caha                  package:SAGx                  R Documentation

_C_l_u_s_t_e_r_i_n_g _G_o_o_d_n_e_s_s _m_e_a_s_u_r_e_d _b_y _t_h_e _C_a_l_i_n_s_k_i-_H_a_r_a_b_a_s_z _i_n_d_e_x

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

     Calculates a goodness of clustering measure based the ratio of
     between to within sum squares:

                        caha=BSS*n/[WSS*(n-k)]

_U_s_a_g_e:

     caha(data,cluster)

_A_r_g_u_m_e_n_t_s:

    data: The data matrix

 cluster: a vector descibing the cluster memberships consecutive
          numbers.

_V_a_l_u_e:

     The Calinski-Harabasz index

_A_u_t_h_o_r(_s):

     Per Broberg

_R_e_f_e_r_e_n_c_e_s:

     Calinski, R.B. and Harabasz, J. (1974) A dendrite method for
     cluster analysis,  _Communications in statistics_ 3, 1-27

