Backpropagation

<?php
session_start();
SET_TIME_LIMIT(2400);
include_once "classes/db.class.php";
include_once "classes/hak-akses.inc.php";
include_once "classes/template.class.php";
include_once "classes/class.file.php";
include_once "pagination.php";
include_once "ekstraksiPelatihan.function.php";
include_once "kuda.php";
$db = new DB();
$file = new File();
kickView($hakAkses[$_SESSION['hak']]);
kickManage($hakAkses[$_SESSION['hak']]);

if (! class_exists('BackProp')) { Class BackProp {

function import($data){
    $this->x = $data->x;
    $this->z = $data->z;
    $this->y = $data->y;
    $this->minInput = $data->minInput;
    $this->maxInput = $data->maxInput;
    $this->minTarget = $data->minTarget;
    $this->maxTarget = $data->maxTarget;
    $this->v = $data->v;
    $this->w = $data->w;
}

function export(){
    return (object) array(
        'x'=>$this->x,
        'z'=>$this->z,
        'y'=>$this->y,
        'minInput'=>$this->minInput,
        'maxInput'=>$this->maxInput,
        'minTarget'=>$this->minTarget,
        'maxTarget'=>$this->maxTarget,
        'v'=>$this->v,
        'w'=>$this->w
    );
}

function setInputTarget($it){
    $this->input = $this->target = array();
    foreach (func_num_args()==1 ? $it : func_get_args() as $k=>$v){
        if ($k % 2 == 0){
            $this->input[] = $v;
        } else {
            $this->target[] = $v;
        }
    }
    $this->x = $this->input[0];
        $this->x[] = $this->BIAS;
    $this->y = $this->target[0];
    $this->nTrainings = count($this->target);
}

function normalize(){
    $this->nInput = $this->nTarget = array();
    $this->maxInput = $this->minInput = array();
    $this->maxTarget = $this->minTarget = array();
    foreach ($this->input as $k=>$v){
        if ($k == 0)
            $this->maxInput = $this->minInput = $v;
        else foreach ($v as $kk=>$vv){
            $this->maxInput[$kk] = max($this->maxInput[$kk], $vv);
            $this->minInput[$kk] = min($this->minInput[$kk], $vv);
        }
    }
    foreach ($this->target as $k=>$v){
        if ($k == 0)
            $this->maxTarget = $this->minTarget = $v;
        else foreach ($v as $kk=>$vv){
            $this->maxTarget[$kk] = max($this->maxTarget[$kk], $vv);
            $this->minTarget[$kk] = min($this->minTarget[$kk], $vv);
        }
    }
    foreach ($this->input as $k=>$v)
        foreach ($v as $kk=>$vv)
            $this->nInput[$k][$kk] = ($vv-$this->minInput[$kk])/($this->maxInput[$kk]-$this->minInput[$kk]);
    foreach ($this->target as $k=>$v)
        foreach ($v as $kk=>$vv)
            $this->nTarget[$k][$kk] = ($vv-$this->minTarget[$kk])/($this->maxTarget[$kk]-$this->minTarget[$kk]) * 0.5 + 0.25;
}

function setInput($input){
    $this->x = array();
    foreach ($input as $k=>$v)
        $this->x[] = ($v-$this->minInput[$k])/($this->maxInput[$k]-$this->minInput[$k]);
    $this->x[] = $this->BIAS;
}

function getOutput(){
    $ret = $this->y;
    foreach ($ret as $k=>$v)
        $ret[$k] = 2 * ($v - 0.25) * ($this->maxTarget[$k]-$this->minTarget[$k]) + $this->minTarget[$k];
    return $ret;
}

function setHidden($n){
    $this->z = array();
    for ($i=0; $i<=$n; $i++)
        $this->z[] = $this->BIAS;
}

function randomWeight(){
    $this->v = $this->w = array();
    foreach ($this->x as $i=>$x) foreach ($this->z as $j=>$z){
        if ($j == count($this->z) - 1) continue;
        $this->v[$i][$j] = (rand(0, 1000) - 500) / 500;
    }
    foreach ($this->z as $i=>$z)
        foreach ($this->y as $j=>$y)
            $this->w[$i][$j] = (rand(0, 1000) - 500) / 500;
}

function loadNthTrainData($which){
    $this->x = $this->nInput[$which];
        $this->x[] = $this->BIAS;
    $this->t = $this->nTarget[$which];
}

function goForward(){
    foreach ($this->z as $j=>$z){
        if ($j == count($this->z) - 1) continue;
        $temp = 0;
        foreach ($this->x as $i=>$x)
            $temp += $x * $this->v[$i][$j];
        $this->z[$j] = 1 / (1 + exp(- $temp));
    }
    foreach ($this->y as $j=>$y){
        $temp = 0;
        foreach ($this->z as $i=>$z)
            $temp += $z * $this->w[$i][$j];
        $this->y[$j] = 1 / (1 + exp(- $temp));
    }
}

