1. Yangarber, R., Grishman, R.: NYU: description if the proteus/PET system as used for MUC-7. In: Proceedings of the 7th Message Understanding Coferences, pp. 117–121 (1998)
2. Zhao, S., Grishman, R.: Extracting relations with integrated information using kernel methods. In: Proceeding ACL 2005 Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics, pp. 419–426 (2005)
3. Zhou, G., Su, J., Zhang, J., Zhang, M.: Exploring various knowledge in relation extraction. In: Proceeding ACL 2005 Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics, pp. 427–434 (2005)
4. Suzuki, J., Isozaki, H., Maeda, E.: Convolution kernels with feature selection for natural language processing tasks. In: Proceedings of the 42nd Annual Meeting of the Association for Computational Linguistics, pp. 199–206 (2004)
5. Yu, H., Qian, L., Zhou, G., Zhu, Q.: Chinese semantic relation based on unified syntactic and entity semantic tree. J. Chin. Inf. Process. 24(5), 17–23 (2010)