LAMPIRAN A : LISTING PROGRAM

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1 1 LAMPIRAN A : LISTING PROGRAM 1. Halaman Umum Index.php <? include("koneksi.php"); <html> <head> <title>frontpage</title> <meta http-equiv="content-type" content="text/html; charset=iso " /> <style> body font: 13px tahoma; margin: 1em 2em; h1 font-size: 24px; </style>  <script> function confirmation() var answer = confirm("apa Anda yakin untuk menyimpan data ini?") if (answer) alert("anda Belum Menyimpan Data. Silahkan cek kembali.") return false; function confirmation_jawab() var answer = confirm("apa Anda yakin dengan jawaban Anda tersebut?") if (answer) alert("anda Belum Menyelesaikan Ujian. Silahkan cek kembali jawaban Anda.") return false; function confirmation_hapus() var answer = confirm("apa Anda yakin untuk menghapus data ini?") if (answer) alert("penghapusan data dibatalkan.") return false; function confirmation_change() var answer = confirm("apa Anda yakin untuk mengubah password ini?"); var passlama = document.getelementbyid('pass_lama').value;

2 2 var passbaru = document.getelementbyid('pass_baru').value; var conf_pass_baru = document.getelementbyid('conf_pass_baru').value; if (answer) if(passbaru!=conf_pass_baru) alert("data Inputan Password Baru tidak sesuai"); return false; alert("perubahan Password dibatalkan.") return false; </script> <? if((isset($_cookie["id"])) (isset($_cookie["nim_mhs"])) (isset($_cookie["id_adm"]))) <link rel="stylesheet" type="text/css" href="css/style_inside.css" /> <? <link rel="stylesheet" type="text/css" href="css/style.css" /> <? <link rel="stylesheet" type="text/css" href="dropmenux/example1.css" /> <script type="text/javascript" src="ie5.js"></script> <script type="text/javascript" src="dropmenux/dropmenux.js"></script>  <script language="javascript"> // Preload images for mouseover var dosen_new= new Image(); dosen_new.src="images/frontpage_03_hover.png"; var mahasiswa_new= new Image(); mahasiswa_new.src="images/frontpage_13_hover.png"; var news_new= new Image(); news_new.src="images/frontpage_16_hover.png"; var hasil_new= new Image(); hasil_new.src="images/frontpage_23_hover.png"; var about_new= new Image(); about_new.src="images/frontpage_27_hover.png"; function change_it(the_name) if (document.images) document.images[the_name].src= eval(the_name+"_new.src"); </script> </head> <body style="background-color:#7ccc14;">  <div id="table_01"> <?php if((isset($_cookie["id"])) (isset($_cookie["nim_mhs"])) (isset($_cookie["id_a dm"]))) include "view/inside.php";

3 3 include "view/home.php"; <? if(isset($koneksi)) mysql_close($koneksi);  </body> </html> Home.php <div id="frontpage-01_"> <div id="frontpage-02_"> <div id="dosen"> <a HREF="?page=dosen" onmouseover="document.dosen.src='images/frontpage_03_hover.png'" onmouseout="document.dosen.src='images/frontpage_03.png'" name="dosen" name="dosen"><img src="images/frontpage_03.png" name="dosen" width="139" height="47" border="0"/></a> <div id="frontpage-04_"> <div id="frontpage-05_"> <div id="frontpage-06_"> <div id="frontpage-07_"> <div id="frontpage-08_"> <div id="frontpage-09_"> <div id="frontpage-10_"> <div id="frontpage-11_"> <div id="frontpage-12_"> <div id="mahasiswa"> <A HREF="?page=mahasiswa" onmouseover="document.mahasiswa.src='images/frontpage_13_hover.gif'" onmouseout="document.mahasiswa.src='images/frontpage_13.gif'" name="mahasiswa"><img id="frontpage_13" src="images/frontpage_13.gif" width="195" height="51" name="mahasiswa" border="0"/></a> <div id="frontpage-14_"> <img id="frontpage_14" src="images/frontpage_14.gif" width="52" height="319" alt="" /> <div id="frontpage-15_"> <img id="frontpage_15" src="images/frontpage_15.gif" width="195" height="19" alt="" /> <div id="news"> <A HREF="#" onmouseover="document.news.src='images/frontpage_16_hover.gif'" onmouseout="document.news.src='images/frontpage_16.gif'" name="news"><img id="frontpage_16" src="images/frontpage_16.gif" width="112" height="51" name="news" border="0"/></a> <div id="frontpage-17_"> <div id="frontpage-18_"> <div id="frontpage-19_">

