Update services/kb_creation.py

services/kb_creation.py

@@ -516,15 +516,25 @@ def _literal_query_match_boost(text: str, query_norm: str) -> float:
 # NEW: weight using metadata action tags overlap
 def _action_meta_weight(meta: Dict[str, Any], user_actions: List[str]) -> float:
     raw = (meta or {}).get("action_tags", "") or ""
-    doc_actions = [a.strip() for a in raw.split(",") if a.strip()] if isinstance(raw, str) else (raw or [])
+    doc_actions = [a.strip().lower() for a in raw.split(",") if a.strip()] if isinstance(raw, str) else (raw or [])
     if not user_actions:
         return 0.0
-    overlap = len(set(user_actions) & set(doc_actions))
-    if overlap == 0:
-        if "update" in user_actions and "create" in doc_actions:
-            return -1.0
-        return -0.3
-    return 0.9 * overlap
+    ua = set(a.lower() for a in user_actions)
+    da = set(doc_actions)
+
+    # Strong preference for overlap
+    overlap = len(ua & da)
+    if overlap > 0:
+        return 1.2 * overlap  # stronger positive
+
+    # Symmetric demotion when clearly conflicting
+    if "update" in ua and "create" in da and "update" not in da:
+        return -1.4
+    if "create" in ua and "update" in da and "create" not in da:
+        return -1.2
+
+    # Mild demotion for no overlap
+    return -0.4
 
 def hybrid_search_knowledge_base(query: str, top_k: int = 10, alpha: float = 0.6, beta: float = 0.4) -> dict:
     norm_query = _normalize_query(query)