大神们求助,caffe日志文件中train net output loss 和iteration loss两个loss各代表什么意思?

caffe日志文件中train net output loss 和iteration loss两个loss各代表什么意思?、
就像下文中,每次迭代都有两种loss,想问下这两个loss有什么区别吗
 

.. ...Iteration 900, loss 0.649719 ... Train net output #0: loss = 0.649719 (* 1 = 0.649719 loss ) ... Iteration 900, lr = 0.001 ...Iteration 1000, loss 0.892498 ... Train net output #0: loss = 0.892498 (* 1 = 0.892498 loss ) ... Iteration 1000, lr = 0.001 ...Iteration 1100, loss 0.550938 ... Train net output #0: loss = 0.550944 (* 1 = 0.550944 loss ) ... Iteration 1100, lr = 0.001
 
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