
  lleessiioonnUUnniittss -- iinnaaccttiivvaatteess aa ppeerrcceennttaaggee ooff tthhee uunniittss iinn aa ggrroouupp

  UUSSAAGGEE

        lesionUnits (<group-list> <proportion> | <unit-list>)

  DDEESSCCRRIIPPTTIIOONN

  With a group list and proportion specified this will lesion each unit in
  the groups with probability 100 x proportion. It is not guaranteed that
  exactly (100 x proportion)% of the units will be affected.

  With a unit list specified, it just lesions those units.

  A lesioned unit will have 0 output and outputDeriv. All other values and
  value histories will be NaN. It will not compute its input or output or
  their reverses during forward and backward passes. Lesioned output units
  will not contribute to the error.

  EEXXAAMMPPLLEESS

  To lesion approximately half the units in the "hidden" group:

        lens> lesionUnits hidden 0.5

  To lesion the unit "output:0":

        lens> lesionUnits output:0

  SSEEEE AALLSSOO

  _h_e_a_l_U_n_i_t_s, _l_e_s_i_o_n_L_i_n_k_s, _n_o_i_s_e_T_y_p_e

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    Last modified: Sun Feb 28 21:34:55 EST 1999

