Re: [aroma.affymetrix] Adjusting for sample-specific median signal prior to segmentation

2015-05-20 Thread Henrik Bengtsson
[Reposting from an approved email address] Hi Benilton, The locus level (total) CN ratios passed to CBS is simply the log2(T/R), where 'T' is the total CN signal (no ratio) for sample T ("tumor" say) and 'R' is ditto for the reference used to standardize (aka "normalize" by some books). Typical

[aroma.affymetrix] Adjusting for sample-specific median signal prior to segmentation

2015-05-19 Thread Benilton Carvalho
Hi everyone, if you check the image at: https://dl.dropboxusercontent.com/u/83643/Screen%20Shot%202015-05-20%20at%201.50.50%20AM.png you'll see segmentation results for a few human samples across multiple chromosomes. This was achieved via CBS (under the aroma framework, therefore CbsModel).