4 4 <div id="login"> <?php if((isset($_get["login"])) (isset($_get["page"]))) if(isset($_get["page"])) if($_get["page"]=="dosen") include("view/login_dosen.php"); if($_get["page"]=="mahasiswa") include("view/login_mahasiswa.php"); if($_get["page"]=="app_admin") include("view/login_admin.php"); if(isset($_get["login"])) if($_get["login"] == "no") <div id="error">login Gagal, Periksa Kembali. <?php <img id="frontpage_20" src="images/frontpage_20.gif" width="196" height="103" alt="" /> <?php <div id="frontpage-21_"> <div id="frontpage-22_"> <div id="hasil"> <A HREF="#" onmouseover="document.hasil.src='images/frontpage_23_hover.gif'" onmouseout="document.hasil.src='images/frontpage_23.gif'" name="hasil"><img id="frontpage_23" src="images/frontpage_23.gif" width="119" height="49" name="hasil" border="0"/></a> <div id="frontpage-24_"> <div id="frontpage-25_"> <div id="frontpage-26_"> <div id="about"> <A HREF="#" onmouseover="document.about.src='images/frontpage_27_hover.gif'" onmouseout="document.about.src='images/frontpage_27.gif'" name="about"> <img id="frontpage_27" src="images/frontpage_27.gif" width="136" height="55" name="about" border="0"/></a> <div id="frontpage-28_"> <img id="frontpage_28" src="images/frontpage_28.gif" width="55" height="126" alt="" /> <div id="footer"> <div id="nav"><br /><br /> <b>copyright <a by Fakhreza Akbar </b>

5 5 <div id="frontpage-30_"> <div id="frontpage-31_"> <div id="frontpage-32_"> 1.1 Inside.php <? session_start(); <style type="text/css"> body font: 13px tahoma; margin: 1em 2em; h1 font-size: 24px; </style>   <div id="table_01"> <div id="testpage-01_"> <div id="testpage-02_"> <? //if(isset($_cookie["id"])) // <div id="head_right"> <? if(isset($_cookie["nim_mhs"])) $query_mhs = mysql_query("select mhs_nama from tb_mahasiswa where mhs_nim='$_cookie[nim_mhs]'",$koneksi)or die("koneksi Database tidak terjadi"); $row_mhs = mysql_fetch_array($query_mhs); echo $row_mhs[0]; <a href="logout.php">logout</a> <? // <div id="reset"> <div id="head-soal_"> <div id="menu"> <? if(isset($_cookie["id"])) include("view/menu_dosen.php"); if(isset($_cookie["nim_mhs"])) include("view/menu_mahasiswa.php"); if(isset($_cookie["id_adm"])) include("view/menu_admin.php"); <div id="testpage-03_"> <div id="content_"><center> <?php include("koneksi.php"); if(isset($_session["msg"])) echo "<center>".$_session["msg"]."</center>";

6 6 $_SESSION["msg"]=""; if((isset($_get["pagedosen"]))&&(isset($_cookie["id"]))) if($_get["pagedosen"]=="hitungnilai") include("view/pilihan_hitung_nilai.php"); if($_get["pagedosen"]=="mulaihitung") //function explode beberapa kali function multiexplode ($delimiters,$string) $ary = explode($delimiters[0],$string); array_shift($delimiters); if($delimiters!= NULL) foreach($ary as $key => $val) $ary[$key] = multiexplode($delimiters, $val); return $ary; function neat_r($arr, $return = false) $out = array(); $oldtab = " "; $newtab = " "; $lines = explode("\n", print_r($arr, true)); foreach ($lines as $line) //remove numeric indexes like "[0] =>" unless the value is an array if (substr($line, -5)!= "Array") $line = preg_replace("/^(\s*)\[[0-9]+\] => /", "$1", $line, 1); //garbage symbols foreach (array( "Matrix Object" => "", "Array" => "", "[" => "", "]" => "", " => " => ":", ":"=>""," "=>"", "A" =>"", ) as $old => $new) $out = str_replace($old, $new, $out); //garbage lines if (in_array(trim($line), array("array","(",")",""))) continue; //indents $indent = ""; $indents = floor((substr_count($line, $oldtab) - 1) / 2); if ($indents > 0) for ($i = 0; $i < $indents; $i++) $indent.= $newtab; if($indent<>"") $out[] = $indent. trim($line);

