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IJCAI-18 阿里妈妈搜索广告转化预测复赛第94名方案

感谢wzb同学倾情相助!

赛题以阿里巴巴海量真实交易数据为背景,通过构建预测模型预估用户的购买意向
方案以数据清洗、特征提取、模型训练、模型融合的步骤进行,最终复赛排名94/5204
1_load_data:数据读入,简单的预处理
2_feature_extract:特征提取,包括一些统计特征和组合特征,将结果写入中间文件
3_gen_train_data:将中间文件合并成最终的训练测试数据
4_lightGBM_test:构建LGB单模型预测
5_stacking_lr:比赛后期进行模型stacking时使用的lr模型,由于lr模型要对特征进行ont-hot处理,故单独列出
6_stacking_modle:使用LGB,XGB和RF模型的stacking
7_stacking_2nd:第二层stacking
8_logloss_reverse:均值平滑
bayes_smoothing:贝叶斯平滑
my_utils:常用函数的封装
vector_method:对多值特征的向量化处理(线上成绩一般,最后未使用)

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