public void reduceDL(double expFPRate,boolean checkErr){
  boolean needUpdate=false;
  double[] rulesetStat=new double[6];
  for (int j=0; j < m_SimpleStats.size(); j++) {
    rulesetStat[0]+=m_SimpleStats.get(j)[0];
    rulesetStat[2]+=m_SimpleStats.get(j)[2];
    rulesetStat[4]+=m_SimpleStats.get(j)[4];
    if (j == m_SimpleStats.size() - 1) {
      rulesetStat[1]=m_SimpleStats.get(j)[1];
      rulesetStat[3]=m_SimpleStats.get(j)[3];
      rulesetStat[5]=m_SimpleStats.get(j)[5];
    }
  }
  for (int k=m_SimpleStats.size() - 1; k >= 0; k--) {
    double[] ruleStat=m_SimpleStats.get(k);
    double ifDeleted=potential(k,expFPRate,rulesetStat,ruleStat,checkErr);
    if (!Double.isNaN(ifDeleted)) {
      if (k == (m_SimpleStats.size() - 1)) {
        removeLast();
      }
 else {
        m_Ruleset.remove(k);
        needUpdate=true;
      }
    }
  }
  if (needUpdate) {
    m_Filtered=null;
    m_SimpleStats=null;
    countData();
  }
}

public void reduceDL ( double expFPRate , boolean checkErr ) { boolean needUpdate = false ; double [ ] rulesetStat = new double [ 6 ] ; for ( int j = 0 ; j < m_SimpleStats . size ( ) ; j ++ ) { rulesetStat [ 0 ] += m_SimpleStats . get ( j ) [ 0 ] ; rulesetStat [ 2 ] += m_SimpleStats . get ( j ) [ 2 ] ; rulesetStat [ 4 ] += m_SimpleStats . get ( j ) [ 4 ] ; if ( j == m_SimpleStats . size ( ) - 1 ) { rulesetStat [ 1 ] = m_SimpleStats . get ( j ) [ 1 ] ; rulesetStat [ 3 ] = m_SimpleStats . get ( j ) [ 3 ] ; rulesetStat [ 5 ] = m_SimpleStats . get ( j ) [ 5 ] ; } } for ( int k = m_SimpleStats . size ( ) - 1 ; k >= 0 ; k -- ) { double [ ] ruleStat = m_SimpleStats . get ( k ) ; double ifDeleted = potential ( k , expFPRate , rulesetStat , ruleStat , checkErr ) ; if ( ! Double . isNaN ( ifDeleted ) ) { if ( k == ( m_SimpleStats . size ( ) - 1 ) ) { removeLast ( ) ; } else { m_Ruleset . remove ( k ) ; needUpdate = true ; } } } if ( needUpdate ) { m_Filtered = null ; m_SimpleStats = null ; countData ( ) ; } }
try to reduce the dl of the ruleset by testing removing the rules one by one in reverse order and update all the stats
