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linlih authored and gitbook-bot committed Feb 28, 2020
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| 个体学习器间**存在强依赖**关系,必须串行生成的**序列化**方法 | Boosting |
| 个体学习器间**不存在强依赖**关系,可同时生成的**并行化**方法 | Bagging、随机森林 |

## Boosting

Boosting算法的核心思想是:从初始训练集中训练得到一个基学习器,然后根据基学习器对于样本预测的结果,让判别错误的样本在后续的训练中得到更多的关注。然后再基于调整过的样本训练下一个基学习器。反复这个过程,直到训练好T个学习器,最终对这些学习器进行加权结合。

下面我们看Boosting中最著名的算法代表:AdaBoost














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