The feature templates for REG combine properties of the candidate RE (PoS and lemma for top node and its children, length) with properties of the RE slot in the tree: lemma, PoS and labels for the (i) mother node, (ii) grandmother node, (iii) uncle and sibling nodes.
the REG module applied on prelinSyn −re , predicted shallow and linearized trees, clearly outperforms the module applied on deeplinSyn −re .