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Machine learning algorithms build a model of the training data. The term "machine learning" is vaguely defined; it includes what is also called statistical learning, reinforcement learning, unsupervised learning, etc. ALWAYS ADD A MORE SPECIFIC TAG.

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why does random forest trees need to be deeper than gradient boosting trees

in Elements of Statistical Learning chapter 15. Random Forest, we see authors' note on RF v.s. GBT. One of them is that at 1000 terms, GBM depth 4 has smaller error than RF depth 6. Also we notice RF …
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