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arXiv 2008.03797cs.IR
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推荐系统的部分合成数据:预测性能和偏好隐藏

Partially Synthetic Data for Recommender Systems: Prediction Performance and Preference Hiding

Manel Slokom, Martha Larson, Alan Hanjalic

摘要:

本文展示了潜在的统计披露控制,用于保护数据的训练推荐系统。具体来说,我们使用一种合成数据生成方法来隐藏用户项矩阵中的特定信息。我们对原始数据应用一个转换,它改变了一些值,但保留了其他值。其结果是一个部分合成数据集,可用于推荐,但包含有关个人用户偏好的较少具体信息。合成数据具有对公司有用的潜力,这些公司有兴趣发布数据以允许外部方开发新的推荐算法,即,在推荐系统挑战的情况下,还降低了与数据盗用相关联的风险。我们的实验运行一组推荐系统算法对我们的部分合成数据集以及原始数据。结果表明,算法在部分合成数据上的相对性能反映了在原始数据上的相对性能。进一步的分析表明,原始数据的属性在合成下被保留,但对于某些示例,原始数据中可访问的属性隐藏在合成数据中。

英文摘要:

This paper demonstrates the potential of statistical disclosure control for protecting the data used to train recommender systems. Specifically, we use a synthetic data generation approach to hide specific information in the user-item matrix. We apply a transformation to the original data that changes some values, but leaves others the same. The result is a partially synthetic data set that can be used for recommendation but contains less specific information about individual user preferences. Synthetic data has the potential to be useful for companies, who are interested in releasing data to allow outside parties to develop new recommender algorithms, i.e., in the case of a recommender system challenge, and also reducing the risks associated with data misappropriation. Our experiments run a set of recommender system algorithms on our partially synthetic data sets as well as on the original data. The results show that the relative performance of the algorithms on the partially synthetic data reflects the relative performance on the original data. Further analysis demonstrates that properties of the original data are preserved under synthesis, but that for certain examples of attributes accessible in the original data are hidden in the synthesized data.

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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