... Sons, Inc.ISBNs: 0-4 7 1-3 925 4-5 (Hardback); 0-4 7 1-2 663 8-8 (Electronic)A procedure for implementing UD decomposition is presented in Table 6.4. Thisalgorithm is implemented in the m-®le modchol:m. ... for Least-Squares Problems. These techniqueswere originally developed for solving least-squares problems. The overdeterminedsystemAx bcan be solved ef®ciently and relatively accurately by ... upper triangular matrix (U is overwritten with UÀ1)for i=m :-1 :1,for j=m :-1 :i+1,U(i,j)=-U(i,j);for k=i+1:j-1,U(i,j)=U(i,j)-U(i,k)*U(k,j);end;end;end;Computational complexity: mm À1m...