Secondly, we compare different syntax-based features combinations, as described in section 3.2.2.
we compare the following reranking models (defined by the feature set): moses, lex (lexical coupling + moses features), lab (label-specific coupling + moses features), posmaplex (lexical PoS mapping + moses features ), lab-lex (label-specific coupling + lexical coupling + moses features), lablex-posmap (label-specific coupling + lexical coupling features + generic PoS mapping).