The internal architecture is fully refactored to an R6 design.
Direct access to internal slots is no longer supported.
Users relying on previous S3-style behaviour may need to update
their code.
New features
The PSTR class now follows an R6 design with reference
semantics.
The main modelling steps are implemented as class methods.
Exported wrapper functions remain available for backward
compatibility.
The command line output is redesigned using the cli
package.
The print layout is modernised using knitr::kable.
Separate print views are available for summary, tests, estimation,
and evaluation.
Internal getters and setters are added to support a clean R6
workflow.
Improvements
Evaluation and bootstrap routines are rewritten under the R6
structure.
Result objects are stored with consistent naming (tv,
ht, wcb_tv, wcb_ht).
Numerical robustness is improved in near-singular matrix inversion
cases.
An SVD-based pseudoinverse is used when necessary.
Bootstrap routines use deep cloning to avoid overwriting the
original object.
Internal print helpers are reorganised into dedicated private
methods.
New Features in PSTR
1.3.0 ‘Yellow Panel’
fix the errors in R version 4.
change documentation.
New Features in PSTR
1.2.5 ‘Orange Panel’
fix the bug in the function “plot_transition”.
fix the bug in the function “plot_coefficients”.
New Features in PSTR
1.2.4 ‘Orange Panel’
improve the plotting function “plot_transition” and
“plot_response”.
add new plotting function “plot_coefficients”.
change documentation.
New Features in PSTR
1.2.3 ‘Orange Panel’
fix some bugs found in the previous version.
New Features in PSTR
1.2.2 ‘Orange Panel’
fix some bugs found in the previous version.
New Features in PSTR
1.2.1 ‘Orange Panel’
Link to the working paper.
New Features in PSTR
1.2.0 ‘Orange Panel’
New function “plot_response” which use the ggplot2 and plotly
packages to plot the curve or surface of the expected response
(contribution) against some variable and the transition variable.
The estimation function “EstPSTR” will return the estimated
time-invariante individule effects.
The width of the separating lines in printing the results can adjust
itself automatically to fit the width of the console.
Rewrite the “version” function.
New Features in PSTR 1.1.0
‘Red Panel’
Better documentation.
In the function “EstPSTR”, now the initial value for “gamma” is
allowed. The user can freely choose either “gamma” or “delta” to input
for the estimation.
Estimation of a linear panel regression model with fixed
effects.
The initial values can now be chosen automatically and will be
returned after estimation.
New function “plot_transition” which use the ggplot2 package to plot
the estimated transition function.