A comprehensive evaluation of module detection methods for gene expression data.
A comprehensive evaluation of module detection methods for gene expression data.
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DOI:
10.1038/s41467-018-03424-4
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发表时间:
2018-03-15
影响因子:
16.6
通讯作者:
Saeys Y
中科院分区:
文献类型:
--
作者:
Saelens W;Cannoodt R;Saeys Y
A critical step in the analysis of large genome-wide gene expression datasets is the use of module detection methods to group genes into co-expression modules. Because of limitations of classical clustering methods, numerous alternative module detection methods have been proposed, which improve upon clustering by handling co-expression in only a subset of samples, modelling the regulatory network, and/or allowing overlap between modules. In this study we use known regulatory networks to do a comprehensive and robust evaluation of these different methods. Overall, decomposition methods outperform all other strategies, while we do not find a clear advantage of biclustering and network inference-based approaches on large gene expression datasets. Using our evaluation workflow, we also investigate several practical aspects of module detection, such as parameter estimation and the use of alternative similarity measures, and conclude with recommendations for the further development of these methods. Modules composed of groups of genes with similar expression profiles tend to be functionally related and co-regulated. Here, Saelens et al evaluate the performance of 42 computational methods and provide practical guidelines for module detection in gene expression data.
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