Applying licenser rules to a grammar with continuous constituents
Tobias Kaufmann, Beat Pfister · Proceedings of the International Conference on Head-Driven Phrase Structure Grammar · 2007
Licenser rules have originally been introduced in Müller (1999) as a part of a grammar based on discontinuous constituents. We propose licenser rules as a means to avoid underspecified empty elements in grammars with continuous constituents. We applied them to a verb movement analysis of the German main clause with right sentence bracket and to complement extraposition. To reduce the number of unnecessary hypotheses, we extended the licenser rule concept with a licenser binding technique. We compared the licenser rule approach to an approach based on underspecified traces with respect to processing performance. In our experiment, the use of licenser rules reduced the parse time by a factor of 13.5.