there are so many "styles" to express neural net in mathematical notation, for example Michael Nielson defines $w_{jk}$ as weight from $k$-th neuron to $j$-th, Andrew Ng defines it otherwise, some people treat bias term as neuron with fixed weight equal to $1$,it is not big deal I guess, but when I derive equation from different notation style it makes different equation (however the both equations has the same meaning), and suppose that I want to write bachelor thesis or something, what is the most common mathematical notation style to express neural net ? is there any standard to write to represent neural net in mathematical notation...thank you
2026-03-26 07:40:33.1774510833
Mathematical notation for neural network
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One of the standard text books about neural networks is
As it is so well-known, many lectures / papers use the same notation.
I don't think it matters too much which notation you use, as long as you explain it and as long as you are consistent. I think your notation should either be the same as one book / paper you rely on or be of advantage for whatever you want to do / show.