User: Xiaowei Guan

gravatar for Xiaowei Guan
Xiaowei Guan90
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Last seen:
8 years, 6 months ago
Joined:
8 years, 10 months ago
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x****@case.edu

Posts by Xiaowei Guan

<prev • 9 results • page 1 of 1 • next >
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question about the aroma.affymetrix
... Dear Bioconductor, I have a question about how to derive the gene centric values for the probe set: When reading the paper I saw this description: "From the methods (Microarray Experiments): “Probes on all three platforms were aligned to a transcript database consisting of RefSeq (36.1) and comp ...
cdf written 8.5 years ago by Xiaowei Guan90
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question about PCA
... Dear Sir or Madam, I have a question about performing PCA method on the gene expression data. If I have a training dataset and I identified a smaller set of genes as biomarkers to predict case and control status.... What if I only select those genes from the validation dataset and make some predict ...
written 8.6 years ago by Xiaowei Guan90 • updated 8.6 years ago by amit mandal140
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how to merge gene expression and arrayCGH matched dataset?
... Dear Bioconductor, I have a question about how to get the matched gene expression and arrayCGH dataset together. Since there are multiple ID corresponding to each gene, what shall I do to merge them? Shall I get the gene-centric values for gene expression and arrayCGH first then merge them? Thanks ...
written 8.7 years ago by Xiaowei Guan90
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Answer: A: question about get a summary gene expression information from the probe set asso
... Thanks Jim. I will try the packages you suggested. Really appreciate your help. best, Xiaowei On Mon, Jan 3, 2011 at 1:00 PM, James W. MacDonald wrote: > Hi Xiaowei, > > > On 12/30/2010 12:55 PM, Xiaowei Guan wrote: > >> Dear Bioconudctor, >> >> I have this questi ...
written 8.8 years ago by Xiaowei Guan90
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question about get a summary gene expression information from the probe set associated with one specific gene
... Dear Bioconudctor, I have this question about how to compress the gene expression dataset from probe sets denoted to gene denoted values. The analysis has two simultaneous goals, first is to convert the probe sets to gene names. Second is to convert the probe sets values into just one summary gene ...
annotation probe convert assign written 8.8 years ago by Xiaowei Guan90
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how to simulate the microarray data set?
... Dear Sir or Madam, I have this question about simulation question..... How to simulate the gene expression data that will have different groups like tumor vs control..... how to capture the structure? best, Xiaowei [[alternative HTML version deleted]] ...
written 8.8 years ago by Xiaowei Guan90
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question about how to choose the probe value that corresponding to a gene
... Dear Bioconductor, I have a question about getting one to one probe to the gene. Usually, there are a probe set corresponding to just one gene. Which value shall we choose to give the gene? Another question is that what if we have ABCB1///ABCB4 in the annotation file, which gene should we use, is ...
probe written 8.8 years ago by Xiaowei Guan90
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Comment: C: question about R package to get gene centric values
... Thanks Paul, I will try that package. best, Xiaowei On Tue, Dec 21, 2010 at 7:21 AM, Paul Geeleher wrote: > If you're using affy arrays the different affy IDs correspond to > different splice variants. If you want to reorganise probes so that > there is one gene to one probe google "Brai ...
written 8.8 years ago by Xiaowei Guan90
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question about R package to get gene centric values
... Dear Biodonductor group, I have a question relevant to gene expression dataset. Usually, we will have probes, while a probe set will corresponding to one gene. What should we do about this? Do we use probes as our targets or derive only one value from the probe set corresponding to one gene? Do y ...
probe written 8.8 years ago by Xiaowei Guan90 • updated 8.8 years ago by Paul Geeleher1.3k

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