"Utility functions are sigmoidal. A serviceable utility function over one dimension might be u(U) = k * ([1 / (1 + e^(-U))] - .5). It's steep around U=0, and shallow for U >> 0 and U << 0."
The green, blue and red curves show the utility function for increasing values of k.
In response to
"http://lesswrong.com/lw/7o/on_utilons_utility_and_crack_cocaine/"
Saturday, April 4, 2009
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