Erratum to Incremental Syntactic Language Models for Phrase-based Translation

Schwartz et al. (2011) presented a novel technique for incorporating syntactic knowledge into phrase-based machine translation through incremental syntactic parsing, and presented empirical results on a constrained Urdu-English translation task. The work contained an error in the description of the experimental setup, which was discovered subsequent to publication. After correcting the error, no improvement in BLEU score is seen over the baseline when the syntactic language model is used on the constrained UrduEnglish translation task. The error does not affect the originally reported perplexity results.