共轭梯度算法解三维变周期边界条件泊松方程，MPI并行计算和串行计算各一份实例-Conjugate gradient algorithm solving the three-dimensional Poisson equation with periodic boundary conditions, by MPI parallel computing and serial computation

一个用PYTHON编写的梯度提升算法，适合做分类回归，希望对你有用-A gradient boost algorithm in PYTHON, suitable for classification of regression, hope useful to you