Vensim DSS is a program designed for managing large and mode complicated models. It has an interface development tool for creating management flight simulators, external functions and macros, compiled simulations. It also provides Causal Tracing of structure and behavior, and has Monte Carlo sensitivity, optimization and subscripting (array) capabilities.
v6.3 [Aug 16, 2014]
Random Numbers & Sampling
- Added a pseudorandom number generator, extensively tested with the Statistical Test Suite from the National Institute of Standards – great for financial, stochastic or statistical models that are heavy consumers of random numbers.
- Optimization and sensitivity control files may now specify a random seed of 0 to trigger randomization to system cryptographic sources (useful for performing independent runs on multiple computers without editing the control files).
- Improved sampling for Sensitivity (Monte Carlo) Simulations.
Optimization
- Big improvements to Markov Chain Monte Carlo and Simulated Annealing performance
- A broader distribution of initial test points in random multistart optimization (MWYS), to find optimal solutions faster (up to 100x in one test case).
- Improved speed in stochastic optimization, with support for the File sensitivity control option.
Review 2D and 3D designs without using the application they were created in
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Mall Creeps
