In the segmentation literature, several previous systems learn lexical items from variable input (Elsner et al., 2013;Daland and Pierrehumbert, 2011;Rytting et al., 2010;Neubig et al., 2010;Fleck, 2008).
these models use pre-processed representations of the acoustics (phonetic transcription or posterior probabilities from a phone recognizer) rather than inducing an acoustic category structure directly.