Package: DecisionDrift
Title: Detecting, Decomposing, and Stress-Testing Temporal Change in
        Repeated Decision Systems
Version: 0.1.0
Authors@R: 
    person(
      given   = "Subir",
      family  = "Hait",
      role    = c("aut", "cre"),
      email   = "haitsubi@msu.edu",
      comment = c(ORCID = "0009-0004-9871-9677")
    )
Description: 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.
License: MIT + file LICENSE
Encoding: UTF-8
Language: en-GB
RoxygenNote: 7.3.3
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), patchwork, knitr,
        rmarkdown, testthat (>= 3.0.0)
Config/testthat/edition: 3
URL: https://github.com/causalfragility-lab/DecisionDrift
BugReports: https://github.com/causalfragility-lab/DecisionDrift/issues
NeedsCompilation: no
Repository: https://causalfragility-lab.r-universe.dev
Date/Publication: 2026-04-12 21:56:38 UTC
RemoteUrl: https://github.com/causalfragility-lab/decisiondrift
RemoteRef: HEAD
RemoteSha: f5d626ee4208380bf5d57b3fcbee5fc5d0462cb6
Packaged: 2026-07-16 07:06:40 UTC; root
Author: Subir Hait [aut, cre] (ORCID: <https://orcid.org/0009-0004-9871-9677>)
Maintainer: Subir Hait <haitsubi@msu.edu>