Verbreitung von Verhalten (Annahmen hinter dem D3 Modell) by Kai Neumann

The dynamics of cancer (collaborative model) by Kai Neumann

Just the start of a model since I was asked for a rather general model on this difficult topic. Since I am a layperson this model should be improved by either directly editing it via collaboration link or at least discussing it.

Matching data example - calibrating a model by Kai Neumann

While listening to a presentation on the ISDC2023 where they showed a sophisticated way of calibrating parameters of a model to real data I decided to offer a simple solution using the iMODELER's iM-Optimizer. The idea is to minimize the deviation of the model results from the real data using a range() for all variable parameters. Simple as that though of course it also has some limitations.

PiM demo model on IT processes p1: system up and running 2 by Kai Neumann

London's Housing Crisis - a collaborative modeling experience by Kai Neumann

On LinkedIn (https://www.linkedin.com/groups/2639211/2639211-6171315685852012548?trk=hb_ntf_COMMENTED_ON_GROUP_DI...) Bob Bollen asks for ways to model London's housing crisis. While some suggestions are rather complicated (some imho outdated) I'd like to suggest to just start with it in a way that not just experts but also stakeholders can read a model and contribute to it. So here is the start of a collaborative model.  Please ask for any further assistance / guidance using the comment functions on kno...

Tutorial model: Strategy development by Kai Neumann

ct Modell Projekt Gartenteich by Kai Neumann

Biomass Web: Accra's Mini Model on Exports by Kai Neumann

Just a small model to facilitate a discussion during a workshop in Ghana. The thesis was that seasonality would lead to less exports of crops and the counter argument was that it might lead to a necessity to export if domestic demand isn't able to consume all the crops. However, if irrigation leads to less seasonality it might be possible to export more. Tricky, isn't it?

General Trend Model by Kai Neumann

Quantitative Model Personal Financial Situation by Kai Neumann

Just a small quantitative model taken from a very large model. It shows a way to model the financial situation of persons or groups of persons with spendings and income as given parameters and savings (and pensions) and credits as a result.