Paper: A joint model of word segmentation and phonological variation for English word-final /t/-deletion

ACL ID P13-1148
Title A joint model of word segmentation and phonological variation for English word-final /t/-deletion
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2013
Authors

Word-final /t/-deletion refers to a common phenomenon in spoken English where words such as /wEst/ ?west? are pro- nounced as [wEs] ?wes? in certain con- texts. Phonological variation like this is common in naturally occurring speech. Current computational models of unsu- pervised word segmentation usually as- sume idealized input that is devoid of these kinds of variation. We extend a non-parametric model of word segmenta- tion by adding phonological rules that map from underlying forms to surface forms to produce a mathematically well-defined joint model as a first step towards han- dling variation and segmentation in a sin- gle model. We analyse how our model handles /t/-deletion on a large corpus of transcribed speech, and show that the joint model can perform word segmentation and rec...