#' @references
#' **Data originated from:**
#'
#' - Templin, J., & Bradshaw, L. (2014). Hierarchical diagnostic
#' classification models: A family of models for estimating and testing
#' attribute hierarchies. *Psychometrika*, *79*(2), 317–339.
#' \doi{10.1007/s11336-013-9362-0}
#' - Templin, J., & Hoffman, L. (2013). Obtaining diagnostic classification
#' model estimates using mplus. *Educational Measurement: Issues and
#' Practice*, *32*(2), 37–50. \doi{10.1111/emip.12010}
#'
#' **Data used in:**
#'
#' - Culpepper, S. A., & Chen, Y. (2019). Development and application of an
#' exploratory reduced reparameterized unified model. *Journal of
#' Educational and Behavioral Statistics*, *44*(1), 3–24.
#' \doi{10.3102/1076998618791306}
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