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- W2610574750 abstract "Abstract Transcriptome-wide time series expression profiling is used to characterize the cellular response to environmental perturbations. The first step to analyzing transcriptional response data is often to cluster genes with similar responses. Here, we present a nonparametric model-based method, Dirichlet process Gaussian process mixture model (DPGP), which jointly models cluster number with a Dirichlet process and temporal dependencies with Gaussian processes. We demonstrate the accuracy of DPGP in comparison with state-of-the-art approaches using hundreds of simulated data sets. To further test our method, we apply DPGP to published microarray data from a microbial model organism exposed to stress and to novel RNA-seq data from a human cell line exposed to the glucocorticoid dexamethasone. We validate our clusters by examining local transcription factor binding and histone modifications. Our results demonstrate that jointly modeling cluster number and temporal dependencies can reveal novel regulatory mechanisms. DPGP software is freely available online at https://github.com/PrincetonUniversity/DP_GP_cluster ." @default.
- W2610574750 created "2017-05-12" @default.
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- W2610574750 date "2017-04-26" @default.
- W2610574750 modified "2023-09-23" @default.
- W2610574750 title "Clustering gene expression time series data using an infinite Gaussian process mixture model" @default.
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- W2610574750 doi "https://doi.org/10.1101/131151" @default.
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