commit 81586a49c523ea29fe02cd1475568b5de3204861
parent 1d0ed53d47e15f007fd55223c7d12a1af4762779
Author: NunoSempere <nuno.sempere@protonmail.com>
Date: Sun, 29 Jan 2023 14:13:09 +0100
tweak: remove old index.
Diffstat:
| D | index_old.php | | | 238 | ------------------------------------------------------------------------------- |
1 file changed, 0 insertions(+), 238 deletions(-)
diff --git a/index_old.php b/index_old.php
@@ -1,238 +0,0 @@
-<?php
-
-/*
-
-* File: /shapleyvalue/calculator
-* By: Nuño Sempere
-* Date: 23 Sept 2019
-*
-* This file calculates the Shapley value of every member of a given coalition.
-
-*/
-
-
-## HTML Flavor
-
-echo '<html>';
-
-echo '<head>
- <title>Shapley Value Calculator</title>
- <meta name="copyright" content="Nuño Sempere López-Hidalgo">
- <meta name="keywords" content="Shapley Value, Shapley value, calculate Shapley value, calculate Shapley value online free, Shapley value program">
- <meta name="description" content="Shapley value calculator">
- <link rel="stylesheet" href="CSS/main.css" type="text/css">';
- // This is the reference to our CSS style sheet.'
-echo '</head>';
-
-echo '<body>';
-
-echo '<h1> Shapley Value Calculator </h1>';
-
-
-## Pointer to this file
-
-$thisFile = "index.php";
-
-## Decide the Number of Players
-
-$numPlayers = $_POST["numplayers"] ?? 3;
- // It sees what number of players the user has selected.
- // If it's the first time the user comes to the webpage, the default will be 3
-
-
-echo "<form action=".$thisFile." method='post'>
- <select name='numplayers'>";
-
- for($n = 1; $n<8; $n++){
-
- if($n == $numPlayers){
- $hasBeenSelected = "selected = 'selected'";
- }else{
- $hasBeenSelected = "";
- }
- echo "<option value =".$n." ".$hasBeenSelected.">Number of players: ".$n."</option>";
- }
-
- echo "</select>";
- echo " ";
- echo "<input type='submit' value='Change' class = 'Buttons'>";
- echo "</form>";
-
-## Power set of all players
-
-for($n = 1; $n <= $numPlayers; $n++){
- $setOfPlayers[$n] = $n;
-}
-
-$powerSet = powerSet($setOfPlayers);
-
-$i = 0;
-foreach($powerSet as $set){
-
- $powerSetAsStrings[$i] = setToString($set);
- $i++;
-}
-
-
-## Forms for the value of the coalition
-
-$getCoalitionNum = $_POST['CoalitionNum']?? 0;
-
-if($getCoalitionNum == 0){
- //That is, if we haven't yet posted anything to ourselves regarding the size of the coalition
- echo '<form action='.$thisFile.' method = "post">';
- echo '<div class="form">';
-
-
- echo '<input type="hidden" name="numplayers" value='.$numPlayers.' />';
- $i = 0;
- foreach($powerSetAsStrings as $setAsString){
-
- echo '<p>';
- echo '<label>Value of coalition '.$setAsString.': </label>';
- echo '<input type="number" name="CoalitionNum['.$i.']" value = "0" class = "Box">';
- echo '</p>';
- $i++;
- }
- echo '</br>';
-
- echo '</div>';
- echo '<input type="submit" value="Compute" class="Buttons" >';
- echo '</form>';
-
-}else{
-
- echo '<form action='.$thisFile.' method = "post">';
-
- echo '<input type="hidden" name="numplayers" value='.$numPlayers.' />';
-
- echo '<div class="form">';
- $i = 0;
- foreach($powerSetAsStrings as $setAsString){
-
- echo '<p>';
- echo '<label>Value of coalition '.$setAsString.': </label>';
- echo '<input type="number" name="CoalitionNum['.$i.']" value ='.$getCoalitionNum[$i].' class = "Box">';
- echo '</p>';
- $i++;
- }
- echo '</br>';
-
- echo '</div>';
- echo '<input type="submit" value="Compute" class="Buttons" >';
- echo '</form>';
-
-
-## Compute the Shapley values
-// Now, we have posted our data to ourselves. Note that we're still inside the else{} part of the loop
-// All that remains is to do the actual calculations.
-
-$i = 0;
-
-/*
-
-Reminder
-
-numPlayers: number of players
-setOfPlayers: Numbers from 1 to n
-powerSet: The power set of the above. All the different possible combinations.
-getCoalitionNum: The value of coalitions 1 through 2^#
-*/
-
-
-$i = 0;
-
-for($n = 0; $n<$numPlayers; $n++){
- $Impact[$n] = 0;
-}
-
-foreach($powerSet as $set){
- // in_array() function: will be useful. https://www.php.net/manual/es/function.in-array.php
-
- $size = sizeof($set);
- if($size !=0){
- foreach($set as $player){
-
- $marginalImpact = $getCoalitionNum[$i] - $getCoalitionNum[$i - pow(2,($player-1) ) ];
- $Impact[$player-1] += $marginalImpact / choose($size-1,$numPlayers-1);
- }
- }
-
- $i++;
-
-}
-
-echo '<p>';
-for($n=1; $n <=$numPlayers; $n++){
- echo "The Shapley value of player ".$n." is: ".$Impact[$n-1]/$numPlayers."</br>";
-}
-echo '</p>';
-
-} // this is the end of the else{} part of the "have we posted any data to ourselves yet" question. Only executes if we indeed have.
-
-
-## More HTML flavor
-//echo '<h3>Also of interest:</h3>
-// <a href="url">Shapley value resources</a> </br>'
-echo '<p>';
-echo '<br /></br>';
-echo '<a href="https://nunosempere.github.io/">Other things I have done</a> </br>';
-echo '</p>';
-echo '</body>';
-echo '</html>';
-
-
-## Functions
-
-function powerSet($array){
-
- $results = array(array());
- foreach($array as $element){
- foreach($results as $combination){
- array_push($results, array_merge(array($element), $combination));
- }
- }
- return $results;
- // https://docstore.mik.ua/orelly/webprog/pcook/ch04_25.htm
-}
-
-
-
-function setToString($set){
-
- $size = sizeof($set);
-
- if($size == 0){
-
- return "{}";
-
- }else{
- $return = "{";
- for($i=0; $i<$size-1; $i++){
- $return .= $set[$i].", ";
- }
- $return .= $set[$i]."}";
- return $return;
- }
-}
-
-function factorial($n){
- if($n == 0){
- return 1;
- }else{
-
- $f = 1;
- for($i=$n; $i>=1;$i--){
- $f *= $i;
- }
- return $f;
- }
-}
-
-function choose($m, $n){
- // Choose n objects among m choices
- return factorial($n) / (factorial($m)*factorial($n-$m));
-
-}
-
-?>
