Basicmodel-neutral-lbs-10-207-0-v1.0.0.pkl

: These numbers typically refer to specific configuration parameters, such as the number of shape coefficients (10) used to define body variety.

If you later see v1.1.0 , it implies the same 10-207-0 hyperparameters but with added functionality (e.g., calibration). If you see v2.0.0 , the feature count 10 may have changed. basicmodel-neutral-lbs-10-207-0-v1.0.0.pkl

import pickle import skl2onnx from skl2onnx import convert_sklearn : These numbers typically refer to specific configuration

: Refers to the number of pose blend shapes used to correct skinning artifacts during movement. v1.0.0 : The specific version of the SMPL model release. calibration). If you see v2.0.0

Most likely, this file contains a scikit-learn pipeline or a LightGBM/XGBoost model.