Clustering of time-course gene expression profiles using normal mixture models with AR(1) random effects

Details Clustering of time-course gene expression profiles using normal mixture models with AR(1) random effects Clustering of time-course gene expression profiles using normal mixture models with AR(1) random effects

2011-09-22

arxiv.org/abs/1109.4764v1

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Time-course gene expression data such as yeast cell cycle data may be periodically expressed. To cluster such data, currently used Fourier series approximations of periodic gene expressions have been found not to be sufficiently adequate to model the complexity of the time-course data, partly due to their ignoring the dependence between the expression measurements over time and the correlation among gene expression profiles. We further investigate the advantages and limitations of available models in the literature and propose a new mixture model with AR(1) random effects for the clustering of time-course gene-expression profiles. Some simulations and real examples are given to demonstrate the usefulness of the proposed models.

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