hee_!J
feat: ์ž๊ฐ€ํ•™์ŠตยทFAISS RAGยท์ •๋Ÿ‰์‹คํ—˜ + ๋ฐฐํฌ ์ค€๋น„
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# D5. Multi-Agent vs Single LLM
๋™์ผ ์•Œ๋žŒ **A3 (CMP Step ์ด์ƒ)** ์— ๋Œ€ํ•ด ๋‘ ๋ฐฉ์‹์„ N=3ํšŒ์”ฉ ์‹คํ–‰ํ•œ ๋น„๊ต ๊ฒฐ๊ณผ์ž…๋‹ˆ๋‹ค.
## ์‹คํ—˜ ์„ค์ •
- ๋ชจ๋ธ: `gpt-5-mini` (์–‘์ชฝ ๋™์ผ, ๊ณต์ •ํ•œ ๋น„๊ต)
- ์•Œ๋žŒ: A3 (CMP Step ์ด์ƒ), lot L20240510-N-08
- Tier 1 (์ด์ƒ ํƒ์ง€): ์ ์ˆ˜ 0.95 / ๊ธฐ์—ฌ ์„ผ์„œ `SLURRY_FLOW_LINE_B/A/C`
- Tier 1 ๊ฒฐ๊ณผ๋Š” ์–‘์ชฝ ๋™์ผ ์ž…๋ ฅ, **Tier 2/3/4๋งŒ ๋น„๊ต**
- Multi-Agent: cause โ†’ impact โ†’ response ์ˆœ์ฐจ ํ˜ธ์ถœ (๊ฐ ์ „๋ฌธํ™”๋œ system prompt + ์ข์€ RAG context)
- Single LLM: ์ „์ฒด ์ง€์‹ ๋ฌธ์„œ + Tier 1์„ ํ•œ ๋ฒˆ์— ์ž…๋ ฅ, Tier 2/3/4 ํ†ตํ•ฉ JSON ์‚ฐ์ถœ
## ์ •๋Ÿ‰ ๋น„๊ต
| ์ง€ํ‘œ | Multi-Agent | Single LLM | ์šฐ์œ„ |
|---|---|---|---|
| ์Šคํ‚ค๋งˆ ๋ถ€ํ•ฉ๋ฅ  | 100% | 100% | ๋™๋“ฑ (์–‘์ชฝ structured output) |
| Citation ์ •ํ™•๋„ | 100% | 100% | ๋™๋“ฑ |
| Latency (avg) | 68.6 s | 26.6 s | **Single (2.6๋ฐฐ ๋น ๋ฆ„)** |
| Cost/run | $0.0176 | $0.0079 | **Single (2.2๋ฐฐ ์ €๋ ด)** |
| Input tokens (avg) | 9,987 | 4,452 | Single |
| Output tokens (avg) | 7,555 | 3,390 | Single |
| ์ฆ‰์‹œ ์กฐ์น˜ ์ˆ˜ (avg) | 9.3๊ฑด | 5.7๊ฑด | **Multi (1.6๋ฐฐ detailed)** |
| ์ค‘์žฅ๊ธฐ ์กฐ์น˜ ์ˆ˜ (avg) | 9.7๊ฑด | 5.0๊ฑด | **Multi (1.9๋ฐฐ detailed)** |
| Yield_loss ฯƒ (์•ˆ์ •์„ฑ) | 1.73 | 0.29 | Single (์ข์€ ๋ถ„์‚ฐ) |
| ์›์ธ ์ผ๊ด€์„ฑ (Jaccard) | 0.00 | 0.00 | ๋™๋“ฑ (N=3 ํ•œ๊ณ„) |
![Latencyยท๋น„์šฉ ๋น„๊ต](plots/cost_latency.png)
## ํ•ด์„
### Single LLM์ด ์šฐ์œ„์ธ ์˜์—ญ
- **์†๋„ยท๋น„์šฉ**: 1ํšŒ ํ˜ธ์ถœ์ด๋ผ latency 2.6๋ฐฐ ๋น ๋ฅด๊ณ  ๋น„์šฉ 2.2๋ฐฐ ์ €๋ ด
- **์ˆ˜์น˜ ์•ˆ์ •์„ฑ**: yield_loss ์ถ”์ •์˜ ํ‘œ์ค€ํŽธ์ฐจ๊ฐ€ ๋” ์ž‘์Œ (ํ•œ ๋ฒˆ์— ์ „์ฒด ๋งฅ๋ฝ์„ ๋ณด๋ฏ€๋กœ ์ผ๊ด€๋œ ์ถ”์ •)
