生长缓慢的树木
Slow-Growing Trees
摘要:
随机森林的性能可以通过一棵缓慢生长的树(SGT)来匹配,SGT使用学习率来驯服CART的贪婪算法。SGT利用CART是迭代加权最小二乘过程的极端情况的观点。此外,一个统一的观点,提升树(BT)和随机森林(RF)。贪婪ML算法的结果可以通过“缓慢学习”或多样化来改善。SGT应用前者来估计单个深树,Booging(具有高学习率的装袋随机BT)使用后者与加性浅树。这棵树合奏四位一体(Booging,BT,SGT,RF)的性能进行评估模拟和真实的回归任务。
英文摘要:
Random Forest's performance can be matched by a single slow-growing tree (SGT), which uses a learning rate to tame CART's greedy algorithm. SGT exploits the view that CART is an extreme case of an iterative weighted least square procedure. Moreover, a unifying view of Boosted Trees (BT) and Random Forests (RF) is presented. Greedy ML algorithms' outcomes can be improved using either "slow learning" or diversification. SGT applies the former to estimate a single deep tree, and Booging (bagging stochastic BT with a high learning rate) uses the latter with additive shallow trees. The performance of this tree ensemble quaternity (Booging, BT, SGT, RF) is assessed on simulated and real regression tasks.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。