A Bootstrapping Method for Finer-Grained Opinion Mining Using Graph Model Shu Zhang author Yingju Xia author Yao Meng author Hao Yu author 2009-12 text Proceedings of the 23rd Pacific Asia Conference on Language, Information and Computation, Volume 2 Olivia Kwong editor City University of Hong Kong Hong Kong conference publication zhang-etal-2009-bootstrapping https://aclanthology.org/Y09-2017/ 2009-12 589 595