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arXiv 2201.10547cs.LGcs.AIcs.MA
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最优数据选择:一种在线分布式视角

Optimal Data Selection: An Online Distributed View

University of California, Berkeley(加州大学伯克利分校)

Mariel Werner, Anastasios Angelopoulos, Stephen Bates, Michael I. Jordan

AI总结:

针对海量冗余数据的通信、存储与标注难题,提出基于子模最大化的在线分布式数据选择算法,具备与离线方法相当的理论保证,在ImageNet和MNIST任务上性能优于随机选择5-20%。

摘要:

无处不在的数据带来便利的同时也伴随着难题:海量且大多冗余的数据集在通信、存储和标注方面存在负担。我们旨在从根本上解决这一问题,通过子模最大化仅收集有价值的数据并舍弃其余部分。具体而言,我们针对该问题的在线分布式版本开发了算法,其中数据选择在多个数据流上以非协调的方式进行。我们为算法设计了通用且灵活的核心选择例程,该例程在给定任意数据流、任意数据价值评估以及任意选择成本公式的情况下,能以最小内存提取数据流中价值最高的子集,其性能可达最优解的常数因子范围内。值得注意的是,我们的方法具备与离线对应方法相同的理论保证,并且据我们所知,是现有文献中首个为在线分布式子模优化提供保证的方法。最后,在ImageNet和MNIST的学习任务中,我们的选择方法比随机选择的性能高出5-20%。

英文摘要:

The blessing of ubiquitous data also comes with a curse: the communication, storage, and labeling of massive, mostly redundant datasets. We seek to solve this problem at its core, collecting only valuable data and throwing out the rest via submodular maximization. Specifically, we develop algorithms for the online and distributed version of the problem, where data selection occurs in an uncoordinated fashion across multiple data streams. We design a general and flexible core selection routine for our algorithms which, given any stream of data, any assessment of its value, and any formulation of its selection cost, extracts the most valuable subset of the stream up to a constant factor while using minimal memory. Notably, our methods have the same theoretical guarantees as their offline counterparts, and, as far as we know, provide the first guarantees for online distributed submodular optimization in the literature. Finally, in learning tasks on ImageNet and MNIST, we show that our selection methods outperform random selection by $5-20\%$.

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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