u1eb7c Pinecone)\u2022 B\u01b0\u1edbc 2: Khi c\u00f3 c\u00e2u h\u1ecfi, nh\u00fang (embed) n\u00f3 v\u00e0 t\u00ecm ki\u1ebfm trong vector DB\u2022 B\u01b0\u1edbc 3: L\u1ea5y k\u1ebft qu\u1ea3 v\u00e0 nh\u00e9t v\u00e0o prompt \u0111\u1ec3 AI tr\u1ea3 l\u1eddi N\u1ebfu b\u1ea1n x\u00e0i LangChain ho\u1eb7c LlamaIndex th\u00ec m\u1ea5y b\u01b0\u1edbc n\u00e0y c\u00f3 s\u1eb5n nh\u01b0 block lego, gh\u00e9p l\u00e0 ch\u1ea1y th\u00f4i. T\u1ed5ng k\u1ebft RAG kh\u00f4ng ph\u1ea3i l\u00e0 si\u00eau n\u0103ng l\u1ef1c, nh\u01b0ng l\u00e0 c\u00e1ch c\u1ef1c k\u1ef3 th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u00fap AI:\u2022 Tr\u1ea3 l\u1eddi \u0111\u00fang h\u01a1n, c\u1eadp nh\u1eadt h\u01a1n\u2022 Hi\u1ec3u \u0111\u01b0\u1ee3c \u201cki\u1ebfn th\u1ee9c n\u1ed9i b\u1ed9\u201d\u2022 Tr\u00e1nh n\u00f3i nh\u1ea3m, b\u1ecba chuy\u1ec7n N\u1ebfu b\u1ea1n \u0111ang x\u00e2y AI assistant, chatbot cho c\u00f4ng ty, hay h\u1ec7 th\u1ed1ng h\u1ecfi \u0111\u00e1p \u2013 \u0111\u1eebng b\u1ecf qua RAG. N\u1ebfu b\u1ea1n mu\u1ed1n bi\u1ebft c\u00e1ch implement RAG cho LLM c\u1ee7a m\u00ecnh th\u00ec \u0111\u1ec3 l\u1ea1i comment v\u00e0 m\u00ecnh s\u1ebd l\u00ean b\u00e0i h\u01b0\u1edbng d\u1eabn nh\u00e9! Peace!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dangnh.cf\/vi\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/\" \/>\n<meta property=\"og:site_name\" content=\"Mark's Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/dangtute\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-06T11:11:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-06T11:15:39+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/dangnh.cf\/wp-content\/uploads\/2025\/06\/ai-rag.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1536\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/dangnh.cf\\\/#\\\/schema\\\/person\\\/8f3b9db3b250186af217fbeec88eda9c\"},\"headline\":\"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i?\",\"datePublished\":\"2025-06-06T11:11:58+00:00\",\"dateModified\":\"2025-06-06T11:15:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/\"},\"wordCount\":864,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/dangnh.cf\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/ai-rag.png?fit=1536%2C1024&ssl=1\",\"keywords\":[\"Ai\",\"architecture\",\"RAG\"],\"articleSection\":[\"AI\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/\",\"url\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/\",\"name\":\"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i? - Mark's Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/dangnh.cf\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/ai-rag.png?fit=1536%2C1024&ssl=1\",\"datePublished\":\"2025-06-06T11:11:58+00:00\",\"dateModified\":\"2025-06-06T11:15:39+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/#\\\/schema\\\/person\\\/8f3b9db3b250186af217fbeec88eda9c\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#primaryimage\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/dangnh.cf\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/ai-rag.png?fit=1536%2C1024&ssl=1\",\"contentUrl\":\"https:\\\/\\\/i0.wp.com\\\/dangnh.cf\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/ai-rag.png?fit=1536%2C1024&ssl=1\",\"width\":1536,\"height\":1024,\"caption\":\"RAG