loss_func = torch.nn.SmoothL1Loss(reduce=False, size_average=False) input = torch.autograd.Variable(torch.randn(3,4)) target = torch.autograd.Variable(torch.randn(3,4)) loss = loss_func(input, target) print(input); print(target); print(loss) print(input.size(), target.size(), loss...
1.1平方损失函数(quadratic loss function) 是MSE的单个样本损失,又叫平方损失(squared loss) 是指预测值与实际值差的平方。有时候为了求导方便,在前面乘上一个1/2。 1.2 绝对(值)损失函数(absolute loss function) 是MAE单个样本损失,又叫绝对偏差(absolute Loss)该损失函数的意义和上面差很少,只不过是取了绝对...
func_grad= theano.function([], loss_and_grad[1], givens={ X_var: s_X, Y_var: s_Y }, name='func_grad');defcost(wb): s_Wb.set_value(wb, borrow=True) cost=func_cost()printcostreturncostdefgrad(wb): s_Wb.set_value(wb, borrow=True)returnfunc_grad()defcb(wb): s_Wb.set_...
三、自定义Loss Funcion + L2 除了Regulation方法,那就自定义带有L1,L2的loss function,下面是个参考。 Goto:Implementing L2-constrained Softmax Loss Function on a Convolutional Neural Network using TensorFlow End.
loss func如下: importnumpyasnpimportmindspore.nnasmsnnimportmindspore.opsasopsclasshetero_loss(msnn.Cell):def__init__(self, margin=0.1, dist_type='l2'):super(hetero_loss, self).__init__() self.margin = margin self.dist_type = dist_typeifdist_type =='l2': ...
lossFunc— Loss function type "mse" (default) | "mad" Loss function type, specified as one of these values: Loss Function TypeDescription "mse" Mean squared error "mad" Mean absolute deviation Example: "mse"Output Arguments collapse all err— Smaller-the-better accuracy measure for learned fe...
return func(*args, **kwargs) File "C:\Users\ilove\AppData\Roaming\Python\Python37\lib\site-packages\keras\engine\training.py", line 1418, in fit_generator initial_epoch=initial_epoch) File "C:\Users\ilove\AppData\Roaming\Python\Python37\lib\site-packages\keras\engine\training_generator.py...
LossFunc ||--o "Mean Squared Error" LossFunc ||--o "Cross Entropy Loss" LossFunc ||--o "Log Loss" LossFunc ||--o "Squared Logarithmic Error" 参考文献: [Deep Learning Book]( [Keras Documentation]( 注:以上代码仅为示例,实际应用中可能需要根据具体情况进行修改和调整。
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？在Stack Overflow中看到了类似的问题 Custom loss function in PyTorch ，回答中说自定义的Loss Func...