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jackguagua avatar jackguagua commented on May 13, 2024

主要看你target的选择,如果是分类问题,dt的output会返回正负样本的的概率,你可以用来排序

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liujian329 avatar liujian329 commented on May 13, 2024

主要看你target的选择,如果是分类问题,dt的output会返回正负样本的的概率,你可以用来排序

DeepFM有三个网络('linear', 'fm_nets', 'dnn_nets'),但是输出为[[4.0071368e-01 5.9928632e-01], [9.9921107e-01 7.8889728e-04]]类似的矩阵,请问这个值是哪两个网络的输出?谢谢。

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liujian329 avatar liujian329 commented on May 13, 2024

主要看你target的选择,如果是分类问题,dt的output会返回正负样本的的概率,你可以用来排序

返回正负样本的概率用加权平均值还是逻辑回归映射到<0,1>区间,进行分数排序?选取最高进行topN排序

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jackguagua avatar jackguagua commented on May 13, 2024

输出的二维向量分别是0,1的概率。这是三个网络add之后的输出,具体网络架构方面可以参考DeepFM的paper https://arxiv.org/pdf/1804.04950.pdf

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liujian329 avatar liujian329 commented on May 13, 2024

输出的二维向量分别是0,1的概率。这是三个网络add之后的输出,具体网络架构方面可以参考DeepFM的paper https://arxiv.org/pdf/1804.04950.pdf

那简单的说做召回或者排序就是把值为1的概率最大的进行再排序,选择最大概率的input,进行TopN?

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jackguagua avatar jackguagua commented on May 13, 2024

可以这么使用

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liujian329 avatar liujian329 commented on May 13, 2024

输出的二维向量分别是0,1的概率。这是三个网络add之后的输出,具体网络架构方面可以参考DeepFM的paper https://arxiv.org/pdf/1804.04950.pdf

那简单的说做召回或者排序就是把值为1的概率最大的进行再排序,选择最大概率的input,进行TopN?

image
论文中看到了sigmoid的预测值函数,没有看到正负样本的输出?

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