Another small query if you will… in my Equation(2), I have the term as this:

However, In “Efficient Backprop” by Yann Le Cun, (http://yann.lecun.com/exdb/publis/pdf/lecun-98b.pdf 2 - Page 4 Equation 9), he has a transpose on the Wn term…and I can’t seem to understand why a transpose of the weights is being done…