The Metalog Distributions

Software Resources

Software implementations of metalog distributions are that are known to us are listed below. There are likely others of which we are unaware.

Excel Workbooks. We offer the complete metalog system (including metalog panel) within free, convenient Excel workbooks programmed by the author of this website. The worksheets in these workbooks are programmed in native Excel, without macros or named ranges, which means that they can be easily and safely copied into other Excel workbooks while retaining their full functionality.  Click here for details.

Frontline Systems' Analytic Solver, RASON, and Solver SDK. Analytic Solver V2021.5 brings metalog distributions to the fore, with a powerful new facility to automatically fit user data to the full range of possible (bounded and unbounded, multi-term) metalog distributions and to compare metalog distributions with classical distributions based on user-selected goodness of fit criteria. This release also includes a metalog panel to aid choosing among metalogs with different numbers of terms.

Lumina Decision Systems' Analytica. Lumina Decision Systems, which provides software to help bring clarity to difficult decisions, includes the complete metalog system (as originally published) in the recent release of its flagship product Analytica 5.0. For documentation of Analytica's metalog implementation, click here.

BayesFusion's GeNIe, which offers modeling software for graphical models, such as Bayesian networks, influence diagrams, dynamic Bayesian networks, unrestricted hybrid (discrete and continuous) Bayesian networks, includes the complete Metalog system (as originally published) in the recent release of its main software product GeNIe 4.0. Click here for documentation of GeNIe and its metalog implementation.

R. A CRAN approved rmetalog package is availableFor questions and feedback, contact Isaac Faber.

Python. Two Python packages are available. Pymetalog  closely mirrors the R package. Metalogistic is coded so as to take full advantage of the SciPy platform of operations on continuous probability distributions.

SIPmath Modeler Tools. SIPMathTM Modeler Tools is a simulation environment in Excel provided by Probability Management as a free Excel add-in. The current version of the Tools offers two implementations. One is the SPT-metalog distributions (e.g. 3-term metalogs parameterized by 10/50/90 quantiles).  Here is a with a tutorial. For the general metalogs (including more terms), we offer a separate tutorial.

SmartOrg's Portfolio Navigator. SmartOrg, which provides a web-based software environment to enable better decision conversations in new product development and portfolio management, includes metalogs in their new release of Portfolio Navigator 7 to aid probability distribution visualization and communication. 

Web browser. allows easy experimentation with fitting metalogs and other distributions to data.