I am very new to bioconductor. I am developing a feature selection technique based on pathways.
When I am trying to get the gene id from the ProbeID illumina gene expression, I get the same gene for more than one probe ID.
res=data.frame(Gene=unlist(mapIds(illuminaHumanv4.db, probeID,"SYMBOL","PROBEID", ifnotfound=list(NA))))
The gene id for the probes
The next step of my analysis is to get the pathway of the gene to make the feature selection. Is getting the same gene for more than one probe id right? . If it is right, what is the best to do for probes with the same gene name in the feature selection ?