wbca: Wisconsin breast cancer database

wbcaR Documentation

Wisconsin breast cancer database

Description

Data come from a study of breast cancer in Wisconsin. There are 681 cases of potentially cancerous tumors of which 238 are actually malignant. Determining whether a tumor is really malignant is traditionally determined by an invasive surgical procedure. The purpose of this study was to determine whether a new procedure called fine needle aspiration which draws only a small sample of tissue could be effective in determining tumor status.

Format

A data frame with 681 observations on the following 10 variables.

Class

0 if malignant, 1 if benign

Adhes

marginal adhesion

BNucl

bare nuclei

Chrom

bland chromatin

Epith

epithelial cell size

Mitos

mitoses

NNucl

normal nucleoli

Thick

clump thickness

UShap

cell shape uniformity

USize

cell size uniformity

Details

The predictor values are determined by a doctor observing the cells and rating them on a scale from 1 (normal) to 10 (most abnormal) with respect to the particular characteristic.

Source

Bennett, K.,P., and Mangasarian, O.L., Neural network training via linear programming. In P. M. Pardalos, editor, Advances in Optimization and Parallel Computing, pages 56-57. Elsevier Science, 1992


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