翻訳と辞書 Words near each other ・ Logos Live ・ Logos Panic ・ Logisticus plicicollis ・ Logisticus proboscideus ・ Logisticus quentini ・ Logisticus rostratus ・ Logisticus sesquivittatus ・ Logisticus simplex ・ Logisticus spinipennis ・ Logisticus suturalis ・ Logisticus villiersi ・ Logit ・ Logit analysis in marketing ・ Logit-normal distribution ・ LogiTag ・ LogitBoost ・ Logitech ・ Logitech Driving Force GT ・ Logitech G19 ・ Logitech G25 ・ Logitech G27 ・ Logitech Harmony ・ Logitech Media Server ・ Logitech Thunderpad Digital ・ Logitech Unifying receiver ・ Logix Group ・ Logiya River ・ Logjam (computer security) ・ Logjam Lake ・ Logje Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク LogitBoost ： ウィキペディア英語版 LogitBoost In machine learning and computational learning theory, LogitBoost is a boosting algorithm formulated by Jerome Friedman, Trevor Hastie, and Robert Tibshirani. The original paper〔Jerome Friedman, Trevor Hastie and Robert Tibshirani. Additive logistic regression: a statistical view of boosting. Annals of Statistics 28(2), 2000. 337–407. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.51.9525〕 casts the AdaBoost algorithm into a statistical framework. Specifically, if one considers AdaBoost as a generalized additive model and then applies the cost functional of logistic regression, one can derive the LogitBoost algorithm. ==Minimizing the LogitBoost cost function== LogitBoost can be seen as a convex optimization. Specifically, given that we seek an additive model of the form :$f\; =\; \backslash sum\_t\; \backslash alpha\_t\; h\_t$ the LogitBoost algorithm minimizes the logistic loss: :$\backslash sum\_i\; \backslash log\backslash left(\; 1\; +\; e^\backslash right)$ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「LogitBoost」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.