merge: origin/main (search Phase 1.2-C) → design-system

- 백엔드 search/chunk 개선 (Phase 1.2-AB → 1.2-C) 통합
- frontend와 충돌 없음 (backend만 변경)
- Phase C/D/F/E 프런트엔드 작업 유지
This commit is contained in:
Hyungi Ahn
2026-04-08 12:52:59 +09:00
10 changed files with 765 additions and 61 deletions

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@@ -85,6 +85,25 @@ class AIClient:
# TODO: Qwen2.5-VL-7B 비전 모델 호출 구현
raise NotImplementedError("OCR는 Phase 1에서 구현")
async def rerank(self, query: str, texts: list[str]) -> list[dict]:
"""TEI bge-reranker-v2-m3 호출 (Phase 1.3).
TEI POST /rerank API:
request: {"query": str, "texts": [str, ...]}
response: [{"index": int, "score": float}, ...] (정렬됨)
timeout은 self.ai.rerank.timeout (config.yaml).
호출자(rerank_service)가 asyncio.Semaphore + try/except로 감쌈.
"""
timeout = float(self.ai.rerank.timeout) if self.ai.rerank.timeout else 5.0
response = await self._http.post(
self.ai.rerank.endpoint,
json={"query": query, "texts": texts},
timeout=timeout,
)
response.raise_for_status()
return response.json()
async def _call_chat(self, model_config, prompt: str) -> str:
"""OpenAI 호환 API 호출 + 자동 폴백"""
try:

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@@ -16,10 +16,17 @@ from core.database import get_session
from core.utils import setup_logger
from models.user import User
from services.search.fusion_service import DEFAULT_FUSION, get_strategy, normalize_display_scores
from services.search.retrieval_service import search_text, search_vector
from services.search.rerank_service import (
MAX_CHUNKS_PER_DOC,
MAX_RERANK_INPUT,
apply_diversity,
rerank_chunks,
)
from services.search.retrieval_service import compress_chunks_to_docs, search_text, search_vector
from services.search_telemetry import (
compute_confidence,
compute_confidence_hybrid,
compute_confidence_reranked,
record_search_event,
)
@@ -30,7 +37,14 @@ router = APIRouter()
class SearchResult(BaseModel):
id: int
"""검색 결과 단일 행.
Phase 1.2-C: chunk-level vector retrieval 도입으로 chunk 메타 필드 추가.
text 검색 결과는 chunk_id 등이 None (doc-level).
vector 검색 결과는 chunk_id 등이 채워짐 (chunk-level).
"""
id: int # doc_id (text/vector 공통)
title: str | None
ai_domain: str | None
ai_summary: str | None
@@ -38,6 +52,10 @@ class SearchResult(BaseModel):
score: float
snippet: str | None
match_reason: str | None = None
# Phase 1.2-C: chunk 메타 (vector 검색 시 채워짐)
chunk_id: int | None = None
chunk_index: int | None = None
section_title: str | None = None
# ─── Phase 0.4: 디버그 응답 스키마 ─────────────────────────
@@ -93,22 +111,30 @@ async def search(
pattern="^(legacy|rrf|rrf_boost)$",
description="hybrid 모드 fusion 전략 (legacy=기존 가중합, rrf=RRF k=60, rrf_boost=RRF+강한신호 boost)",
),
rerank: bool = Query(
True,
description="bge-reranker-v2-m3 활성화 (Phase 1.3, hybrid 모드만 동작)",
),
debug: bool = Query(False, description="단계별 candidates + timing 응답에 포함"),
):
"""문서 검색 — FTS + ILIKE + 벡터 결합 (Phase 0.5: RRF fusion)"""
timing: dict[str, float] = {}
notes: list[str] = []
text_results: list[SearchResult] = []
vector_results: list[SearchResult] = []
vector_results: list[SearchResult] = [] # doc-level (압축 후, fusion 입력)
raw_chunks: list[SearchResult] = [] # chunk-level (raw, Phase 1.3 reranker용)
chunks_by_doc: dict[int, list[SearchResult]] = {} # Phase 1.3 reranker용 보존
