Context dependent modeling of phones in continuous speech using decision trees
HLT '91 Proceedings of the workshop on Speech and Natural Language
Partitioning Nominal Attributes in Decision Trees
Data Mining and Knowledge Discovery
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The authors seek a fast algorithm for finding the best question to ask (i.e., best split of predictor values) about a predictor variable when predicting membership in more than two categories. They give a fast iterative algorithm for finding a suboptimal question in the N category problem by exploiting a fast algorithm for finding the optimal question in the two-category problem. The algorithm has been used in a number of speech recognition applications.