Add optimize & fit model function to build_model.py
Add optimize & fit model function to build_model.py

mltsp/mltsp,bnaul/mltsp,mltsp/mltsp,acrellin/mltsp,bnaul/mltsp,mltsp/mltsp,acrellin/mltsp,acrellin/mltsp,bnaul/mltsp,bnaul/mltsp,acrellin/mltsp,acrellin/mltsp,mltsp/mltsp,acrellin/mltsp,mltsp/mltsp,bnaul/mltsp,mltsp/mltsp,bnaul/mltsp