User: Qi.Zhang@astrazeneca.com

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13 years, 7 months ago
Joined:
16 years, 11 months ago
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q*******@astrazeneca.com

Posts by Qi.Zhang@astrazeneca.com

<prev • 6 results • page 1 of 1 • next >
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MLInterfaces
... Hi, I am trying to use svmB in MLInterfaces for my analysis, and results look very different from what I got using svm in GeneSpring. Does anyone here have experience with MLInterfaces, especially svmB? how the implementation of svm in MLInterfaces (or R) differ from that in GeneSpring? Thanks a ...
genespring mlinterfaces written 13.6 years ago by Qi.Zhang@astrazeneca.com60 • updated 13.6 years ago by Stephen Henderson1.0k
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Answer: A: background correction with cDNA array data
... Naomi, thanks for your reply. I do not intent to write my own mathod. I took the default option when read in the gpr file using read.GenePix, so I assume the background correction was done by "substraction". I remember it from somewhere that the "substraction" may introduce additional variance dep ...
written 14.0 years ago by Qi.Zhang@astrazeneca.com60
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Answer: A: background correction with cDNA array data
... Naomi, thanks for your reply. I do not intent to write my own mathod. I took the default option when read in the gpr file using read.GenePix, so I assume the background correction was done by "substraction". I remember it from somewhere that the "substraction" may introduce additional variance dep ...
written 14.0 years ago by Qi.Zhang@astrazeneca.com60
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background correction with cDNA array data
... Dear all, I have searched through the bioconductor ducument and this mailing list, but could not find a general guidance about how to correct background in cDNA array data. I have imported my data (GPR files from GenePix) using functions from marray. Now what are the available methods for backgro ...
marray written 14.0 years ago by Qi.Zhang@astrazeneca.com60 • updated 14.0 years ago by Giuseppe.Palermo@bo.infn.it10
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bioconductor vs dchip
... The help page of "expresso" mentions that the li and wong summary method will not get the same results as that from dChip. I would like to know how different or similar they are. Thanks a lot for your help. ...
written 16.4 years ago by Qi.Zhang@astrazeneca.com60 • updated 16.4 years ago by Rafael A. Irizarry2.3k
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new release date
... Hi, Could you please let me know the releasing date of version 2? I couldn't find it on your web site. Thanks. Qi Zhang Ph.D. ...
written 17.0 years ago by Qi.Zhang@astrazeneca.com60 • updated 17.0 years ago by Jeff Gentry3.9k

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