Models

SimEnv - A Multi-Run Simulation Environment for Quality Assurance and Scenario Analyses

SimEnv is a multi-run simulation environment that focuses on evaluation and usage of models with large and multi-dimensional output mainly for quality assurance matters and scenario analyses using sampling techniques.

TOCSY - Toolboxes for Complex Systems

The Toolboxes for Complex Systems (TOCSY) is a compilation of innovative methods for modern nonlinear data analysis. It allows for filtering data, parameter estimation, investigation of complex and non-linear dynamics, or advanced synchronisation and correlation studies. All tools can be downloaded and used for free. Some tools are available as online tools, e.g., the calculation of recurrence plots: http://www.recurrence-plot.tk/online/

Read more: http://tocsy.pik-potsdam.de/

Lagom generiC - an agent based model for representing economic systems

This is Lagom generiC 2.0a, an agent based model for representing economic systems – the economy of Germany, the Mediterranean Region, the world – over a time horizon of one to several decades.
The model is based on a set of agents including ﬁrms, households, a central bank, a government, and the rest of the world. Rules of thumb, imitation and mutation mechanisms govern the evolution of prices, technologies, and beliefs on the basis of which agents produce, exchange and consume goods, negotiate labor contracts or credits.
The economic activity is simulated by the execution of these actions and interactions at variable frequencies. Stochastic components in the choices of agents and in their interactions lead to a probabilistic exploration of the set of economic trajectories.

GEM-E3 / M30

GEM-E3 has been used by the EU Commission to assess climate change and energy policy options. It is a computable general equilibrium model covering the whole world aggregated to 38 regions and 25 economic activities, The GEM-E3 model was initially built under the auspices of EC (DG-RTD) by a consortium involving ICCS, NTUA, BUES, ERASME, KUL, PSI and ZEW. The model, in line with standard modeling practice, has been designed as a single equilibrium model and calibrated to a single year. Therefore, it is fit primarily to study future variations in the environment of the equilibrium growth path given by the business as usual scenario. We have used it in order to study the welfare and economy-wide implications of a 30% emissions reduction target. However, our primary goal here is to study the implications of such a target when the possibility of a new growth path is taken into account (> see Essentials). Currently, no multi-regional and multi-sector model with multiple equilibria is available for the European economy, and it will take considerable work to develop one. However, it is possible to achieve a first approximation to a new growth path by introducing three key features in a model like GEM-E3: learning by doing, shifting expectations, and different regimes of the labor market. This we have done, and with the enhanced model we have investigated the possibility of a new growth path for Europe. The document available below explains the functioning of the GEM-E3 model, with and without these modifications. From a computational point of view, the modifications are minor, but they are significant in an economic perspective.

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