7 7 $out = implode(" ", $out); if ($return == true) return $out; //echo $out; // include("jama/matrix.php"); if(isset($_post["tfidf"]) isset($_post["lsa"]) isset($_post["tflsa"])) if(isset($_post["ujian_kode"])) $temp = explode("_",$_post["ujian_kode"]); $get_class = mysql_query("select * from tb_kelas where kelas_kode='$temp[1]'",$koneksi)or die(mysql_error()); $row_class = mysql_fetch_array($get_class); $class = $row_class[1]; $table = "tb_hasil_".date("y")."_".$temp[0]."_".$class; $query_ujian = mysql_query("select * from $table where status='y'",$koneksi)or die(mysql_error()); if(mysql_num_rows($query_ujian)>0) if(isset($_post["tfidf"]) ($_POST["save"]="save_tfidf")) include("view/tfidf.php"); if(isset($_post["lsa"]) ($_POST["save"]=="save_lsa")) include("view/lsa.php"); if(isset($_post["tflsa"]) ($_POST["save"]=="save_tflsa")) include("view/tfidflsa.php"); echo "<center>perhitungan Nilai Matakuliah Ini Belum Dapat Dilakukan</center>"; <form method="post" action="?pagedosen=hitungnilai"> <input type="submit" name="back" value="kembali" /> </form> <? if($_get["pagedosen"]=="buatbaru") include("view/admin_soal_baru.php"); $_SESSION["before"]="buatbaru"; if($_get["pagedosen"]=="update") include("view/admin_soal.php"); $_SESSION["before"]="update"; if($_get["pagedosen"]=="editsoal") if(($_session["before"]=="update")&&(isset($_post["editnext"]))) include("view/edit_soal.php"); $_SESSION["before"]="editsoal";

8 8 include("view/admin_soal.php"); $_SESSION["before"]="update"; if($_get["pagedosen"]=="seeedit") if($_session["before"]=="editsoal") include("view/edit_soal_area.php"); $_SESSION["before"]="seeedit"; include("view/admin_soal.php"); $_SESSION["before"]==""; if($_get["pagedosen"]=="inputsoal") if(($_session["before"]=="buatbaru")&&(isset($_post["add_soal"]))) include("view/admin_tambah_soal.php"); include("view/admin_soal_baru.php"); if($_get["pagedosen"]=="ubahpass") include("view/ubah_pass_dosen.php"); if($_get["pagedosen"]=="info") include("view/info_dosen.php"); if($_get["pagedosen"]=="lihatnilai") include("view/lihat_nilai.php"); if((isset($_get["pageadmin"]))&&(isset($_cookie["id_adm"]))) if($_get["pageadmin"]=="akm_dosen") include("view/add_dosen.php"); if($_get["pageadmin"]=="akm_mahasiswa") include("view/add_mahasiswa.php"); if($_get["pageadmin"]=="add_admin") include("view/add_admin.php"); if($_get["pageadmin"]=="ubah_pass") include("view/ubah_pass_admin.php"); if($_get["pageadmin"]=="soal_kelas")

9 9 <div id="reset"> include("view/add_kelas.php"); if($_get["pageadmin"]=="soal_sifat") include("view/add_sifat.php"); if($_get["pageadmin"]=="soal_ktumum") include("view/add_ktumum.php"); if((isset($_get["pagemhs"]))&&(isset($_cookie["nim_mhs"]))) if($_get["pagemhs"]=="daftarujian") include("view/daftar_ujian.php"); if($_get["pagemhs"]=="mulaiujian") include("view/soal.php"); if($_get["pagemhs"]=="infoujian") include("view/lihat_info.php"); if($_get["pagemhs"]=="ubahpass") include("view/ubah_pass_mhs.php"); if($_get["pagemhs"]=="loginujian") include("view/login_soal.php"); if($_get["pagemhs"]=="jawabujian") include("view/jawab_soal.php"); $_SESSION["before"]=""; </center> <div id="reset"> <div id="reset"> <div id="footer_"><div Fakhreza Akbar Ilmu Komputer USU</b> <div id="testpage-06_">   <script type="text/javascript">

10 10 var dmx = new DropMenuX('menu1'); dmx.delay.show = 0; dmx.delay.hide = 400; dmx.position.levelx.left = 2; dmx.init(); </script> 2. Halaman Algoritma TF/IDF <? $temp = explode("_",$_post["ujian_kode"]); $get_class = mysql_query("select * from tb_kelas where kelas_kode='$temp[1]'",$koneksi)or die(mysql_error()); $baris_class = mysql_fetch_array($get_class); $class = $baris_class[1]; $dir = $temp[0]."_".$class; $nama_table = "tb_hasil_".date("y")."_".$dir; $l=0; $file_query="key/query_".$dir.".txt"; //buat file query $fqh = fopen($file_query,'r')or die("can't open file"); $all_queries = fread($fqh,filesize($file_query)); //ambil query key $queries=explode("~",$all_queries);//arraykan query tiap soal $delimiters = Array("~"," "); $query = multiexplode($delimiters,$all_queries); $i=0; $nim="kunci"; $file_key_jawaban="key/".$dir.".txt"; //buat file key admin $fkjh = fopen($file_key_jawaban, 'r') or die("can't open file"); $all_keys_jawaban = fread($fkjh,filesize($file_key_jawaban)); $key_jawaban=multiexplode($delimiters,$all_keys_jawaban $esai[$i][$j][$k]=0; for($x=0;$x<count($key_jawaban[$j]);$x++) if($query[$j][$k]==$key_jawaban[$j][$x]) $esai[$i][$j][$k]++; $query_jlh_soal=mysql_query("select * from ".$nama_table." where status='y'",$koneksi) or die(mysql_error()); $jlh_essay=mysql_num_rows($query_jlh_soal); $i=1; while($baris_nim=mysql_fetch_array($query_jlh_soal)) $nim=$baris_nim["nim"]; $nim_idf[$i]=$baris_nim["nim"]; $file_key="jawaban/".$dir."/key_".$nim.".txt ; $fkh = fopen($file_key, 'r') or die("can't open file"); $all_keys = fread($fkh,filesize($file_key)); $key=multiexplode($delimiters,$all_keys); $esai[$i][$j][$k]=0; for($x=0;$x<count($key[$j]);$x++) if($query[$j][$k]==$key[$j][$x])