t_total = time.perf_counter()
if mode == "vector":
t0 = time.perf_counter()
vector_results = await search_vector(session, q, limit)
raw_chunks = await search_vector(session, q, limit)
timing["vector_ms"] = (time.perf_counter() - t0) * 1000
if not vector_results:
if not raw_chunks:
notes.append("vector_search_returned_empty (AI client error or no embeddings)")
# vector 단독 모드도 doc 압축해서 다양성 확보 (chunk 중복 방지)
vector_results, chunks_by_doc = compress_chunks_to_docs(raw_chunks, limit)
results = vector_results
else:
t0 = time.perf_counter()
@@ -117,16 +143,57 @@ async def search(
if mode == "hybrid":
t1 = time.perf_counter()
vector_results = await search_vector(session, q, limit)
raw_chunks = await search_vector(session, q, limit)
timing["vector_ms"] = (time.perf_counter() - t1) * 1000
# chunk-level → doc-level 압축 (raw chunks는 chunks_by_doc에 보존)
t1b = time.perf_counter()
vector_results, chunks_by_doc = compress_chunks_to_docs(raw_chunks, limit)
timing["compress_ms"] = (time.perf_counter() - t1b) * 1000
if not vector_results:
notes.append("vector_search_returned_empty — text-only fallback")
t2 = time.perf_counter()
strategy = get_strategy(fusion)
results = strategy.fuse(text_results, vector_results, q, limit)
# fusion은 doc 기준 — 더 넓게 가져옴 (rerank 후보용)
fusion_limit = max(limit * 5, 100) if rerank else limit
fused_docs = strategy.fuse(text_results, vector_results, q, fusion_limit)
timing["fusion_ms"] = (time.perf_counter() - t2) * 1000
notes.append(f"fusion={strategy.name}")
notes.append(
f"chunks raw={len(raw_chunks)} compressed={len(vector_results)} "
f"unique_docs={len(chunks_by_doc)}"
)
if rerank:
# Phase 1.3: reranker — chunk 기준 입력
# fusion 결과 doc_id로 chunks_by_doc에서 raw chunks 회수
t3 = time.perf_counter()
rerank_input: list[SearchResult] = []
for doc in fused_docs:
chunks = chunks_by_doc.get(doc.id, [])
if chunks:
# doc당 max 2 chunk (latency/VRAM 보호)
rerank_input.extend(chunks[:MAX_CHUNKS_PER_DOC])
else:
# text-only 매치 doc → doc 자체를 chunk처럼 wrap
rerank_input.append(doc)
if len(rerank_input) >= MAX_RERANK_INPUT:
break
rerank_input = rerank_input[:MAX_RERANK_INPUT]
notes.append(f"rerank input={len(rerank_input)}")
reranked = await rerank_chunks(q, rerank_input, limit * 3)
timing["rerank_ms"] = (time.perf_counter() - t3) * 1000
# diversity (chunk → doc 압축, max_per_doc=2, top score>0.90 unlimited)
t4 = time.perf_counter()
results = apply_diversity(reranked, max_per_doc=MAX_CHUNKS_PER_DOC)[:limit]
timing["diversity_ms"] = (time.perf_counter() - t4) * 1000
else:
# rerank 비활성: fused_docs를 그대로 (limit 적용)
results = fused_docs[:limit]
else:
results = text_results
@@ -137,8 +204,12 @@ async def search(
timing["total_ms"] = (time.perf_counter() - t_total) * 1000
# confidence는 fusion 적용 전 raw 신호로 계산 (Phase 0.5 이후 fused score는 절대값 의미 없음)
# rerank 활성 시 reranker score가 가장 신뢰할 수 있는 신호 → 우선 사용
if mode == "hybrid":
confidence_signal = compute_confidence_hybrid(text_results, vector_results)
if rerank and "rerank_ms" in timing:
confidence_signal = compute_confidence_reranked(results)
else:
confidence_signal = compute_confidence_hybrid(text_results, vector_results)
elif mode == "vector":
confidence_signal = compute_confidence(vector_results, "vector")
else:

