kfa-class              package:kernlab              R Documentation

_C_l_a_s_s "_k_f_a"

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

     The class of the object returned by the Kernel Feature Analysis
     'kfa' function

_O_b_j_e_c_t_s _f_r_o_m _t_h_e _C_l_a_s_s:

     Objects can be created by calls of the form 'new("kfa", ...)' or
     by calling the 'kfa' method. The objects contain the features
     along with the alpha values.

_S_l_o_t_s:

     '_a_l_p_h_a': Object of class '"matrix"' containing the alpha values 

     '_a_l_p_h_a_i_n_d_e_x': Object of class '"vector"' containing the indexes of
          the selected feature

     '_k_e_r_n_e_l_f': Object of class '"kfunction"' containing the kernel
          function used

     '_x_m_a_t_r_i_x': Object of class '"matrix"' containing the selected
          features

     '_k_c_a_l_l': Object of class '"call"' containig the 'kfa' function
          call

     '_t_e_r_m_s': Object of class '"ANY"' containing the formula terms

_M_e_t_h_o_d_s:

     _a_l_p_h_a 'signature(object = "kfa")': returns the alpha values 

     _a_l_p_h_a_i_n_d_e_x 'signature(object = "kfa")': returns the index of the
          selected features

     _k_c_a_l_l 'signature(object = "kfa")': returns the function call 

     _k_e_r_n_e_l_f 'signature(object = "kfa")': returns the kernel function
          used 

     _p_r_e_d_i_c_t 'signature(object = "kfa")': used to embed more data
          points to the feature base

     _x_m_a_t_r_i_x 'signature(object = "kfa")': returns the selected
          features. 

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

     Alexandros Karatzoglou
      alexandros.karatzoglou@ci.tuwien.ac.at

_S_e_e _A_l_s_o:

     'kfa', 'kpca-class'

_E_x_a_m_p_l_e_s:

     data(promotergene)
     f <- kfa(~.,data=promotergene)

