1. Faculty of Applied Sciences, Macao Polytechnic University, R. de Luís Gonzaga Gomes, Macao SAR, China, --- Select a Country ---
2. Engineering Research Centre of Applied Technology on Machine Translation and Artificial Intelligence of Ministry of Education, Macao Polytechnic University, R. de Luís Gonzaga Gomes, Macao SAR, China, --- Select a Country ---
3. Department of Computer Science and Engineering - DISI, University of Bologna, Via Zamboni, 33, 40126 Bologna, Italy, --- Select a Country ---
4. UCLA Computer Science Department, 404 Westwood Plaza, Los Angeles, CA, U.S.A., --- Select a Country ---