Difference between revisions of "Evidence"

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'''Evidence''' for a given theory is the observation of an event that is more likely to occur if the theory is true than if it is false. (The event would be evidence against the theory if it is less likely if the theory is true.)
 
'''Evidence''' for a given theory is the observation of an event that is more likely to occur if the theory is true than if it is false. (The event would be evidence against the theory if it is less likely if the theory is true.)
  
 
The [[likelihood ratio]] term <math>\frac{P(B | A)}{P(B|\neg A)}</math> from [[Bayes' theorem]] is greater than 1 if the event B is evidence of the theory A, and less than 1 if the event is evidence against the theory.
 
The [[likelihood ratio]] term <math>\frac{P(B | A)}{P(B|\neg A)}</math> from [[Bayes' theorem]] is greater than 1 if the event B is evidence of the theory A, and less than 1 if the event is evidence against the theory.
 
==See also==
 
 
*[[Rational evidence]], [[Evidence of absence]], [[Extraordinary evidence]]
 
*[[Filtered evidence]]
 
*[[Generalization from fictional evidence]]
 
*[[Conservation of expected evidence]]
 
  
 
==Blog posts==
 
==Blog posts==
 
=====Posts by [[Eliezer Yudkowsky]]:=====
 
  
 
*[http://lesswrong.com/lw/jl/what_is_evidence/ What is Evidence?]
 
*[http://lesswrong.com/lw/jl/what_is_evidence/ What is Evidence?]
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*[http://lesswrong.com/lw/k1/no_one_can_exempt_you_from_rationalitys_laws/ No One Can Exempt You From Rationality's Laws]
 
*[http://lesswrong.com/lw/k1/no_one_can_exempt_you_from_rationalitys_laws/ No One Can Exempt You From Rationality's Laws]
 
*[http://lesswrong.com/lw/qk/that_alien_message/ That Alien Message]
 
*[http://lesswrong.com/lw/qk/that_alien_message/ That Alien Message]
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*[http://lesswrong.com/lw/1y9/information_theory_and_the_symmetry_of_updating/ Information theory and the symmetry of updating beliefs] by [[Academian]]
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==See also==
 +
 +
*[[Rational evidence]], [[Evidence of absence]], [[Extraordinary evidence]]
 +
*[[Filtered evidence]]
 +
*[[Generalization from fictional evidence]]
 +
*[[Conservation of expected evidence]]
  
 
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[[Category:Concepts]]
 
[[Category:Concepts]]

Latest revision as of 07:35, 9 June 2010

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Wikipedia has an article about

Evidence for a given theory is the observation of an event that is more likely to occur if the theory is true than if it is false. (The event would be evidence against the theory if it is less likely if the theory is true.)

The likelihood ratio term from Bayes' theorem is greater than 1 if the event B is evidence of the theory A, and less than 1 if the event is evidence against the theory.

Blog posts

See also