[mlpack-git] [mlpack] Add a primal-dual interior point SDP solver (#387)
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Tue Feb 3 10:59:03 EST 2015
Actually, there is something left to do... it looks like occasionally, the initial Z matrix passed to PrimalDualSolver is not symmetric positive definite:
`[FATAL] PrimalDualSolver::PrimalDualSolver(): initialZ needs to be symmetric positive definite.`
(according to the errors, at least.) This occurs sometimes in the tests:
It looks like Armadillo 4.000 and older did not support the expression '-arma::sp_mat()'. I'll take care of backporting that functionality shortly.
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