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@@ -1,5 +1,199 @@
"""Reranker 서비스 — bge-reranker-v2-m3 통합 (Phase 1.3).
TEI 컨테이너 호출 + asyncio.Semaphore(2) + soft timeout fallback.
구현은 Phase 1.3에서 채움.
데이터 흐름 원칙:
- fusion = doc 기준 / reranker = chunk 기준 — 절대 섞지 말 것
- raw chunks를 끝까지 보존, fusion은 압축본만 사용
- reranker는 chunks_by_doc dict에서 raw chunks 회수해서 chunk 단위로 호출
- diversity는 reranker 직후 마지막 단계에서만 적용
snippet 생성:
- 200~400 토큰(800~1500자) 기준
- query keyword 위치 중심 ±target_chars/2 윈도우
- keyword 매치 없으면 첫 target_chars 문자 fallback (성능 손실 방지)
"""
from __future__ import annotations
import asyncio
import re
from typing import TYPE_CHECKING
import httpx
from ai.client import AIClient
from core.utils import setup_logger
if TYPE_CHECKING:
from api.search import SearchResult
logger = setup_logger("rerank")
# 동시 rerank 호출 제한 (GPU saturation 방지)
RERANK_SEMAPHORE = asyncio.Semaphore(2)
# rerank input 크기 제한 (latency / VRAM hard cap)
MAX_RERANK_INPUT = 200
MAX_CHUNKS_PER_DOC = 2
# Soft timeout (초)
RERANK_TIMEOUT = 5.0
def _extract_window(text: str, query: str, target_chars: int = 800) -> str:
"""query keyword 위치 중심으로 ±target_chars/2 윈도우 추출.
fallback: keyword 매치 없으면 첫 target_chars 문자 그대로.
이게 없으면 reranker가 무관한 텍스트만 보고 점수 매겨 성능 급락.
"""
keywords = [k for k in re.split(r"\s+", query) if len(k) >= 2]
best_pos = -1
for kw in keywords:
pos = text.lower().find(kw.lower())
if pos >= 0:
best_pos = pos
break
if best_pos < 0:
# Fallback: 첫 target_chars 문자
return text[:target_chars]
half = target_chars // 2
start = max(0, best_pos - half)
end = min(len(text), start + target_chars)
return text[start:end]
def _make_snippet(c: "SearchResult", query: str, max_chars: int = 1500) -> str:
"""Reranker input snippet — title + query 중심 본문 윈도우.
feedback_search_phase1_implementation.md 3번 항목 강제:
snippet 200~400 토큰(800~1500자), full document 절대 안 됨.
"""
title = c.title or ""
text = c.snippet or ""
# snippet은 chunk text 앞 200자 또는 doc text 앞 200자
# 더 긴 chunk text가 필요하면 호출자가 따로 채워서 넘김
if len(text) > max_chars:
text = _extract_window(text, query, target_chars=max_chars - 100)
return f"{title}\n\n{text}"
def _wrap_doc_as_chunk(doc: "SearchResult") -> "SearchResult":
"""text-only 매치 doc(chunks_by_doc에 없는 doc)을 ChunkResult 형태로 변환.
Phase 1.3 reranker 입력에 doc 자체가 들어가야 하는 경우.
snippet은 documents.extracted_text 앞 200자 (이미 SearchResult.snippet에 채워짐).
chunk_id 등은 None 그대로.
"""
return doc
async def rerank_chunks(
query: str,
candidates: list["SearchResult"],
limit: int,
) -> list["SearchResult"]:
"""RRF 결과 candidates를 bge-reranker로 재정렬.
Args:
query: 사용자 쿼리
candidates: chunk-level SearchResult 리스트 (이미 chunks_by_doc에서 회수)
limit: 반환할 결과 수
Returns:
reranked SearchResult 리스트 (rerank score로 score 필드 업데이트)
Fallback (timeout/HTTPError): RRF 순서 그대로 candidates[:limit] 반환.
"""
if not candidates:
return []
# input 크기 제한 (latency/VRAM hard cap)
if len(candidates) > MAX_RERANK_INPUT:
logger.warning(
f"rerank input {len(candidates)} > MAX {MAX_RERANK_INPUT}, 자름"
)
candidates = candidates[:MAX_RERANK_INPUT]
snippets = [_make_snippet(c, query) for c in candidates]
client = AIClient()
try:
async with asyncio.timeout(RERANK_TIMEOUT):
async with RERANK_SEMAPHORE:
results = await client.rerank(query, snippets)
# results: [{"index": int, "score": float}, ...] (이미 정렬됨)
reranked: list["SearchResult"] = []
for r in results:
idx = r.get("index")
sc = r.get("score")
if idx is None or sc is None or idx >= len(candidates):
continue
chunk = candidates[idx]
chunk.score = float(sc)
chunk.match_reason = (chunk.match_reason or "") + "+rerank"
reranked.append(chunk)
return reranked[:limit]
except (asyncio.TimeoutError, httpx.HTTPError) as e:
logger.warning(f"rerank failed → RRF fallback: {type(e).__name__}: {e}")
return candidates[:limit]
except Exception as e:
logger.warning(f"rerank unexpected error → RRF fallback: {type(e).__name__}: {e}")
return candidates[:limit]
finally:
await client.close()
async def warmup_reranker() -> bool:
"""TEI 부팅 후 모델 로딩 완료 대기 (10회 retry).
TEI는 health 200을 빠르게 반환하지만 첫 모델 로딩(10~30초) 전에는
rerank 요청이 실패하거나 매우 느림. FastAPI startup 또는 첫 요청 전 호출.
"""
client = AIClient()
try:
for attempt in range(10):
try:
await client.rerank("warmup", ["dummy text for model load"])
logger.info(f"reranker warmup OK (attempt {attempt + 1})")
return True
except Exception as e:
logger.info(f"reranker warmup retry {attempt + 1}: {e}")
await asyncio.sleep(3)
logger.error("reranker warmup failed after 10 attempts")
return False
finally:
await client.close()
def apply_diversity(
results: list["SearchResult"],
max_per_doc: int = MAX_CHUNKS_PER_DOC,
top_score_threshold: float = 0.90,
) -> list["SearchResult"]:
"""chunk-level 결과를 doc 기준으로 압축 (max_per_doc).
조건부 완화: 가장 상위 결과 score가 threshold 이상이면 unlimited
(high confidence relevance > diversity).
"""
if not results:
return []
# 가장 상위 score가 threshold 이상이면 diversity 제약 해제
top_score = results[0].score if results else 0.0
if top_score >= top_score_threshold:
return results
seen: dict[int, int] = {}
out: list["SearchResult"] = []
for r in results:
doc_id = r.id
if seen.get(doc_id, 0) >= max_per_doc:
continue
out.append(r)
seen[doc_id] = seen.get(doc_id, 0) + 1
return out

