# Difference between revisions of "Belief update"

From Lesswrongwiki

PeerInfinity (talk | contribs) |
|||

(3 intermediate revisions by the same user not shown) | |||

Line 1: | Line 1: | ||

− | What you do to your beliefs, opinions and cognitive structure when new | + | What you do to your beliefs, opinions and cognitive structure when new [[evidence]] comes along. |

[[Cox's theorem]] says, roughly, that if your beliefs at any given time take the form of an assignment of a numerical "plausibility score" to every proposition, and if they satisfy a few plausible axioms, then your plausibilities must effectively be probabilities obeying the usual laws of probability theory, and your updating procedure must be the one implied by [[Bayes' theorem]]. | [[Cox's theorem]] says, roughly, that if your beliefs at any given time take the form of an assignment of a numerical "plausibility score" to every proposition, and if they satisfy a few plausible axioms, then your plausibilities must effectively be probabilities obeying the usual laws of probability theory, and your updating procedure must be the one implied by [[Bayes' theorem]]. | ||

− | ==See | + | ==See also== |

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

+ | *[[Evidence]], [[Conservation of expected evidence]] | ||

+ | *[[Belief]] | ||

+ | *[[Beliefs require observations]] | ||

+ | *[[Bayes' theorem]] | ||

+ | *[[Updateless decision theory]] | ||

{{stub}} | {{stub}} | ||

[[Category:Jargon]] | [[Category:Jargon]] | ||

[[Category:Concepts]] | [[Category:Concepts]] |

## Latest revision as of 02:49, 25 October 2009

What you do to your beliefs, opinions and cognitive structure when new evidence comes along.

Cox's theorem says, roughly, that if your beliefs at any given time take the form of an assignment of a numerical "plausibility score" to every proposition, and if they satisfy a few plausible axioms, then your plausibilities must effectively be probabilities obeying the usual laws of probability theory, and your updating procedure must be the one implied by Bayes' theorem.

## See also

- Evidence, Conservation of expected evidence
- Belief
- Beliefs require observations
- Bayes' theorem
- Updateless decision theory