Glass                package:mlbench                R Documentation

_G_l_a_s_s _I_d_e_n_t_i_f_i_c_a_t_i_o_n _D_a_t_a_b_a_s_e

_D_e_s_c_r_i_p_t_i_o_n:

     A data frame with 214 observation containing examples of the
     chemical analysis of 7 different types of glass. The problem is to
     forecast the type of class on basis of the chemical analysis.  The
     study of classification of types of glass was motivated by
     criminological investigation.  At the scene of the crime, the
     glass left can be used as evidence (if it is correctly
     identified!).

_U_s_a_g_e:

     data(Glass)

_F_o_r_m_a_t:

     A data frame with 214 observations on 10 variables:

       [,1]   RI    refractive index
       [,2]   Na    Sodium
       [,3]   Mg    Magnesium
       [,4]   Al    Aluminum
       [,5]   Si    Silicon
       [,6]   K     Potassium
       [,7]   Ca    Calcium
       [,8]   Ba    Barium
       [,9]   Fe    Iron
       [,10]  Type  Type of glass (class attribute)

_S_o_u_r_c_e:

        *  Creator: B. German, Central Research Establishment, Home
           Office Forensic Science Service, Aldermaston, Reading,
           Berkshire RG7 4PN 

        *  Donor: Vina Spiehler, Ph.D., DABFT, Diagnostic Products
           Corporation

     These data have been taken from the UCI Repository Of Machine
     Learning Databases at

        *  <URL: ftp://ftp.ics.uci.edu/pub/machine-learning-databases>

        *  <URL: http://www.ics.uci.edu/~mlearn/MLRepository.html>

     and were converted to R format by
     Friedrich.Leisch@ci.tuwien.ac.at.

