Thank you for your help!
I calculated them by myself, and found that they are same with the opponents in torchmetics.
The reason why I can’t understand the docs is that I mistake that the function accepts some weights as parameters.
In fact, “FBetaScore” only accepts a parameter named “average”, that only can be a string value such as ‘none’/‘weights’ and so on.
There is no opportunity we can specify some weights, they always accords to a fixed formula, if my comprehension is right.