Get It
Vensim 6.4 is available for download or purchase in the Vensim Store .
Upgrades are easy – just visit the download page and enter your license key information.
- If your maintenance is current, you can download immediately.
- If you don’t have a current license, you can extend your maintenance easily – just follow the Upgrade link that will be generated.
- Can’t find your license? Need other options? No problem – contact sales at vensim@vensim.com for help, volume quotes and other information.
PLE is always free for noncommercial use, and the Model Reader is free for redistribution of any model.
What’s New?
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Optimization improvements |
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A new payoff type permits elements that contribute to Kalman filter updates but not to the optimization payoff |
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Minor bug fix to prevent randomization of MCMC internal processes |
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Faster payoff computation |
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Kalman filter stability has been improved, particularly for models with many measurements and few states |
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Sensitivity simulation improvements |
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Improved distribution parameter validation |
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Enhanced data export – see next item. |
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Data import/export – new functionality makes it easier to work with enterprise data sources, statistics, visualization and business intelligence packages |
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Sensitivity simulation export has been greatly enhanced, and also includes tidy and relational formats – see SENS2FILE |
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The Runs Compare tool can now be used with non-simulation sources (i.e. .vdf files from data) |
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Many bug fixes on the Mac. |
