InformationScienceandStatisticsPatternrecognitionhasitsoriginsinengineering,whereasmachinelearninggrewoutofcomputerscience.However,theseactivitiescanbeviewedastwofacetsofthesamefield,andtogethertheyhaveundergonesubstantialdevelopmentoverthepasttenyears.Inparticular,Bayesianmethodshave