how to random initialize svd function in matlab??

i want the svd function in matlab to give me two different values for the same matrix , i mean the U and V , currently im getting the same everytime i run 

Answer 1

[Christine Tobler]

The linear algebra functions in MATLAB are run-to-run reproducible, meaning if you call them twice with the exact same input, you get the exact same output.

If you want to randomize the output, you could pre-multiply the matrix with two random orthogonal matrices, and then apply does matrices to the outputs U and V:

[m, n] = size(A);
U0 = orth(randn(m));
V0 = orth(randn(n));
[U, S, V] = svd(U0*A*V0');
U = U0'*U;
V = V0'*V;
norm(A - U*S*V', 'fro')

This will still return the same singular values (which are unique), but returns different singular vectors.

Answer 2

[KALYAN ACHARJYA]

data_test=magic(3);
[U,S,V]=svd(data_test)

Result

U =
   -0.5774    0.7071    0.4082
   -0.5774    0.0000   -0.8165
   -0.5774   -0.7071    0.4082
S =
   15.0000         0         0
         0    6.9282         0
         0         0    3.4641
V =
   -0.5774    0.4082    0.7071
   -0.5774   -0.8165   -0.0000
   -0.5774    0.4082   -0.7071

>> 

[Fethi Bencherki]

i might have formulated the question in a wrong manner , see normally svd is non unique , but due to some reason svd(A) is outputing the same results , i want it instead to give me different U, V everytime i run , for the same matrix A ofcourse