dataset03 {RJafroc}

Franken ROC dataset

Description

This is referred to in the book as the "FR" dataset. It consists of 100 cases, 67 of which are diseased, interpreted in two treatments, "0" = conventional film radiographs, "1" = digitized images viewed on monitors, by four radiologists using the ROC paradigm. Often referred to in the ROC literature as the Franken-dataset, which, along the the Van Dyke dataset, has been widely used to illustrate advances in ROC methodology.

Usage

dataset03

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 [1:2, 1:4, 1:100, 1], ratings of non-lesion localizations, NLs

• rating$LL, num [1:2, 1:4, 1:67, 1], ratings of lesion localizations, LLs

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

• lesions$perCase, int [1:67], number of lesions per diseased case

• lesions$IDs, num [1:67, 1], numeric labels of lesions on diseased cases

• lesions$weights, num [1:67, 1], weights (or clinical importances) of lesions

• descriptions$fileName, chr, "dataset03", base name of dataset in 'data' folder

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

• descriptions$name, chr "FRANKEN", the name of the dataset

• descriptions$truthTableStr, num [1:2, 1:4, 1:100, 1:2], truth table structure

• descriptions$design, chr "FCTRL", study design, factorial dataset

• descriptions$modalityID, chr [1:2] "TREAT1" "TREAT2", treatment labels

• descriptions$readerID, chr chr [1:4] "READER_1" "READER_2" "READER_3" "READER_4", reader labels

References

Franken EA, et al. Evaluation of a Digital Workstation for Interpreting Neonatal Examinations: A Receiver Operating Characteristic Study. Investigative Radiology. 1992;27(9):732-737.

Examples

str(dataset03)
PlotEmpiricalOperatingCharacteristics(dataset = dataset03, opChType = "ROC")$Plot