KLFDAPC: a supervised machine learning approach for spatial genetic structure analysis.
KLFDAPC: a supervised machine learning approach for spatial genetic structure analysis.
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DOI:
10.1093/bib/bbac202
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发表时间:
2022-07-18
影响因子:
9.5
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中科院分区:
文献类型:
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Geographic patterns of human genetic variation provide important insights into human evolution and disease. A commonly used tool to detect and describe them is principal component analysis (PCA) or the supervised linear discriminant analysis of principal components (DAPC). However, genetic features produced from both approaches could fail to correctly characterize population structure for complex scenarios involving admixture. In this study, we introduce Kernel Local Fisher Discriminant Analysis of Principal Components (KLFDAPC), a supervised non-linear approach for inferring individual geographic genetic structure that could rectify the limitations of these approaches by preserving the multimodal space of samples. We tested the power of KLFDAPC to infer population structure and to predict individual geographic origin using neural networks. Simulation results showed that KLFDAPC has higher discriminatory power than PCA and DAPC. The application of our method to empirical European and East Asian genome-wide genetic datasets indicated that the first two reduced features of KLFDAPC correctly recapitulated the geography of individuals and significantly improved the accuracy of predicting individual geographic origin when compared to PCA and DAPC. Therefore, KLFDAPC can be useful for geographic ancestry inference, design of genome scans and correction for spatial stratification in GWAS that link genes to adaptation or disease susceptibility.
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影响因子:
4
作者:
Nishant, Koodali T.;Singh, Nadia D.;Alani, Eric
通讯作者:
Alani, Eric
影响因子:
9.8
作者:
Galinsky, Kevin J.;Loh, Po-Ru;Price, Alkes L.
通讯作者:
Price, Alkes L.
DOI:
10.1534/g3.114.014274
发表时间:
2014-11-03
期刊:
G3 (Bethesda, Md.)
影响因子:
--
作者:
Yang WY;Platt A;Chiang CW;Eskin E;Novembre J;Pasaniuc B
通讯作者:
Pasaniuc B
影响因子:
4.3
作者:
Bush WS;Moore JH
通讯作者:
Moore JH
影响因子:
7.8
作者:
HORNIK, K;STINCHCOMBE, M;WHITE, H
通讯作者:
WHITE, H