Netinfo Security ›› 2019, Vol. 19 ›› Issue (3): 34-42.doi: 10.3969/j.issn.1671-1122.2019.03.005

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Deep Belief Network Model for Mobile Terminal Identity Authentication

Ziwen SUN1,2(), Yichao ZHANG1   

  1. 1. School of Internet of Things, Jiangnan University, Wuxi Jiangsu 214122, China
    2. Engineering Research Center of Internet of Things Technology Applications, Ministry of Education, Wuxi Jiangsu 214122, China
  • Received:2018-11-29 Online:2019-03-19 Published:2020-05-11

Abstract:

Aiming at the information security problem faced by mobile terminal, a deep belief network model for mobile terminal identity authentication is established. The touch screen sensor is used to collect the user’s original touch gesture data sequence. After the data is pre-processed, the gesture features are extracted and passed into the deep belief network model. The layer-by-layer greedy algorithm is used for unsupervised pre-training, and then the back-propagation algorithm is used to supervise and fine-tune the fixed model parameters. The gesture feature data is used as the model input layer, and the output layer data is obtained after the model is calculated, and the output data is classified and authenticated by the Softmax classifier. Compared with the continuous hidden Markov model and back propagation algorithm, the simulation results show that the deep belief network method can achieve a lower error rate and significantly improve the accuracy of authentication.

Key words: deep belief network model, layer-by-layer greedy algorithm, back propagation algorithm, Softmax classifier

CLC Number: