Competitors and Surrogates

It should be noted that when selecting splits, classification and regression trees may track the competitive splits at each decision point along the way. A competitive split is one that results in nearly as pure a node as the chosen split. Classification and regression trees may also keep track of surrogate variables. Use of a surrogate variable at a given split results in a similar node impurity measure (as would a competitor) but also mimics the chosen split itself in terms of which and how many observations go which way in the split.

Project Earth Conservation

Project Earth Conservation

Get All The Support And Guidance You Need To Be A Success At Helping Save The Earth. This Book Is One Of The Most Valuable Resources In The World When It Comes To How To Recycle to Create a Better Future for Our Children.

Get My Free Ebook


Post a comment