Identification of Opinion Holders Lun-Wei Ku author Chia-Ying Lee author Hsin-Hsi Chen author 2009-12 text International Journal of Computational Linguistics & Chinese Language Processing, Volume 14, Number 4, December 2009 Yuen-Hsien Tseng editor Kuang-Hua Chen editor conference publication ku-etal-2009-identification https://aclanthology.org/O09-6003/ 2009-12