From the perspective of probe 𝑃, the correction of the CG-LJ exclusion yields matching the effective volume of the CG representation from its AA representation 𝕍 𝑖(𝑃) 𝐴𝐴 . For the simplest case (one pair of CG particles), the particle 𝑗 and 𝑖 serve as the probe particle for particle 𝑖 and 𝑗 respectively. In this case, the error function 𝜒 2