11 11 $i=0; $esai[$i][$j][$k]++; fclose($fkh); //tutup koneksi file key $i++; $df[$j][$k]=0; for($l=0;$l<$i;$l++) if($esai[$l][$j][$k]<>0) $df[$j][$k]++; $idf[$j][$k]=0; if($df[$j][$k]==0) $idf[$j][$k]=0; $idf[$j][$k]=log10(($i)/$df[$j][$k])+1; $tfidf=array(); $nim="kunci"; $tfidf[$i][$j][$k]=0; $tfidf[$i][$j][$k]=$esai[$i][$j][$k]*$idf[$j][$k]; $query_jlh_soal=mysql_query("select * from ".$nama_table." where status='y'",$koneksi) or die(mysql_error()); $jlh_essay=mysql_num_rows($query_jlh_soal); $i=1; while($baris_nim=mysql_fetch_array($query_jlh_soal)) $nim=$baris_nim["nim"]; $nim_idf[$i]=$baris_nim["nim"]; $file_key="jawaban/".$dir."/key_".$nim.".txt"; $fkh = fopen($file_key, 'r') or die("can't open file"); $all_keys = fread($fkh,filesize($file_key)); $key=multiexplode($delimiters,$all_keys $tfidf[$i][$j][$k]=$esai[$i][$j][$k]*$idf[$j][$k]; fclose($fkh); //tutup koneksi file key $i++;

12 12 $i=0; $sum_vektor[$i][$j]=0; $sum_skalar[$i][$j]=0; $skalar[$i][$j][$k]=$tfidf[0][$j][$k]*$tfidf[$i][$j][$k]; $sum_skalar[$i][$j]=$sum_skalar[$i][$j]+$skalar[$i][$j][$k]; $vektor[$i][$j][$k]=pow($tfidf[$i][$j][$k],2); $sum_vektor[$i][$j]=$sum_vektor[$i][$j]+$vektor[$i][$j][$k]; $sum_vektor[$i][$j]=sqrt($sum_vektor[$i][$j]); $query_jlh_soal=mysql_query("select * from ".$nama_table." where status='y'",$koneksi) or die(mysql_error()); $jlh_essay=mysql_num_rows($query_jlh_soal); $i=1; while($baris_nim=mysql_fetch_array($query_jlh_soal)) $nim=$baris_nim["nim"]; $nim_idf[$i]=$baris_nim["nim"]; $file_key="jawaban/".$dir."/key_".$nim.".txt"; $fkh = fopen($file_key, 'r') or die("can't open file"); //buka koneksi ke file key $all_keys = fread($fkh,filesize($file_key)); $key=multiexplode($delimiters,$all_keys); $sum_skalar[$i][$j]=0; $sum_vektor[$i][$j]=0; $skalar[$i][$j][$k]=$tfidf[0][$j][$k]*$tfidf[$i][$j][$k]; $sum_skalar[$i][$j]=$sum_skalar[$i][$j]+$skalar[$i][$j][$k]; $vektor[$i][$j][$k]=pow($tfidf[$i][$j][$k],2); $sum_vektor[$i][$j]=$sum_vektor[$i][$j]+$vektor[$i][$j][$k]; $sum_vektor[$i][$j]=sqrt($sum_vektor[$i][$j]); fclose($fkh); //tutup koneksi file key $i++; for($j=0;$j<$i;$j++) if($sum_vektor[$j][$k]==0) $cosim[$j][$k]=0; $cosim[$j][$k]=$sum_skalar[$j][$k]/($sum_vektor[0][$k]*$sum_vektor[$j][$k]); fclose($fqh); //tutup koneksi file query $get_bobot = mysql_query("select essay_bobot from tb_ujian where essay_kode='$temp[0]' AND essay_kelas='$temp[1]'",$koneksi)or die(mysql_error()); $row_bobot = mysql_fetch_array($get_bobot); $bobot = $row_bobot[0]; $bobot_each = explode(" ",$bobot); for($j=1;$j<$i;$j++) $result[$j][$k] = $cosim[$j][$k]*$bobot_each[$k];