trong AI\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/dangnh.cf\\\/2025\\\/06\\\/06\\\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/dangnh.cf\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/dangnh.cf\\\/#website\",\"url\":\"https:\\\/\\\/dangnh.cf\\\/\",\"name\":\"Mark's Blog\",\"description\":\"A blog about Programming and Technical Stuffs\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/dangnh.cf\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/dangnh.cf\\\/#\\\/schema\\\/person\\\/8f3b9db3b250186af217fbeec88eda9c\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d838feab6bbd5e774c608b656a29ab0d54981b88fa4b563a83d7635108b6c76e?s=96&d=retro&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d838feab6bbd5e774c608b656a29ab0d54981b88fa4b563a83d7635108b6c76e?s=96&d=retro&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d838feab6bbd5e774c608b656a29ab0d54981b88fa4b563a83d7635108b6c76e?s=96&d=retro&r=g\",\"caption\":\"admin\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i? - Mark's Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/dangnh.cf\/vi\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/","og_locale":"vi_VN","og_type":"article","og_title":"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i? - Mark's Blog","og_description":"RAG \u2013 vi\u1ebft t\u1eaft c\u1ee7a \u201cRetrieval-Augmented Generation\u201d \u2013 nghe th\u00ec c\u00f3 v\u1ebb ng\u1ea7u, nh\u01b0ng th\u1ef1c ra hi\u1ec3u \u0111\u01a1n gi\u1ea3n th\u00ec n\u00f3 l\u00e0 m\u1ed9t c\u00e1ch gi\u00fap m\u1ea5y con AI\u2026 \u0111\u1ee1 ngu h\u01a1n khi tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi. N\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng AI cho c\u00f4ng vi\u1ec7c chuy\u00ean m\u00f4n, ch\u1eafc ch\u1eafn c\u00f3 l\u00fac b\u1ea1n s\u1ebd th\u1ea5y AI “hallucinate” ra nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi r\u1ea5t kh\u00f3 hi\u1ec3u. V\u1ea5n \u0111\u1ec1 c\u1ee7a AI: Hay \u201cn\u00f3i x\u1ea1o\u201d v\u00ec\u2026 qu\u00ean s\u00e1ch gi\u00e1o khoa AI nh\u01b0 ChatGPT, Claude, hay m\u1ea5y con LLM kh\u00e1c \u2013 th\u1eadt ra ch\u1ec9 l\u00e0 m\u1ea5y c\u1ed7 m\u00e1y \u0111o\u00e1n ch\u1eef si\u00eau c\u1ea5p, b\u1ea3n ch\u1ea5t l\u00e0 m\u1ed9t function kh\u1ed5ng l\u1ed3 d\u00e0i d\u1eb1ng d\u1eb7c. “Function” (= Model) n\u00e0y \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n t\u1eeb c\u1ea3 t\u1ea5n d\u1eef li\u1ec7u c\u00f3 s\u1eb5n, nh\u01b0ng sau hu\u1ea5n luy\u1ec7n th\u00ec kh\u00f4ng c\u00f2n truy c\u1eadp \u0111\u01b0\u1ee3c m\u1ea5y d\u1eef li\u1ec7u \u0111\u00f3 n\u1eefa (tr\u1eeb khi update model). Th\u00e0nh ra, h\u1ecfi m\u1ea5y c\u00e2u \u201cki\u1ebfn th\u1ee9c m\u1edbi\u201d, ho\u1eb7c \u201cn\u1ed9i b\u1ed9 c\u00f4ng ty\u201d, th\u00ec n\u00f3 \u0111\u00e0nh b\u1ecba \u0111\u1ea1i ho\u1eb7c xin l\u1ed7i. V\u00ed d\u1ee5:\u2022 H\u1ecfi: \u201cTrong ch\u00ednh s\u00e1ch c\u00f4ng ty m\u00ecnh c\u00f3 bao nhi\u00eau ng\u00e0y ph\u00e9p n\u0103m?