### Multi-Agent๊ฐ€ ์šฐ์œ„์ธ ์˜์—ญ
- **์‘๋‹ต ๊นŠ์ด**: ์ฆ‰์‹œ ์กฐ์น˜ 1.6๋ฐฐ, ์ค‘์žฅ๊ธฐ ์กฐ์น˜ 1.9๋ฐฐ ๋งŽ์€ ๊ถŒ๊ณ  โ€” Tier๋ณ„ ์ „๋ฌธํ™”๋œ prompt๊ฐ€ detailedํ•œ ์ถ”๋ก  ์œ ๋„
- **๋ชจ๋“ˆํ™”**: Tier๋ณ„ ๋…๋ฆฝ ๊ฒ€์ฆยท๊ต์ฒดยท์žฌํ•™์Šต ๊ฐ€๋Šฅ
- **ํ™•์žฅ์„ฑ**: ์ƒˆ step/์‚ฌ์—…๋ถ€ ์ถ”๊ฐ€ ์‹œ ์—์ด์ „ํŠธ ์ถ”๊ฐ€๋งŒ์œผ๋กœ ํ™•์žฅ (Single์€ prompt ํ†ต์งธ ์žฌ์„ค๊ณ„ ํ•„์š”)
- **์ž๊ฐ€ ํ•™์Šต**: ์šด์˜์ž ์Šน์ธ ์‹œ Tier๋ณ„ ์ •๋ฐ€ํ•œ ์ธ์‹œ๋˜ํŠธ ๊ธฐ๋ก (Single์€ ๋ถ„๋ฆฌ๋˜์ง€ ์•Š์€ ํ†ตํ•ฉ ์ถœ๋ ฅ)
### ํ•œ๊ณ„
- N=3๋กœ๋Š” ์›์ธ ์ผ๊ด€์„ฑ(Jaccard) ์˜๋ฏธ ์žˆ๋Š” ์ฐจ์ด ์ธก์ • ์–ด๋ ค์›€ โ€” LLM stochasticity๋กœ ๋งค ํ˜ธ์ถœ๋งˆ๋‹ค ๋‹ค๋ฅธ ์›์ธ ๋„์ถœ๋˜์–ด ๋‘ ๋ฐฉ์‹ ๋ชจ๋‘ 0
- citation/schema๋Š” ์–‘์ชฝ strict JSON mode๋กœ 100%์—ฌ์„œ ๋ณ€๋ณ„๋ ฅ ์—†์Œ
## ๊ฒฐ๋ก 
**Multi-Agent ์ฑ„ํƒ**. ๊ทผ๊ฑฐ:
1. **์šด์˜ ํ™˜๊ฒฝ ์ ํ•ฉ์„ฑ** โ€” ์‹ค fab์—์„œ๋Š” Tier๋ณ„ ์ฑ…์ž„์ž(ํƒ์ง€ํŒ€ยท์›์ธ๋ถ„์„ํŒ€ยท์ˆ˜์œจํŒ€ยท์šด์˜ํŒ€)๊ฐ€ ๋‹ค๋ฆ„. ๋ฉ€ํ‹ฐ ์—์ด์ „ํŠธ์˜ ๋ชจ๋“ˆ ๋ถ„๋ฆฌ๊ฐ€ ์กฐ์ง ๊ตฌ์กฐ์™€ ์ผ์น˜
2. **์ž๊ฐ€ ํ•™์Šต ๋ฃจํ”„** โ€” Tier๋ณ„ ๋ถ„๋ฆฌ ๊ธฐ๋ก์ด ๋‹ค์Œ ๋ถ„์„์˜ ๊ฒ€์ƒ‰ ์ •ํ™•๋„๋ฅผ ๋†’์ด๋Š” ๋ฐ ์ ํ•ฉ
3. **๋น„์šฉ ์ฐจ์ด ๋ฌด์‹œ ๊ฐ€๋Šฅ** โ€” ๋‘ ๋ฐฉ์‹ ๋ชจ๋‘ ์•Œ๋žŒ๋‹น $0.01~0.02๋กœ ์ ˆ๋Œ€๊ฐ’ ๋ฏธ๋ฏธ. ๋Œ€๊ทœ๋ชจ fab ์šด์˜(์ผ ์ˆ˜๋ฐฑ ์•Œ๋žŒ)์—์„œ๋„ ์ผ $10 ๋ฏธ๋งŒ
4. **์‘๋‹ต ๊นŠ์ด ์šฐ์œ„** โ€” ์ฆ‰์‹œยท์ค‘์žฅ๊ธฐ ์กฐ์น˜ ๊ถŒ๊ณ  ์ˆ˜๊ฐ€ 1.6~1.9๋ฐฐ ๋งŽ์•„ ์šด์˜์ž์˜ ์˜์‚ฌ๊ฒฐ์ • ์ž๋ฃŒ ํ’๋ถ€
**Single LLM์ด ๋” ์ ํ•ฉํ•œ ์ผ€์ด์Šค**: ๋‹จ์ˆœ ์š”์•ฝ/๋ถ„๋ฅ˜ ์‘๋‹ต, ๋ชจ๋“ˆ ํ™•์žฅ์ด ํ•„์š” ์—†๋Š” ๋‹จ์ผ ๋„๋ฉ”์ธ.
## ์‹œํ–‰์ฐฉ์˜ค (Lessons Learned)
- ์ดˆ๊ธฐ ํ‘œ๋Š” ํ™”์‚ดํ‘œ(๐Ÿ”ป๐Ÿ”บ) ๊ธฐ๋ฐ˜์ด๋ผ ์˜๋ฏธ ํ•ด์„์ด ํ—ท๊ฐˆ๋ ธ์Œ. "์šฐ์œ„" ํ…์ŠคํŠธ ์ปฌ๋Ÿผ์ด ๋” ๋ช…ํ™•
- N=3๋Š” ์ผ๊ด€์„ฑ ํ‰๊ฐ€์— ๋ถ€์กฑ โ€” ํ–ฅํ›„ N=10+ ๋˜๋Š” ๋™์ผ prompt์— `temperature=0` ์ ์šฉ์œผ๋กœ ์ผ๊ด€์„ฑ ๋ถ„๋ฆฌ ์ธก์ • ํ•„์š”
- ์–‘์ชฝ ๋ชจ๋‘ strict JSON mode ์‚ฌ์šฉํ•ด์„œ schemaยทcitation ์ฐจ์ด๊ฐ€ ์—†์Œ โ€” quality ๋น„๊ต๋ฅผ ์œ„ํ•ด strict ๋„๊ฑฐ๋‚˜ ๋” ๊นŒ๋‹ค๋กœ์šด schema๋กœ ํ‰๊ฐ€ ํ•„์š” (ํ™•์žฅ ์‹คํ—˜)