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solipsist comments on Am I Understanding Bayes Right? - Less Wrong Discussion

3 Post author: CyrilDan 13 November 2013 08:40PM

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Comment author: solipsist 14 November 2013 03:34:07PM 3 points [-]

It's simply that likelihood is relative to a model, whereas probability is not relative to anything

Likelihood is the probability of the data given the model, not the probability of the model given the data. A likelihood function gives you a number between 0 and 1 for every model, but that number does not mean anything like "how certain is it that this model is true".