

   BBiiooppssyy DDaattaa oonn BBrreeaasstt CCaanncceerr PPaattiieennttss

   AArrgguummeennttss::

         ID: Sample code number (not unique)

         V1: Clump thickness

         V2: Uniformity of cell size

         V3: Uniformity of cell shape

         V4: Marginal adhesion

         V5: Single epithelial cell size

         V6: Bare nuclei (16 values are missing)

         V7: Bland chromatin

         V8: Normal nucleoli

         V9: Mitoses

      class: `"benign"' or `"malignant"'

   SSUUMMMMAARRYY::

        This breast cancer database was obtained from the Uni-
        versity of Wisconsin Hospitals, Madison from Dr.
        William H. Wolberg. He assessed biopsies of breast
        tumours for 699 patients up to 15 July 1992; each of
        nine attributes has been scored on a scale of 1 to 10,
        and the outcome is also known. There are 699 rows and
        11 columns.

   DDAATTAA DDEESSCCRRIIPPTTIIOONN::

        This data frame contains the following columns:

   SSOOUURRCCEE::

        P. M. Murphy and D. W. Aha  (1992). UCI Repository of
        machine learning databases. [Machine-readable data
        repository]. Irvine, CA: University of California,
        Department of Information and Computer Science.

        O. L. Mangasarian and W. H. Wolberg (1990) Cancer diag-
        nosis via linear programming.  SIAM News 23, pp 1  18.

        William H. Wolberg and O.L. Mangasarian (1990) Multi-
        surface method of pattern separation for medical diag-
        nosis applied to breast cytology.  Proceedings of the
        National Academy of Sciences, U.S.A., 87,  pp
        9193-9196.

        O. L. Mangasarian, R. Setiono and W.H. Wolberg (1990)
        Pattern recognition via linear programming: Theory and
        application to medical diagnosis.  In Large-scale
        Numerical Optimization eds Thomas F. Coleman and Yuying
        Li, SIAM Publications, Philadelphia, pp 22-30.

        K. P. Bennett and O. L. Mangasarian (1992) Robust lin-
        ear programming discrimination of two linearly insepa-
        rable sets.  Optimization Methods and Software 1, pp.
        23-34 (Gordon  Breach Science Publishers).

