Captum based on regression does not require target as inputs?

[HelloWorldLTY]

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Hi, I am using Captum for explaining regression problems. I used to run Captum to explain classification problems and it works well, but if I input target to Captum for regression problems, errors of output shape will be thrown:

Error: output with format [50,1] which is inconsistent with label [1]

Therefore, the current Captum does not require us to assign labels as inputs. Is this correct? Targets or labels only work for multi-class classification, that is what I am guessing. Thank you so much!