variance,RepeatRanking     package:GeneSelector     R Documentation

_C_o_m_p_u_t_e _g_e_n_e_w_i_s_e _v_a_r_i_a_n_c_e_s _f_o_r _r_a_n_k_s

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

     One application of resampling methods is estimation of variance.
     Here, variance refers to ranks, computed genewise. Three different
     measures are implemented: ordinary variance, (squared)'mad' and
     the interquartile range ('IQR')

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

     variance(RR, estimator = c("var", "mad", "iqr"), center = c("perturbed", "original"))

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

      RR: An object of class 'RepeatRanking'

estimator: Specifies the variance estimator, one of 'var' (usual
          variance estimator), 'mad' (squared median absolute
          deviation), 'iqr' (interquartile range)

  center: Estimator for the location (mean) parameter to be used. Can
          be either the rank from the original dataset or the average
          rank among all perturbed datasets.

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

     A numeric vector containing the estimated variances corresponding
     to each gene, ordered according to the gene ranking performed  on
     the original dataset.

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

     Martin Slawski martin.slawski@campus.lmu.de 
      Anne-Laure Boulesteix <URL: http://www.slcmsr.net/boulesteix>

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

     GeneRanking

