fix:推荐接口

app/service/recommendation_system/precompute.py

@@ -6,6 +6,7 @@ import logging
 import math
 import pymysql
 import numpy as np
+from datetime import datetime
 from typing import List, Dict, Tuple, Optional
 from collections import defaultdict
 
@@ -25,7 +26,7 @@ logger = logging.getLogger(__name__)
 
 def optimize_database_table():
     """
-    优化 user_preference_log_test 表结构
+    优化 user_preference 表结构
     添加冗余字段和索引
     """
     conn = None
@@ -419,8 +420,8 @@ def compute_user_preference_vector(
             p_i = 1 + math.log(1 + like_count)
             
             # 综合权重
-            # w_i = d_k * p_i
-            w_i = p_i
+            w_i = d_k * p_i
+            # w_i = p_i
 
             vectors.append(feature_vector)
             weights.append(w_i)