Ecommerce Coursework

Group Assignment 2 (Research)

Class 2 Group 2

Repurchase or Non-repurchase Classification Based on Stacked Generalization

Data set can be found from: https://tianchi.aliyun.com/competition/entrance/231576/information

Performance

We submit the prediction through the account named "我爱电子商务课", the performance is as follows:

AUC (online)	rank
0.623210	307/3000

Future improvement

• Focus on feature engineering, try using some tricks like rank Gauss method, which may increase 0.02.
• Instead of using basic classifiers, try using LightGBM, XGBoost, or Catboost to ensemble, which may increase 0.002.
• Use T-SNE to visualize the effectiveness of sampling instead of PCA to perform better dimensionality reduction.