From: Philippe <ro...@eb...> - 2007-01-27 16:52:02
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Hello all, We just had a very productive meeting with folks from FDA and reviewed MAGE-TAB specifications. A use case put to us was how to represent the situation where one applies 2 different normalizations on overlapping subsets of raw data files. (raw datafiles 1,2,3 normalized using method A producing derived datafile dA, and raw datafiles 2,3,4 normalized using method B producing derived datafile dB) to report this case in MAGE tab, one would have to duplicate a set of columns related to normalization event. Source-Sample-Extract-LE-Hyb-Norm-Norm This seems not to be consistent with the basic mechanism of the sdrf whereby columns added on the right qualify all the columns on the left. The question here is the following: In such situation, is it the case of creating a second SDRF to report the second normalization event ? More generally, will MAGE-TAB support cover submissions with several SDRFs, possibly corresponding splitting on every 'Pivotal' element (Source, Sample, Extract, LE, Hyb...) Thanks Philippe |