Complementation method and device for supply chain data missing

The embodiment of the invention provides a complementation method for supply chain data missing, and the method comprises the steps: obtaining a column value similarity matrix and a column name similarity matrix through pairwise calculation of column value similarity and column name similarity for each data column in a plurality of data tables; and fusing the column value similarity matrix and the column name similarity matrix to obtain an overall similarity matrix, and determining each associated column set for the plurality of data tables based on the overall similarity matrix. And finally, for any data table containing the missing value, a corresponding target data table is constructed based on each associated column set, the target data table comprises a data row and a data column similar to the row and the column where the missing value is located, and the missing value is complemented based on the content in the target data table, so that the missing value is obtained. Therefore, the accuracy and the wo