CCG parsing with one syntactic structure per n-gram

There is an inherent redundancy in natural languages whereby certain common phrases (or n-grams) appear frequently in general sen- tences, each time with the same syntactic anal- ysis. We explore the idea of exploiting this re- dundancy by pre-constructing the parse struc- tures for these frequent n-grams. When pars- ing sentences in the future, the parser does not have to re-derive the parse structure for these n-grams when they occur. Instead, their pre- constructed analysis can be reused. By gen- erating these pre-constructed databases over WSJ sections 02 to 21 and evaluating on sec- tion 00, a preliminary result of no signifi- cant change in F-score nor parse time was ob- served.