Comments (5)
您好,这是因为NA标签代表的是“不是事件”,而不是一个定义良好的语义类。它跟其他的标签是不同的,比如说将一个NA数据成功预测为一个NA数据是不算在true positive结果里的,因此这里loss采用的是错误分类为其他类别的概率平均数。
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作者您好,是否可以认为对不可信集合中的NA事件,如果标注为NA,其实标注结果应该是正确的,因此计算Generator的loss时采用其他事件的平均值。
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您好,没有明白什么叫做“其实标注结果应该是正确的”?
我再详细解释一下,如果我们把NA当作一个与其他类别一样的标签来计算,训练目标(最大化分类为NA的概率)会要求所有NA的数据的表示向量与NA这个类别的表示向量相近。但这是不合理的,因为NA的数据并没有共性,没有一致的语义。而别的类别是有一致的语义的,比如所有Attack类型的数据都表达了攻击事件的发生。因此这里的训练目标是“最小化分类为正常类别的概率”,即只要求它们跟正常类别的数据表示相远即可,不要求NA数据之间互相相似。
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哦哦,明白了,感谢您的回复!
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您好,那公式9右边不是为1的平均数吗,分类为NA的概率是1除(标签数-1)吗
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Related Issues (13)
- 您好 HOT 1
- Dscore_G参数写错了吧 HOT 1
- 关于数据划分 HOT 2
- How to identify the candidate trigger on the original training data ? HOT 2
- 是否抽取事件论元
- 关于论文中Generator的一些问题请教 HOT 1
- 对作者的评测代码有一点疑问
- dataprocess HOT 1
- DMCNN HOT 1
- 关于数据event的有无的问题 HOT 1
- 关于远程监督方面的问题 HOT 1
- 如何划分`TrainA_conf`和`TrainA_unconf` HOT 1
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