您可能正试图从'tanh'获取大数字，而'tanh'仅输出-1和1之间的数字.

You're probably trying to get big numbers from a 'tanh', which only outputs between -1 and 1.

例如，您不能使用tanh达到10.

You can't reach 10 with tanh, for instance.

要么用'linear'替换最终激活(输出任何内容)，要么将输出数据标准化为-1和1之内.

Either you replace the final activation with 'linear' (outputs anything), or you normalize your output data to be within -1 and 1.

如果数据始终为正，则可以尝试使用'softplus'而不是'linear'；如果选择对数据进行规范化，则将其设置为0到1之间并使用'sigmoid'.

If your data is always positive, you can try using 'softplus' instead of 'linear', and if you opt for normalizing data, make it between 0 and 1 and use 'sigmoid'.