www.rulequest.com for excellent decision-tree building software.
Commercial not free. Academic pricing available.
-bruce
At 07:12 PM 1/18/2006, Caren Brinckmann wrote:
>Dear all,
>
>we are currently working on corpus-based models of duration, F0,
>intensity, and segmental reductions in read and spontaneous speech.
>For the first part of our study we will use decision trees.
>
>Since our database is fairly large, I am looking for an efficient
>decision tree tool with the following features:
>
>* nominal and numeric input features and predictees (classification
>and regression trees)
>* binary as well as multi-way splits
>* efficient handling of large datasets (200,000
>cases/records/instances with up to 100 attributes/features/variables)
>* nice to have: integrated feature selection algorithm
>
>In previous studies, I've worked with "wagon" from the Edinburgh
>Speech Tools Library
>(http://www.cstr.ed.ac.uk/projects/speech_tools/) and "J48" from
>Weka (http://www.cs.waikato.ac.nz/ml/weka/). While wagon is very
>fast and memory-efficient, it only allows binary splits (as far as I
>know). Weka allows multi-way splits, but is too slow and
>memory-consuming for our current datasets.
>
>I'm looking forward to your suggestions!
>
>Kind regards,
>
>Caren.
>
>P.S.: If you know any other mailing list or forum where I could post
>my question, please let me know.
>
>--
>Caren Brinckmann
>Saarland University, FR 4.7 Institute of Phonetics
>P.O.Box 151150, 66041 Saarbruecken, Germany
>Phone: +49-681-3024244, Fax: +49-681-3024684
>
>
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