Sigmoid transfer function

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rick1138rick1138
Posted:
in General Discussion edited January 2014
Does anyone know of a sigmoid transfer function that approximates 1/(1+e^-x) that doesn't use exponents. In the language I am using I am limited to addition subtraction multiplication and division. I saw the function a few days ago but I can't remember it and I don't remember what it was.Any information would be appreciated.

Comments

  • Reply 1 of 4
    ghost_user_nameghost_user_name Posts: 22,667member
    <img src="graemlins/bugeye.gif" border="0" alt="[Skeptical]" />



    The Genius Bar is <a href="http://forums.appleinsider.com/cgi-bin/ultimatebb.cgi?ubb=forum&f=7"; target="_blank">right this way</a>, sir.
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  • Reply 2 of 4
    ghost_user_nameghost_user_name Posts: 22,667member
    Look up table?
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  • Reply 3 of 4
    cdhostagecdhostage Posts: 1,038member
    I hate math.
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  • Reply 4 of 4
    sebseb Posts: 676member
    Oh. I thought this was a carry over forum from the band name thread.



    woops!
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