information extraction

opinionanalysis,Recommendersystemsareeffectiveinpredictingthemostsuitableproductsforusers,suchasmoviesandbooks.Tofacilitatepersonalizedrecommendations,thequalityofitemratingsshouldbeguaranteed.However,afewratingsmightnotbeaccurateenoughduetotheuncertaintyofuserbehaviorandarereferredto