Fix in dbn.py
Fix in dbn.py

nitishsrivastava/deepnet,rickyHong/deepnet,luukhoavn/deepnet,rickyHong/deepnet,hendrikTpl/deepnet,DeercoderResearch/deepnet,DeercoderResearch/deepnet,abdulqayyum/deepnet,hendrikTpl/deepnet,nitishsrivastava/deepnet,nitishsrivastava/deepnet,nitishsrivastava/deepnet,DeercoderResearch/deepnet,7404N/deepnet,abdulqayyum/deepnet,7404N/deepnet,luukhoavn/deepnet,luukhoavn/deepnet,DeercoderResearch/deepnet,7404N/deepnet,abdulqayyum/deepnet,hendrikTpl/deepnet,rickyHong/deepnet,luukhoavn/deepnet,rickyHong/deepnet,abdulqayyum/deepnet,hendrikTpl/deepnet,7404N/deepnet