Some systems focus on syntactic generation (Bangalore and Rambow, 2000;Langkilde-Geary, 2002;Filippova and Strube, 2008) or linearization and inflection (Filippova and Strube, 2007;He et al., 2009;Wan et al., 2009;Guo et al., 2011a), and avoid thus the need to cope with this projection all together; some use a rule-based module to handle the projection between non-isomorphic structures (Knight and Hatzivassiloglou, 1995;Langkilde and Knight, 1998;Bohnet et al., 2011); and some adapt the meaning structures to be isomorphic with syntactic structures (Bohnet et al., 2010).
it is obvious that a "syntacticization" of meaning structures can be only a temporary workaround and that a rule-based module raises the usual questions of coverage, maintenance and portability.