常用损失函数，代价函数

 

 

 

引用及参考：
[1] https://blog.csdn.net/reallocing1/article/details/56292877
[2] https://blog.csdn.net/m_buddy/article/details/80224409
[3] https://blog.csdn.net/chaipp0607/article/details/76037351
[4] https://blog.csdn.net/shenxiaoming77/article/details/51614601

原文：https://www.cnblogs.com/lliuye/p/9549881.html