【作者】 李小妹； 王能超；

【机构】 华中科技大学计算机科学与技术学院；

【摘要】 <正> 1 引言分形几何创造了很多美的景象,使人类获得了美的享受,当初Mandelbrot在1986年提出分形几何学时,定义分形是其豪斯道夫维数严格大于其拓扑维数的集合。拓扑维数总是非负整数,比如点是零维,线是一维,面是二维,体是三维。但很快就发现这一定义不够严谨。比如Peano曲线的豪斯道夫维数2就是一个整数。于是Mandelbrot又修改了他的定义,强调具有自相似(包括统计意义上的自相似)性质的集合为分形。如此一来,又如何来描述更多还原

【Abstract】 This paper, based on using fractal theory to investigate fractal structure of DNA sequence using iterated function systems model, explored and analyzed the relations between fractal structure of DNA sequence and similarity. We.suggest that not only the complexity in biosystem can be discribed well using fractal theory, but also it is more important that the fractal theory will probably offer the profitable enlightening and new information for people recognizing relationship between sequence characteristic and similarity.更多还原