\u201d\u2022 AI: \u201cTh\u00f4ng th\u01b0\u1eddng \u1edf Vi\u1ec7t Nam l\u00e0 12 ng\u00e0y\u2026\u201d (h\u00ean xui \u0111\u00fang, m\u00e0 c\u0169ng h\u00ean xui sai b\u00e9t) RAG ra \u0111\u1eddi: Cho AI\u2026 \u0111i tra Google tr\u01b0\u1edbc khi tr\u1ea3 l\u1eddi RAG l\u00e0 k\u1ef9 thu\u1eadt gi\u00fap AI l\u1ea5y th\u00eam ki\u1ebfn th\u1ee9c t\u1ee9c th\u00ec t\u1eeb m\u1ed9t kho d\u1eef li\u1ec7u (VD: t\u00e0i li\u1ec7u c\u00f4ng ty, c\u01a1 s\u1edf tri th\u1ee9c, database s\u1ea3n ph\u1ea9m\u2026). Quy tr\u00ecnh ki\u1ec3u nh\u01b0 n\u00e0y: 1. Nh\u1eadn c\u00e2u h\u1ecfi t\u1eeb ng\u01b0\u1eddi d\u00f9ng 2. \u0110i t\u00ecm t\u00e0i li\u1ec7u li\u00ean quan (g\u1ecdi l\u00e0 b\u01b0\u1edbc \u201cretrieval\u201d \u2013 t\u00ecm ki\u1ebfm) 3. \u0110\u01b0a t\u00e0i li\u1ec7u \u0111\u00f3 v\u00e0o l\u00e0m \u201cb\u00e0i g\u1ee3i \u00fd\u201d cho AI 4. AI d\u1ef1a v\u00e0o t\u00e0i li\u1ec7u \u0111\u00f3 \u0111\u1ec3 vi\u1ebft c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c h\u01a1n N\u00f3i d\u1ec5 hi\u1ec3u th\u00ec gi\u1ed1ng nh\u01b0 b\u1ea1n h\u1ecfi tr\u1ee3 l\u00fd c\u1ee7a m\u00ecnh m\u1ed9t c\u00e2u kh\u00f3. Thay v\u00ec \u0111o\u00e1n m\u00f2, n\u00f3 ch\u1ea1y \u0111i l\u1ee5c t\u00e0i li\u1ec7u r\u1ed3i quay l\u1ea1i tr\u1ea3 l\u1eddi c\u1ea9n th\u1eadn h\u01a1n. M\u1ed9t v\u00ed d\u1ee5 d\u1ec5 h\u00ecnh dung B\u1ea1n x\u00e2y m\u1ed9t chatbot cho c\u00f4ng ty b\u1ea3o hi\u1ec3m, kh\u00e1ch v\u00e0o h\u1ecfi: \u201cN\u1ebfu t\u00f4i b\u1ecb tai n\u1ea1n xe \u1edf n\u01b0\u1edbc ngo\u00e0i th\u00ec c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ec1n kh\u00f4ng?\u201d B\u00ecnh th\u01b0\u1eddng AI s\u1ebd\u2026 \u0111o\u00e1n m\u00f2. Nh\u01b0ng n\u1ebfu b\u1ea1n t\u00edch h\u1ee3p RAG: \u2022 N\u00f3 s\u1ebd t\u00ecm file PDF \u201cCh\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m du l\u1ecbch 2025\u201d \u2022 L\u1ecdc ra \u0111o\u1ea1n c\u00f3 n\u1ed9i dung li\u00ean quan \u2022 Tr\u1ea3 l\u1eddi: \u201cTheo ch\u00ednh s\u00e1ch n\u0103m 2025, n\u1ebfu b\u1ea1n c\u00f3 g\u00f3i m\u1edf r\u1ed9ng qu\u1ed1c t\u1ebf th\u00ec \u0111\u01b0\u1ee3c b\u1ed3i th\u01b0\u1eddng trong tr\u01b0\u1eddng h\u1ee3p tai n\u1ea1n \u1edf n\u01b0\u1edbc ngo\u00e0i.\u201d Tr\u1ea3 l\u1eddi m\u01b0\u1ee3t, \u0111\u00fang, v\u00e0 \u0111\u00e1ng tin h\u01a1n nhi\u1ec1u! L\u00e0m sao \u0111\u1ec3 x\u00e2y RAG? T\u00f3m t\u1eaft ng\u1eafn g\u1ecdn:\u2022 B\u01b0\u1edbc 1: T\u1ea1o \u201cvector database\u201d t\u1eeb t\u00e0i li\u1ec7u (d\u00f9ng tools nh\u01b0 FAISS, Weaviate, ho\u1eb7c Pinecone)\u2022 B\u01b0\u1edbc 2: Khi c\u00f3 c\u00e2u h\u1ecfi, nh\u00fang (embed) n\u00f3 v\u00e0 t\u00ecm ki\u1ebfm trong vector DB\u2022 B\u01b0\u1edbc 3: L\u1ea5y k\u1ebft qu\u1ea3 v\u00e0 nh\u00e9t v\u00e0o prompt \u0111\u1ec3 AI tr\u1ea3 l\u1eddi N\u1ebfu b\u1ea1n x\u00e0i LangChain ho\u1eb7c LlamaIndex th\u00ec m\u1ea5y b\u01b0\u1edbc n\u00e0y c\u00f3 s\u1eb5n nh\u01b0 block lego, gh\u00e9p l\u00e0 ch\u1ea1y th\u00f4i. T\u1ed5ng k\u1ebft RAG kh\u00f4ng ph\u1ea3i l\u00e0 si\u00eau n\u0103ng l\u1ef1c, nh\u01b0ng l\u00e0 c\u00e1ch c\u1ef1c k\u1ef3 th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u00fap