CCS Concepts:  $\bullet$   Computing methodologies  $\longrightarrow$  Natural language processing ;  Machine translation

1 INTRODUCTION

2 NEURAL MACHINE TRANSLATION

3 MULTIWAY NMT

4 MNMT FOR LOW-RESOURCE LANGUAGE PAIRS

5 MNMT FOR UNSEEN LANGUAGE PAIRS

6 MULTI-SOURCE NMT

7 MULTILINGUALISM IN OLDER PARADIGMS

8 DATASETS AND RESOURCES

9 CONNECTIONS WITH DOMAIN ADAPTATION

10 FUTURE RESEARCH DIRECTIONS

11 CONCLUSION