Fix ce of ocr. (#1158)

fluid/ocr_recognition/.run.sh

-python ctc_train.py --batch_size=128 --total_step=10000 --eval_period=10000 --log_period=10000 --use_gpu=True

fluid/ocr_recognition/_ce.py

@@ -7,7 +7,7 @@ from kpi import CostKpi, DurationKpi, AccKpi
 
 # NOTE kpi.py should shared in models in some way!!!!
 
-train_cost_kpi = CostKpi('train_cost', 0.02, 0, actived=True)
+train_cost_kpi = CostKpi('train_cost', 0.05, 0, actived=True)
 test_acc_kpi = AccKpi('test_acc', 0.005, 0, actived=True)
 train_duration_kpi = DurationKpi('train_duration', 0.06, 0, actived=True)
 train_acc_kpi = AccKpi('train_acc', 0.005, 0, actived=True)