{"id":441,"date":"2025-06-06T19:11:58","date_gmt":"2025-06-06T11:11:58","guid":{"rendered":"https:\/\/dangnh.cf\/?p=441"},"modified":"2026-09-10T17:17:26","modified_gmt":"2026-09-10T09:17:26","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. Mu\u1ed1n xem RAG ch\u1ea1y trong m\u1ed9t project th\u1eadt, m\u00ecnh c\u00f3 b\u00e0i h\u01b0\u1edbng d\u1eabn setup AI Blog to Podcast Agent<\/a>; c\u00f2n n\u1ebfu b\u1ea1n \u0111\u1ecbnh cho agent quy\u1ec1n ghi v\u00e0o h\u1ec7 th\u1ed1ng th\u1eadt th\u00ec \u0111\u1ecdc th\u00eam b\u00e0i v\u1ec1 idempotency key cho AI agent<\/a>. 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 (Retrieval-Augmented Generation) l\u00e0 c\u00e1ch gi\u00fap AI b\u1edbt “n\u00f3i x\u1ea1o” b\u1eb1ng vi\u1ec7c tra t\u00e0i li\u1ec7u tr\u01b0\u1edbc khi tr\u1ea3 l\u1eddi. Gi\u1ea3i th\u00edch d\u1ec5 hi\u1ec3u, k\u00e8m v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 c\u00e1c b\u01b0\u1edbc tri\u1ec3n khai.<\/p>","protected":false},"author":1,"featured_media":442,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_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},"jetpack_post_was_ever_published":false},"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? Gi\u1ea3i th\u00edch Retrieval-Augmented Generation<\/title>\n<meta name=\"description\" content=\"RAG (Retrieval-Augmented Generation) l\u00e0 g\u00ec, ho\u1ea1t \u0111\u1ed9ng ra sao v\u00e0 khi n\u00e0o n\u00ean d\u00f9ng? Gi\u1ea3i th\u00edch d\u1ec5 hi\u1ec3u k\u00e8m v\u00ed d\u1ee5 chatbot v\u00e0 c\u00e1c b\u01b0\u1edbc x\u00e2y vector database.\" \/>\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? Gi\u1ea3i th\u00edch Retrieval-Augmented Generation\" \/>\n<meta property=\"og:description\" content=\"RAG (Retrieval-Augmented Generation) l\u00e0 g\u00ec, ho\u1ea1t \u0111\u1ed9ng ra sao v\u00e0 khi n\u00e0o n\u00ean d\u00f9ng? 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