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検索設計から 推論設計への重心移動と Recall-First Retrieval
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po3rin
April 28, 2026
Programming
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検索設計から 推論設計への重心移動と Recall-First Retrieval
po3rin
April 28, 2026
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Transcript
ݕࡧઃܭ͔Β ਪઃܭͷॏ৺Ҡಈͱ 3FDBMM'JSTU3FUSJFWBM
)JSPNV/BLBNVSB )JSPNV /BLBNVSB QPSJO "*.-0QT&OHJOFFS *OUFSFTUJOHJO *OGPSNBUJPO3FUSJFWBM /BHPZB6OJW .
*OD -BZFS9*OD (SBEVBUF4DIPPMPG4DJFODF "*ɾ.-5FBN.-0QT%BUB&OHJOFFSJOH "*69.-0QT5FDI-FFE "*69.-0QT5FDI-FFE d
1 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM TODAY'S THESIS RAG ͷ࣭վળͷॏ৺ɺ ʮݕࡧઃܭʯ͔Β ʮਪઃܭʯҠΓͭͭ͋Δɻ ͦͷసͷഎܠɾख๏ɾͦͯ͠ Recall-First
Retrieval ͱ͍͏ઃܭࢥΛཧ͠·͢ɻ
2 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
ݕࡧઃܭͷຽओԽͱɺͦͷนɻ ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
3 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM RAGͷ ࣮ඪ४Խ͞Εͨɻ CHAPTER 1 · DEMOCRATIZATION
4 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM ͔͠͠ݕࡧͷνϡʔχϯάऴΘΒͳ͍ɻ CHAPTER 1 · THE WALLS
ݕࡧઃܭ͔Βɺਪઃܭ ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
6 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM • LLM ͕ेڧ͚Εɺݕࡧଆ͕ᘳͰͳͯ͘࠷ऴճ ͷ࣭อͨΕΔɻ • BM25 ͷΑ͏ͳݹయతΩʔϫʔυݕࡧͰɺจॻηο τ͕ἧ͑
LLM ͕ิ͢Δɻ • hybrid + rerank ͷΑ͏ʹݕࡧଆΛް͘͢Δඅ༻ରޮՌ LLM ͕ڧ͘ͳΔ΄ͲബΕΔɻ Keyword Search Is All You Need CHAPTER 2 · EVIDENCE ڧྗͳ LLM Λલఏʹ͢ΕɺBM25 ʴ LLM ͚ͩͰ hybrid + rerank ʹඖఢ͢Δ࣭͕ग़Δ͜ͱΛ࣮ূ [1]ɻ
7 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM CHAPTER 3 · CONDITIONS ॏ৺͕ಈ͘3ͭͷ݅ɻ
8 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM CHAPTER 3 · The Bitter Lesson RICH SUTTON
· 2019 ʮظతʹɺ൚༻తͳܭࢉΛ εέʔϧͤ͞Δํ๏͕ɺ ਓ͕ؒखͰΈࠐΜͩࣝΛӽ͑Δɻʯ The Bitter Lesson [2]
ਪઃܭͷͭͷख๏ɻ ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
9 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
10 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
11 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
12 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM • Recall-FirstͰͱ͖ͬͯͨυΩϡϝϯτΛਫ਼ಡ͢ΔͨΊͷίϯϙʔωϯτͱͯ͠ར༻͢Δ ࠷ۙLLM WikiͳͲNavigateϕʔεͷख๏ͷఏҊ͕૿͖͑ͯͨ
3FDBMM'JSTU3FUSJFWBM ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
13 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
14 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM TRADE-OFFS ͨͩ͠ɺ ۜͷؙͰͳ͍ɻ
1 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM
16 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM ͱ͍͏Λٕज़ॻయͰॻ͖·ͨ͠ https://techbookfest.org/product/jbe1zdnjqbb6cHwebRhapn?productVariantID=3VefBkLxtiAHJr1vAHjJMY
17 ݕࡧઃܭ͔Βਪઃܭͷॏ৺Ҡಈͱ3FDBMM'JSTU3FUSJFWBM References 1. Keyword Search Is All You Need
(AmazonͷݚڀνʔϜʹΑΔൃද) 1. URL: https://www.amazon.science/publications/keyword-search-is-all-you-need-achieving-rag-level-performance-without-vector-databases- using-agentic-tool-use 2. Bitter Lesson 1. http://incompleteideas.net/IncIdeas/BitterLesson.html 3. Search-o1 (Agentic Searchͷදతͳ࣮) 1. arXiv: https://arxiv.org/abs/2501.05366 4. SPD-RAG (Sub-agent Per Document RAG) 1. arXiv: https://arxiv.org/abs/2603.08329 5. PageIndex (Vectorless RAGͷ۩ମతͳ࣮) 1. URL: https://pageindex.ai/ 6. SRLM (Self-Re fl ective Program Search) 1. arXiv: https://arxiv.org/abs/2603.15653
ݕࡧઃܭ͔Β ਪઃܭͷॏ৺Ҡಈͱ 3FDBMM'JSTU3FUSJFWBM