MPI实现交叉证验的实验代码，附有测试文件，运行在LInux系统，需要配置MPI环境。-MPI implementation of cross-validation of experimental code, accompanied by the test file, run LInux system, you need to configure the MPI environment.

交叉证验的多线程实现版本，附有代码的测试文件。需要在Linux下运行。，-Cross-validation of the multi-threaded implementation version of the test code is attached to the file. Need to run under Linux. ,