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dcic-2023-solution's Introduction

DCIC-2023 科技金融应用:欺诈风险识别

  • A/B榜 0.890x 解决方案
  • B 榜排名 11/1594

方案介绍

  • 使用lgb树模型
  • 10折交叉验证,4个不同种子/划分

几个强特:

  • 借贷标记:0或1 (原数据有)
  • 退款标记:0或1(交易金额是否大于0):这个特征可以和借贷标记构建类似的强特
  • 基于借贷标记和退款标记构建转入次数、转出次数等
  • TF-IDF特征
  • 各种groupby

其它开源解决方案

比赛链接

https://www.dcic-china.com/competitions/10060/

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