作者:Elkan,Charles摘要:Log-linearmodelsareafar-reachingextensionoflogisticregression,whilecon-ditionalrandomfields(CRFs)areaspecialcaseoflog-linearmodelssuitableforso-calledstructuredlearningtasks.Structuredlearningmeanslearningtopredictoutputsthathaveinternalstructure.Forexample,recognizingha