datasetDegenerate {RJafroc}

Simulated degenerate ROC dataset (for testing purposes)

Description

A simulated degenerated dataset. A degenerate dataset is defined as one with no interior operating points on the ROC plot. Such data tend to be observed with expert level radiologists. This dataset is used to illustrate the robustness of two fitting models, namely CBM and RSM. The widely used binormal model and PROPROC fail on such datasets.

Usage

datasetDegenerate

Format

A list with 3 elements: $ratings, $lesions and $descriptions; $ratings contain 3 elements, $NL, $LL and $LL_IL as sub-lists; $lesions contain 3 elements, $perCase, $IDs and $weights as sub-lists; $descriptions contain 7 elements, $fileName, $type, $name, $truthTableStr, $design, $modalityID and $readerID as sub-lists;

• rating$NL, num [1, 1, 1:15, 1], ratings of non-lesion localizations, NLs

• rating$LL, num [1, 1, 1:10, 1], ratings of lesion localizations, LLs

• rating$LL_ILNA, this placeholder is used only for LROC data

• lesions$perCase, int [1:10], number of lesions per diseased case

• lesions$IDs, num [1:10, 1] , numeric labels of lesions on diseased cases

• lesions$weights, num [1:10, 1], weights (or clinical importances) of lesions

• descriptions$fileName, chr, "datasetDegenerate", base name of dataset in 'data' folder

• descriptions$type, chr "ROC", the data type

• descriptions$name, chr "SIM-DEGENERATE", the name of the dataset

• descriptions$truthTableStr, NA, truth table structure

• descriptions$design, chr "FCTRL-X-MOD", study design, factorial dataset

• descriptions$modalityID, chr "1", treatment label(s)

• descriptions$readerID, chr "1", reader labels

Examples

str(datasetDegenerate)