Paper: Treatment Of Long Distance Dependencies In LFG And TAG: Functional Uncertainty In LFG Is A Corollary In TAG

ACL ID P89-1027
Title Treatment Of Long Distance Dependencies In LFG And TAG: Functional Uncertainty In LFG Is A Corollary In TAG
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 1989
Authors

In this paper the functional uncertainty machin- ery in LFG is compared with the treatment of long distance dependencies in TAG. It is shown that the functional uncertainty machinery is redundant in TAG, i.e., what functional uncertainty accom- plishes for LFG follows f~om the TAG formalism itself and some aspects of the linguistic theory in- stantiated in TAG. It is also shown that the anal- yses provided by the functional uncertainty ma- chinery can be obtained without requiring power beyond mildly context-sensitive grammars. Some linguistic and computational aspects of these re- sults have been briefly discussed also.