modeltoNLPbenchmarksequencetag- gingdatasets.WeshowthattheBI- LSTM-CRFmodelcanefficientlyuseboth pastandfutureinputfeaturesthanksto abidirectionalLSTMcomponent.Itcan alsousesentenceleveltaginformation thankstoaCRFlayer.TheBI-LSTM- CRFmodelcanproducestateoftheart(or ...