Partition Decoupling for Multi-gene Analysis of Gene Expression Profiling Data

Details Partition Decoupling for Multi-gene Analysis of Gene Expression Profiling Data Partition Decoupling for Multi-gene Analysis of Gene Expression Profiling Data

2010-02-21

arxiv.org/abs/1002.3946v2

Biology

Quantitative Biology

Quantitative Methods

Revised

Scientific paper

We present the extention and application of a new unsupervised statistical learning technique--the Partition Decoupling Method--to gene expression data. Because it has the ability to reveal non-linear and non-convex geometries present in the data, the PDM is an improvement over typical gene expression analysis algorithms, permitting a multi-gene analysis that can reveal phenotypic differences even when the individual genes do not exhibit differential expression. Here, we apply the PDM to publicly-available gene expression data sets, and demonstrate that we are able to identify cell types and treatments with higher accuracy than is obtained through other approaches. By applying it in a pathway-by-pathway fashion, we demonstrate how the PDM may be used to find sets of mechanistically-related genes that discriminate phenotypes.

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