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@@ -1,11 +1,11 @@
"""검색 후보 수집 서비스 (Phase 1.1).
"""검색 후보 수집 서비스 (Phase 1.2).
text(documents FTS + 키워드) + vector(documents.embedding) 후보를
text(documents FTS + trigram) + vector(documents.embedding → chunks) 후보를
SearchResult 리스트로 반환.
Phase 1.1: search.py의 _search_text/_search_vector를 이전.
Phase 1.1 후속 substep: ILIKE → trigram `similarity()` + `gin_trgm_ops`.
Phase 1.2: vector retrieval을 document_chunks 테이블 기반으로 전환.
Phase 1.1a: search.py의 _search_text/_search_vector를 이전 (ILIKE 그대로).
Phase 1.2-B: ILIKE → trigram `%` + `similarity()`. ILIKE 풀 스캔 제거.
Phase 1.2-B 이후: vector retrieval을 document_chunks 테이블 기반으로 전환.
"""
from __future__ import annotations
@@ -24,52 +24,92 @@ if TYPE_CHECKING:
async def search_text(
session: AsyncSession, query: str, limit: int
) -> list["SearchResult"]:
"""FTS + ILIKE 필드별 가중치 검색.
"""FTS + trigram 필드별 가중치 검색 (Phase 1.2-B UNION 분해).
Phase 1.2-B 진단:
OR로 묶은 단일 SELECT는 PostgreSQL planner가 OR 결합 인덱스를 못 만들고
Seq Scan을 선택 (small table 765 docs). EXPLAIN으로 측정 시 525ms.
→ CTE + UNION으로 분해하면 각 branch가 자기 인덱스 활용 → 26ms (95% 감소).
구조:
candidates CTE
├─ title % → idx_documents_title_trgm
├─ ai_summary % → idx_documents_ai_summary_trgm
│ (length > 0 partial index 매치 조건 포함)
└─ FTS @@ plainto_tsquery → idx_documents_fts_full
JOIN documents d ON d.id = c.id
ORDER BY 5컬럼 similarity 가중 합산 + ts_rank * 2.0
가중치: title 3.0 / ai_tags 2.5 / user_note 2.0 / ai_summary 1.5 / extracted_text 1.0
+ ts_rank * 2.0 보너스.
threshold:
pg_trgm.similarity_threshold default = 0.3
→ multi-token 한국어 뉴스 쿼리(예: "이란 미국 전쟁 글로벌 반응")에서
candidates를 못 모음 → recall 감소 (0.788 → 0.750)
→ set_limit(0.15)으로 낮춰 recall 회복. precision은 ORDER BY similarity 합산이 보정.
"""
from api.search import SearchResult # 순환 import 회피
# trigram threshold를 0.15로 낮춰 multi-token query recall 회복
# SQLAlchemy async session 내 두 execute는 같은 connection 사용
await session.execute(text("SELECT set_limit(0.15)"))
result = await session.execute(
text("""
SELECT id, title, ai_domain, ai_summary, file_format,
left(extracted_text, 200) AS snippet,
WITH candidates AS (
-- title trigram (idx_documents_title_trgm)
SELECT id FROM documents
WHERE deleted_at IS NULL AND title % :q
UNION
-- ai_summary trigram (idx_documents_ai_summary_trgm 부분 인덱스 매치)
SELECT id FROM documents
WHERE deleted_at IS NULL
AND ai_summary IS NOT NULL
AND length(ai_summary) > 0
AND ai_summary % :q
UNION
-- FTS 통합 인덱스 (idx_documents_fts_full)
SELECT id FROM documents
WHERE deleted_at IS NULL
AND to_tsvector('simple',
coalesce(title, '') || ' ' ||
coalesce(ai_tags::text, '') || ' ' ||
coalesce(ai_summary, '') || ' ' ||
coalesce(user_note, '') || ' ' ||
coalesce(extracted_text, '')
) @@ plainto_tsquery('simple', :q)
)
SELECT d.id, d.title, d.ai_domain, d.ai_summary, d.file_format,
left(d.extracted_text, 200) AS snippet,
(
-- title 매칭 (가중치 최고)
CASE WHEN coalesce(title, '') ILIKE '%%' || :q || '%%' THEN 3.0 ELSE 0 END
-- ai_tags 매칭 (가중치 높음)
+ CASE WHEN coalesce(ai_tags::text, '') ILIKE '%%' || :q || '%%' THEN 2.5 ELSE 0 END
-- user_note 매칭 (가중치 높음)
+ CASE WHEN coalesce(user_note, '') ILIKE '%%' || :q || '%%' THEN 2.0 ELSE 0 END
-- ai_summary 매칭 (가중치 중상)
+ CASE WHEN coalesce(ai_summary, '') ILIKE '%%' || :q || '%%' THEN 1.5 ELSE 0 END
-- extracted_text 매칭 (가중치 중간)
+ CASE WHEN coalesce(extracted_text, '') ILIKE '%%' || :q || '%%' THEN 1.0 ELSE 0 END
-- FTS 점수 (보너스)
-- 컬럼별 trigram similarity 가중 합산
similarity(coalesce(d.title, ''), :q) * 3.0
+ similarity(coalesce(d.ai_tags::text, ''), :q) * 2.5
+ similarity(coalesce(d.user_note, ''), :q) * 2.0
+ similarity(coalesce(d.ai_summary, ''), :q) * 1.5
+ similarity(coalesce(d.extracted_text, ''), :q) * 1.0
-- FTS 보너스 (idx_documents_fts_full 활용)
+ coalesce(ts_rank(
to_tsvector('simple', coalesce(title, '') || ' ' || coalesce(extracted_text, '')),
to_tsvector('simple',
coalesce(d.title, '') || ' ' ||
coalesce(d.ai_tags::text, '') || ' ' ||
coalesce(d.ai_summary, '') || ' ' ||
coalesce(d.user_note, '') || ' ' ||
coalesce(d.extracted_text, '')
),
plainto_tsquery('simple', :q)
), 0) * 2.0
) AS score,
-- match reason
-- match_reason: similarity 가장 큰 컬럼 또는 FTS
CASE
WHEN coalesce(title, '') ILIKE '%%' || :q || '%%' THEN 'title'
WHEN coalesce(ai_tags::text, '') ILIKE '%%' || :q || '%%' THEN 'tags'
WHEN coalesce(user_note, '') ILIKE '%%' || :q || '%%' THEN 'note'
WHEN coalesce(ai_summary, '') ILIKE '%%' || :q || '%%' THEN 'summary'
WHEN coalesce(extracted_text, '') ILIKE '%%' || :q || '%%' THEN 'content'
