递归消除法共1篇
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递归消除法：worker initialization failed: package or namespace load failed for ‘caret’.object ‘recvData’ is not exported by’namespace:parallel’
报错原因：R环境缺失一个包caret解决方法：参考这篇文章安装caret，https://bbs.statsape.com/q-and-a/578.html
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