GPseudoRank: A permutation sampler for single cell orderings

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Abstract

A number of pseudotime methods have provided point estimates of the ordering of cells for scRNA-seq data. A still limited number of methods also model the uncertainty of the pseudotime estimate. However, there is still a need for a method to sample from complicated and multimodal distributions of orders, and to estimate changes in the amount of the uncertainty of the order during the course of a biological development, as this can support the selection of suitable cells for the clustering of genes or for network inference. Results: In applications to scRNA-seq data we demonstrate the potential of GPseudoRank to sample from complex and multi-modal posterior distributions and to identify phases of lower and higher pseudotime uncertainty during a biological process. GPseudoRank also correctly identifies cells precocious in their antiviral response and links uncertainty in the ordering to metastable states. A variant of the method extends the advantages of Bayesian modellingand MCMC to large droplet-based scRNA-seq datasets.

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APA

Strauß, M. E., Reid, J. E., & Wernisch, L. (2019). GPseudoRank: A permutation sampler for single cell orderings. Bioinformatics, 35(4), 611–618. https://doi.org/10.1093/bioinformatics/bty664

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