Using formula (14) to constrain the original matrix and adjust it row by row can ensure that the elements in the first row of the original matrix P remain unchanged.
By using formula (14) to constrain the original matrix and adjust it according to the row, the elements in the first row of the original matrix P can be kept unchanged.<br>
Using formula (14) to constrain the original matrix and adjust it according to rows can ensure that the elements in the first row of the original matrix p remain unchanged.