Supertag Based Pre-ordering in Machine Translation.
Rajen Chatterjee, Anoop Kunchukuttan, Pushpak Bhattacharyya · 2014
This paper presents a novel approach to integrate mildly context sensitive grammar in the context of pre-ordering for machine translation. We discuss the linguistic insights available in this grammar formalism and use it to de-velop a pre-ordering system. We show that mildly context sensitive gram-mar proves to be beneficial over con-text free grammar, which facilitates better reordering rules. For English to Hindi, we see significant improve-ment of 1.8 BLEU and error reduc-tion of 4.46 TER score over CFG based pre-ordering system, on the WMT14 data set. We also show that our ap-proach improves translation quality for English to Indian languages machine translation over standard phrase based systems. 1