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arXiv 1104.0729cs.LGstat.ML
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特征缺失数据的在线批量学习算法

Online and Batch Learning Algorithms for Data with Missing Features

UC Berkeley(加州大学伯克利分校);QUT(昆士兰科技大学)

Afshin Rostamizadeh, Alekh Agarwal, Peter Bartlett

摘要:

我们引入了新的在线和批处理算法,这些算法对具有缺失特征的数据具有鲁棒性,这种情况在许多实际应用中都会出现。在在线设置中,我们允许比较假设作为在任何给定回合上观察到的特征子集的函数而变化,扩展了比较假设始终固定的标准设置。在批量设置中,我们提出了一个非凸问题的凸关系,以联合估计一个插补函数,用于填充缺失特征的值,以及分类假设。我们证明了遗憾的界限,在网上设置和Rademacher复杂性界限的批次i.i.d.设置.该算法在几个UCI数据集上进行了测试,显示出优于基线的性能。

英文摘要:

We introduce new online and batch algorithms that are robust to data with missing features, a situation that arises in many practical applications. In the online setup, we allow for the comparison hypothesis to change as a function of the subset of features that is observed on any given round, extending the standard setting where the comparison hypothesis is fixed throughout. In the batch setup, we present a convex relation of a non-convex problem to jointly estimate an imputation function, used to fill in the values of missing features, along with the classification hypothesis. We prove regret bounds in the online setting and Rademacher complexity bounds for the batch i.i.d. setting. The algorithms are tested on several UCI datasets, showing superior performance over baselines.

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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