scikit-learn/breast-cancer-wisconsin

Breast Cancer Wisconsin Diagnostic Dataset

Following description was retrieved from breast cancer dataset on UCI machine learning repository).

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 here.

Separating plane described above was obtained using Multisurface Method-Tree (MSM-T), 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].

Attribute Information:

• —ID number
• —Diagnosis (M = malignant, B = benign)

Ten real-valued features are computed for each cell nucleus:

• —radius (mean of distances from center to points on the perimeter)
• —texture (standard deviation of gray-scale values)
• —perimeter
• —area
• —smoothness (local variation in radius lengths)
• —compactness (perimeter^2 / area - 1.0)
• —concavity (severity of concave portions of the contour)
• —concave points (number of concave portions of the contour)
• —symmetry
• —fractal dimension ("coastline approximation" - 1)