This refers to the mathematical formula used to estimate the "distribution difference" between two sets of data.
Place the entire folder into your MMD UserFile/Model directory. Download mmd27 rar
If you are looking for a character model for the MikuMikuDance animation software, "mmd27" is often a shorthand for a specific model or a set of assets (like a "TDA" style model). This refers to the mathematical formula used to