WHEN similarity(coalesce(d.title, ''), :q) >= 0.3 THEN 'title'
WHEN similarity(coalesce(d.ai_tags::text, ''), :q) >= 0.3 THEN 'tags'
WHEN similarity(coalesce(d.user_note, ''), :q) >= 0.3 THEN 'note'
WHEN similarity(coalesce(d.ai_summary, ''), :q) >= 0.3 THEN 'summary'
WHEN similarity(coalesce(d.extracted_text, ''), :q) >= 0.3 THEN 'content'
ELSE 'fts'
END AS match_reason
FROM documents
WHERE deleted_at IS NULL
AND (coalesce(title, '') ILIKE '%%' || :q || '%%'
OR coalesce(ai_tags::text, '') ILIKE '%%' || :q || '%%'
OR coalesce(user_note, '') ILIKE '%%' || :q || '%%'
OR coalesce(ai_summary, '') ILIKE '%%' || :q || '%%'
OR coalesce(extracted_text, '') ILIKE '%%' || :q || '%%'
OR to_tsvector('simple', coalesce(title, '') || ' ' || coalesce(extracted_text, ''))
@@ plainto_tsquery('simple', :q))
FROM documents d
JOIN candidates c ON d.id = c.id
ORDER BY score DESC
LIMIT :limit
"""),
@@ -81,10 +121,24 @@ async def search_text(
async def search_vector(
session: AsyncSession, query: str, limit: int
) -> list["SearchResult"]:
"""벡터 유사도 검색 (코사인 거리).
"""벡터 유사도 검색 — chunk-level + doc 다양성 보장 (Phase 1.2-C).
Phase 1.2에서 document_chunks 테이블 기반으로 전환 예정.
현재는 documents.embedding 사용.
Phase 1.2-C 진단:
단순 chunk top-N 가져오면 같은 doc의 여러 chunks가 상위에 몰려
unique doc 다양성 붕괴 → recall 0.788 → 0.531 (catastrophic).
해결 (사용자 추천 C 방식):
Window function으로 doc_id 기준 PARTITION → 각 doc의 top 2 chunks만 반환.
raw_chunks(chunks_by_doc 보존)와 doc-level 압축 둘 다 만족.
SQL 흐름:
1. inner CTE: ivfflat 인덱스로 top-K chunks 빠르게 추출
2. ranked CTE: doc_id PARTITION 후 score 내림차순 ROW_NUMBER
3. outer: rn <= 2 (doc당 max 2 chunks) + JOIN documents
Returns:
list[SearchResult] — chunk-level, 각 doc 최대 2개. compress_chunks_to_docs로
doc-level 압축 + chunks_by_doc 보존.
"""
from api.search import SearchResult # 순환 import 회피
@@ -95,17 +149,83 @@ async def search_vector(
except Exception:
return []
# ivfflat 인덱스로 top-K chunks 추출 후 doc 단위 partition
# inner_k = limit * 10 정도로 충분 unique doc 확보 (~30~50 docs)
inner_k = max(limit * 10, 200)
result = await session.execute(
text("""
SELECT id, title, ai_domain, ai_summary, file_format,
(1 - (embedding <=> cast(:embedding AS vector))) AS score,
left(extracted_text, 200) AS snippet,
'vector' AS match_reason
FROM documents
WHERE embedding IS NOT NULL AND deleted_at IS NULL
ORDER BY embedding <=> cast(:embedding AS vector)
WITH topk AS (
SELECT
c.id AS chunk_id,
c.doc_id,
c.chunk_index,
c.section_title,
c.text,
c.embedding <=> cast(:embedding AS vector) AS dist
FROM document_chunks c
WHERE c.embedding IS NOT NULL
ORDER BY c.embedding <=> cast(:embedding AS vector)
LIMIT :inner_k
),
ranked AS (
SELECT
chunk_id, doc_id, chunk_index, section_title, text, dist,
ROW_NUMBER() OVER (PARTITION BY doc_id ORDER BY dist ASC) AS rn
FROM topk
)
SELECT
d.id AS id,
d.title AS title,
d.ai_domain AS ai_domain,
d.ai_summary AS ai_summary,
d.file_format AS file_format,
(1 - r.dist) AS score,
left(r.text, 200) AS snippet,
'vector' AS match_reason,
r.chunk_id AS chunk_id,
r.chunk_index AS chunk_index,
r.section_title AS section_title
FROM ranked r
JOIN documents d ON d.id = r.doc_id
WHERE r.rn <= 2 AND d.deleted_at IS NULL
ORDER BY r.dist
LIMIT :limit
"""),
{"embedding": str(query_embedding), "limit": limit},
{"embedding": str(query_embedding), "inner_k": inner_k, "limit": limit * 4},
)
return [SearchResult(**row._mapping) for row in result]
def compress_chunks_to_docs(
chunks: list["SearchResult"], limit: int
) -> tuple[list["SearchResult"], dict[int, list["SearchResult"]]]:
"""chunk-level 결과를 doc-level로 압축하면서 raw chunks를 보존.
fusion은 doc 기준이어야 하지만(같은 doc 중복 방지), Phase 1.3 reranker는
chunk 기준 raw 데이터가 필요함. 따라서 압축본과 raw를 동시 반환.
압축 규칙:
- doc_id 별로 가장 score 높은 chunk만 doc_results에 추가
- 같은 doc의 다른 chunks는 chunks_by_doc dict에 보존 (Phase 1.3 reranker용)
- score 내림차순 정렬 후 limit개만 doc_results
Returns:
(doc_results, chunks_by_doc)
- doc_results: list[SearchResult] — doc당 best chunk score, fusion 입력
- chunks_by_doc: dict[doc_id, list[SearchResult]] — 모든 raw chunks 보존
"""
if not chunks:
return [], {}
chunks_by_doc: dict[int, list["SearchResult"]] = {}
best_per_doc: dict[int, "SearchResult"] = {}
for chunk in chunks:
chunks_by_doc.setdefault(chunk.id, []).append(chunk)
prev_best = best_per_doc.get(chunk.id)
if prev_best is None or chunk.score > prev_best.score:
best_per_doc[chunk.id] = chunk
# doc 단위 best score 정렬, 상위 limit개
doc_results = sorted(best_per_doc.values(), key=lambda r: r.score, reverse=True)
return doc_results[:limit], chunks_by_doc

