Ackley, Hinton & Sejnowski, A Learning Algorithm for Boltzmann Machines, 1985 · §3.1–3.2, Eq. 8–10, appendix

The G-Divergence & Information LandscapeKullback–Leibler optimization in a Boltzmann machine

step 0 /

G over two weights

● gradient descent● sign rule
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G over the steps log scale

Gradient true direction against the step taken