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Hi Nick, Can you reframe the purpose of the paper to discover what kind of empirical research is needed to gain more insight into the system? Using the simulations you might discover that (theoretically) some variables make no difference, whereas others have a large influence. A second thought is that you might not need spatial empirical data per se if you have enough other empirical data to validate your model on (e.g., is there a follow-up from that survey?) All the best, Rijk Op wo 12 sep. 2018 om 09:04 schreef Nicolas Malleson < [log in to unmask]>: > Hi SIMSOC, > > I was wondering if anyone has any thoughts/advice about a difficulty that > I’m having with validating a model. This is in response to (very fair) > comments by reviewers on a paper that is under review, so I will talk about > the problem in general terms. I think the discussion should be of interest > to others on the list. > > Colleagues and I have built a spatially-realistic agent-based model with > agents who move around. It’s based on a real urban area. We have used an > a-survey to calibrate the behavioural parameters, such that the agents > behave in a way that is consistent with the results of the survey. The > survey is national, so not specific to our study area. We put the agents > into a virtual environment, let them go, and see what happens. > > The reason for creating this model in the first place is that we have no > data on the spatial behaviour of the real individuals in our study area. So > we’re hoping that by implement behaviour that is consistent with the > results of the survey, the agents will give us some insight into the real > dynamics of the case study area. > > But how do we validate the model? Assume that there are no empirical data > available for our study area (it is possible to try to stand on the road > and talk to people, but this is probably out of scope). What should an > aent-based modeller do when they have an empirical model but no empirical > validation data?? > > All the best, > Nick > > > > > — > Dr Nick Malleson > Room 10.114 (Manton building) > School of Geography, University of Leeds > [log in to unmask] > http://nickmalleson.co.uk/ > 0113 34 35248 > > > ######################################################################## > > To unsubscribe from the SIMSOC list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=SIMSOC&A=1 > ######################################################################## To unsubscribe from the SIMSOC list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=SIMSOC&A=1