View File

@@ -149,6 +149,33 @@ def _cosine_to_confidence(cosine: float) -> float:
return 0.10
def compute_confidence_reranked(reranked_results: list[Any]) -> float:
"""Phase 1.3 reranker score 기반 confidence.
bge-reranker-v2-m3는 sigmoid score (0~1 범위)를 반환.
rerank 활성 시 fusion score보다 reranker score가 가장 신뢰할 수 있는 신호.
임계값(초안, 실측 후 조정 가능):
>= 0.95 → high
>= 0.80 → med-high
>= 0.60 → med
>= 0.40 → low-med
else → low
"""
if not reranked_results:
return 0.0
top_score = float(getattr(reranked_results[0], "score", 0.0) or 0.0)
if top_score >= 0.95:
return 0.95
if top_score >= 0.80:
return 0.80
if top_score >= 0.60:
return 0.65
if top_score >= 0.40:
return 0.50
return 0.35
def compute_confidence_hybrid(
text_results: list[Any],
vector_results: list[Any],

View File

@@ -79,11 +79,20 @@ def _classify_chunk_strategy(doc: Document) -> str:
# ─── Chunking 전략 ───
def _chunk_legal(text: str) -> list[dict]:
"""법령: 제N조 단위로 분할 (상위 조문 컨텍스트 보존)"""
"""법령: 제N조 단위로 분할 (상위 조문 컨텍스트 보존).
영어/외국 법령(ai_domain Foreign_Law 등)은 "제N조" 패턴이 없어 split 결과가
1개 element만 나옴 → 서문 chunk 1개만 생성되고 본문 대부분이 손실되는 버그.
조문 패턴 미검출 시 sliding window fallback으로 처리.
"""
# "제 1 조", "제1조", "제 1 조(제목)" 등 매칭
pattern = re.compile(r"(제\s*\d+\s*조(?:의\s*\d+)?(?:\([^)]*\))?)")
parts = pattern.split(text)
# 조문 패턴 미검출 (영어/외국 법령 등) → sliding window fallback
if len(parts) <= 1:
return _chunk_sliding(text, DEFAULT_WINDOW_CHARS, DEFAULT_OVERLAP_CHARS, "section")
chunks = []
# parts[0] = 조 이전 서문, parts[1], parts[2] = (마커, 본문) pairs
if parts[0].strip() and len(parts[0]) >= MIN_CHUNK_CHARS:

View File

@@ -0,0 +1,47 @@
-- Phase 1.2: documents 테이블 FTS 확장 + trigram 인덱스
--
-- 목적:
-- 1) FTS 인덱스를 title + ai_tags + ai_summary + user_note + extracted_text 통합 범위로 확장
-- 현재 retrieval_service.search_text의 SQL 안 to_tsvector(...)는 인덱스 없이 동작.
-- 2) trigram 인덱스로 ILIKE 풀스캔(text_ms 470ms)을 similarity() + GIN 인덱스로 대체.
--
-- 데이터 규모 (2026-04-07 측정): documents 765 / 평균 본문 8.5KB / 총 6.5MB
-- 인덱스 빌드 시간 추산: 5~30초 (CONCURRENTLY 불필요, 짧은 lock 수용 가능)
--
-- Phase 1.2-A 단독 적용. 1.2-B에서 retrieval_service.search_text의 SQL을
-- ILIKE → similarity() + `%` 연산자로 전환하면서 이 인덱스들을 활용.
-- pg_trgm extension (014에서 이미 활성화, IF NOT EXISTS로 안전)
CREATE EXTENSION IF NOT EXISTS pg_trgm;
-- ─── 1) 통합 FTS 인덱스 ────────────────────────────────────
-- title + ai_tags(JSONB→text) + ai_summary + user_note + extracted_text를 한 번에 토큰화.
-- retrieval_service.search_text의 ts_rank 호출이 이 인덱스를 사용하도록 SQL 갱신 예정.
CREATE INDEX IF NOT EXISTS idx_documents_fts_full ON documents
USING GIN (
to_tsvector('simple',
coalesce(title, '') || ' ' ||
coalesce(ai_tags::text, '') || ' ' ||
coalesce(ai_summary, '') || ' ' ||
coalesce(user_note, '') || ' ' ||
coalesce(extracted_text, '')
)
);
-- ─── 2) title trigram 인덱스 ───────────────────────────────
-- 가장 자주 매칭되는 컬럼. similarity(title, query) > threshold + ORDER BY로 사용.
CREATE INDEX IF NOT EXISTS idx_documents_title_trgm ON documents
USING GIN (title gin_trgm_ops);
-- ─── 3) extracted_text trigram 인덱스 ──────────────────────
-- ILIKE의 dominant cost를 trigram GIN 인덱스로 대체.
-- WHERE 절로 NULL/빈 본문 제외해 인덱스 크기 절감.
CREATE INDEX IF NOT EXISTS idx_documents_extracted_text_trgm ON documents
USING GIN (extracted_text gin_trgm_ops)
WHERE extracted_text IS NOT NULL AND length(extracted_text) > 0;
-- ─── 4) ai_summary trigram 인덱스 ──────────────────────────
-- summary는 짧지만 의미 매칭에 자주 활용 (가중치 1.5).
CREATE INDEX IF NOT EXISTS idx_documents_ai_summary_trgm ON documents
USING GIN (ai_summary gin_trgm_ops)
WHERE ai_summary IS NOT NULL AND length(ai_summary) > 0;

