The solution will depend on a lot of elements. Those come with: (i) are there interactions between the entity and the surroundings, (ii) does the type have a time element, (iii) is the type a cohort or particular person degree type, (iv) is the type steady or discrete states, and (v) is it Markovian or no longer. The Brennan taxonomy of type buildings is helping supply an outline of which type sort to pick out in accordance with those issues.

The desk above is from Breeze et al. (2023), however tailored from Brennan et al. 2006 and Briggs et al. 2016.

To supply some examples of what Breeze et al. (2023) phrases complicated methods fashions:

Computable Normal Equilibrium (CGE) fashions had been used to type alternatives that experience pass sector affects that affect the indications of the nationwide economic system. Partial differential equation fashions can be utilized to explain the dynamics of infectious illness transmission. Each CGE and Partial differential equation fashions have key similarities to device dynamics and describe aggregated populations. In infectious illness modeling, the time period individual-based type is regularly used for ABMs [agent-based models]. IBMs have lengthy been used to incorporate spatial and social inhabitants construction related to transmission and feature been regularly utilized in modeling COVID-19 and impacting coverage selections. IBMs permit simple inclusion of behavioral trade to mission its results on transmission dynamics