A set of psychometric tools for cognitive diagnosis modeling based on the generalized deterministic inputs, noisy and gate (G-DINA) model by de la Torre (2011) <DOI:10.1007/s11336-011-9207-7> and its extensions, including the sequential G-DINA model by Ma and de la Torre (2016) <DOI:10.1111/bmsp.12070> for polytomous responses, and the polytomous G-DINA model by Chen and de la Torre <DOI:10.1177/0146621613479818> for polytomous attributes. Joint attribute distribution can be independent, saturated, higher-order, loglinear smoothed or structured. Q-matrix validation, item and model fit statistics, model comparison at test and item level and differential item functioning can also be conducted. A graphical user interface is also provided. For tutorials, please check Ma and de la Torre (2020) <DOI:10.18637/jss.v093.i14>, Ma and de la Torre (2019) <DOI:10.1111/emip.12262>, Ma (2019) <DOI:10.1007/978-3-030-05584-4_29> and de la Torre and Akbay (2019).
alabama, graphics, ggplot2, MASS, numDeriv, Rcpp (>= 0.12.1),
Rsolnp, stats, shiny, shinydashboard, utils

alabama, graphics, ggplot2, MASS, numDeriv, nloptr, Rcpp (>=
0.12.1), Rsolnp, stats, shiny, shinydashboard, utils
CDM, cdmTools, Matrix, testthat, poLCA, stringr, knitr,
rmarkdown

c(person(given = "Johannes",
family = "Koch",
role = c("aut", "cre"),
email = "jokoch@pik-potsdam.de"))
A function to convert GDP time series from one unit to another.
All common GDP units are included, i.e. current and constant local currency
units, US$ via market exchange rates and international dollars via
purchasing power parities. Conversion factors can easily be customized.
Conversion at a regional/aggregated level is also possible.
dplyr, stringr, tidyselect, glue, cli (>= 2.4.0), crayon,
magrittr, rlang, tibble, lifecycle
tidyr, readxl, testthat (>= 3.0.0), covr, magclass, WDI

cli (>= 2.4.0), crayon, dplyr, glue, lifecycle, magrittr,
rlang (>= 1.0.0), tibble, tidyselect, withr
covr, knitr, magclass, purrr, readxl, rmarkdown, stringr,
testthat (>= 3.0.0), tidyr, WDI, zoo