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KDD2022 | 什么特征进行交互才是有效的?
2022-07-04 21:33:00 【智源社区】
论文标题:
Detecting Arbitrary Order Beneficial Feature Interactions for Recommender Systems
论文链接:
https://arxiv.org/pdf/2206.13764.pdf
代码:
https://github.com/ruizhangai/HIRS_Hypergraph_Infomax_Recommender_System.git
本文主要针对推荐系统中的特征交互而提出的相关方法,如果将所有可能的特征都进行交互,那消耗是很大的,本文提出HIRS用于直接生成有益特征交互。生成的特征交互的数量可以指定为远小于所有可能的交互的数量,因此模型运行时间更短。
本文采用超图和互信息的相关概念来自动的生成有效的特征交互。以样本中的特征为节点,如果特征之间存在交互则这些特征节点之间就存在超边。
首先,得到样本后,以样本特征为节点,映射到相应的embedding,边集为空 利用节点embedding预测得到超边集合 利用节点和超边进行推荐系统结果的预测 在超边预测的过程中需要考虑一些点,比如产生的交互要是有益有效的,产生的超边矩阵需要时0,1稀疏的,那么针对这些问题,作者基于互信息进行了相应的改进。
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