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UFLDL-Tutorial-Exersices

GitHub上已经有小伙伴给出了关于Andrew Ng深度学习教程(UFLDL tutorial) 练习比较完整的实现( https://github.com/dkyang/UFLDL-Tutorial-Exercise )。这个repo将部分练习用C++实现,包括sparse autodecoder和stacked autodecoder,后续有需要还会继续改写。

矩阵运算使用了eigen3,L-BFGS优化使用了libLBFGS( https://github.com/chokkan/liblbfgs ), 显示feature map 时调用了opencv,程序调用的数据都源自于.mat文件。Project Properties 里提供了64位系统上的工程属性配置文件,仅供参考。log.txt和Weight Map.jpg是运行结果。

stacked autodecoder的实际运行速度对比matlab实现慢了两倍多(两者代码中矩阵运算并行度是一样的)==|||,具体是libLBFGS还是eigen3的原因暂未测试。

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