þÿ<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>JBPC Vol. 7, 4, 2007 ABSTRACT </title> </head> <body link="#0000FF"><center><h1><font color="#006600">The Journal of Biological Physics and Chemistry</font></h1></center> <p></p><p></p> <b><center>2007<p>Volume 7, Number 4, p.p. 125 128</center></b> <br> <div> <p><b><font size=+2> Principles of modularity, regularity, and hierarchy for scalable systems </font></b></p> <p> <b> Hod Lipson </b> <br> <br> <i> Mechanical & Aerospace Engineering, and Computing & Information Science, Cornell University, Ithaca, 14850 NY, USA </i></p> <P align=justify> Scalability of open-ended evolutionary processes depends on their ability to exploit functional modularity, structural regularity and hierarchy. This paper offers a number of observations about properties, dependencies and tradeoffs among these principles and proposes a formal model where such elements can be examined</p> <b>Keywords: </b> evolutionary computation, hierarchy, modularity, regularity, tiling problem </p> <br> </div> <p></p> <center><p><i><font size=-1><a href="jbpc40707.html">back to contents</a></font></i></p></center> </body> </html>