AthenyxMultiple Linear Regression
Version history

Release notes.

Track Athenyx releases, modelling improvements, fixes and desktop update changes.

3.1.0

Usability and Reliability Improvements

18 August 2026

Improved filtering workflows, licence activation diagnostics, application startup, and the Windows update experience.

Latest

What changed

  • Redesigned the data filtering interface and added filtering support to Model Explorer.
  • Improved licence activation validation and reliability.
  • Added dedicated licence diagnostics and clearer error information to assist with troubleshooting.
  • Redesigned the Athenyx startup screen with clearer engine status, recovery actions, and access to diagnostic logs.
  • Changed new Windows installations to use a per-user setup, reducing the need for administrator approval.
  • Updated downloaded updates to install silently when the user chooses to restart and install.

3.0.0

Model Explorer

16 August 2026

Introduced Model Explorer for systematically searching, comparing, and understanding linear regression models, variable stability, model complexity, and recurring variable relationships.

What changed

  • Added exhaustive regression model searching with configurable candidate groups, locked predictors, exclusions, and group selection ranges.
  • Added model acceptance requirements for predictor count, significance, adjusted R-squared, VIF, and tolerance.
  • Added configurable missing-value handling and multi-level ranking using fit, error, complexity, and collinearity measures.
  • Added ranked model results with detailed regression output, coefficients, diagnostics, and fit statistics.
  • Added nearby-model comparisons for examining the effect of adding or removing one candidate predictor.
  • Added variable-stability analysis covering inclusion, significance, coefficient direction, and standardised coefficient variability.
  • Added the Model Landscape for comparing fit and complexity across accepted and rejected models.
  • Added a complexity frontier to identify simpler accepted models with competitive adjusted R-squared.
  • Added the Relationships workspace with interactive co-selection graphs using Lift, Jaccard similarity, and joint inclusion rate.
  • Added relationship filtering, variable search, node focusing, dragging, panning, zooming, detailed inspection, and interpretation guidance.
  • Added search summaries and diagnostics for accepted, rejected, and failed models.
  • Added safeguards for large search spaces, missing data, zero-variance predictors, insufficient observations, singular models, invalid fits, and collinearity failures.
  • Added persistent Model Explorer configuration within Athenyx projects.

2.0.0

Hierarchical Regression and Model Blocks

16 August 2026

Introduced regression blocks for building, comparing, and reporting cumulative models with greater control over variable entry and selection.

What changed

  • Added regression blocks for building hierarchical and sequential regression models.
  • Added support for organising independent variables into ordered modelling stages.
  • Added separate Enter, Forward, Backward, and Stepwise methods for each regression block.
  • Added block-specific entry and removal criteria for automatic variable-selection methods.
  • Added cumulative model results for every completed regression block.
  • Added R-squared change, F-change, degrees of freedom, and significance statistics for comparing nested models.
  • Updated model summaries, ANOVA tables, coefficient tables, and selection history to report results for multiple models.
  • Updated analysis history and model comparisons to use the final cumulative model.
  • Updated predicted values, residuals, graphs, and saved analysis outputs to use the final cumulative model.
  • Improved consistency of missing-value handling across cumulative models to support valid model comparisons.
  • Added safeguards for repeated stepwise-selection states, insufficient observations, zero-variance predictors, and singular model designs.
  • Improved handling of deleted variables while preserving their regression block structure for review.
  • Introduced a new analysis format to support regression blocks. Analyses created in earlier versions must be recreated.

1.2.0

Usability and Workflow Improvements

15 August 2026

Improved data editing, grid customisation, and everyday workflows throughout Athenyx.

What changed

  • Added ability to download data as Excel or cvs
  • Added support for copying and pasting variables with their column headings.
  • Added support for pasting data directly into new rows and columns.
  • Added persistent column resizing, multi-column resizing, and automatic column sizing.
  • Added global data-grid font and font-size settings.
  • Added per-variable formatting for alignment, numbers, currency, percentages, and decimal places.
  • Added a new Edit Variable window for viewing variable details and updating names, formatting, and column width.
  • Added the ability to open Edit Variable by double-clicking a column heading.
  • Expanded data-grid context menus with Cut, Copy, Paste, Clear, and relevant row, column, and cell actions.
  • Improved context menus with clearer target information, icons, grouped actions, and smarter positioning.
  • Improved filtered-row updates after data is edited or pasted.
  • Fixed incorrect heading inclusion when copying rows.
  • Fixed context-menu closing and positioning behaviour.

1.1.0

Improved Data Import and Analysis Workflow

11 August 2026

More control over importing data, improved analysis outputs and graphs, and a smoother workspace experience.

What changed

  • Added the ability to open the Actual vs Predicted graph in a separate window.
  • Added a new data import preview for reviewing data before creating a project.
  • Added worksheet selection when importing Excel workbooks.
  • Added controls for selecting header rows, data rows, and columns during import.
  • Added more control over decimal places and statistical result formatting.
  • Added an option to omit leading zeroes from applicable statistical values.
  • Added optional significance indicators to highlight statistically significant independent variables.
  • Added custom names for predicted value and residual output columns.
  • Improved the New Project, Open Project, and Blank Project workflows.
  • Improved graph formatting and the information displayed in charts.
  • Improved menu bar formatting and consistency.
  • Expanded workspace state persistence to retain variable selections.
  • Updated dependant variable ordering to use drag-and-drop.
  • Fixed tooltip behaviour in correlation matrix graphs.
  • Fixed an issue where restoring a dependent variable did not automatically rerun the analysis.

1.0.1

Usability and Reliability Improvements

25 July 2026

A collection of interface, reliability, and project file improvements following the initial Windows release.

What changed

  • Fixed an issue where closing Athenyx could bypass the unsaved changes prompt.
  • Improved button styling and interactions across the application.
  • Improved interface formatting and visual consistency.
  • Improved the storage format of Athenyx project files to better protect project data.
  • Updated supporting legal documentation.

1.0.0

Initial Windows release

30 June 2026

First Windows release of Athenyx for licensed users.

What changed

  • Added multiple linear regression modelling workflow.
  • Added variable selection for dependent and independent variables.
  • Added automatic model updates when inputs change.
  • Added correlation-based variable review and sorting.
  • Added automatic graph generation for model variables.
  • Added workspace persistence for saved model state.
  • Added analysis history for reviewing previous model runs.
  • Added licence key activation support.

0.1.3

Regression modelling enhancements

1 June 2026

Expanded regression modelling capabilities with configurable variable selection methods, improved diagnostics, analysis warnings, and enhanced reporting and graphing workflows.

What changed

  • Added project information support and editing.
  • Added the ability to create a blank project without importing data.
  • Added support for Enter, Forward, Backward, and Stepwise variable selection methods.
  • Added configurable regression options including entry criteria, removal criteria, tolerance thresholds, and missing value handling.
  • Added Selection History reporting.
  • Added analysis warnings for modelling and data quality issues.
  • Improved regression result tables.
  • Improved copying and pasting regression output into document editors.
  • Improved regression engine reliability and validation.
  • Improved support for larger datasets in the data grid.
  • Fixed large pasted datasets being truncated in the data grid.

0.1.2

Desktop update experience

28 May 2026

Introduced update notifications, release notes, and improved update diagnostics.

What changed

  • Added release notes display within the Updates page.
  • Added automatic update checks.
  • Added a dismissible notification banner when updates are available.
  • Added updater diagnostic logging.