european_swaption_lmm.txt very nice implementation of complicated LMM. Informative for QF applications

全局收敛的L-M方法，此方法可以求解非线性方程组-Global convergence of LM method that can solve nonlinear equations

拉格朗日最小二乘法，用于求解非线性最小二乘问题，需自己输入目标函数-Lagrangian least squares method for solving nonlinear least squares problems, the need to enter their own objective function