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Table 1 Correlation characteristics of H3K4me1/me2/me3 data sets for protein-coding and non-coding genes based on read-enrichment profiles and on their functional principal components 1-5

From: Uncovering correlated variability in epigenomic datasets using the Karhunen-Loeve transform

Group of genes

Type of correlation

me1 vs. me2

me1 vs. me3

me2 vs. me3

Protein coding

Ordinary correlation

0.50

0.11

0.63

 

Maximum correlation of ξ

0.55 (1,2)

0.72 (1,3)

0.86 (1,1)

 

(component numbers),

0.27

0.14

0.75

 

corresponding correlation of η

   
 

Maximum correlation of η

0.64 (1,1)

0.35 (3,3)

0.75 (1,1)

 

(component numbers),

0.22

-0.37

0.86

 

corresponding correlation of ξ

   
 

Significant pairwise correlations

590

203

646

Non-coding

Ordinary correlation

0.48

0.15

0.65

 

Maximum correlation of ξ

0.86 (1,1)

0.76 (1,1)

0.96 (1,1)

 

(component numbers),

0.64

0.36

0.82

 

corresponding correlation of η

   
 

Maximum correlation of η

0.64 (1,1)

0.36 (1,1)

0.82 (1,1)

 

(component numbers),

0.86

0.76

0.96

 

corresponding correlation of ξ

   
 

Significant pairwise correlations

529

197

615