public void clearRow(int nodeIndex,int rowIndex){
  for (int colIndex=0; colIndex < getNumColumns(nodeIndex); colIndex++) {
    setProbability(nodeIndex,rowIndex,colIndex,Double.NaN);
  }
}

public void clearRow ( int nodeIndex , int rowIndex ) { for ( int colIndex = 0 ; colIndex < getNumColumns ( nodeIndex ) ; colIndex ++ ) { setProbability ( nodeIndex , rowIndex , colIndex , Double . NaN ) ; } }
assigns random probability values to the child values of this row that add to 1 .
