CMU System Combination for WMT'09

This paper describes the CMU entry for the system combination shared task at WMT’09. Our combination method is hypothesis selection, which uses information from n-best lists from several MT systems. The sentence level features are independent from the MT systems involved. To compensate for various n-best list sizes in the workshop shared task including firstbest-only entries, we normalize one of our high-impact features for varying sub-list size. We combined restricted data track entries in French English, German English and Hungarian English using provided data only.