Fractional Brownian motion(FBM) is used in the parameterized modeling of base distributing of DNA sequence. Using mexihat wavelet do wavelet transform and Hurst index is calculated which can describes the self-similarity of DNA sequence.

• 采用分数布朗运动(FBM)来对DNA序列的碱基分布进行参数化建模，用墨西哥帽小波变换来计算DNA序列的Hurst指数，通过Hurst指数来刻画DNA序列的自相似特性。