AI:\u2022 Tr\u1ea3 l\u1eddi \u0111\u00fang h\u01a1n, c\u1eadp nh\u1eadt h\u01a1n\u2022 Hi\u1ec3u \u0111\u01b0\u1ee3c \u201cki\u1ebfn th\u1ee9c n\u1ed9i b\u1ed9\u201d\u2022 Tr\u00e1nh n\u00f3i nh\u1ea3m, b\u1ecba chuy\u1ec7n N\u1ebfu b\u1ea1n \u0111ang x\u00e2y AI assistant, chatbot cho c\u00f4ng ty, hay h\u1ec7 th\u1ed1ng h\u1ecfi \u0111\u00e1p \u2013 \u0111\u1eebng b\u1ecf qua RAG. N\u1ebfu b\u1ea1n mu\u1ed1n bi\u1ebft c\u00e1ch implement RAG cho LLM c\u1ee7a m\u00ecnh th\u00ec \u0111\u1ec3 l\u1ea1i comment v\u00e0 m\u00ecnh s\u1ebd l\u00ean b\u00e0i h\u01b0\u1edbng d\u1eabn nh\u00e9! Peace!","og_url":"https:\/\/dangnh.cf\/vi\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/","og_site_name":"Mark's Blog","article_publisher":"https:\/\/www.facebook.com\/dangtute","article_published_time":"2025-06-06T11:11:58+00:00","article_modified_time":"2025-06-06T11:15:39+00:00","og_image":[{"width":1536,"height":1024,"url":"http:\/\/dangnh.cf\/wp-content\/uploads\/2025\/06\/ai-rag.png","type":"image\/png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"admin","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"3 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#article","isPartOf":{"@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/"},"author":{"name":"admin","@id":"https:\/\/dangnh.cf\/#\/schema\/person\/8f3b9db3b250186af217fbeec88eda9c"},"headline":"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i?","datePublished":"2025-06-06T11:11:58+00:00","dateModified":"2025-06-06T11:15:39+00:00","mainEntityOfPage":{"@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/"},"wordCount":864,"commentCount":0,"image":{"@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#primaryimage"},"thumbnailUrl":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/06\/ai-rag.png?fit=1536%2C1024&ssl=1","keywords":["Ai","architecture","RAG"],"articleSection":["AI"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/","url":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/","name":"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i? - Mark's Blog","isPartOf":{"@id":"https:\/\/dangnh.cf\/#website"},"primaryImageOfPage":{"@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#primaryimage"},"image":{"@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#primaryimage"},"thumbnailUrl":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/06\/ai-rag.png?fit=1536%2C1024&ssl=1","datePublished":"2025-06-06T11:11:58+00:00","dateModified":"2025-06-06T11:15:39+00:00","author":{"@id":"https:\/\/dangnh.cf\/#\/schema\/person\/8f3b9db3b250186af217fbeec88eda9c"},"breadcrumb":{"@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#primaryimage","url":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/06\/ai-rag.png?fit=1536%2C1024&ssl=1","contentUrl":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/06\/ai-rag.png?fit=1536%2C1024&ssl=1","width":1536,"height":1024,"caption":"RAG trong AI"},{"@type":"BreadcrumbList","@id":"https:\/\/dangnh.cf\/2025\/06\/06\/rag-la-gi-va-tai-sao-may-ong-ai-cu-nhac-hoai\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/dangnh.cf\/"},{"@type":"ListItem","position":2,"name":"RAG l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao m\u1ea5y \u00f4ng AI c\u1ee9 nh\u1eafc ho\u00e0i?"