View File

View File

@@ -0,0 +1,204 @@
"""문서 chunk 재인덱싱 (Phase 1.2-E).
전체 documents를 chunk_worker로 재처리. 야간 배치 권장 (00:00~06:00).
핵심 요건 (사용자 정의):
- concurrency 제한 (asyncio.Semaphore) — Ollama 부하 조절
- checkpoint resume (중간 실패/중단 대비)
- rate limiting (Ollama API 보호)
- 진행 로그 ([REINDEX] N/total (P%) ETA: ...)
사용:
cd /home/hyungi/Documents/code/hyungi_Document_Server
PYTHONPATH=app .venv/bin/python tests/scripts/reindex_all_chunks.py \\
--concurrency 3 \\
--checkpoint checkpoints/reindex.json \\
> logs/reindex.log 2>&1 &
dry-run (5개만):
PYTHONPATH=app .venv/bin/python tests/scripts/reindex_all_chunks.py --limit 5
기존 chunks 보유 doc 건너뛰기:
PYTHONPATH=app .venv/bin/python tests/scripts/reindex_all_chunks.py --skip-existing
기존 chunks 강제 재처리 (chunk_worker가 자동으로 delete + insert):
PYTHONPATH=app .venv/bin/python tests/scripts/reindex_all_chunks.py
"""
import argparse
import asyncio
import json
import sys
import time
from pathlib import Path
# PYTHONPATH=app 가정
sys.path.insert(0, str(Path(__file__).resolve().parent.parent.parent / "app"))
from sqlalchemy import select # noqa: E402
from sqlalchemy.ext.asyncio import async_sessionmaker # noqa: E402
from core.database import engine # noqa: E402
from core.utils import setup_logger # noqa: E402
from models.chunk import DocumentChunk # noqa: E402
from models.document import Document # noqa: E402
from workers.chunk_worker import process # noqa: E402
logger = setup_logger("reindex")
def load_checkpoint(path: Path) -> set[int]:
"""checkpoint 파일에서 처리 완료 doc_id 집합 복원."""
if not path.exists():
return set()
try:
data = json.loads(path.read_text())
return set(data.get("processed", []))
except (json.JSONDecodeError, KeyError) as e:
logger.warning(f"checkpoint {path} invalid ({e}) → 새로 시작")
return set()
def save_checkpoint(path: Path, processed: set[int]) -> None:
"""처리 완료 doc_id를 checkpoint 파일에 저장 (incremental)."""
path.parent.mkdir(parents=True, exist_ok=True)
tmp = path.with_suffix(path.suffix + ".tmp")
tmp.write_text(json.dumps({"processed": sorted(processed)}, indent=2))
tmp.replace(path) # atomic swap
def format_eta(elapsed: float, done: int, total: int) -> str:
"""남은 작업 시간 ETA 포맷."""
if done == 0:
return "?"
rate = done / elapsed
remaining = (total - done) / rate
if remaining < 60:
return f"{remaining:.0f}s"
if remaining < 3600:
return f"{remaining / 60:.0f}m"
return f"{remaining / 3600:.1f}h"
async def main():
parser = argparse.ArgumentParser(description="문서 chunk 재인덱싱 (Phase 1.2-E)")
parser.add_argument(
"--concurrency",
type=int,
default=3,
help="동시 처리 doc 수 (default 3, Ollama bge-m3 부하 조절)",
)
parser.add_argument(
"--checkpoint",
type=Path,
default=Path("checkpoints/reindex.json"),
help="checkpoint 파일 경로 (resume 가능)",
)
parser.add_argument(
"--rate-limit",
type=float,
default=0.1,
help="작업 간 sleep (초, Ollama 보호)",
)
parser.add_argument(
"--limit",
type=int,
default=None,
help="처리할 doc 수 제한 (dry-run 용)",
)
parser.add_argument(
"--skip-existing",
action="store_true",
help="이미 chunks 있는 doc skip (재처리 생략)",
)
args = parser.parse_args()
Session = async_sessionmaker(engine)
# 1. 대상 docs 수집
async with Session() as session:
query = (
select(Document.id)
.where(
Document.deleted_at.is_(None),
Document.extracted_text.is_not(None),
)
.order_by(Document.id)
)
result = await session.execute(query)
all_doc_ids = [row[0] for row in result]
if args.skip_existing:
existing_query = select(DocumentChunk.doc_id).distinct()
existing_result = await session.execute(existing_query)
existing = {row[0] for row in existing_result}
logger.info(f"skip-existing: 기존 chunks 보유 doc {len(existing)}")
else:
existing = set()
# 2. checkpoint resume
processed = load_checkpoint(args.checkpoint)
if processed:
logger.info(f"checkpoint: 이미 처리됨 {len(processed)}건 (resume)")
# 3. 처리 대상 = 전체 - skip_existing - checkpoint
targets = [d for d in all_doc_ids if d not in processed and d not in existing]
if args.limit:
targets = targets[: args.limit]
total = len(targets)
logger.info(
f"REINDEX 시작: 전체 {len(all_doc_ids)} docs / 처리 대상 {total} docs"
f" / concurrency={args.concurrency} rate_limit={args.rate_limit}s"
)
if total == 0:
logger.info("처리할 doc 없음. 종료.")
return
semaphore = asyncio.Semaphore(args.concurrency)
done_count = 0
fail_count = 0
start_time = time.monotonic()
log_interval = max(1, total // 50) # ~2% 단위 진행 로그
async def process_one(doc_id: int) -> None:
nonlocal done_count, fail_count
async with semaphore:
try:
async with Session() as session:
await process(doc_id, session)
await session.commit()
# rate limit (Ollama 보호)
await asyncio.sleep(args.rate_limit)
done_count += 1
processed.add(doc_id)
# 진행 로그 + 체크포인트 저장
if done_count % log_interval == 0 or done_count == total:
elapsed = time.monotonic() - start_time
pct = (done_count / total) * 100
eta = format_eta(elapsed, done_count, total)
logger.info(
f"[REINDEX] {done_count}/{total} ({pct:.1f}%)"
f" ETA: {eta} elapsed: {elapsed:.0f}s fails: {fail_count}"
)
save_checkpoint(args.checkpoint, processed)
except Exception as e:
fail_count += 1
logger.warning(
f"[REINDEX] doc {doc_id} 실패: {type(e).__name__}: {e}"
)
tasks = [process_one(doc_id) for doc_id in targets]
await asyncio.gather(*tasks)
elapsed = time.monotonic() - start_time
save_checkpoint(args.checkpoint, processed)
logger.info(
f"[REINDEX] 완료: {done_count}/{total} done, {fail_count} fails, {elapsed:.0f}s"
)
if __name__ == "__main__":
asyncio.run(main())

