A platform-independent downloadable for finding constraint weightings and constraint rankings, and for calculating typological predictions in both serial and parallel versions of Optimality Theory and Harmonic Grammar.

HG in R

On-line and batch learners for Harmonic Grammar implemented as R scripts, along with input files and other related materials.

Other software-related material:

Praat learning “guide”

Some information on how to use the various on-line learning algorithms implemented in Praat. See “Perceptron” at the above HG-R link for an implementation of the HG learners in R, which is *much* slower, but is also more flexible in some ways.

Web-based experiments

A website with information on software for web-based experiments being developed at UMass Amherst, and other resources for running experiments over the internet.


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