clarification on lecture 9

[rohanag]

I have a slight problem with delta_E_in in slide 23 of lecture 9.



I think there should be a negative sign in the exponentiation term,
e^(y_n * w.transpose * x_n) should be e^( - y_n * w.transpose * x_n )

as it would result from differentiating the cross entropy error? Please clarify.



Thank you

[IamMrBB]

The formula on the slide is correct.



now multiply both numerator and denominator with and the right formula follows since

[rohanag]

got it, thanks