busesese / negative-sample Goto Github PK
View Code? Open in Web Editor NEWrandom negative sample and weight negative sample based on 《Sample Optimization For Display Advertising》
License: MIT License
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采样代码问题
您好，阅读您的代码，有以下几个问题不清晰:
1.根据您提供的数据集，item具体的含义是指什么，曝光广告的id嘛，
2.加权随机负采样生成的文件，只有item,target两列是新的，其他feature都保持一致，为什么呢
3.广告数据本身就是严重正负样本比例不平衡，用这种方式生成的负样本不是更加不平衡了嘛？
4.请问在论文中第二种采样方式，Real-Negative Subsampling具体代码您实现了嘛
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