公开(公告)号：US11841839B1

公开(公告)日：2023-12-12

申请号：US18143059

申请日：2023-05-03

Applicant: ZHEJIANG LAB

Inventor： Jiaxi Yang ,  Chongning Na ,  Ye Yang ,  Kai Ding ,  Yao Yang ,  Yihan Wang

IPC: G06F16/215 ,  G06N3/0475 ,  G06N3/0455

CPC classification number: G06F16/215 ,  G06N3/0455 ,  G06N3/0475

Abstract: The present invention discloses a preprocessing and imputing method for structural data, comprising: step 1, querying the missing information of an original data, counting missing values, and obtaining a missing rate for the original data; step 2, based on the missing rate, performing listwise deletion on the original data, and then traversing the rows to generate corresponding dichotomous arrays, converting the arrays to the form of histogram, calculating the maximum rectangular area formed by the corresponding histogram, and then sorting all rectangular areas to obtain the maximum complete information matrix; step 3, using multiple imputation by chained equations, auto-encoders, or generative adversarial imputation networks to impute missing values on the original data. The present invention can carry out missing information statistics on the original data, automatically search the maximum complete information that meets the conditions, impute the structural data, greatly improve the quality of the original dataset and convenience for subsequent prediction tasks.