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• W4360943977 abstract "Advances in sequencing technology has led to the discovery of associations between the human microbiota and many diseases, conditions and traits. With the increasing availability of microbiome data, many statistical methods have been developed for studying these associations. The growing number of newly developed methods highlights the need for simple, rapid and reliable methods to simulate realistic microbiome data, which is essential for validating and evaluating the performance of these methods. However, generating realistic microbiome data is challenging due to the complex nature of microbiome data, which feature correlation between taxa, sparsity, overdispersion, and compositionality. Current methods for simulating microbiome data are deficient in their ability to capture these important features of microbiome data, or can require exorbitant computational time.We develop MIDAS ( MI crobiome DA ta S imulator), a fast and simple approach for simulating realistic microbiome data that reproduces the distributional and correlation structure of a template microbiome dataset. We demonstrate improved performance of MI-DAS relative to other existing methods using gut and vaginal data. MIDAS has three major advantages. First, MIDAS performs better in reproducing the distributional features of real data compared to other methods at both presence-absence level and relative-abundance level. MIDAS-simulated data are more similar to the template data than competing methods, as quantified using a variety of measures. Second, MIDAS makes no distributional assumption for the relative abundances, and thus can easily accommodate complex distributional features in real data. Third, MIDAS is computationally efficient and can be used to simulate large microbiome datasets.The R package MIDAS is available on GitHub at https://github.com/mengyu-he/MIDAS.Ni Zhao, Department of Biostatistics, Johns Hopkins University ( nzhao10@jhu.edu ).Supplementary data are available at Bioinformatics online." @default.
• W4360943977 created "2023-03-26" @default.
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• W4360943977 date "2023-03-25" @default.
• W4360943977 modified "2023-10-17" @default.
• W4360943977 title "MIDAS: a fast and simple simulator for realistic microbiome data" @default.
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• W4360943977 doi "https://doi.org/10.1101/2023.03.23.533996" @default.
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