arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.06716cs.IR
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推荐系统中的因果学习机会:基础、估计、预测和挑战

On the Opportunity of Causal Learning in Recommendation Systems: Foundation, Estimation, Prediction and Challenges

Peng Wu, Haoxuan Li, Yuhao Deng, Wenjie Hu, Quanyu Dai, Zhenhua Dong, Jie Sun, Rui Zhang, Xiao-Hua Zhou

摘要:

最近,基于因果推理的推荐系统(RS)在工业界得到了广泛的关注,以及在许多预测和去偏任务中的最新表现。然而,至今尚未建立统一的因果分析框架。许多基于因果关系的预测和去偏研究很少讨论各种偏差的因果解释和相应的因果假设的合理性。在本文中,我们首先提供了一个正式的因果分析框架来调查和统一现有的基于因果关系的推荐方法,它可以适应不同的场景在RS。然后,我们提出了一个新的分类,并给出正式的因果关系定义的各种偏见在RS的角度违反因果分析中所采用的假设。最后,对RS中的去偏和预测任务进行了形式化描述,并对基于统计和机器学习的因果估计方法进行了总结,以期为因果RS领域提供新的研究机会和视角。

英文摘要:

Recently, recommender system (RS) based on causal inference has gained much attention in the industrial community, as well as the states of the art performance in many prediction and debiasing tasks. Nevertheless, a unified causal analysis framework has not been established yet. Many causal-based prediction and debiasing studies rarely discuss the causal interpretation of various biases and the rationality of the corresponding causal assumptions. In this paper, we first provide a formal causal analysis framework to survey and unify the existing causal-inspired recommendation methods, which can accommodate different scenarios in RS. Then we propose a new taxonomy and give formal causal definitions of various biases in RS from the perspective of violating the assumptions adopted in causal analysis. Finally, we formalize many debiasing and prediction tasks in RS, and summarize the statistical and machine learning-based causal estimation methods, expecting to provide new research opportunities and perspectives to the causal RS community.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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