Paper: PCFGs With Syntactic And Prosodic Indicators Of Speech Repairs

ACL ID P06-1021
Title PCFGs With Syntactic And Prosodic Indicators Of Speech Repairs
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2006
Authors

A grammatical method of combining two kinds of speech repair cues is presented. One cue, prosodic disjuncture, is detected by a decision tree-based ensemble clas- sifier that uses acoustic cues to identify where normal prosody seems to be inter- rupted (Lickley, 1996). The other cue, syntactic parallelism, codifies the expec- tation that repairs continue a syntactic category that was left unfinished in the reparandum (Levelt, 1983). The two cues are combined in a Treebank PCFG whose states are split using a few simple tree transformations. Parsing performance on the Switchboard and Fisher corpora sug- gests that these two cues help to locate speech repairs in a synergistic way.