Formulating a fitness function involves several steps:
- Define Objectives: Clearly define what the fitness function aims to achieve, such as minimizing the number of infections or accurately predicting the spread of disease. - Select Metrics: Choose appropriate metrics that will be used to measure fitness. Common metrics include root mean square error (RMSE), mean absolute error (MAE), and Akaike Information Criterion (AIC). - Data Collection: Gather the necessary data for calibration and validation of the fitness function. - Model Implementation: Implement the epidemiological model and apply the fitness function to evaluate its performance.