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Choice Simulator Version History

Choice Simulator 1.3.6506 (25 October 2017)

Bug Fixes
  1. This release fixes a problem in the initial v1.3 release where creating a client simulator package could result in the software freezing.
  2. This release fixes a problem in the initial v1.3 release where changing the exponent in an Excel Simulator using Randomized First Choice would not update the simulation results.

Choice Simulator 1.3.6501 (20 October 2017)

Bug Fixes
  1. This release fixes an issue in the previous release which incorrectly flagged level values less than zero as invalid.

Choice Simulator 1.3.6491 (9 October 2017)

  1. The Choice Simulator now has the ability to perform optimization searches using the Exhaustive and Grid algorithms. Exhaustive has the ability to use multiple objectives (such as Share, Revenue, Profit, Cost or Volume).
  2. Excel-based simulators can now be created with an optional exponent field for Share of Preference or Randomized First Choice (providing a client with a RFC simulator including the exponent will require the client to update to the most recent version of the Excel Plugin).
Bug Fixes
  1. Formulas used in scenarios must now be preceded with an equals (‘=’) sign. For example, when specifying a range, it should appear as ‘=range(1,4)’ or ‘=1-4’.
  2. In sensitivity analysis, when a default value is assumed for a cell with a range (not specified by the user), the software will assume the first level of the attribute. Previously the software used the median value of the level values.

Choice Simulator 1.2.6219 (16 January 2017)

Bug Fixes
  1. Bug: Sensitivity graph results were incorrect.
  2. Bug: N/A was not handled correctly in prohibitions.

Choice Simulator 1.2.6187 (9 December 2016)

  1. Feature: The ability to create tables for costs and incremental prices, and use that information in conjunction with the ability to report multiple metrics. Cost, Revenue and Profit can be reported alongside shares of preference. These are available for all types of simulation (standard, sensitivity, and the upcoming optimization searches), although it should be noted that incremental prices will only be used in optimization searches.
  2. Feature: The selected utility run is now saved for the next time the project is used.
  3. Feature: Individual results now include segmentation information.
  1. Change: Randomized First Choice now uses a faster method of producing multivariate normals used in the algorithm. However, this means that results will differ slightly from previous versions.
  2. Change: Randomized First Choice has improved behavior in conjunction with Product Availability (multistore) settings.
Bug Fixes
  1. Bug: Individual results would change order in repeated simulations.
  2. Bug: Certain proxy configurations were not able to connect to Sawtooth Software Account. While this has been improved, there may be configurations that still prevent access.
  3. Bug: Various areas in the simulator did not utilize locale-specific number formatting correctly.
  4. Bug: Prohibitions involving ‘All Levels’ were not being flagged as prohibited.
  5. Bug: Reports involving segments and netted shares did not report the correct shares.

Choice Simulator 1.1.1 (23 August 2016)


In the Choice Simulator a change was made in the way Randomized First Choice operates when applying product availability adjustments via multi-store shopping. Previously, we were first computing share adjustments to account for product availability in stores according to the share of preference (logit) rule, followed by a secondary adjustment for product similarity according to Randomized First Choice. Now, the entire process is more true to Randomized First Choice in that it is used (rather than logit) throughout the entire multi-store simulation procedure. The results are usually not very different, but now with a little bit stronger correction for product similarity.

Bug fixes

Simulations using both the First Choice simulation method and adjustments for product availability (multi-store) would calculate incorrect product shares.

Choice Simulator 1.1 (9 March 2016)

New Features
  1. The ability to export a PowerPoint-based report of simulation results is now available.
  2. The simulator now supports the Academic Lab and Academic Research licenses.
  3. Simulations now utilize multi-processing, leading to improved performance.
  4. Scenario progress is now shown in the Windows taskbar.
  5. When importing a demographics file, if a labels file (from SSI Web or Lighthouse) is available, the simulator will use the variable types and category labels found in the file.
  6. The maximum number of products that can be created in an Excel simulator is now 25 (previously 15).
  7. The main window height will now better accommodate smaller resolutions.
Bug fixes
  1. When uninstalling the RFC Excel plugin, the installer now checks to ensure Excel is not running.
  2. The utility report now uses Effective Sample Size in calculating the average utility’s standard error.
  3. Columns will no longer disappear when renaming attributes and and there are no defined products.
  4. Scenarios will now check for errors in the conditional price tables before they can be simulated.
  5. Error checking in conditional price has been fixed to show the correct row numbers.
  6. Attribute level values now display correctly under certain foreign locales.
  7. Randomized First Choice now removes attributes coded as excluded from the active attribute count.
  8. Import of demographics now handles text variables where the text has text in quotes.

Choice Simulator 1.0 (15 January 2016)

  1. Initial release.

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