Re: İlgi: [PHP] a for loop and probability random all i need is make them to reverse
2008/11/22 Tontonq Tontonq <[EMAIL PROTECTED]>:
> sorry i think i did tell u wrong about it problem is not showing name
> of it as exaclty i just wanted give a point to it thats not real
> problem real problem is i want it be more unpossible when i give the
> class's add function's higher value
In that case I would go for an algorithm using some kind of gaussian
distribution, like the Marsaglia polar method [1].
I once wrote something similar to what (I think) you are asking for ...
1) {
$u1 = 1/(rand(1, $likelihood)*$likelihood);
$u2 = 1/(rand(1, $likelihood)*$likelihood);
$v = $u1*$u1 + $u2*$u2;
}
$p = $u1*sqrt((-2)*(log($v)/$v));
return ($p < 0.85) ? 1 : (int)$p;
}
?>
The best return of this function would be 1. Now if you call the
function with a high $likelihood (say 1000 and more) it gets less
likely have 1 returned ( gaussian ).
If you want to decrease the chance of getting values close to 1 then
you will have to increase $likelihood inside the function or
something.
[1] http://en.wikipedia.org/wiki/Marsaglia_polar_method
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İlgi: [PHP] a for loop and probability random all i need is make them to reverse
sorry i think i did tell u wrong about it problem is not showing name
of it as exaclty i just wanted give a point to it thats not real
problem real problem is i want it be more unpossible when i give the
class's add function's higher value
2008/11/22, Yeti <[EMAIL PROTECTED]>:
> That should output the full line now
>
> $prExample = new probabilityRandom;
>
>
> function arasi($a,$b,$data)
> {
> $x = explode($a,$data);
> $z = explode($b,$x[1]);
> $oh = $z[0];
> if($x && $z) { return $oh; } else { return false; }
> }
>
>
> $x="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";
> $x = gzinflate(base64_decode($x));
> $xx=explode("
> ",$x);
> $xcx=array();
>
> foreach($xx as $c => $y)
> {
> $yy = arasi(" in ",")",$y);
> $yy = str_replace(",","",$yy);
> $xcx[]=$yy;
> #echo $yy."";
> $itemisim = explode("(",$y);
> $itemisim=$itemisim[0];
> $xcx[isim][]=$itemisim;
> }
> for($i=0;$i<=count($xcx)-1;$i++)
> {
> $prExample->add( $xx[$i], $xcx[$i] ); // <-- changed to $xx[i]
> }
> print $prExample->get();
>
> class probabilityRandom {
> #private vars
> var
> $data = array(),
> $universe = 0;
> #add an item to the list and defines its probability of beeing chosen
> function add( $data, $probability ){
> $this->data[ $x = sizeof( $this->data ) ] = new stdClass;
> $this->data[ $x ]->value = $data;
> $this->universe += $this->data[ $x ]->probability = abs( $probability );
> }
> #remove an item from the list
> function remove( $index ){
> if( $index > -1 && $index < sizeof( $this->data ) ) {
> $item = array_splice( $this->data, $index, 1 );
> $this->universe -= $item->probability;
> }
> }
> #clears the class
> function clear(){
> $this->universe = sizeof( $this->data = array() );
> }
> #return a randomized item from the list
> function get(){
> if( !$this->universe )
> return null;
> $x = round( mt_rand( 0, $this->universe ) );
> $max = $i = 0;
> do
> $max += $this->data[ $i++ ]->probability;
> while( $x > $max );
> return $this->data[ $i-1 ]->value;
> }
> }
> ?>
>
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Re: [PHP] a for loop and probability random all i need is make them to reverse
That should output the full line now
$y)
{
$yy = arasi(" in ",")",$y);
$yy = str_replace(",","",$yy);
$xcx[]=$yy;
#echo $yy."";
$itemisim = explode("(",$y);
$itemisim=$itemisim[0];
$xcx[isim][]=$itemisim;
}
for($i=0;$i<=count($xcx)-1;$i++)
{
$prExample->add( $xx[$i], $xcx[$i] ); // <-- changed to $xx[i]
}
print $prExample->get();
class probabilityRandom {
#private vars
var
$data = array(),
$universe = 0;
#add an item to the list and defines its probability of beeing chosen
function add( $data, $probability ){
$this->data[ $x = sizeof( $this->data ) ] = new stdClass;
$this->data[ $x ]->value = $data;
$this->universe += $this->data[ $x ]->probability = abs( $probability );
}
#remove an item from the list
function remove( $index ){
if( $index > -1 && $index < sizeof( $this->data ) ) {
$item = array_splice( $this->data, $index, 1 );
$this->universe -= $item->probability;
}
}
#clears the class
function clear(){
$this->universe = sizeof( $this->data = array() );
}
#return a randomized item from the list
function get(){
if( !$this->universe )
return null;
$x = round( mt_rand( 0, $this->universe ) );
$max = $i = 0;
do
$max += $this->data[ $i++ ]->probability;
while( $x > $max );
return $this->data[ $i-1 ]->value;
}
}
?>
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[PHP] a for loop and probability random all i need is make them to reverse
i want it returns *Raptor +1 (1 in 62,000) *
but it returns me nearly everytime how can i make them reverse help me
please
index.php >
$y)
{
$yy = arasi(" in ",")",$y);
$yy = str_replace(",","",$yy);
$xcx[]=$yy;
#echo $yy."";
$itemisim = explode("(",$y);
$itemisim=$itemisim[0];
$xcx[isim][]=$itemisim;
}
for($i=0;$i<=count($xcx)-1;$i++)
{
$prExample->add( $xcx[isim][$i], $xcx[$i] );
}
print $prExample->get();
?>
lib.probabilityRandom.php
>
http://www.joninhas.ath.cx:666
- CLASS ---
My user account at phpclasses.org
http://www.phpclasses.org/browse.html/author/84147.html
Get the latest version of this class at:
http://www.phpclasses.org/browse.html/package/1940.html
- VERSION & HISTORY ---
v1.0
2004-10-31 - Class creation
-
**/
class probabilityRandom {
#private vars
var
$data = array(),
$universe = 0;
#add an item to the list and defines its probability of beeing chosen
function add( $data, $probability ){
$this->data[ $x = sizeof( $this->data ) ] = new stdClass;
$this->data[ $x ]->value = $data;
$this->universe += $this->data[ $x ]->probability = abs( $probability );
}
#remove an item from the list
function remove( $index ){
if( $index > -1 && $index < sizeof( $this->data ) ) {
$item = array_splice( $this->data, $index, 1 );
$this->universe -= $item->probability;
}
}
#clears the class
function clear(){
$this->universe = sizeof( $this->data = array() );
}
#return a randomized item from the list
function get(){
if( !$this->universe )
return null;
$x = round( mt_rand( 0, $this->universe ) );
$max = $i = 0;
do
$max += $this->data[ $i++ ]->probability;
while( $x > $max );
return $this->data[ $i-1 ]->value;
}
}
?>