}]},{"@type":"WebSite","@id":"https:\/\/dangnh.cf\/#website","url":"https:\/\/dangnh.cf\/","name":"Mark's Blog","description":"A blog about Programming and Technical Stuffs","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dangnh.cf\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Person","@id":"https:\/\/dangnh.cf\/#\/schema\/person\/8f3b9db3b250186af217fbeec88eda9c","name":"admin","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/secure.gravatar.com\/avatar\/d838feab6bbd5e774c608b656a29ab0d54981b88fa4b563a83d7635108b6c76e?s=96&d=retro&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/d838feab6bbd5e774c608b656a29ab0d54981b88fa4b563a83d7635108b6c76e?s=96&d=retro&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d838feab6bbd5e774c608b656a29ab0d54981b88fa4b563a83d7635108b6c76e?s=96&d=retro&r=g","caption":"admin"}}]}},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/06\/ai-rag.png?fit=1536%2C1024&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9w3NP-77","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":409,"url":"https:\/\/dangnh.cf\/vi\/2025\/05\/19\/huong-dan-setup-ai-blog-to-podcast-agent\/","url_meta":{"origin":441,"position":0},"title":"H\u01b0\u1edbng D\u1eabn Setup AI Blog to Podcast Agent","author":"admin","date":"Th\u00e1ng 5 19, 2025","format":false,"excerpt":"D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u00e0i vi\u1ebft gi\u1edbi thi\u1ec7u nhanh v\u1ec1 repo Awesome LLM Apps v\u00e0 h\u01b0\u1edbng d\u1eabn ch\u1ea1y th\u1eed \u201cAI Blog to Podcast Agent\u201d tr\u00ean m\u00e1y Mac c\u1ee7a b\u1ea1n. M\u00ecnh s\u1ebd l\u1ea7n l\u01b0\u1ee3t \u0111i qua: Gi\u1edbi thi\u1ec7u chung v\u1ec1 repo T\u1ea1i sao n\u00ean kh\u00e1m ph\u00e1 \u0110i\u1ec3m nh\u1ea5n \u201cAI Blog to Podcast\u2026","rel":"","context":"Trong "AI"","block_context":{"text":"AI","link":"https:\/\/dangnh.cf\/vi\/category\/ai\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/05\/ai-agent.png?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/05\/ai-agent.png?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/05\/ai-agent.png?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/05\/ai-agent.png?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":211,"url":"https:\/\/dangnh.cf\/vi\/2018\/06\/01\/trait-mixin-in-php\/","url_meta":{"origin":441,"position":1},"title":"Trait – Mixin in PHP?","author":"admin","date":"Th\u00e1ng 6 1, 2018","format":false,"excerpt":"Hi guys :) Nh\u01b0 c\u00e1c b\u1ea1n c\u00f3 l\u1ebd \u0111\u00e3 bi\u1ebft, PHP l\u00e0 1 ng\u00f4n ng\u1eef single inheritance, t\u1ee9c l\u00e0 n\u00f3 s\u1ebd c\u00f3 1 s\u1ed1 nh\u01b0\u1ee3c \u0111i\u1ec3m nh\u01b0: M\u1ea5t th\u1eddi gian & c\u00f4ng s\u1ee9c khi t\u00ecm hi\u1ec3u\/ch\u1ea1y h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5: 1 class c\u00f3 10 levels c\u00e1c class cha, th\u00ec v\u1ec1\u2026","rel":"","context":"Trong "PHP"","block_context":{"text":"PHP","link":"https:\/\/dangnh.cf\/vi\/category\/web-development\/php\/"},"img":{"alt_text":"Trait in