13 13 echo "Hasil Perhitungan dengan Metode TF/IDF<br>"; echo "<table border=\"1\"><tr><th rowspan=\"2\">no</th><th rowspan=\"2\">nim</th><th colspan=\"".count($query)."\">nilai</th><th rowspan=\"2\">total</th></tr><tr>"; echo "<th>".($k+1)."</th>"; echo "</tr>"; $j=1; $k=0; $get_peserta = mysql_query("select * from $nama_table where status='y'",$koneksi)or die(mysql_error()); while($row_peserta = mysql_fetch_array($get_peserta)) $total[$j]=0; $total_nilai[$j]=""; echo "<tr><td>".$row_peserta[0]."</td><td>".$row_peserta[1]."</td>"; if($k==0) $total[$j] = round($result[$j][$k],0)." "; $total[$j]=$total[$j].round($result[$j][$k],0)." "; $total_nilai[$j] = $total_nilai[$j]+round($result[$j][$k],0); echo "<td>".round($result[$j][$k])."</td>"; $total[$j]=substr($total[$j],0,count($total[$j])-2); //echo $total[$j]; echo "<td>".($total_nilai[$j])."</td></tr>"; if($_post["save"]=="save_tfidf") $query_insert = mysql_query("update $nama_table set nilai='$total[$j]' where nim='$row_peserta[1]'",$koneksi)or die(mysql_error()); $query_fixcek = mysql_query("update tb_ujian set essay_cek='y' where essay_kode='$temp[0]' AND essay_kelas='$temp[1]'",$koneksi)or die(mysql_error()); $j++; echo "</table>"; 3. Halaman Algoritma LSA <? $temp = explode("_",$_post["ujian_kode"]); error_reporting(0); $get_class = mysql_query("select * from tb_kelas where kelas_kode='$temp[1]'",$koneksi)or die(mysql_error()); $baris_class = mysql_fetch_array($get_class); $class = $baris_class[1]; $dir = $temp[0]."_".$class; $nama_table = "tb_hasil_".date("y")."_".$dir; $l=0; $file_query="key/query_".$dir.".txt"; //buat file query

14 14 $fqh = fopen($file_query,'r')or die("can't open file"); // buka koneksi ke file query $all_queries = fread($fqh,filesize($file_query)); //ambil query key $queries=explode("~",$all_queries);//arraykan query tiap soal $delimiters = Array("~"," "); $query = multiexplode($delimiters,$all_queries); $i=0; $file_key_jawaban="key/".$dir.".txt"; //buat file key admin $fkjh = fopen($file_key_jawaban, 'r') or die("can't open file"); $all_keys_jawaban = fread($fkjh,filesize($file_key_jawaban)); $key_jawaban=multiexplode($delimiters,$all_keys_jawaban); $esai[$i][$j][$k]=0; for($x=0;$x<count($key_jawaban[$j]);$x++) if($query[$j][$k]==$key_jawaban[$j][$x]) $esai[$i][$j][$k]++; $query_jlh_soal=mysql_query("select * from ".$nama_table." where status='y'",$koneksi) or die(mysql_error()); $jlh_essay=mysql_num_rows($query_jlh_soal); //jumlah jawaban esai dari mahasiswa $i=1; while($baris_nim=mysql_fetch_array($query_jlh_soal)) $nim=$baris_nim["nim"]; $nim_idf[$i]=$baris_nim["nim"]; $file_key="jawaban/".$dir."/key_".$nim.".txt"; $fkh = fopen($file_key, 'r') or die("can't open file"); $all_keys = fread($fkh,filesize($file_key)); $key=multiexplode($delimiters,$all_keys); $esai[$i][$j][$k]=0; for($x=0;$x<count($key[$j]);$x++) if($query[$j][$k]==$key[$j][$x]) $esai[$i][$j][$k]++; fclose($fkh); //tutup koneksi file key $i++; $batas=10; for($j=1;$j<$i;$j++) for($l=0;$l<count($query[$k]);$l++) $input[$l][$j-1]=$esai[$j][$k][$l]; $mat = new Matrix($input);

