Deep learning differential privacy protection method

A differential privacy and deep learning technology, applied in the field of information system security, can solve problems such as parameter shocks, and achieve the effects of improving usability, improving practical significance, and high data availability

Pending Publication Date: 2020-10-02
ANHUI UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

However, the DCGAN used in this method still has insufficient training stability. As the number of training increases, some parameters (such as filter) will oscillate due to collapse, and the generation model of DCGAN will be limited by batch normalization.
In addition, the group setting method of privacy parameters in this method mainly depends on the individual needs of users, and there is no qualitative analysis of privacy loss minimization for feedback-adjusted privacy parameter settings

Method used

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  • Deep learning differential privacy protection method
  • Deep learning differential privacy protection method
  • Deep learning differential privacy protection method

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Experimental program
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Effect test

Embodiment 1

[0051] to combine figure 1 , a deep learning differential privacy protection method of the present embodiment, the steps of which are:

[0052] Step 1. Construct a convolutional neural network with two convolutional layers and three fully connected layers, introduce differential privacy theory into network parameter optimization, and add Gaussian noise that satisfies the Gaussian mechanism. The specific process is as follows:

[0053] Initialize, establish a convolutional neural network with two convolutional layers and three fully connected layers, and initialize the model parameters of the convolutional neural network, such as image 3 shown. Introduce (ε,δ)-differential privacy as shown in formula (1):

[0054] Pr[M(D)∈S M ]≤e ε ×Pr[M(D’)∈S M ]+δ (1)

[0055] Among them, M is a given random algorithm; D and D' are neighbor data sets with a difference of at most one record; S M are all possible outputs of random algorithm M on data sets D and D'. The degree of privac...

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Abstract

The invention discloses a deep learning differential privacy protection method, and belongs to the technical field of information system security. The invention provides a novel deep learning differential privacy protection model. A WGAN is adopted to generate an image result for the data subjected to model privacy protection processing; a result closest to a real image is selected from the generated images, the similarity between the generated result and the original image is compared, a difference value is calculated for threshold comparison, privacy parameters in the model gradient are fedback and adjusted under the similarity threshold limiting condition, and therefore a certain promotion effect is provided for application of differential privacy in the fields of deep learning and thelike.

Description

technical field [0001] The invention belongs to the technical field of information system security, and more specifically relates to a deep learning differential privacy protection method. Background technique [0002] The existing privacy protection methods for relatively common data sets, such as using k-anonymity to anonymize data, etc., are difficult to provide strict privacy guarantees after the actual processing effect. As a new type of privacy protection technology with great advantages, Differential privacy (DR) technology is a privacy protection method based on data distortion proposed for attackers with strong knowledge background, by adding noise to ensure Inserting or deleting any record in the data set does not affect the query output results, so as to achieve the purpose of protecting data privacy. This technology is based on a rigorous mathematical foundation and provides a quantitative evaluation method. It is one of the most effective and highly applicable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06N3/04G06N3/08G06K9/62
CPCG06F21/6245G06N3/084G06N3/044G06N3/045G06F18/24
Inventor 陶陶柏建树郑啸刘恒王爱国
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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