•Updates to output
units:
W'j,i ß Wj,i + a´aj´Di
•Computation of error
for previous layer units:
Dj ß g'(inj) ´ sumi(Wj,i´Di)
•Process continues with
previous layer:
W'k,j ß Wk,j + a´ak´Dj
Dk ß g'(ink) ´ sumj(Wk,j´Dj)
•Repeat until input
layer is reached (e.g. ak = Ik)
