def _mvmZ(self,x,RVdd,t):
        '''
        Matrix vector multiplication with Z=inv(K+inv(W))
        '''
        Zx = t*x - np.dot(RVdd.T,np.dot(RVdd,x))
        return Zx
dataset/ETHPy150Open marionmari/pyGPs/pyGPs/Core/inf.py/Inference._mvmZ/original