# Bayesian updating of probabilities in rating systems due to head-to-head results

**URL:** <https://boards.straightdope.com/t/bayesian-updating-of-probabilities-in-rating-systems-due-to-head-to-head-results/751177>\
**Category:** Factual Questions\
**Created:** [April 4, 2016, 4:30pm UTC](https://boards.straightdope.com/t/bayesian-updating-of-probabilities-in-rating-systems-due-to-head-to-head-results/751177 "2016-04-04T16:30:17Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![glowacks](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/glowacks/32/5548_2.png) [@glowacks](https://boards.straightdope.com/u/glowacks)\
**Post date:** [April 10, 2016, 5:21pm UTC](https://boards.straightdope.com/t/bayesian-updating-of-probabilities-in-rating-systems-due-to-head-to-head-results/751177/21 "2016-04-10T17:21:07Z")

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The longer I think about this, the more I think it’s not solvable this way. The reversed conditionals that I’m looking for need to be obvious/given in order to apply Bayes’ rule. I’ll have to look at it another way.

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