This is a conceptual model of underlying forces creating industrial clusters. There are two contradictory forces - attraction and repulsion. Firms within the same Industry are attracted to each other and on the other hand, firms with the same Activity are repulsed from each other. In each round firm with the lowest fitness is selected to change its profile of Industries and Activities. Based on these simple rules interesting patterns emerge.
This is a companion discussion topic for the original entry at https://www.comses.net/codebases/e6edc29f-2f06-4fed-acc3-2b24df0cdd83/releases/1.0.0/