Study and Implementation of Monolingual Approach on Indonesian Question Answering for Factoid and Non-Factoid Question Alvin Andhika Zulen author Ayu Purwarianti author 2011-12 text Proceedings of the 25th Pacific Asia Conference on Language, Information and Computation Helena Hong Gao editor Minghui Dong editor Institute of Digital Enhancement of Cognitive Processing, Waseda University Singapore conference publication zulen-purwarianti-2011-study https://aclanthology.org/Y11-1067/ 2011-12 622 631