https://www.biendata.com/competition/jet/
reduce_mem 减小原始数据大小，并存储为feather格式
lightgbm:
feature + model_lgb 老特征
new_feature + new_model_lgb 新特征
new_feature_jet_level + new_model_jet_level 新特征jet_level样本
particlenet:
运行顺序 trans → trans1 → trans2 → trans3+train