Open Science Research Excellence

Xingping Sheng

Publications

1

Publications

1
9544
An Iterative Algorithm to Compute the Generalized Inverse A(2) T,S Under the Restricted Inner Product
Abstract:
Let T and S be a subspace of Cn and Cm, respectively. Then for A ∈ Cm×n satisfied AT ⊕ S = Cm, the generalized inverse A(2) T,S is given by A(2) T,S = (PS⊥APT )†. In this paper, a finite formulae is presented to compute generalized inverse A(2) T,S under the concept of restricted inner product, which defined as < A,B >T,S=< PS⊥APT,B > for the A,B ∈ Cm×n. By this iterative method, when taken the initial matrix X0 = PTA∗PS⊥, the generalized inverse A(2) T,S can be obtained within at most mn iteration steps in absence of roundoff errors. Finally given numerical example is shown that the iterative formulae is quite efficient.
Keywords:
Generalized inverse A(2) T,S, Restricted inner product, Iterative method, Orthogonal projection.