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• W3099591208 abstract "Abstract Background Many computational methods have been developed recently to analyze single-cell RNA-seq (scRNA-seq) data. Several benchmark studies have compared these methods on their ability for dimensionality reduction, clustering or differential analysis, often relying on default parameters. Yet given the biological diversity of scRNA-seq datasets, parameter tuning might be essential for the optimal usage of methods, and determining how to tune parameters remains an unmet need. Results Here, we propose a benchmark to assess the performance of five methods, systematically varying their tunable parameters, for dimension reduction of scRNA-seq data, a common first step to many downstream applications such as cell type identification or trajectory inference. We run a total of 1.5 million experiments to assess the influence of parameter changes on the performance of each method, and propose two strategies to automatically tune parameters for methods that need it. Conclusions We find that principal component analysis (PCA)-based methods like scran and Seurat are competitive with default parameters but do not benefit much from parameter tuning, while more complex models like ZinbWave, DCA and scVI can reach better performance but after parameter tuning." @default.
• W3099591208 created "2020-11-23" @default.
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• W3099591208 date "2020-04-28" @default.
• W3099591208 modified "2023-09-25" @default.
• W3099591208 title "Tuning parameters of dimensionality reduction methods for single-cell RNA-seq analysis" @default.
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• W3099591208 doi "https://doi.org/10.1101/2020.04.27.064816" @default.
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