public $ALPHA = 0.2;
public $BIAS = 0.5;
function goBackward(){
    $this->se = 0;
    $old_w = $this->w;
    foreach ($this->y as $k=>$y){
        $this->se += ($this->t[$k] - $y) * ($this->t[$k] - $y);
        $delta_w[$k] = ($this->t[$k] - $y) * $y * (1 - $y);
        foreach ($this->z as $j=>$z)
            $this->w[$j][$k] += $this->ALPHA * $delta_w[$k] * $z;
    }
    foreach ($this->z as $j=>$z){
        if ($j == count($this->z) - 1) continue;
        $delta_v[$j] = 0;
        foreach ($this->y as $k=>$y)
            $delta_v[$j] += $delta_w[$k] * $old_w[$j][$k];
        $delta_v[$j] = $delta_v[$j] * $z * (1 - $z);
        foreach ($this->x as $i=>$x)
            $this->v[$i][$j] += $this->ALPHA * $delta_v[$j] * $x;
    }
}

}}
$bp = new BackProp();
Template::head($db,$file, $hakAkses);

?>
<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
    <script src="plugins/datepicker/bootstrap-datepicker.js"></script>
    <div class="content-wrapper">
        <section class="content-header">
            <h1 style="float: left;margin-right: 10px !important;">
                Pelatihan Jaringan Syaraf Tiruan
            </h1>
        </section>
        <section class="content">
            <div class="row">
                <div class="col-lg-12">
                    <?php showMessageAndErrors($message,$error);?>
                    <div class="nav-tabs-custom">
                        <ul class="nav nav-tabs">
                            <li ><a href="parameter-pengujian-produk.php?produk=<?=$_REQUEST['idProduk'];?>&size=<?=$_REQUEST['idSize'];?>&outlet=<?=$_REQUEST['idOutlet']?>&idPelatihan=<?=$_REQUEST['idPelatihan'];?>">Parameter</a></li>
                            <li class="active"><a href="#ekstraksi-pelatihan" data-toggle="tab">Ekstraksi</a></li>
                            <li><a  href="hasil-pelatihan-pengujian.php?idPelatihan=<?=($_REQUEST['idPelatihan']) ? $_REQUEST['idPelatihan'] : ''?>">Hasil</a></li>
                        </ul>
                        <div class="tab-content">
                            <div class="active tab-pane" id="bobot-pelatihan">
                                <div class="box box-info">
                                    <div class="box-header with-border">
                                        <h3 class="box-title">Pelatihan Kembali Pengujian dari data Opname berdasarkan Jenis Produk Produk</h3>
                                    </div>

                                        <div class="box-body">
                                                <input type="hidden" name="idPel" value="<?=$_REQUEST['idPelatihan'];?>"/>
                                                <input type="hidden" class="form-control" name="mode" value="<?=($_REQUEST['mode'] == 'edit')? 'edit' : 'insert';?>"/>
                                                <?php
                                                    foreach ($db->table("SELECT a.idPelatihan, a.x1,a.x2,a.x3,a.y FROM inputpelatihan AS a WHERE a.idPelatihan = '%s'",$_REQUEST['idPelatihan']) as $v){
                                                        $inputTargets[] = array($v->x1, $v->x2, $v->x3);
                                                        $inputTargets[] = array($v->y);
                                                    }