15 15 $p[$k]=new SingularValueDecomposition($mat); $u[$k] = $p[$k]->getu(); $s[$k] = $p[$k]->gets(); $size_mat_u[$k]= $p[$k]->getu()->n; $singular[$k] = print_r($s[$k],true); $u_svd[$k] = print_r($u[$k],true); $nilai = neat_r($singular[$k],true); $nilai_u = neat_r($u_svd[$k],true); $each_nilai = explode(" ",$nilai); $each_nilai_u = explode(" ",$nilai_u); $size_s = (int)sqrt(count($each_nilai)); $size_u = (count($each_nilai_u)); $baris=0; $lipat=0; $pos=$size_mat_u[$k]-$lipat-1; for($q=1;$q<count($each_nilai_u);$q++) if(($q % ($size_mat_u[$k]+1) <> 0) ($q==1)) if($baris>=($size_mat_u[$k]-2)) $mat_singular[$k][$baris][$kolom]=$each_nilai_u[$q]; if($kolom<=$lipat) $mat_singular[$k][$baris][$kolom]=$each_nilai_u[$q]; $mat_singular[$k][$baris][$kolom]=$each_nilai_u[$q+$pos-1]; $pos-=2; $kolom++; if($baris<=($size_mat_u[$k]-2)) $lipat++; $pos=$size_mat_u[$k]-$lipat-1; $baris++; $baris=0; $lipat=1; for($q=1;$q<count($each_nilai_u);$q++) if(($q % ($size_mat_u[$k]+1) <> 0) ($q==1)) $mat_u[$k][$baris][$kolom]=$each_nilai_u[$q]; if($kolom<2) echo $mat_u[$k][$baris][$kolom]." "; $kolom++;

16 16 echo "<br>"; $lipat++; $baris++; for($doc=0;$doc<$i;$doc++) $lsa1[$doc][$k][0][0]=0; $lsa1[$doc][$k][0][1]=0; for($column=0;$column<$baris+1;$column++) $lsa1[$doc][$k][0][0] = $lsa1[$doc][$k][0][0]+($esai[$doc][$k][$column]*$mat_u[$k][$column][0]); $lsa1[$doc][$k][0][1] = $lsa1[$doc][$k][0][1]+($esai[$doc][$k][$column]*$mat_u[$k][$column][1]); $baris=0; $lipat=1; for($q=1;$q<count($each_nilai);$q++) if(($q % ($size_s+1) <> 0) ($q==1)) $mat_singular[$k][$baris][$kolom]=$each_nilai[$q]; echo $mat_singular[$k][$baris][$kolom]." "; $kolom++; $lipat++; $baris++; for($doc=0;$doc<$i;$doc++) $lsa2[$doc][$k][0][0]=0; $lsa2[$doc][$k][0][1]=0; for($column=0;$column<2;$column++) $lsa2[$doc][$k][0][0] = $lsa2[$doc][$k][0][0]+($lsa1[$doc][$k][0][$column]*$mat_singular[$k][$column][0]); $lsa2[$doc][$k][0][1] = $lsa2[$doc][$k][0][1]+($lsa1[$doc][$k][0][$column]*$mat_singular[$k][$column][1]); unset($input); echo "<br>"; for($j=0;$j<$i;$j++) $lsa_first[$j]=0; for($l=0;$l<count($query[$k]);$l++) for($m=0;$m<2;$m++) $lsa_first[$j]=$lsa_first[$j]+$esai[$j][$k][$l]*$mat_u[$k];

17 17 for($j=0;$j<$i;$j++) $sum_skalar[$j][$k]=0; $sum_vektor[$j][$k]=0; for($column=0;$column<2;$column++) $skalar[$j][$k][$column]=$lsa2[0][$k][0][$column]*$lsa2[$j][$k][0][$column]; $sum_skalar[$j][$k]=$sum_skalar[$j][$k]+$skalar[$j][$k][$column]; $vektor[$j][$k][$column]=pow($lsa2[$j][$k][0][$column],2); $sum_vektor[$j][$k]=$sum_vektor[$j][$k]+$vektor[$j][$k][$column]; $sum_vektor[$j][$k]=sqrt($sum_vektor[$j][$k]); for($j=0;$j<$i;$j++) if($sum_vektor[$j][$k]==0) $cosim[$j][$k]=0; $cosim[$j][$k]=$sum_skalar[$j][$k]/($sum_vektor[0][$k]*$sum_vektor[$j][$k]); fclose($fqh); //tutup koneksi file query $get_bobot = mysql_query("select essay_bobot from tb_ujian where essay_kode='$temp[0]' AND essay_kelas='$temp[1]'",$koneksi)or die(mysql_error()); $row_bobot = mysql_fetch_array($get_bobot); $bobot = $row_bobot[0]; $bobot_each = explode(" ",$bobot); for($j=1;$j<$i;$j++) $result[$j][$k] = $cosim[$j][$k]*$bobot_each[$k]; echo "Hasil Perhitungan dengan Metode LSA<br>"; echo "<table border=\"1\"><tr><th rowspan=\"2\">no</th><th rowspan=\"2\">nim</th><th colspan=\"".count($query)."\">nilai</th><th rowspan=\"2\">total</th></tr><tr>"; echo "<th>".($k+1)."</th>"; echo "</tr>"; $j=1; $k=0; $get_peserta = mysql_query("select * from $nama_table where status='y'",$koneksi)or die(mysql_error()); while($row_peserta = mysql_fetch_array($get_peserta)) $total[$j]=0; $total_nilai[$j]=""; echo "<tr><td>".$row_peserta[0]."</td><td>".$row_peserta[1]."</td>";

