Question about equation (3) and (5)

[djzgroup]

Equation (3)

• Since the variable of the SoftMax function is a matrix, a scalar cannot be obtained after calculation through the SoftMax function..

Equation (5)

• Why do summation here?
• Even if the summation here is correct, the i subscript can no longer be used here. At least change to j or i'?

[PJin0]

** Equation (3) **
The softmax operation in Equation (3) indicates exp(f_i *z_s)/sum(exp(f_i' * z_s)).

**Equation (5) **
That's a typo. We will correct it and thank you for letting me know:).