qpImportNrr             package:qpgraph             R Documentation

_I_m_p_o_r_t _n_o_n-_r_e_j_e_c_t_i_o_n _r_a_t_e_s

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

     Imports non-rejection rates from an external flat file.

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

     qpImportNrr(filename, nTests)

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

filename: name of the flat file with the data on the non-rejection
          rates.

  nTests: number of tests performed in the estimation of these
          non-rejection rates.

_D_e_t_a_i_l_s:

     This function expects a flat file with three tab-separated columns
     corresponding to, respectively, 0-based index of one of the
     variables, 0-based index of the other variable, number of
     non-rejected tests for the pair of variables of that row in the
     text file. An example of a few lines of that file would be:


     6       3       95
     6       4       98
     6       5       23
     7       0       94
     7       1       94

     After reading the file the function builds a matrix of
     non-rejection rates by dividing the number of non-rejected tests
     by 'nTests'. Note that if the flat file to be imported would
     eventually have directly the rates instead of the number of tests,
     these can be also imported by setting 'nTests=1'.

     This function is thought to be used to read files obtained from
     the standalone parallel version of 'qpNrr' which can be downloaded
     from <URL: http://functionalgenomics.upf.edu/qp>.

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

     A symmetric matrix of non-rejection rates with the diagonal set to
     the 'NA' value.

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

     R. Castelo and A. Roverato

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

     Castelo, R. and Roverato, A. A robust procedure for Gaussian
     graphical model search from microarray data with p larger than n,
     _J. Mach. Learn. Res._, 7:2621-2650, 2006.

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

     'qpNrr'

