arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2404.09459math.NAcs.NA
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用于低秩矩阵逼近的快速随机算法及其在一类数据集全局比较分析中的应用

Fast randomized algorithms for low-rank matrix approximations with applications in global comparative analysis of a class of data sets

Weiwei Xu, Weijie Shen, Wen Li, Weiguo Gao, Yingzhou Li

AI总结:

针对低秩数据矩阵的广义奇异值计算问题,提出一种先近似提取基再高效计算的随机算法,经理论分析与多数据集实验验证,该算法在保证比较分析精度的同时实现了最快运行速度。

摘要:

广义奇异值(GSVs)在比较分析中发挥着核心作用。在现实世界的比较分析数据中,两个数据矩阵通常都具有数值低秩特性。本文提出一种随机算法,先近似提取基,再高效计算GSVs。本文严格分析了基提取以及角距离、特征表达广义分数、广义归一化香农熵等比较分析量的准确性。该算法被应用于合成数据集和基因组规模表达数据集。与其他GSVs算法相比,该算法运行速度最快,同时在比较分析中保持了足够的精度。

英文摘要:

Generalized singular values (GSVs) play an essential role in the comparative analysis. In the real world data for comparative analysis, both data matrices are usually numerically low-rank. This paper proposes a randomized algorithm to first approximately extract bases and then calculate GSVs efficiently. The accuracy of both basis extration and comparative analysis quantities, angular distances, generalized fractions of the eigenexpression, and generalized normalized Shannon entropy, are rigursly analyzed. The proposed algorithm is applied to both synthetic data sets and the genome-scale expression data sets. Comparing to other GSVs algorithms, the proposed algorithm achieves the fastest runtime while preserving sufficient accuracy in comparative analysis.

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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