View File

@@ -133,6 +133,7 @@ async def call_search(
mode: str = "hybrid",
limit: int = 20,
fusion: str | None = None,
rerank: str | None = None,
) -> tuple[list[int], float]:
"""검색 API 호출 → (doc_ids, latency_ms)."""
url = f"{base_url.rstrip('/')}/api/search/"
@@ -140,6 +141,8 @@ async def call_search(
params: dict[str, str | int] = {"q": query, "mode": mode, "limit": limit}
if fusion:
params["fusion"] = fusion
if rerank is not None:
params["rerank"] = rerank
import time
@@ -165,6 +168,7 @@ async def evaluate(
label: str,
mode: str = "hybrid",
fusion: str | None = None,
rerank: str | None = None,
) -> list[QueryResult]:
"""전체 쿼리셋 평가."""
results: list[QueryResult] = []
@@ -173,7 +177,7 @@ async def evaluate(
for q in queries:
try:
returned_ids, latency_ms = await call_search(
client, base_url, token, q.query, mode=mode, fusion=fusion
client, base_url, token, q.query, mode=mode, fusion=fusion, rerank=rerank
)
results.append(
QueryResult(
@@ -404,6 +408,13 @@ def main() -> int:
choices=["legacy", "rrf", "rrf_boost"],
help="hybrid 모드 fusion 전략 (Phase 0.5+, 미지정 시 서버 기본값)",
)
parser.add_argument(
"--rerank",
type=str,
default=None,
choices=["true", "false"],
help="bge-reranker-v2-m3 활성화 (Phase 1.3+, 미지정 시 서버 기본값=true)",
)
parser.add_argument(
"--token",
type=str,
@@ -434,6 +445,8 @@ def main() -> int:
print(f"Mode: {args.mode}", end="")
if args.fusion:
print(f" / fusion: {args.fusion}", end="")
if args.rerank:
print(f" / rerank: {args.rerank}", end="")
print()
all_results: list[QueryResult] = []
@@ -441,21 +454,21 @@ def main() -> int:
if args.base_url:
print(f"\n>>> evaluating: {args.base_url}")
results = asyncio.run(
evaluate(queries, args.base_url, args.token, "single", mode=args.mode, fusion=args.fusion)
evaluate(queries, args.base_url, args.token, "single", mode=args.mode, fusion=args.fusion, rerank=args.rerank)
)
print_summary("single", results)
all_results.extend(results)
else:
print(f"\n>>> baseline: {args.baseline_url}")
baseline_results = asyncio.run(
evaluate(queries, args.baseline_url, args.token, "baseline", mode=args.mode, fusion=args.fusion)
evaluate(queries, args.baseline_url, args.token, "baseline", mode=args.mode, fusion=args.fusion, rerank=args.rerank)
)
baseline_summary = print_summary("baseline", baseline_results)
print(f"\n>>> candidate: {args.candidate_url}")
candidate_results = asyncio.run(
evaluate(
queries, args.candidate_url, args.token, "candidate", mode=args.mode, fusion=args.fusion
queries, args.candidate_url, args.token, "candidate", mode=args.mode, fusion=args.fusion, rerank=args.rerank
)
)
candidate_summary = print_summary("candidate", candidate_results)