New Paper: Learning Lexical Indexation
Monday, September 21st, 2009Rene’ Kager, Joe Pater and Andries Coetzee guest edited a volume of “Phonology” (Volume 26(1), 2009). The theme for the volume is “Phonological Models and Experimental Data”. I had two contributions in the volume: (i) The introduction with Pater and Kager. (ii) And a single-authored research paper with the title “Learning lexical indexation”.
Here is a link to the TOC of the volume:
Abstract of Andries’ paper: Learning lexical indexation.
Morphological concatenation often triggers phonological processes. For instance, addition of the plural suffix /-en/ to Dutch nouns causes
vowel lengthening in some nouns due to the stress-to-weight principle ([xat] vs. [xa:ten] ‘hole’). These kinds of processes often apply only
to a subset of words – not all Dutch nouns undergo this process ([kat] vs. [katen] ‘cat’). Nouns need to be lexically indexed as either undergoing this process or not. I investigate how phonological grammar and lexical indexation are learned when learners are confronted with data like these. Based on learnability considerations, I hypothesise that learners acquire a grammar with default non-alternation, so that novel items are treated as non-alternating. I report the results of artificial language learning experiments compatible with this hypothesis, and model these results in a version of the Biased Constraint Demotion algorithm (Prince & Tesar 2004).




