Quantitative evaluation of machine translation using two-way MT Shoichi Yokoyama author Akira Kumano author Masaki Matsudaira author Yoshiko Shirokizawa author Mutsumi Kawagoe author Shuji Kodama author Hideki Kashioka author Terumasa Ehara author Shinichiro Miyazawa author Yasuo Nakajima author 1999-sep 13-17 text Proceedings of Machine Translation Summit VII Singapore, Singapore conference publication yokoyama-etal-1999-quantitative https://aclanthology.org/1999.mtsummit-1.84/ 1999-sep 13-17 568 573