The invention discloses a process for identifying significantly
differential expression gene sets, which comprises the following steps, firstly setting and inputting data, secondly vesting genes to each
gene set, thirdly checking whether the number of genes in each
gene is larger than the defined number which is set, if the result is not, then abandoning the gene set, fourthly calculating expression variability index of each gene, fifthly using all genes on a whole
chip as background genes, and calculating the expression variability index of the background genes, sixthly randomly sampling from the background genes, and checking the significance of the E value of each gene set, and seventhly outputting the gene set which meets the threshold value requirement as the identification result according to the threshold values of the set E value and p value. The process of the invention has excellent identification effect for large
gene sets, guarantees higher accuracy under the condition of fewer detecting times, and greatly increases the value of
gene expression values in practical application.