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competition's Introduction

这是我自己的一些比赛实战代码以及优化过程。如果大家有更好的想法,欢迎提出来!共同进步。


一点比赛小经验:

1. XGBoost的效果一般用起来都不错;

2. 有时候GDBT的效果会比XGBoost好,所以当你感觉XGBoost的预测结果不是很好的时候,用一下GDBT往往会打开一个新世界的大门;

3. GDBT和XGBoost两个模型的融合可以考虑一下,一般会有一定的提升。融合模型最简单的方法就是取预测结果的加权值和,并且一般预测结果好的模型对应的权重大一些,权重为0.65左右;

4. 注意观察数据集,如果从特征可以看出两个明显不同的分类,可以考虑分开训练,最后再把预测的结果合并起来即可;

5. 出生日期数据可以考虑转化为年龄来处理

6. 身高、体重可以分段处理,或者进行归一化。

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