biopsy                 package:MASS                 R Documentation

_B_i_o_p_s_y _D_a_t_a _o_n _B_r_e_a_s_t _C_a_n_c_e_r _P_a_t_i_e_n_t_s

_D_e_s_c_r_i_p_t_i_o_n:

     This breast cancer database was obtained from the University 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.

_A_r_g_u_m_e_n_t_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"' 

_F_o_r_m_a_t:

     This data frame contains the following columns:

_S_o_u_r_c_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 diagnosis via
     linear programming. SIAM News 23, pp 1 & 18.

     William H. Wolberg and O.L. Mangasarian (1990) Multisurface method
     of pattern separation for medical diagnosis 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 linear
     programming discrimination of two linearly inseparable sets.
     Optimization Methods and Software 1, pp. 23-34 (Gordon & Breach
     Science Publishers).

