使用python解minimization問題

使用scipy的函數scipy.optimize.fmin_l_bfgs_b

官方說明
http://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.optimize.fmin_l_bfgs_b.html

簡易使用法
http://stackoverflow.com/questions/8672005/correct-usage-of-fmin-l-bfgs-b-for-fitting-model-parameters