why is reparamethizing needed in hamiltonian monecarlo why is reparameterizing necessary why is hamiltonian monte carlo reparamerated why is reparameterize necessary in hamiltonian monte carlo why is reparameterization necessary why is reparameterization necessary why is reparameterizing necessary why is reparameterize necessary why is reparameterizing necessary for hamiltonian monte carlo why is reparameterizing necessary hamiltonian monte carlo why is reparameterizing necessary why reparameterized the model why is reparameterizing useful for hamilton's method why is reparameterizing necessary for a hamiltonian model why is reparameterizing needed why would a hamiltonian posterior be problematic why is reparameterizing needed in hamiltonian monte carlo which is a problem with hamiltonian monte carlo? why is reparameterizing required why is reparameterize necessary