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File size limits

GREAT currently supports input files of up to 200,000 elements and up to 40 MB in size, whichever is more restrictive.

Handling large data sets

By default GREAT displays data in a summary view that only shows terms signficant by both the binomial test over genomic regions and the hypergeometric test over genes. Large data sets may cause a large fraction of all genes to be selected via the regulatory domain association rules. This can result in saturation of the hypergeometric test over genes such that no hypergeometric test results are significant. The binomial test over genomic regions is robust to large data sets, however. We recommend viewing results for large data sets in the Full display mode and filtering terms enriched due to many regions clustered around one or few genes using the observed gene hits display filter.

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