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The major aim of the presented model is to provide an example how hybrid ABM can be build based on spatial interaction model. The hybrid approach let the researcher support his design decisions with a well-tested aggregated approach.
Another aim, much less important from a theoretical point of view is to answer the question: where is the best place for a new swimming pool in a region of Krakow (in Poland)? Although SIM is not conceived for finding optimal location, it will just serve as an example for testing seven what-if scenarios. In this model, the best place is the one that will attract the highest number of clients among checked locations. Therefore the model is designed to solve the real-world scenario. It simulates the movement of clients from their homes to swimming pools. Clients are divided into two groups: public transport (PT) passengers and car drivers. The main result is clients distribution among all swimming pools in the region, and the optimal location is chosen. In the first step, a model is calibrated without new facilities. Next, each one of seven new locations is checked, and the best one is chosen for the investment.
The purpose of this hybrid ABM is to answer the question: where is the best place for a new swimming pool in a region of Krakow (in Poland)?
The model is well described in ODD protocol, that can be found in the end of my article published in JASSS journal (available online: http://jasss.soc.surrey.ac.uk/22/1/1.html ). Comparison of this kind of models with spatial interaction ones, is presented in the article. Before developing the model for different purposes, area of interest or services, I recommend reading ODD protocol and the article.