The Scientific Literature Corpus for Chinese Negation and Uncertainty Identification. - Zhancheng Chen; Bowei Zou; Qiaoming Zhu; Peifeng Li (CLSW, 2013)

Chinese Negation and Speculation Detection with Conditional Random Fields. - Zhancheng Chen; Bowei Zou; Qiaoming Zhu; Peifeng Li (NLPCC, 2013)