[BioC] superpc - 'group' and 'Cox score'

[Liu, Xin]

Dear all,

1)	When we use the package superpc, we run the code got from the tutorial. However, we got the following: 
	"Warning message: 
	Missing values for 'group' in: rowsum.default(t(x), oo)"
	What did we miss?

2)	 'Cox score' is very important in this package. However, I cann't find lots of information about it from web though 	there is lots for 'Cox regression'. Is there any other name for 'Cox score'? What is it?

Thanks a lot!

Xin LIU

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