ALinearProgrammingFormulationforGlobalInferenceinNaturalLanguageTasksDanRothWen-tauYihDepartmentofComputerScienceUniversityofIllinoisatUrbana-ChampaignPage2NaturalLanguageUnderstandingViewofSolvingNLPProblemsPOSTaggingChunkingParsingWordSenseDisambiguationNamedEntityRecognitionCoreferenceResolutionSemanticRoleLabelingPage3WeaknessesofPipelineModelPropagationoferrorsBi-Directionalinteraction...