[mlpack-git] [mlpack] DET has only one leaf prior to pruning every time (#515)

[Jerone Andrews]

Jerones-MacBook:5vs2 Jerone$ mlpack_det -t 5vs2Train1.txt -T 5vs2Test.txt -e aTrainEst.txt -E aTestEst.txt -M aOutput.txt -v -f 0
[INFO ] Loading '5vs2Train1.txt' as CSV data.  Size is 784 x 896.
[INFO ] Performing leave-one-out cross validation.
[INFO ] 1 leaf nodes in the tree using full dataset; minimum alpha: 1.79769e+308.
[INFO ] 1 trees in the sequence; maximum alpha: 0.
[INFO ] Optimal alpha: -1.
[INFO ] 1 leaf nodes in the optimally pruned tree; optimal alpha: -1.79769e+308.
[INFO ] Saving raw ASCII formatted data to 'aTrainEst.txt'.
[INFO ] Loading '5vs2Test.txt' as CSV data.  Size is 784 x 1536.
[INFO ] Saving raw ASCII formatted data to 'aTestEst.txt'.
[INFO ] 
[INFO ] Execution parameters:
[INFO ]   folds: 0
[INFO ]   help: false
[INFO ]   info: ""
[INFO ]   input_model_file: ""
[INFO ]   max_leaf_size: 10
[INFO ]   min_leaf_size: 5
[INFO ]   output_model_file: aOutput.txt
[INFO ]   test_file: 5vs2Test.txt
[INFO ]   test_set_estimates_file: aTestEst.txt
[INFO ]   training_file: 5vs2Train1.txt
[INFO ]   training_set_estimates_file: aTrainEst.txt
[INFO ]   verbose: true
[INFO ]   version: false
[INFO ]   vi_file: ""
[INFO ] 
[INFO ] Program timers:
[INFO ]   cross_validation: 12.433051s
[INFO ]   det_estimation_time: 0.001443s
[INFO ]   det_test_set_estimation: 0.002492s
[INFO ]   det_training: 12.465670s
[INFO ]   loading_data: 1.454027s
[INFO ]   saving_data: 0.002742s
[INFO ]   total_time: 13.933760s


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https://github.com/mlpack/mlpack/issues/515#issuecomment-180020855
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