"Likelihood" can refer to both p(param|data) and p(data|param). See [1] for an example of the first, and [2] for the second. [1] http://en.wikipedia.org/wiki/

"Likelihood" can refer to both p(param|data) and p(data|param). See [1] for an example of the first, and [2] for the second. [1] http://en.wikipedia.org/wiki/Likelihood_function http://en.wikipedia.org/wiki/Likelihood_function [2] http://en.wikipedia.org/wiki/Bayes%27_theorem#Events http://en.wikipedia.org/wiki/Bayes%27_theorem#Events