NN Data Fitting - minimum

LuC
2016 4 11
2 个回答
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更新时间：2016 4 22
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I did the data fitting with neural networks and I got the function that looks very nice, i.e. there is a unique minimum and maximum on a given domain. How can I find the minimum and maximum?
EDIT: Added questions:
How would it be possible to find the x-axis and y-axis intercepts, i.e. f(x) = 0 and f(0)?
Furthermore, I want to estimate these data with the following model y = Dsin[C cos{(1 − E)Bx + E cos(Bx + 1)}]
How can I estimate parameters B, C, D and E (not constants) using NNs? Or it would be better to use Global Optimisation Algorithms, for instance GA?

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 采纳的回答

Greg Heath
Greg Heath 2016-4-12

0 个投票

See the help and doc documentation for
1. min
2. max
3. minmax
Hope this helps.
Thank you for formally accepting my answer
Greg

更多回答（1 个）

LuC
LuC 2016-4-19

0 个投票

Thank you.
How would it be possible to find the x-axis and y-axis intercepts, i.e. f(x) = 0 and f(0)?
Furthermore, I want to estimate these data with the following model y = Dsin[C cos{(1 − E)Bx + E cos(Bx + 1)}]
How can I estimate parameters B, C, D and E (not constants) using NNs? Or it would be better to use Global Optimisation Algorithms such as GA?

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Greg Heath
Greg Heath 2016-4-20
I do not see a NN being appropriate for those type of tasks.
Greg
LuC
LuC 2016-4-22
So I should try with the Global Optimisation Tools?

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