Update services/kb_creation.py

services/kb_creation.py

@@ -1,5 +1,5 @@
 
-# kb_creation.py (single file)
+# kb_creation.py (single file, alpha/beta-ready)
 # ---------------------------------------------------------------
 # Action-aware KB ingestion + hybrid search for SOP documents.
 # Tags each chunk with intent (steps/errors), module (appointments,
@@ -408,7 +408,7 @@ def _meta_overlap(meta: Dict[str, Any], q_terms: List[str]) -> float:
     return inter / max(1, len(q_terms))
 
 
-def hybrid_search_knowledge_base(query: str, top_k: int = 10) -> dict:
+def hybrid_search_knowledge_base(query: str, top_k: int = 10, alpha: float = 0.55, beta: float = 0.45) -> dict:
     norm_q = _normalize_query(query)
     q_terms = _tokenize(norm_q)
     user_actions = _detect_user_action(query)
@@ -461,7 +461,7 @@ def hybrid_search_knowledge_base(query: str, top_k: int = 10) -> dict:
         text = sem_text if sem_text else bm25_text
         meta = sem_meta if sem_meta else bm25_meta
 
-        base = 0.55 * sem_sim + 0.45 * bm25_sim
+        base = alpha * sem_sim + beta * bm25_sim
         overlap = 0.30 * _meta_overlap(meta, q_terms)
 
         doc_mods = [m.strip() for m in (meta.get("module_tags") or "").split(",") if m.strip()]