Random-Walk Based Approximate k-Nearest Neighbors Algorithm for Diffusion State Distance
Random-Walk Based Approximate k-Nearest Neighbors Algorithm for Diffusion State Distance
复制标题
基于随机游走的扩散状态距离近似 k 最近邻算法
DOI:
10.1007/978-3-030-97549-4_1
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Wu, K.
中科院分区:
文献类型:
--
作者:
Cowen, L.;Hu, X.;Lin, J.;Shen, Y.;Wu, K.
Diffusion State Distance (DSD) is a data-dependent metric that compares data points using a data-driven diffusion process and provides a powerful tool for learning the underlying structure of high-dimensional data. While finding the exact nearest neighbors in the DSD metric is computationally expensive, in this paper, we propose a new random-walk based algorithm that empirically finds approximatek-nearest neighbors accurately in an efficient manner. Numerical results for real-world protein-protein interaction networks are presented to illustrate the efficiency and robustness of the proposed algorithm. The set of approximatek-nearest neighbors performs well when used to predict proteins’ functional labels.