用于作业辅助分析的程序源代码

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October 4, 2006 @ 12:52, Robin Hoo

data.php

assignment.php

<?php
require_once("data.php");
$total=count($$item[0]);
$result_array=array();
$step=count($item);
print "Aprori\n";
print "=======================================================\n";
for($i=0;$i<$step;$i++)
{
  $temp_array=array();
  $cmd_array=apriori($item,count($item),$i+1);
  foreach($cmd_array as $cmd) eval($cmd);
  if (count($temp_array)==0)
  {
    if (count($result_array)==0) die("No interesting item found!\n");
    break;  
  }
  $temp_array=output_array($temp_array,$i+1,"C",$support,$total);
  if (count($temp_array)==0)
  {
    if (count($result_array)==0) die("No interesting item found!\n");
    break;  
  }
  $result_array=array();
  $result_array=output_array($temp_array,$i+1,"L",$support,$total);
  $item=array();
  $keys=array_keys($result_array);
  foreach($keys as $item[])
  $item=array_unique($item);
  sort($item);
}
print "=======================================================\n\n";
print "Seek Rules\n";
$temp_array=array();
$temp_array=$result_array;
$cmd_array=seek_rules($result_array,$i);
$result_array=array();
foreach($cmd_array as $cmd) eval($cmd);
output_rules($result_array,$confidence);
$temp_array=array();
for($i=0;$i<count($result_array);$i++) if ($result_array[$i][3]>=$confidence*100) $temp_array[]=$result_array[$i];
output_rules($temp_array,$confidence);

function filter($var)
{
  return ($var=='T');
}

function map_rest($value,$items)
{
  $temp_array=array();
  $temp_array=explode(",",$value);
  $string="";
  for($i=0;$i<count($items);$i++)
  {
    if (array_search($items[$i],$temp_array)===false) $string.=$items[$i].",";
  }
  return trim(substr($string,0,strlen(trim($string))-1));
  
}

function output_rules($array,$confidence)
{
  $maxlen=0;
  for($i=0;$i<count($array);$i++) if ($maxlen<strlen($array[$i][0])) $maxlen=strlen($array[$i][0]);
  for($i=0;$i<count($array);$i++) if ($maxlen<strlen($array[$i][1])) $maxlen=strlen($array[$i][1]);
  print str_repeat(" ",strlen(count($array)))." ".str_pad("LHS",$maxlen," ",STR_PAD_BOTH)."    ".str_pad("RHS",$maxlen," ",STR_PAD_BOTH)."Exp Conf(%) Conf (%)  Life  Supp(%)\n"; 
  print str_repeat("=",2*$maxlen+5+strlen(count($array))+strlen("Exp Conf(%) Conf (%)  Life  Supp(%)"))."\n";
  for($i=0;$i<count($array);$i++)
  {
    print str_pad($i+1,strlen(count($array))," ",STR_PAD_LEFT)." ";
    print str_pad($array[$i][0],$maxlen," ",STR_PAD_RIGHT)." -> ".str_pad($array[$i][1],$maxlen," ",STR_PAD_RIGHT)."    ".str_pad(number_format($array[$i][2], 2, '.', ''),6," ",STR_PAD_LEFT)."%  ".str_pad(number_format($array[$i][3], 2, '.', ''),6," ",STR_PAD_LEFT)."%  ".str_pad(number_format($array[$i][4], 2, '.', ''),6," ",STR_PAD_LEFT)." ".str_pad(number_format($array[$i][5], 2, '.', ''),6," ",STR_PAD_LEFT)."%";
    if ($array[$i][3]>=$confidence*100) print "*";
    print "\n";
  }
  print str_repeat("=",2*$maxlen+5+strlen(count($array))+strlen("Exp Conf(%) Conf (%)  Life  Supp(%)"))."\n\n";
  
}
?>

最后编辑： Robin Hoo 编辑于2007/08/12 06:54

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