Is there any function can compute the value of sgn?
2 次查看(过去 30 天)
显示 更早的评论
Hello,
I read in a paper the following : sgn(A.B), where A and B are vectors. So what does that mean and is there any built in function that can do that? note that sgn is the sigmoid.
Regards,
0 个评论
采纳的回答
Star Strider
2018-8-8
You can easily write your own:
sgn = @(x,a,c) 1./(1 + exp(-a.*(x-c))); % Create Function
x = 0:0.1:10;
y = sgn(x, 2, 4);
plot(x,y)
xlabel('sigmf, P = [2 4]')
ylim([-0.05 1.05])
This plot matches the one in the documentation.
Experiment to get the result you want.
2 个评论
Star Strider
2018-8-9
As always, my pleasure.
They are scaling constants for the membership function.
This may not be the version you want, however. If you have a description of your function and the arguments, and the context in which you are using it, we can get closer to creating it. There appear to be several versions of the sigmoid function.
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Histograms 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!