content_image/319970.jpg content_image/319973.jpg content_image/319974.jpg
can be seen as “weak links” [10] between modules. Weak links have been shown to offer stability in networks [10]. Figure 4 shows an example MRBN. 

Thus, the total number of nodes N$_{T}$ of a MRBN is given by 

and the total number of links T is given by 

<img src='content_image/319970.jpg'>

<img src='content_image/319973.jpg'>

<img src='content_image/319974.jpg'>

since each of the M modules has 〈 L 〉 inputs and N nodes with 〈 K 〉 intramodular inputs. 

