Alipay (Hangzhou) Information Technology Co., Ltd.

Xi Jia

Jiawei Liu

Qian Zhang

Yang Liu

Peng Zhang

Desheng Wang

Implementations of the present specification disclose a method, apparatus, device, and a readable medium for identifying private data. A solution includes: obtaining a first length distribution vector and first character distribution statistical information of a first data set, the first data set being a set of private data samples; obtaining a second length distribution vector and second character distribution statistical information of a second data set, the second data set being a set of at least a part of data samples corresponding to a to-be-identified field; calculating a length distribution similarity and a character distribution similarity between the first data set and the second data set, and determining whether data corresponding to the to-be-identified field is private data of a same type as the first data set based on the length distribution similarity and the character distribution similarity.

Method, apparatus, device, and readable medium for identifying private data

Implementations of the present specification disclose a data identification method, apparatus, device, and a computer-readable medium. A solution includes: obtaining a first data set, data samples in the first data set being at least a part of data of a to-be-identified field; obtaining a state transition matrix set generated based on statistics of data samples in a second data set, a data type of the data samples in the second data set being known; determining sample state transition probabilities corresponding to the data samples in the first data set based on the state transition matrix set; determining a ratio between a number of data samples in the first data set whose sample state transition probabilities are greater than a first threshold and a total number of the data samples in the first data set; and determining data corresponding to the to-be-identified field as being of a same data type as the data samples in the second data set in response to that the ratio is greater than a second threshold.

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Zhejiang, China

Xi Jia