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<pre><span style="font-family:arial,sans-serif">A new version of the ACT-R software is now available on the prerelease page of the ACT-R web site:
<<a href="http://act-r.psy.cmu.edu/next/" target="_blank">http://act-r.psy.cmu.edu/next/</a>>
It will be moved to the current version next week.
<br>Here are the notable changes and additions:<br><br>- Visual-location and aural-location features have a new attended status called requested which is true between the request to attend the feature and when that attention shift competes.<br>- The audio module has a way to present a sound without a pre-specified end time using new-ongoing-sound and end-ongoing-sound.<br>- The speech module has the option of using syllable counts for words from a dictionary instead of just using the string length. It is added as an extra (syllable-count) to avoid the overhead when not needed.<br>- The tutorial units have an additional document that is a cumulative summary of the production syntax and action semantics covered to that point.<br>- There are Jupyter notebook pages for editing and running the demos and assignments of the tutorial in JupyterLab. They are not a replacement for the tutorial unit texts, just a way to view and run the code. The standalone distributions have a run_ACT-R.ipynb file at the top level as a starting point with a cell to run the ACT-R software and links to the individual unit notebooks. This is a very simple first pass/proof of concept, and if you use it please let me know any feedback you have.<br></span><span style="font-family:arial,sans-serif">
If you have any questions or problems with this version let me know.
Dan</span></pre>
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