Bootstrapping for Named Entity Tagging Using Concept-based Seeds Cheng Niu author Wei Li author Jihong Ding author Rohini K Srihari author 2003 text Companion Volume of the Proceedings of HLT-NAACL 2003 - Short Papers conference publication niu-etal-2003-bootstrapping https://aclanthology.org/N03-2025/ 2003 73 75