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July 18th, 2012, 09:12 AM  #1 
Newbie Joined: Jul 2012 Posts: 2 Thanks: 0  Sigmoid function
Hello, I wonder if someone could help me formulate a sigmoid function? The range of the input can be both positive and negative, let's say 1.0 to 1.0, whereas the output is just positive, 0 to 1.0. Any help appreciated? Rupert 
July 18th, 2012, 02:37 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,933 Thanks: 2207 
(1  sin(?x/2))/2, where x ? [1, 1]


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function, sigmoid 
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