Hyungi Ahn
431d4fe010
야간 수집 뉴스 (KST 00:00~05:00) topic×country 비교 분석 1페이지 카드.
Phase 4 Global Digest 와 코드/로직/테이블 분리, 알고리즘만 services/clustering_common 공유.
Backend 신규:
- migrations/255_morning_briefings.sql: morning_briefings + briefing_topics
(briefing_date UNIQUE, UNIQUE(briefing_id,topic_rank), FK CASCADE,
historical_* 3컬럼 nullable, cluster_members JSONB, country_perspectives
JSONB, status 4-state success|partial|failed|empty)
- app/models/briefing.py: SQLAlchemy ORM
- app/services/briefing/loader.py: KST 5h 윈도우 + news_sources prefix
fallback (Phase 4 패턴 미러) + historical candidate pool 로더
- app/services/briefing/clustering.py: cluster_global topic-first
(LAMBDA=ln(2)/2h, MIN_COUNTRIES_PER_TOPIC=2, MAX_TOPICS=7)
- app/services/briefing/comparator.py: call_primary 26B + JSON envelope
sanitize (cap perspectives 10 / divergences 3 / convergences 2 /
quotes 5) + fallback row 고정 형태 + retrieve_historical cosine top-K
- app/services/briefing/pipeline.py: load→cluster→select(K=7,λ=0.6)
→historical→compare→status 4-state→delete+insert transaction
- app/workers/briefing_worker.py: APScheduler/수동 호출 공용 진입점,
600s hard cap
- app/prompts/briefing_comparative.txt: 한국어 비교 분석 JSON 프롬프트,
{articles_block} + {historical_block} 2섹션, 인용 금지 라벨
- app/api/briefing.py: GET /latest, GET ?date=, POST /regenerate?date=
(admin, sync delete+insert tx, regenerated:true)
Backend 수정:
- app/main.py: briefing_router 등록 (/api/briefing prefix). scheduler
등록은 PR-3 에서.
- app/services/digest/selection.py: select_for_llm 매개변수화 (K, λ
caller 주입). Phase 4 동작은 default 값으로 보존.
Historical 정책:
- BRIEFING_HISTORICAL_ENABLED env flag, default off.
- flag off → historical_* 컬럼 모두 NULL, prompt {historical_block} 빈
라벨, retrieval 호출 안 함.
- flag on (PR-1b 에서 enable) → cluster centroid 와 과거 30일 doc
embedding cosine top-K 5 (sim≥0.70), prompt 에 주입.
Country canonical (실측 확인 후):
- documents.country 컬럼 부재 확정
- document_chunks.country 매칭률 0% (chunks 자체가 뉴스에 안 만들어짐)
- 유일 country 신호 = news_sources prefix 매핑 (Phase 4 와 동일)
Tests:
- tests/test_briefing_historical.py: 3 경로 회귀 (flag off/on with
fixture/on zero match) + sanitize cap + fallback row 형태.
Verification: PR-1.8 에서 GPU 컨테이너 pytest + 수동 regenerate.