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机器学习竞赛实战_优胜解决方案/京东用户购买意向预测/4-模型训练和预测.ipynb

@@ -238,7 +238,7 @@
     }
    ],
    "source": [
-    "data = pd.read_csv('data/train_set.csv')\n",
+    "data = pd.read_csv('data/train_set.csv')  # 读取训练数据\n",
     "data.head()"
    ]
   },
@@ -490,7 +490,7 @@
     }
    ],
    "source": [
-    "data_x = data.loc[:,data.columns != 'label']  # 将数据集分成训练集和预测集\n",
+    "data_x = data.loc[:,data.columns != 'label']  # 将训练数据集分成训练模型和测试集\n",
     "data_y = data.loc[:,data.columns == 'label']\n",
     "data_x.head()"
    ]
@@ -2425,7 +2425,7 @@
     "        pos += 1\n",
     "    else:\n",
     "        neg += 1\n",
-    "all_user_acc = 1.0 * pos / ( pos + neg)\n",
+    "all_user_acc = 1.0 * pos / (pos + neg)\n",
     "all_user_recall = 1.0 * pos / len(all_user_set)\n",
     "print ('所有用户中预测购买用户的准确率为 ' + str(all_user_acc))\n",
     "print ('所有用户中预测购买用户的召回率' + str(all_user_recall))"