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arxiv: physics/0310167 · v1 · pith:F76CMEGUnew · submitted 2003-10-31 · ⚛️ physics.data-an

Pitfalls of Goodness-of-Fit from Likelihood

classification ⚛️ physics.data-an
keywords likelihoodgoodness-of-fitachievedesiredenergyexamplesfailsfits
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The value of the likelihood is occasionally used by high energy physicists as a statistic to measure goodness-of-fit in unbinned maximum likelihood fits. Simple examples are presented that illustrate why this (seemingly intuitive) method fails in practice to achieve the desired goal.

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