18 18 if($k==0) $total[$j] = round($result[$j][$k],0)." "; $total[$j]=$total[$j].round($result[$j][$k],0)." "; $total_nilai[$j] = $total_nilai[$j]+round($result[$j][$k],0); echo "<td>".round($result[$j][$k])."</td>"; $total[$j]=substr($total[$j],0,count($total[$j])-2); echo "<td>".($total_nilai[$j])."</td></tr>"; if($_post["save"]=="save_lsa") $query_insert = mysql_query("update $nama_table set nilai='$total[$j]' where nim='$row_peserta[1]'",$koneksi)or die(mysql_error()); $query_fixcek = mysql_query("update tb_ujian set essay_cek='y' where essay_kode='$temp[0]' AND essay_kelas='$temp[1]'",$koneksi)or die(mysql_error()); $j++; echo "</table>"; 4. Halaman Algoritma TF/IDF-LSA <? $temp = explode("_",$_post["ujian_kode"]); error_reporting(0); $get_class = mysql_query("select * from tb_kelas where kelas_kode='$temp[1]'",$koneksi)or die(mysql_error()); $baris_class = mysql_fetch_array($get_class); $class = $baris_class[1]; $dir = $temp[0]."_".$class; $nama_table = "tb_hasil_".date("y")."_".$dir; $l=0; $file_query="key/query_".$dir.".txt"; //buat file query $fqh = fopen($file_query,'r')or die("can't open file"); // buka koneksi $all_queries = fread($fqh,filesize($file_query)); //ambil query key $queries=explode("~",$all_queries);//arraykan query tiap soal $delimiters = Array("~"," "); $query = multiexplode($delimiters,$all_queries); $i=0; $file_key_jawaban="key/".$dir.".txt"; //buat file key admin $fkjh = fopen($file_key_jawaban, 'r') or die("can't open file"); $all_keys_jawaban = fread($fkjh,filesize($file_key_jawaban)); $key_jawaban=multiexplode($delimiters,$all_keys_jawaban);//arraykan key tiap jawaban $esai[$i][$j][$k]=0; for($x=0;$x<count($key_jawaban[$j]);$x++) if($query[$j][$k]==$key_jawaban[$j][$x]) $esai[$i][$j][$k]++;

19 19 $query_jlh_soal=mysql_query("select * from ".$nama_table." where status='y'",$koneksi) or die(mysql_error()); $jlh_essay=mysql_num_rows($query_jlh_soal); //jumlah jawaban esai dari mahasiswa $i=1; while($baris_nim=mysql_fetch_array($query_jlh_soal)) $nim=$baris_nim["nim"]; $nim_idf[$i]=$baris_nim["nim"]; $file_key="jawaban/".$dir."/key_".$nim.".txt"; //buat file key admin $fkh = fopen($file_key, 'r') or die("can't open file"); $all_keys = fread($fkh,filesize($file_key)); $key=multiexplode($delimiters,$all_keys);//arraykan key $esai[$i][$j][$k]=0; for($x=0;$x<count($key[$j]);$x++) if($query[$j][$k]==$key[$j][$x]) $esai[$i][$j][$k]++; fclose($fkh); //tutup koneksi file key $i++; $df[$j][$k]=0; for($l=0;$l<$i;$l++) if($esai[$l][$j][$k]<>0) $df[$j][$k]++; $idf[$j][$k]=0; if($df[$j][$k]<>0) $idf[$j][$k]=log10(($i)/$df[$j][$k]+1); $i=0; $sum_tfidf = 0; $tfidf[$i][$j][$k]=$esai[$i][$j][$k]*$idf[$j][$k]; $sum_tfidf = $sum_tfidf+pow($esai[$i][$j][$k],2)*pow($idf[$j][$k],2); $query_jlh_soal=mysql_query("select * from ".$nama_table." where status='y'",$koneksi) or die(mysql_error());

