[Boost-users] ublas and matrix expression

From: Russell Hind (rhind_at_[hidden])
Date: 2004-04-08 07:15:17

I have an expression

a = (X^T * X)^-1 * X^T * y

where	x is an n * k matrix
and	y is an n row vector

How do I implement this expression in ublas?  I can create and populate 
the matrices and can do the product of matrices and the transpose use 
prod and trans, but I'm unsure on the ^-1.  Can I do this with ublas?

(I don't know much about matrices, but have been given the above 
expression as a way of finding a polynomial fit for a set of data).

Thanks in advance

Russell