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arXiv 2102.09504math.STcs.LGstat.MLstat.TH
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线性回归的迁移学习:增益的统计检验

Transfer Learning for Linear Regression: a Statistical Test of Gain

EDF R&D(EDF研发中心);Aix-Marseille Université(艾克斯-马赛大学);Université Lumière Lyon 2(里昂第二大学);Université Paris-Est Marne-la-Vallée(巴黎东大学马恩河谷校区)

David Obst, Badih Ghattas, Jairo Cugliari, Georges Oppenheim, Sandra Claudel, Yannig Goude

摘要:

迁移学习,也被称为知识迁移,旨在将知识从源数据集重用到类似的目标数据集。虽然许多实证研究说明了迁移学习的好处,但很少有理论结果,特别是对于回归问题。本文提出了一个线性模型参数传递问题的理论框架。它示出了一个新的输入向量$x$的传输质量取决于其表示在一个本征基涉及的参数的问题。此外,构建统计检验来预测微调模型对于未观察样本的预测二次风险是否低于基础目标模型。在合成数据和实际用电数据上说明了测试的有效性。

英文摘要:

Transfer learning, also referred as knowledge transfer, aims at reusing knowledge from a source dataset to a similar target one. While many empirical studies illustrate the benefits of transfer learning, few theoretical results are established especially for regression problems. In this paper a theoretical framework for the problem of parameter transfer for the linear model is proposed. It is shown that the quality of transfer for a new input vector $x$ depends on its representation in an eigenbasis involving the parameters of the problem. Furthermore a statistical test is constructed to predict whether a fine-tuned model has a lower prediction quadratic risk than the base target model for an unobserved sample. Efficiency of the test is illustrated on synthetic data as well as real electricity consumption 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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