Digital watermark data tracing method based on attribute importance index

• Main Authors: ZOU YUNFENG, SHAN CHAO, ZHU FENG, XU CHAO, FAN HUANYU
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a digital watermark data tracing method based on an attribute importance index, and the method specifically comprises the following steps: 1, summarizing original data to be distributed, and extracting a prediction attribute and a class label attribute of each piece of original data to form a data table; 2, creating a watermark index table according to a data receiver of the original data, and generating a key KEY; 3, forming a non-important attribute set attr; 4, embedding a watermark to obtain a data set containing the watermark; 5, distributing the data set containing the watermark according to the information of the data receivers in the watermark index table, and collecting suspected leakage data which is completely or partially leaked in the distribution process or after distribution to form a suspected leakage data set; 6, extracting all sub-watermarks in each piece of data in the suspected leakage data set, and connecting the sub-watermarks with complete watermarks; and 7, extr