07 October 2005: Integration methods test model added to the catalogue, Lotka-Volterra predator-prey model (Seppelt and Richter

07 October: Integration methods test model added to the model catalogue, Lotka-Volterra predator-prey model (Seppelt and Richter, 2005).
The model is included in response to the call by Seppelt and Richter (2005) for evaluation of the numerical methods of simulation modelling tools. Such evaluation is to be welcomed as it is required to provide confidence in results, though of course, the model itself must also represent the target system adequately for confidence. If either the model representation or numerical methods are flawed, the results will be flawed. Unfortunately, Seppelt and Richter (2005) report aberrant behaviour of Simile 3.2 though neither the authors nor we can reproduce the flawed behaviour. A corrigendum has been published.