looking for a function similar to mapminmax
显示 更早的评论
Hi,
As far as I know mapminmax Map matrix row minimum and maximum values to [-1 1].What I am looking for is that I want the data to be transformed into the interval [0,1].
For instance after using artificial neural network, I have gained the following vector for my response: r= 0.36293 46.949 136.57 1159
But the original example has written its output in something like :
r= 0.28 0.58 0.16 0.29
How can I change my data to be able to compare my result with that one?
Thank in advance for your comments
采纳的回答
Greg Heath
2014-3-6
编辑：Greg Heath
2014-3-6
1 个投票
1. Convert targets to closed interval [0, 1]
2. Use LOGSIG for the output transfer function
Thank you for formally accepting my answer
Greg
更多回答（3 个）
Greg Heath
2014-3-16
minA = min(A(:))
maxA = max(A(:))
(B- minB)/(maxB-minB) = (A-minA)/(maxA-minA)
B = minB +(maxB-minB)*(A-minA)/(maxA-minA)
Hope this helps
Greg
Jos (10584)
2014-2-27
A = ceil(10*rand(4,4)) % example data
A = A - min(A(:)) % map minimum value of A to 0 (thereby changing the maximum)
A = A ./ max(A(:)) % scale between 0 and 1
Respaco
2014-2-27
0 个投票
3 个评论
Jos (10584)
2014-2-27
But you asked for that! To map the Minimum not to -1 but to zero …
Can you rephrase your question?
Respaco
2014-2-27
Jos (10584)
2014-2-27
How exactly? What is the relation between the input and output?
Input = [1 2 3]
Output = ... ??? % but all values between 0 and 1
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