The reply is determined by a variety of elements. These embrace: (i) are there interactions between the entity and the atmosphere, (ii) does the mannequin have a time element, (iii) is the mannequin a cohort or particular person degree mannequin, (iv) is the mannequin steady or discrete states, and (v) is it Markovian or not. The Brennan taxonomy of mannequin constructions helps present an summary of which mannequin sort to choose primarily based on these issues.
The desk above is from Breeze et al. (2023), however tailored from Brennan et al. 2006 and Briggs et al. 2016.
To present some examples of what Breeze et al. (2023) phrases complicated methods fashions:
Computable General Equilibrium (CGE) fashions have been used to mannequin selections which have cross sector impacts that affect the indications of the nationwide financial system. Partial differential equation fashions can be utilized to explain the dynamics of infectious illness transmission. Both CGE and Partial differential equation fashions have key similarities to system dynamics and describe aggregated populations. In infectious illness modeling, the time period individual-based mannequin is usually used for ABMs [agent-based models]. IBMs have lengthy been used to incorporate spatial and social inhabitants construction related to transmission and have been generally utilized in modeling COVID-19 and impacting coverage choices. IBMs enable straightforward inclusion of behavioral change to undertaking its results on transmission dynamics