Improved Qrginv Algorithm for Computing Moore-Penrose Inverse Matrices

Table 6

Error and computational time results for lotkin (rank = 19, cond = 3.8210𝑒+021).

Method	Time	‖𝐴𝐴^†𝐴−𝐴‖2	‖𝐴^†𝐴𝐴^†−𝐴^†‖2	‖(𝐴𝐴^†)^𝑇−(𝐴𝐴^†)‖2	‖(𝐴^†𝐴)^𝑇−(𝐴^†𝐴)‖2
qrginv	0.0244	8.2512𝑒−006	1.2717𝑒−011	4.4898𝑒−002	3.9689𝑒−009
IMqrginv	0.0102	8.2512𝑒−006	3.2435𝑒−009	4.4898𝑒−002	1.2636𝑒−011