Decision tree learning code
Companion to Chapter 3 of Machine Learning textbook.
This is a simple CommonLisp implementation of the ID3 algorithm
described in Table 3.1 of the textbook. The code also defines the set
of training examples shown in Table 3.2. Therefore, you can modify
this code and experiment with it to create variations on the example
trace described in section 3.4 of the textbook.
This code is written in CommonLisp. The beginning of the file
contains documentation on how to use it. The file also contains the
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