PHP","src":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2018\/06\/retro-background-3101430_960_720.jpg?fit=960%2C540&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2018\/06\/retro-background-3101430_960_720.jpg?fit=960%2C540&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2018\/06\/retro-background-3101430_960_720.jpg?fit=960%2C540&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2018\/06\/retro-background-3101430_960_720.jpg?fit=960%2C540&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":367,"url":"https:\/\/dangnh.cf\/vi\/2020\/01\/20\/service-container-di-sanh-dieu-voi-laravel\/","url_meta":{"origin":441,"position":2},"title":"Service Container & DI “s\u00e0nh \u0111i\u1ec7u” v\u1edbi Laravel","author":"admin","date":"Th\u00e1ng 1 20, 2020","format":false,"excerpt":"Hi, long time no see :D Laravel l\u00e0 m\u1ed9t framework n\u1ed5i ti\u1ebfng nh\u1ea5t trong c\u1ed9ng \u0111\u1ed3ng PHP, 1 ph\u1ea7n l\u00e0 v\u00ec c\u1ea5u tr\u00fac tuy\u1ec7t v\u1eddi c\u1ee7a n\u00f3. Khi n\u00f3i \u0111\u1ebfn architectural concepts c\u1ee7a Laravel, kh\u00f4ng th\u1ec3 kh\u00f4ng nh\u1eafc t\u1edbi Service Container. Khi b\u1ea1n \u0111\u1ee5ng \u0111\u1ebfn 1 b\u00e0i to\u00e1n l\u1edbn h\u01a1n,\u2026","rel":"","context":"Trong "PHP"","block_context":{"text":"PHP","link":"https:\/\/dangnh.cf\/vi\/category\/web-development\/php\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2020\/01\/1_SstfI6yiEWj1mrnFrLTUdA-e1579505803935.jpeg?fit=900%2C600&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2020\/01\/1_SstfI6yiEWj1mrnFrLTUdA-e1579505803935.jpeg?fit=900%2C600&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2020\/01\/1_SstfI6yiEWj1mrnFrLTUdA-e1579505803935.jpeg?fit=900%2C600&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2020\/01\/1_SstfI6yiEWj1mrnFrLTUdA-e1579505803935.jpeg?fit=900%2C600&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":473,"url":"https:\/\/dangnh.cf\/vi\/2025\/11\/05\/ban-dung-cho-developer\/","url_meta":{"origin":441,"position":3},"title":"Standing desk – V\u1eadt trang tr\u00ed \u0111\u1eaft ti\u1ec1n hay m\u1eb9o hack productivity?","author":"admin","date":"Th\u00e1ng m\u01b0\u1eddi m\u1ed9t 5, 2025","format":false,"excerpt":"Mua c\u00e1i b\u00e0n \u0111\u1ee9ng - standing desk, t\u00f4i t\u01b0\u1edfng m\u00ecnh s\u1ebd th\u00e0nh si\u00eau nh\u00e2n. Ng\u01b0\u1eddi ta qu\u1ea3ng c\u00e1o b\u1ea3o \u0111\u1ee9ng l\u00e0m vi\u1ec7c s\u1ebd t\u1eadp trung h\u01a1n, kh\u1ecfe l\u01b0ng h\u01a1n, code s\u01b0\u1edbng h\u01a1n. C\u00f2n th\u1ef1c t\u1ebf th\u00ec... N\u00f3 th\u00e0nh c\u00e1i c\u1edb ho\u00e0n h\u1ea3o \u0111\u1ec3... kh\u00f4ng ng\u1ed3i y\u00ean. L\u00fac code \u0111\u01b0\u1ee3c, t\u00f4i\u2026","rel":"","context":"Trong \"productivity hack\"","block_context":{"text":"productivity hack","link":"https:\/\/dangnh.cf\/vi\/tag\/productivity-hack\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/11\/image-1.png?fit=800%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/11\/image-1.png?fit=800%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/11\/image-1.png?fit=800%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2025\/11\/image-1.png?fit=800%2C1200&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":124,"url":"https:\/\/dangnh.cf\/vi\/2017\/05\/25\/stdclass-la-gi-lam-the-nao-de-co-properties-dong-trong-php\/","url_meta":{"origin":441,"position":4},"title":"stdClass