Breast Cancer Wisconsin (Prognostic)
Donated on 11/30/1995
Prognostic Wisconsin Breast Cancer Database
Dataset Characteristics
Multivariate
Subject Area
Health and Medicine
Associated Tasks
Classification, Regression
Feature Type
Real
# Instances
198
# Features
33
Dataset Information
Additional Information
Each record represents follow-up data for one breast cancer case. These are consecutive patients seen by Dr. Wolberg since 1984, and include only those cases exhibiting invasive breast cancer and no evidence of distant metastases at the time of diagnosis. The first 30 features are computed from a digitized image of a fine needle aspirate (FNA) of a breast mass. They describe characteristics of the cell nuclei present in the image. A few of the images can be found at http://www.cs.wisc.edu/~street/images/ The separation described above was obtained using Multisurface Method-Tree (MSM-T) [K. P. Bennett, "Decision Tree Construction Via Linear Programming." Proceedings of the 4th Midwest Artificial Intelligence and Cognitive Science Society, pp. 97-101, 1992], a classification method which uses linear programming to construct a decision tree. Relevant features were selected using an exhaustive search in the space of 1-4 features and 1-3 separating planes. The actual linear program used to obtain the separating plane in the 3-dimensional space is that described in: [K. P. Bennett and O. L. Mangasarian: "Robust Linear Programming Discrimination of Two Linearly Inseparable Sets", Optimization Methods and Software 1, 1992, 23-34]. The Recurrence Surface Approximation (RSA) method is a linear programming model which predicts Time To Recur using both recurrent and nonrecurrent cases. See references (i) and (ii) above for details of the RSA method. This database is also available through the UW CS ftp server: ftp ftp.cs.wisc.edu cd math-prog/cpo-dataset/machine-learn/WPBC/
Has Missing Values?
Yes
Variables Table
| Variable Name | Role | Type | Description | Units | Missing Values |
|---|---|---|---|---|---|
| ID | ID | Integer | no | ||
| Time | Feature | Integer | no | ||
| radius1 | Feature | Continuous | no | ||
| texture1 | Feature | Continuous | no | ||
| perimeter1 | Feature | Continuous | no | ||
| area1 | Feature | Continuous | no | ||
| smoothness1 | Feature | Continuous | no | ||
| compactness1 | Feature | Continuous | no | ||
| concavity1 | Feature | Continuous | no | ||
| concave_points1 | Feature | Continuous | no |
0 to 10 of 35
Additional Variable Information
1) ID number 2) Outcome (R = recur, N = nonrecur) 3) Time (recurrence time if field 2 = R, disease-free time if field 2 = N) 4-33) Ten real-valued features are computed for each cell nucleus: a) radius (mean of distances from center to points on the perimeter) b) texture (standard deviation of gray-scale values) c) perimeter d) area e) smoothness (local variation in radius lengths) f) compactness (perimeter^2 / area - 1.0) g) concavity (severity of concave portions of the contour) h) concave points (number of concave portions of the contour) i) symmetry j) fractal dimension ("coastline approximation" - 1) 34) Tumor size - diameter of the excised tumor in centimeters 35) Lymph node status - number of positive axillary lymph nodes observed at time of surgery
Class Labels
R = recur, N = nonrecur
Dataset Files
| File | Size |
|---|---|
| wpbc.data | 43.2 KB |
| wpbc.names | 5.5 KB |
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pip install ucimlrepo
from ucimlrepo import fetch_ucirepo # fetch dataset breast_cancer_wisconsin_prognostic = fetch_ucirepo(id=16) # data (as pandas dataframes) X = breast_cancer_wisconsin_prognostic.data.features y = breast_cancer_wisconsin_prognostic.data.targets # metadata print(breast_cancer_wisconsin_prognostic.metadata) # variable information print(breast_cancer_wisconsin_prognostic.variables)
Wolberg, W., Street, W., & Mangasarian, O. (1995). Breast Cancer Wisconsin (Prognostic) [Dataset]. UCI Machine Learning Repository. https://doi.org/10.24432/C5GK50.
Creators
William Wolberg
W. Street
Olvi Mangasarian
DOI
License
This dataset is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) license.
This allows for the sharing and adaptation of the datasets for any purpose, provided that the appropriate credit is given.