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arXiv 1602.02845stat.MLcs.LG
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在线主动保持线性回归

Online Active Linear Regression via Thresholding

Stanford University(斯坦福大学);University of Washington(华盛顿大学)

Carlos Riquelme, Ramesh Johari, Baosen Zhang

摘要:

我们考虑在线主动学习的问题,以收集数据进行回归建模。具体来说,我们考虑一个有限的实验预算的决策者必须有效地学习一个潜在的线性人口模型。我们的主要贡献是一种新的阈值为基础的算法选择最翔实的意见,我们的性能和基本的下限。我们扩展的算法和它的保证稀疏线性回归在高维设置。仿真表明,该算法是非常强大的:它提供了显着的好处,在现实世界的数据集,表现出高非线性和高维被动随机采样-显着降低均方误差和方差。

英文摘要:

We consider the problem of online active learning to collect data for regression modeling. Specifically, we consider a decision maker with a limited experimentation budget who must efficiently learn an underlying linear population model. Our main contribution is a novel threshold-based algorithm for selection of most informative observations; we characterize its performance and fundamental lower bounds. We extend the algorithm and its guarantees to sparse linear regression in high-dimensional settings. Simulations suggest the algorithm is remarkably robust: it provides significant benefits over passive random sampling in real-world datasets that exhibit high nonlinearity and high dimensionality --- significantly reducing both the mean and variance of the squared error.

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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