Breast Cancer Wisconsin (Original) Data Set Performing PCA
Data Set Information:
Link : https://archive.ics.uci.edu/ml/datasets/breast+cancer+wisconsin+(original)
Breast Cancer Wisconsin (Original) Data Set Download: Data Folder, Data Set Description
Abstract: Original Wisconsin Breast Cancer Database
Data Set Characteristics:
Multivariate
Number of Instances:
699
Area:
Life
Attribute Characteristics:
Integer
Number of Attributes:
10
Date Donated
1992-07-15
Associated Tasks:
Classification
Missing Values?
Yes
Number of Web Hits:
545407
Source:
Creator:
Dr. WIlliam H. Wolberg (physician) University of Wisconsin Hospitals Madison, Wisconsin, USA
Donor:
Olvi Mangasarian (mangasarian '@' cs.wisc.edu) Received by David W. Aha (aha '@' cs.jhu.edu)
Data Set Information:
Samples arrive periodically as Dr. Wolberg reports his clinical cases. The database therefore reflects this chronological grouping of the data. This grouping information appears immediately below, having been removed from the data itself:
Group 1: 367 instances (January 1989) Group 2: 70 instances (October 1989) Group 3: 31 instances (February 1990) Group 4: 17 instances (April 1990) Group 5: 48 instances (August 1990) Group 6: 49 instances (Updated January 1991) Group 7: 31 instances (June 1991) Group 8: 86 instances (November 1991)
Total: 699 points (as of the donated datbase on 15 July 1992)
Note that the results summarized above in Past Usage refer to a dataset of size 369, while Group 1 has only 367 instances. This is because it originally contained 369 instances; 2 were removed. The following statements summarizes changes to the original Group 1's set of data:
Attribute Information:
- Sample code number: id number
- Clump Thickness: 1 - 10
- Uniformity of Cell Size: 1 - 10
- Uniformity of Cell Shape: 1 - 10
- Marginal Adhesion: 1 - 10
- Single Epithelial Cell Size: 1 - 10
- Bare Nuclei: 1 - 10
- Bland Chromatin: 1 - 10
- Normal Nucleoli: 1 - 10
- Mitoses: 1 - 10
- Class: (2 for benign, 4 for malignant)