diff --git a/function.py b/function.py
index a4fc19b..db11a6f 100644
--- a/function.py
+++ b/function.py
@@ -83,18 +83,7 @@ def load_data(filepath):
         for line in f:
             line = line.strip().split()
             if len(line) >= 1 and line[-1].isdigit():
-                line_data = []
-                for x in line[:-1]:
-                    if x == '?':
-                        # 用均值填充缺失值
-                        data_array = np.array(data)
-                        if len(data_array) > 0:
-                            column_mean = np.nanmean(data_array[:, len(line_data)], axis=0)
-                            line_data.append(column_mean)
-                        else:
-                            line_data.append(0)
-                    else:
-                        line_data.append(float(x))
+                line_data = [0 if x == '?' else float(x) for x in line[:-1]]
                 data.append(line_data)
                 labels.append(int(line[-1]))