The invention relates to a
similarity analysis method of a biological sequence based on a negative sequence mode, an implementation
system and a medium. The
similarity analysis method comprises the following steps: (1) data preprocessing: representing letters in
a DNA sequence with numbers; dividing the data into a plurality of blocks, and taking the obtained blocks as a
data set for frequent pattern mining; (2) frequent pattern mining: using an fNSP
algorithm to mine a
data set; (3) performing graphic representation on the maximum frequent positive and negative sequence
modes; converting themaximum frequent positive and negative sequence
modes into a digital sequence; (4)
similarity analysis of the
DNA sequences: solving the similarity of different
DNA sequences, and selecting the
DNA sequence corresponding to the minimum similarity as the DNA sequence to be researched. According to the method, the negative sequence can be effectively expressed and analyzed, and different analysis results can be obtained by selecting different maximum frequent pattern combinations, and therefore the memory and time consumption of a computer are greatly reduced.