Exact(1)
In a first set of experiments, the data consist of only the gene expression features, and in a second batch, the data include both demographic and clinical features as well as gene expression.
Similar(59)
As data mining is performed in an automated batch operation, the data are objective and unbiased.
However, after log transformation and removal of batch effects, the data show global consistency.
We then click "Run the Analysis" to normalize the CEL files with RMA, batch correct the data with ComBat and SVA, and perform differential expression analysis.
Particle size distribution was found to be similar in all studied particle batches, and the data fits reasonably well to log-normal distribution (Additional file 1: Table S2) as also observed before in [30].
This software is able to automatically batch-process the data from multiple wells.
The automatic selection of references makes it useful to perform bulk analysis of many GEO or ArrayExpress experiments without the need of developing a parser to find the normal samples or possible batches within the data.
As summarized Table 1 none of the PCs were associated with the batch effects anymore for the batch corrected data; and the CpGs that were associated with the batch effects were reduced to a few (12, 25, 23 in Dataset 2 and 2, 6, 8 in Dataset 3 for QNβ, lumi and ABnorm normalized data, respectively).
Note that the PubChem database allows free access to more than 35 million molecular structures, and this includes batch download of the data.
PCA analysis revealed no batch effects in the data.
This finding indicated that there are batch effects within the data that must be controlled for.
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