Duality Regularization for Unsupervised Bilingual Lexicon Induction [article]

Xuefeng Bai and Yue Zhang and Hailong Cao and Tiejun Zhao
2019 arXiv   pre-print
Unsupervised bilingual lexicon induction naturally exhibits duality, which results from symmetry in back-translation. For example, EN-IT and IT-EN induction can be mutually primal and dual problems. Current state-of-the-art methods, however, consider the two tasks independently. In this paper, we propose to train primal and dual models jointly, using regularizers to encourage consistency in back translation cycles. Experiments across 6 language pairs show that the proposed method significantly
more » ... utperforms competitive baselines, obtaining the best-published results on a standard benchmark.
arXiv:1909.01013v1 fatcat:nqndyhydtrbabg6uwejs3krqei