  Strongly correlated materials are known to display qualitatively distinct
emergent behaviors at low energy. Conveniently, the superposition principle of
quantum mechanics ensures that, upon absorbing quantum fluctuation, these rich
low-energy behaviors can always be effectively described by dressed particles
with fully quantized charge, spin, and orbitals structure. Such a powerful and
simple description is, however, difficult to access through density functional
theory (DFT) calculations, since in terms of bare particles the quantum
fluctuation would heavily smear the quantized quantities. To address this
difficulty, we propose an `interaction annealing' approach to decipher the
dominant valence and orbital structure by suppressing the charge fluctuation
through enhancing ionic charging energy. Applying this approach to
ferroelectric semi-metal WTe${_2}$ as a demonstration, we identify a dominant
ferro-orbital ordered structure with W ion in a $d^2$ spin-0 configuration. The
proposed approach is straightforward to implement in standard DFT calculations
to grant additional access to essential low-energy physics.
