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Chapter 17-18 (Model comparison (change model (on the right most model are…
Chapter 17-18
Model comparison
panel allows the selection of two models from the leaderboard in addition to auto-selecting the top model, placed in the far left position
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perfect model would look like in a lift chart- right up along the left x-axis and then to the right along the upper bound of the chart
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ROC curve
is where several central measures of model success exist beyond the original optimization metric, logloss
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auc
is simply a matter of splitting the whole area into 100 boxes and keeping only those that are mostly or fully under the curve
Sample algorithm model
tree based algorithms
build on the logic of the decision- tree classifier, which is to repeatedly find the most predictive feature at that instance and plait it into two groups that are as homogenous as possible
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step 2 split the feature into two groups at the point of the feature where the two groups are as homogenous as possible
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