DecisionDrift: Detecting, Decomposing, and Stress-Testing Temporal Change in
Repeated Decision Systems
Tools for detecting, decomposing, and stress-testing temporal drift
in repeated binary decision systems. Complements the 'decisionpaths' package by
shifting focus from path construction to system-level change over time. Implements
five core analytic modules: (1) prevalence drift — did the overall decision rate
change over time?; (2) transition drift — did the probability of switching or
persisting change?; (3) entropy and stability trends — did path complexity evolve?;
(4) group-differential drift — did the system drift differently across subgroups?;
(5) change-point and regime-shift detection — did the system change abruptly after
a policy or model update? Additionally provides a robustness module for testing
stability of drift conclusions across analytic choices, and a sensitivity module
for probing vulnerability to data problems including missingness, miscoding, and
threshold shifts. Defines four original drift indices: the Decision Drift Index
(DDI), Transition Drift Index (TDI), Group Differential Drift (GDD), and
Cumulative Drift Burden (CDB). Applications include algorithmic audit, AI
governance, education, health, and organisational research.
| Version: |
0.1.0 |
| Depends: |
R (≥ 4.1.0) |
| Imports: |
cli (≥ 3.0.0), rlang (≥ 0.4.0), stats, tibble (≥ 3.0.0) |
| Suggests: |
decisionpaths, ggplot2 (≥ 3.3.0), knitr, patchwork, rmarkdown, testthat (≥ 3.0.0) |
| Published: |
2026-04-16 |
| DOI: |
10.32614/CRAN.package.DecisionDrift |
| Author: |
Subir Hait  [aut,
cre] |
| Maintainer: |
Subir Hait <haitsubi at msu.edu> |
| BugReports: |
https://github.com/causalfragility-lab/DecisionDrift/issues |
| License: |
MIT + file LICENSE |
| URL: |
https://github.com/causalfragility-lab/DecisionDrift |
| NeedsCompilation: |
no |
| Language: |
en-GB |
| Materials: |
README, NEWS |
| CRAN checks: |
DecisionDrift results |
Documentation:
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