                                                    $bp->setInputTarget($inputTargets);
                                                    $bp->normalize();
                                                    $bp->setHidden(7);
                                                    foreach ($db->table("SELECT * FROM bobotpelatihan WHERE jenis='v' AND idPelatihan='%s'",$_REQUEST['idPelatihan']) as $v){
                                                        $bp->v[$v->neuronFrom][$v->neuronTo] = $v->weight;
                                                    }
                                                    foreach ($db->table("SELECT * FROM bobotpelatihan WHERE jenis='w' AND idPelatihan='%s'",$_REQUEST['idPelatihan']) as $w){
                                                        $bp->w[$w->neuronFrom][$w->neuronTo] = $w->weight;
                                                    }
                                                ?>
                                                <p>Initialization</p>
                                                <table class="table table-bordered table-striped dataTable"  border="1">
                                                    <thead>
                                                        <tr>
                                                            <th>Max Epoch</th>
                                                            <th>Hidden Neuron</th>
                                                            <th>Learning Rate</th>
                                                            <th>Ambang MSE</th>
                                                        </tr>
                                                    </thead>
                                                    <tbody>
                                                        <tr>
                                                            <td>
                                                                100000
                                                            </td>
                                                            <td>
                                                                7
                                                            </td>
                                                            <td>
                                                                0.2
                                                            </td>
                                                            <td>
                                                                0.000000001
                                                            </td>
                                                        </tr>
                                                    </tbody>
                                                </table>
                                                <?php
                                                    $MAXEPOCH = 100000;
                                                    $db->exec("DELETE FROM parameterpelatihan WHERE idPelatihan=%d", $_REQUEST['idPelatihan']);
                                                    $db->exec("DELETE FROM msepelatihan WHERE idPelatihan=%d", $_REQUEST['idPelatihan']);
                                                    $db->begin();
                                                    for ($i=0; $i<$MAXEPOCH; $i++){
                                                        $se = 0;
                                                        for ($j=0; $j<$bp->nTrainings; $j++){
                                                            $bp->loadNthTrainData($j);
                                                            $bp->goForward();
                                                            //$db->exec("INSERT INTO parameterpelatihan(idPelatihan,name,value,epoch,forback) VALUES ('%s','%s','%s','%s','%s')",$_REQUEST['idPelatihan'], 'v',json_encode($bp->v),$i, 1);
                                                            //$db->exec("INSERT INTO parameterpelatihan(idPelatihan,name,value,epoch,forback) VALUES ('%s','%s','%s','%s','%s')",$_REQUEST['idPelatihan'], 'w',json_encode($bp->w),$i, 1);
                                                            $bp->goBackward();
                                                            //$db->exec("INSERT INTO parameterpelatihan(idPelatihan,name,value,epoch,forback) VALUES ('%s','%s','%s','%s','%s')",$_REQUEST['idPelatihan'], 'v',json_encode($bp->v),$i, 0);
                                                            //$db->exec("INSERT INTO parameterpelatihan(idPelatihan,name,value,epoch,forback) VALUES ('%s','%s','%s','%s','%s')",$_REQUEST['idPelatihan'], 'w',json_encode($bp->w),$i, 0);
                                                            $se += $bp->se;
                                                            //$db->exec("INSERT INTO parameterpelatihan(idPelatihan,name,value,epoch,forback) VALUES ('%s','%s','%s','%s','%s')",$_REQUEST['idPelatihan'], 'se',json_encode($bp->se),$i, 0);
                                                        }
                                                        $mse = $se/$bp->nTrainings;
                                                        echo "((Epoch $i --> MSE : $mse)) \r\n";
                                                        $db->exec("INSERT INTO msepelatihan(idPelatihan,epoch,MSE) VALUES ('%s','%s','%s')",$_REQUEST['idPelatihan'], $i,$mse);
                                                        if ($mse <= 1e-8) break;
                                                    }
                                                    $db->commit();
                                                    $idmsePel = $db->row("SELECT a.idMsePelatihan FROM msepelatihan AS a WHERE a.idPelatihan = '%s' ORDER BY a.idMsePelatihan DESC LIMIT 1",$_REQUEST['idPelatihan']);
                                                    $mseTerakhir = $db->row("SELECT a.epoch, a.MSE FROM msepelatihan AS a WHERE idMsePelatihan = '%s'",$idmsePel->idMsePelatihan);
                                                    $db->exec("DELETE FROM bobotpelatihan WHERE idPelatihan = '%s'",$_REQUEST['idPelatihan']);
                                                    foreach ($bp->v as $i=>$v){
                                                        foreach ($v as $j=>$vv)
                                                            //$db->exec("UPDATE bobotpelatihan SET neuronFrom = '%s',neuronTo = '%s', weight = '%s', jenis='%s' WHERE idPelatihan = '%s'",$i,$j,$vv,'v',$_REQUEST['idPelatihan']);
                                                            $db->exec("INSERT INTO `bobotpelatihan`(`idPelatihan`, `neuronFrom`, `neuronTo`, `weight`, `jenis`) VALUES ('%s','%d','%d', '%f', '%s')",
                                                                    $_REQUEST['idPelatihan'], $i, $j, $vv,'v');
                                                    }
                                                    foreach ($bp->w as $i=>$w){
                                                        foreach ($w as $j=>$ww)
                                                            //$db->exec("UPDATE bobotpelatihan SET neuronFrom = '%s',neuronTo = '%s', weight = '%s', jenis='%s' WHERE idPelatihan = '%s'",$i,$j,$ww,'w',$_REQUEST['idPelatihan']);
                                                            $db->exec("INSERT INTO `bobotpelatihan`(`idPelatihan`, `neuronFrom`, `neuronTo`, `weight`, `jenis`) VALUES ('%s','%d','%d', '%f', '%s')",
                                                                    $_REQUEST['idPelatihan'], $i, $j, $ww,'w');
                                                    }
                                                    $message = "Sukses ! Berhenti pada epoch ke ".$mseTerakhir->epoch." dengan MSE ".$mseTerakhir->MSE.". Harap close page ini setelah melakukan perhitungan!";
                                                ?>
                                                <?php showMessageAndErrors($message,$error);?>
                                                <div class="box-footer">
                                                    <a href="pengujian.php"class="btn btn-info pull-left">Back</a>

                                                </div>
                                        </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </section>
    </div>
<?php

//$bp->setInput(array(74, 180000, 202));
//$bp->goForward();
//echo "SET INPUT (74, 180000, 202) TARGET (47) HASIL = ".json_encode($bp->getOutput());
?>
?>