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fracreg 1.0.1

New Features & Enhancements

• Fractional Ridge Regression: Added fracregridge and fracregridge.pe to implement fractional ridge regression and its corresponding partial effects.
• Fractional Multinomial Logit & Krinsky-Robb: Refactored fracregmlogit.pe to use MASS::mvrnorm for Krinsky-Robb standard error simulations, resolving hardcoded constraints.
• Panel Data Partial Effects: Implemented fracregpd.pe for computing Average Partial Effects (APE) in panel data settings, including full support for Correlated Random Effects (CRE) models and Delta method standard errors.
• Odds Ratios: Added support for computing Odds Ratios and adjustable confidence intervals (level) in output summaries.
• Offset Parameter: Added support for an offset parameter in model specifications.
• S3 Methods & Output Display: Standardised console output by adding dedicated summary() and print() S3 methods across the package to align with R’s standard practices. Changed output tables to say “regression” rather than “model” for clarity.
• Econometric Terminology & Standardization: Renamed Estimate column headers to dy/dx universally across all partial effects tables (fracreg.pe, fracreghet.pe, fracregmlogit.pe, fracregpd.pe, fracregridge.pe), while enforcing Coefficient for non-partial effects outputs.
• Standard Error Annotations: Output tables now dynamically label column headers according to standard error type (e.g. Robust Std.Err., Cluster Std.Err.) and cleanly append specific methodological notes to the tables (e.g., Delta Method, Krinsky-Robb, HC0, CRVE). ### Documentation & Website
• Roxygen2 Migration: Fully automated package documentation by migrating all manual .Rd files into roxygen2 comments embedded directly within the R source files, ensuring airtight synchronization between code and documentation.
• Citations & References: Added citations for the foundational fmlogit (Ji and Woodill) and fracridge (Rokem and Kay) packages across manual pages, README, and vignettes, formatting URLs properly for rendering.
• Logo & Badges: Improved the package hex logo and added status badges to the README.
• Website (pkgdown): Added a sitemap.xml and reordered the README and vignettes sections to properly showcase Fractional Multinomial Logit and Fractional Ridge Regression alongside Panel Data models. Added Willingness to Pay (WTP) plot visualizations in tutorials.
• Help Files: Updated .Rd files to properly reflect table = FALSE default arguments and fixed \usage widths. Updated the package title for clarity and consistency.

Bug Fixes & Under-the-Hood Improvements

• Namespace Imports: Added comprehensive @importFrom tags for base R stats, graphics, and grid functions, alongside ggplot2, eliminating all undefined global function NOTEs during checking.
• S3 Method Registration: Explicitly registered S3 methods (like summary and plot) using @exportS3Method to comply with strict R CMD check standards.
• CRAN Compliance: Wrapped computationally heavy examples (like plot.fracregmlogit.pe) in \donttest{} blocks to strictly respect CRAN’s 5-second execution limit.
• Resolved length > 1 logical condition errors in plot.fracregmlogit standard error rendering by properly adopting match.arg().
• Resolved WTP matrix subsetting issues by enforcing drop = FALSE.
• Cleaned up legacy fmlogit code dependencies and unified the namespace fully under fracregmlogit.
• Fixed NA/NaN evaluation errors in nlminb during fracreghet estimations.
• Resolved devtools::check() formatting issues, including S3 class inheritance checks (inherits()), stats::approx scoping, and fixing missing alt-text for accessibility.

fracreg 1.0.0

• Initial CRAN release.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.