The RWTH machine translation system for WMT 2009

RWTH participated in the shared transla-tion task of the Fourth Workshop of Sta-tistical Machine Translation (WMT 2009) with the German-English, French-English and Spanish-English pair in each transla-tion direction. The submissions were gen-erated using a phrase-based and a hierar-chical statistical machine translation sys-tems with appropriate morpho-syntactic enhancements. POS-based reorderings of the source language for the phrase-based systems and splitting of German com-pounds for both systems were applied. For some tasks, a system combination was used to generate a final hypothesis. An ad-ditional English hypothesis was produced by combining all three final systems for translation into English.