Guodong Zhou, Jian Su, Lingpeng Yang. Resolution of Data Sparseness in Named Entity Recognition Using Hierarchical Features and Feature Relaxation Principle. In Alexander F. Gelbukh, editor, Computational Linguistics and Intelligent Text Processing, 6th International Conference, CICLing 2005, Mexico City, Mexico, February 13-19, 2005, Proceedings. Volume 3406 of Lecture Notes in Computer Science, pages 750-761, Springer, 2005. [doi]
Abstract is missing.