We present a new adaptive method for electronic structure calculations based on novel fast algorithms for reduction of multivariate mixtures. In our calculations, spatial orbitals are maintained as ...

We propose an affine extension of the linear Gaussian term structure model (LGM) such that the instantaneous covariation of the factors is given by an affine process on semidefinite positive matrixes.

Density estimation problems are characterized by their normalization and non-negativity condition for . Thus, the prior density can only be non-zero for such for which is positive and normalized over ...