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- Probability_matching abstract "Probability matching is a suboptimal decision strategy in which predictions of class membership are proportional to the class base rates. Thus, if in the training set positive examples are observed 60% of the time, and negative examples are observed 40% of the time, then the observer using a probability-matching strategy will predict (for unlabeled examples) a class label of "positive" on 60% of instances, and a class label of "negative" on 40% of instances. The optimal Bayesian decision strategy (to maximize the number of correct predictions, see Duda, Hart & Stork (2001)) in such a case is to always predict "positive" (i.e., predict the majority category in the absence of other information), which has 60% chance of winning rather than matching which has 52% of winning (where p is the probability of positive realization, the result of matching would be , here ). The suboptimal probability-matching strategy is of psychological interest because it is frequently employed by human subjects in decision and classification studies.".
- Probability_matching wikiPageExternalLink productCd-0471056693.html.
- Probability_matching wikiPageID "9731945".
- Probability_matching wikiPageRevisionID "592337920".
- Probability_matching hasPhotoCollection Probability_matching.
- Probability_matching subject Category:Cognitive_science.
- Probability_matching subject Category:Decision_theory.
- Probability_matching subject Category:Machine_learning.
- Probability_matching subject Category:Statistical_classification.
- Probability_matching comment "Probability matching is a suboptimal decision strategy in which predictions of class membership are proportional to the class base rates. Thus, if in the training set positive examples are observed 60% of the time, and negative examples are observed 40% of the time, then the observer using a probability-matching strategy will predict (for unlabeled examples) a class label of "positive" on 60% of instances, and a class label of "negative" on 40% of instances.".
- Probability_matching label "Probability matching".
- Probability_matching sameAs m.02pqhw9.
- Probability_matching sameAs Q7246881.
- Probability_matching sameAs Q7246881.
- Probability_matching wasDerivedFrom Probability_matching?oldid=592337920.
- Probability_matching isPrimaryTopicOf Probability_matching.