diff --git a/ctr/avazu_data_processer.py b/ctr/avazu_data_processer.py
index dd148adc244efc64021446b17488ec7f2b1c9bd9..18aa85330ae765a236416ab1826092c1fe6a133a 100644
--- a/ctr/avazu_data_processer.py
+++ b/ctr/avazu_data_processer.py
@@ -2,6 +2,7 @@ import sys
 import csv
 import cPickle
 import argparse
+import os
 import numpy as np
 
 from utils import logger, TaskMode
diff --git a/ctr/network_conf.py b/ctr/network_conf.py
index b01e4872f108896f60f5d662fe6e1d57295de3f2..f6f4e4a59e17114b279149048c3bf144f2987faa 100644
--- a/ctr/network_conf.py
+++ b/ctr/network_conf.py
@@ -50,7 +50,7 @@ class CTRmodel(object):
 
         self.lr_merged_input = layer.data(
             name='lr_input',
-            type=paddle.data_type.sparse_vector(self.lr_input_dim))
+            type=paddle.data_type.sparse_float_vector(self.lr_input_dim))
 
         if not self.is_infer:
             self.click = paddle.layer.data(