grow

本程序是基于linux系统下c++代码

grow              package:randomForest              R Documentation

_A_d_d _t_r_e_e_s _t_o _a_n _e_n_s_e_m_b_l_e

_D_e_s_c_r_i_p_t_i_o_n:

     Add additional trees to an existing ensemble of trees.

_U_s_a_g_e:

     ## S3 method for class 'randomForest':
     grow(x, how.many, ...)

_A_r_g_u_m_e_n_t_s:

       x: an object of class 'randomForest', which contains a 'forest'
          component.

how.many: number of trees to add to the 'randomForest' object.

     ...: currently ignored.

_V_a_l_u_e:

     An object of class 'randomForest', containing 'how.many'
     additional trees.

_N_o_t_e:

     The 'confusion', 'err.rate', 'mse' and 'rsq' components (as well
     as the corresponding components in the 'test' compnent, if exist)
     of the combined object will be 'NULL'.

_A_u_t_h_o_r(_s):

     Andy Liaw [e-mail]

_S_e_e _A_l_s_o:

     'combine', 'randomForest'

_E_x_a_m_p_l_e_s:

     data(iris)
     iris.rf <- randomForest(Species ~ ., iris, ntree=50, norm.votes=FALSE)
     iris.rf <- grow(iris.rf, 50)
     print(iris.rf)