| Individual-based | Represents the individuals in a population as separate individuals; typically uses the Simile population submodel q.v. |
| Individual-based population dynamics | Represents the changing numbers of individuals in a population; typically uses the Simile population submodel q.v. |
| Inheritance | New individuals in a population are parameterized by values from their parent individuals, either fixed (e.g., genetic information) or variable(e.g., location, wealth) |
| Insects | Models of insect population dynamics, pests etc |
| Iteration | A calculation that is performed many times in order to seek a result with the desired properties. It may be searcing through a list, doing successive approximations, or simply trying different random sets of inputs. |