Related Work

The most recent related work can be found in the C-Star project [Levin et al. 1998] where a shallow representation is used for translation in a travel planning domain. The representation is basically a number of labels representing speech act, concepts and arguments like in

we have a single and a double available
give-information+availability+room
(room-type=(single & double))

The shortcomings of this very simple representation is obvious: more complex relations between two or more objects are not possible to represent in natural way. Consider:

a single room in hotel A would cost you 110 dollars, in hotel B 106

Since concepts (the hotels) and arguments (room-type and prices) are not linked by relations this utterance cannot be represented properly.