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230116 (1) [Avatar] Offline
#1
The layer_2_delta calculation in chapter 6, section 24 (6.24, "Back Propagation in Code") is presented as (walk_vs_stop[i:i+1] - layer_2). I believe this should be corrected in the book and sample code to be (layer_2 - walk_vs_stop[i:i+1]) as presented in chapter 6, section 26 (6.26, "Putting it all together").