BORN AGAIN TREES

Tree predictors such as CART or C4.5 are often not as accurate as neural nets or use of multiple trees. But these latter methods lead to predictors whose structure is difficult to understand, whereas trees have a universal simplicity. Because of this, it is appealing to try and find tree representations of more complex predictors. We study tree representers of multiple tree predictors. These representers are larger, more stable and more accurate than trees grown the usual way. For this reason, we call them "born again" trees.