l\u00e0 g\u00ec? L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 c\u00f3 Dynamic Properties trong PHP?","author":"admin","date":"Th\u00e1ng 5 25, 2017","format":false,"excerpt":"Ch\u00e0o c\u00e1c b\u1ea1n, m\u00ecnh l\u00e0 \u0110\u0103ng, v\u00e0 m\u00ecnh \u0111\u00e3 tr\u1edf l\u1ea1i r\u1ed3i \u0111\u00e2yy\u00a0 N\u1ebfu b\u1ea1n l\u00e0 1 ng\u01b0\u1eddi r\u1ea5t hay t\u00f2 m\u00f2 ngh\u1ecbch ng\u1ee3m, gi\u1ed1ng t\u00f4i, th\u00ec ch\u1eafc h\u1eb3n b\u1ea1n \u0111\u00e3 t\u1eebng lang thang trong core c\u1ee7a m\u1ea5y th\u1eb1ng PHP framework nh\u01b0 Laravel hay Yii, v\u00e0 ch\u1eafc cmn c\u00fa l\u00e0\u2026","rel":"","context":"Trong "PHP"","block_context":{"text":"PHP","link":"https:\/\/dangnh.cf\/vi\/category\/web-development\/php\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2017\/05\/stdclass-trong-php.png?fit=365%2C268&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":66,"url":"https:\/\/dangnh.cf\/vi\/2017\/05\/19\/lam-toan-giai-tri-mot-ti-nhi\/","url_meta":{"origin":441,"position":5},"title":"L\u00e0m to\u00e1n gi\u1ea3i tr\u00ed m\u1ed9t t\u00ed nh\u1ec9?","author":"admin","date":"Th\u00e1ng 5 19, 2017","format":false,"excerpt":"Ok, ch\u00e0o t\u1ea5t c\u1ea3 anh em Ch\u1ea3 l\u00e0 cu\u1ed1i tu\u1ea7n, \u1edf nh\u00e0 r\u1ea3nh rang, tr\u1eddi th\u00ec se se l\u1ea1nh, m\u0169i h\u01a1i t\u1eafc, ch\u1ec9 mu\u1ed1n co ro qu\u1ea5n ch\u0103n \u00f4m laptop cho \u1ea5m. Lang thang thi c\u00e1i cu\u1ed9c thi l\u1eadp tr\u00ecnh c\u1ee7a b\u1ecdn Top Career g\u00ec \u0111\u00f3 :v v\u00f4 t\u00ecnh v\u1ea5p\u2026","rel":"","context":"Trong "PHP"","block_context":{"text":"PHP","link":"https:\/\/dangnh.cf\/vi\/category\/web-development\/php\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2017\/05\/learning_math-e1459355151809.jpg?fit=800%2C513&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2017\/05\/learning_math-e1459355151809.jpg?fit=800%2C513&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2017\/05\/learning_math-e1459355151809.jpg?fit=800%2C513&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2017\/05\/learning_math-e1459355151809.jpg?fit=800%2C513&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/posts\/441","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/comments?post=441"}],"version-history":[{"count":3,"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/posts\/441\/revisions"}],"predecessor-version":[{"id":447,"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/posts\/441\/revisions\/447"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/media\/442"}],"wp:attachment":[{"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/media?parent=441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/categories?post=441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dangnh.cf\/vi\/wp-json\/wp\/v2\/tags?post=441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}