a4f4dc39620b5b9a2301c8ec786c632f3eabd814,pymc3/step_methods/hmc/quadpotential.py,QuadPotential,velocity,#QuadPotential#Any#,126

Before Change

        self.L = scipy.linalg.cholesky(A, lower=True)

    def velocity(self, x):
        return tt.dot(self.A, x)

    def random(self):
        n = floatX(normal(size=self.L.shape[0]))
        return scipy.linalg.solve_triangular(self.L.T, n)

After Change

class QuadPotential(object):
    def velocity(self, x):
        raise NotImplementedError("Abstract method")

    def energy(self, x):
        raise NotImplementedError("Abstract method")

Instances