A method for assigning an attribute to an agent for use in an agent-based model, including receiving or selecting a first numerical value for assigning an attribute of an agent in an agent-based model. The method further includes receiving or selecting a random numerical value, blending the first and random numerical values, resulting in an intermediate value, and blending the intermediate result with the first numerical value, or the random numerical value, or with a second numerical value, resulting in an end value. The method further includes utilizing the end value to assign the attribute of the agent in the agent-based model.