Parameters | Import | Background Correction Method

Background Correction Method
Select a method for background correction. As availability of specific methods varies by process, you might see different combinations of the following choices.
The methods are summarized as follows:
Subtracts a smooth background surface computed by averaging over blocks of data. Shifted Log2 transformation is recommended when applying the Kernel Surface method. Adding a constant (16 to 32) as a Shifting Factor will help stabilize the variation at the low expression range after log transformation.
Note: This method cannot be applied for WT-Gene and Exon arrays.
Note: This method requires the corresponding tab-formatted probe sequence file.
To Choose a Background Correction Method: