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Beyond RAG for Agent Memory: Retrieval by Decoupling and Aggregation

์ž‘์„ฑ์ž
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์นดํ…Œ๊ณ ๋ฆฌ
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Zhanghao Hu, Qinglin Zhu, Runcong Zhao, Di Liang, Hanqi Yan, Yulan He, Lin Gui

๐Ÿ’ก ๊ฐœ์š”

๊ธฐ์กด RAG ๋ฐฉ์‹์€ ์—์ด์ „ํŠธ ๋ฉ”๋ชจ๋ฆฌ์˜ ํŠน์„ฑ์— ๋ถ€์ ํ•ฉํ•˜์—ฌ ์ค‘๋ณต๋œ ์ •๋ณด๋‚˜ ์ค‘์š”ํ•œ ์„ธ๋ถ€ ์‚ฌํ•ญ์ด ๋ˆ„๋ฝ๋˜๋Š” ๋ฌธ์ œ๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ์—์ด์ „ํŠธ ๋ฉ”๋ชจ๋ฆฌ์˜ '๋ถ„๋ฆฌ ํ›„ ํ†ตํ•ฉ' ์›์น™์— ๊ธฐ๋ฐ˜ํ•œ xMemory๋ผ๋Š” ์ƒˆ๋กœ์šด ๋ฉ”๋ชจ๋ฆฌ ์‹œ์Šคํ…œ์„ ์ œ์•ˆํ•ฉ๋‹ˆ๋‹ค. xMemory๋Š” ์ƒํ˜ธ์ž‘์šฉ ๊ธฐ๋ก์„ ๊ณ„์ธต์ ์œผ๋กœ ๊ตฌ์กฐํ™”ํ•˜์—ฌ ํšจ์œจ์ ์ธ ๊ฒ€์ƒ‰์„ ๊ฐ€๋Šฅํ•˜๊ฒŒ ํ•˜๋ฉฐ, ์ด๋ฅผ ํ†ตํ•ด ๋‹ต๋ณ€ ํ’ˆ์งˆ๊ณผ ์ถ”๋ก  ํšจ์œจ์„ฑ์„ ํ–ฅ์ƒ์‹œํ‚ต๋‹ˆ๋‹ค.

๐Ÿ”‘ ์‹œ์‚ฌ์  ๋ฐ ํ•œ๊ณ„

โ€ข
์—์ด์ „ํŠธ ๋ฉ”๋ชจ๋ฆฌ์—์„œ ์ค‘๋ณต์„ ์ œ๊ฑฐํ•˜๊ณ  ์ค‘์š”ํ•œ ์ •๋ณด๋ฅผ ๋ณด์กดํ•˜๋Š” ๋ฐ ํšจ๊ณผ์ ์ธ ์ƒˆ๋กœ์šด ๊ณ„์ธต์  ๋ฉ”๋ชจ๋ฆฌ ๊ตฌ์กฐ๋ฅผ ์ œ์‹œํ•ฉ๋‹ˆ๋‹ค.
โ€ข
์งˆ๋ฌธ์˜ ๋ถˆํ™•์‹ค์„ฑ์„ ์ค„์ด๋Š” ๋ฐฉํ–ฅ์œผ๋กœ ๊ฒ€์ƒ‰ ๋ฒ”์œ„๋ฅผ ์ ์ง„์ ์œผ๋กœ ํ™•์žฅํ•˜๋Š” top-down ๊ฒ€์ƒ‰ ๋ฐฉ์‹์„ ํ†ตํ•ด ์ถ”๋ก  ํšจ์œจ์„ฑ์„ ๋†’์ž…๋‹ˆ๋‹ค.
โ€ข
๋‹ค์–‘ํ•œ LLM ํ™˜๊ฒฝ์—์„œ ์‹คํ—˜์„ ํ†ตํ•ด ์„ฑ๋Šฅ ํ–ฅ์ƒ์„ ์ž…์ฆํ•˜์˜€์œผ๋ฉฐ, ํŠนํžˆ LoCoMo ๋ฐ PerLTQA ๋ฐ์ดํ„ฐ์…‹์—์„œ ๊ธ์ •์ ์ธ ๊ฒฐ๊ณผ๋ฅผ ๋ณด์˜€์Šต๋‹ˆ๋‹ค.
โ€ข
๊ณ„์ธต์  ๋ฉ”๋ชจ๋ฆฌ ๊ตฌ์กฐ๋ฅผ ๊ตฌ์ถ•ํ•˜๊ณ  ์œ ์ง€ํ•˜๋Š” ๋ฐ ์ถ”๊ฐ€์ ์ธ ๊ณ„์‚ฐ ๋น„์šฉ์ด ๋ฐœ์ƒํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ๋‹ค์–‘ํ•œ ์—์ด์ „ํŠธ ์ž‘์—… ์‹œ๋‚˜๋ฆฌ์˜ค์— ๋Œ€ํ•œ ์ผ๋ฐ˜ํ™” ๊ฐ€๋Šฅ์„ฑ์— ๋Œ€ํ•œ ์ถ”๊ฐ€ ์—ฐ๊ตฌ๊ฐ€ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
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