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arXiv 2402.09755q-bio.GNcs.ITmath.IT
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基于scRNA-Seq数据零值识别的数据平滑填充方法

Data Smoothing Filling Method based on ScRNA-Seq Data Zero-Value Identification

Linfeng Jiang, Yuan Zhu

AI总结:

针对scRNA-seq数据中的dropout零值问题,提出SFAG方法,利用图正则化保留高维流形信息并挖掘基因与细胞关系,通过平均聚类结果填充技术零值,有效改善了下游分析与细胞轨迹重建。

摘要:

单细胞RNA测序(scRNA-seq)以单细胞分辨率测定RNA表达。它为研究细胞的免疫、调控及其他生命活动提供了强大工具。然而,受测序技术的限制,scRNA-seq数据表现出稀疏性,包含缺失的基因值,即零值,称为dropout。因此,在分析scRNA-seq数据前必须对缺失值进行填充。然而,现有的填充计算方法往往只关注技术零值的识别,或仅基于细胞相似性填充所有零值。本研究提出一种新方法(SFAG),利用图正则化技术重建基因表达关系矩阵,以保留数据的高维流形信息,并挖掘数据中基因与细胞间的关系,随后使用平均聚类结果的方法对已识别的技术零值进行填充。实验结果表明,SFAG能帮助改善下游分析并重建细胞轨迹。

英文摘要:

Single-cell RNA sequencing (scRNA-seq) determines RNA expression at single-cell resolution. It provides a powerful tool for studying immunity, regulation, and other life activities of cells. However, due to the limitations of the sequencing technique, the scRNA-seq data are represented with sparsity, whichcontains missing gene values, i.e., zero values, called dropout. Therefore, it is necessary to impute missing values before analyzing scRNA-seq data. However, existing imputation computation methods often only focus on the identification of technical zeros or imputing all zeros based on cell similarity. This study proposes a new method (SFAG) to reconstruct the gene expression relationship matrix by usinggraph regularization technology to preserve the high-dimensional manifold information of the data, andto mine the relationship between genes and cells in the data, and then uses a method of averaging the clustering results to fill in the identified technical zeros. Experimental results show that SFAGcan helpimprove downstream analysis and reconstruct cell trajectory

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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