Matrix inverse is almost never a good idea. The same effect can usually be had using a decomposition at far less cost. For instance, for solving a linear system, QR decomposition provides two sub-matrices that can easily have an inverse multiply operation applied to them avoiding the need for actually computing the inverse.
Can you say more about what you want to do? On Tue, Jan 24, 2012 at 11:47 PM, Raphael Cendrillon < [email protected]> wrote: > I believe matrix inversion in general may not be so easy to distributed > within a map reduce framework, however you could consider using the SSVD > job to calculate an approximate matrix inverse. > > On 24 Jan, 2012, at 10:15 PM, B & E wrote: > > > Hi, > > > > I have a mahout newbie question -- I wanted to do some matrix operations > in mahout and just realized Mahout's matrix package doesn't seem to have > any API on providing an inverse of a matrix. > > > > Just curious was there a particular reason for such, or just so happens > no code was contributed to add that method to the matrix classes? > > > > thanks. > > > > Ejawce > >
