Patent ID: 11875098
Assignee: HYUNDAI MOTOR COMPANY
Field: Computer technology (Electrical engineering)
Classification: CPC B  G | IPC B  G

Claim 3:
4. The apparatus of claim 1, wherein the preprocessor comprises at least one of:
a missing data processor configured to acquire data missing from the raw data input thereto through linear interpolation;
a negative value processor configured to substitute a negative value among the raw data input thereto with a positive value obtained through linear interpolation;
an outlier processor configured to remove data related to the friction coefficient greater than a predetermined reference value from the raw data input thereto;
an invalid data processor configured to remove data in an invalid period from the raw data input thereto; or
a stabilization data period extractor configured to extract a period that meets a movement standard deviation criterion of the friction coefficient from the raw data input thereto, to secure data in an extracted valid period as data for model training, and to remove data in remaining periods.