20 20 $jlh_essay=mysql_num_rows($query_jlh_soal); $i=1; while($baris_nim=mysql_fetch_array($query_jlh_soal)) $nim=$baris_nim["nim"]; $nim_idf[$i]=$baris_nim["nim"]; $file_key="jawaban/".$dir."/key_".$nim.".txt"; //buat file key admin $fkh = fopen($file_key, 'r') or die("can't open file"); $all_keys = fread($fkh,filesize($file_key)); $key=multiexplode($delimiters,$all_keys); $tfidf[$i][$j][$k]=$esai[$i][$j][$k]*$idf[$j][$k]; $sum_tfidf = $sum_tfidf+pow($tfidf[$i][$j][$k]); fclose($fkh); //tutup koneksi file key $i++; $sum_tfidf = sqrt($sum_tfidf); for($x=0;$x<$i;$x++) $tfidf[$x][$j][$k] = $tfidf[$x][$j][$k]/$sum_tfidf; $batas=2; for($j=1;$j<$i;$j++) for($l=0;$l<count($query[$k]);$l++) $input[$l][$j-1]=$tfidf[$j][$k][$l]; $mat = new Matrix($input); $p[$k]=new SingularValueDecomposition($mat); $u[$k] = $p[$k]->getu(); $s[$k] = $p[$k]->gets(); $size_mat_u[$k]= $p[$k]->getu()->n; $singular[$k] = print_r($s[$k],true); $u_svd[$k] = print_r($u[$k],true); $nilai = neat_r($singular[$k],true); $nilai_u = neat_r($u_svd[$k],true); $each_nilai = explode(" ",$nilai); $each_nilai_u = explode(" ",$nilai_u); $size_s = (int)sqrt(count($each_nilai)); $size_u = (count($each_nilai_u)); $baris=0; $lipat=0; $pos=$size_mat_u[$k]-$lipat-1; for($q=1;$q<count($each_nilai_u);$q++) if(($q % ($size_mat_u[$k]+1) <> 0) ($q==1))

21 21 if($baris>=($size_mat_u[$k]-2)) $mat_singular[$k][$baris][$kolom]=$each_nilai_u[$q]; if($kolom<=$lipat) $mat_singular[$k][$baris][$kolom]=$each_nilai_u[$q]; $mat_singular[$k][$baris][$kolom]=$each_nilai_u[$q+$pos-1]; $pos-=2; $kolom++; if($baris<=($size_mat_u[$k]-2)) $lipat++; $pos=$size_mat_u[$k]-$lipat-1; $baris++; $baris=0; $lipat=1; for($q=1;$q<count($each_nilai_u);$q++) if(($q % ($size_mat_u[$k]+1) <> 0) ($q==1)) $mat_u[$k][$baris][$kolom]=$each_nilai_u[$q]; if($kolom<2) $kolom++; $lipat++; $baris++; for($doc=0;$doc<$i;$doc++) $lsa1[$doc][$k][0][0]=0; $lsa1[$doc][$k][0][1]=0; for($column=0;$column<$baris+1;$column++) $lsa1[$doc][$k][0][0] = $lsa1[$doc][$k][0][0]+($tfidf[$doc][$k][$column]*$mat_u[$k][$column][0]); $lsa1[$doc][$k][0][1] = $lsa1[$doc][$k][0][1]+($tfidf[$doc][$k][$column]*$mat_u[$k][$column][1]); $baris=0; $lipat=1; for($q=1;$q<count($each_nilai);$q++)

22 22 if(($q % ($size_s+1) <> 0) ($q==1)) $mat_singular[$k][$baris][$kolom]=$each_nilai[$q]; $kolom++; $lipat++; $baris++; for($doc=0;$doc<$i;$doc++) $lsa2[$doc][$k][0][0]=0; $lsa2[$doc][$k][0][1]=0; for($column=0;$column<2;$column++) $lsa2[$doc][$k][0][0] = $lsa2[$doc][$k][0][0]+($lsa1[$doc][$k][0][$column]*$mat_singular[$k][$column][0]); $lsa2[$doc][$k][0][1] = $lsa2[$doc][$k][0][1]+($lsa1[$doc][$k][0][$column]*$mat_singular[$k][$column][1]); unset($input); for($j=0;$j<$i;$j++) $sum_skalar[$j][$k]=0; $sum_vektor[$j][$k]=0; for($column=0;$column<2;$column++) $skalar[$j][$k][$column]=$lsa2[0][$k][0][$column]*$lsa2[$j][$k][0][$column]; $sum_skalar[$j][$k]=$sum_skalar[$j][$k]+$skalar[$j][$k][$column]; $vektor[$j][$k][$column]=pow($lsa2[$j][$k][0][$column],2); $sum_vektor[$j][$k]=$sum_vektor[$j][$k]+$vektor[$j][$k][$column]; $sum_vektor[$j][$k]=sqrt($sum_vektor[$j][$k]); for($j=0;$j<$i;$j++) if($sum_vektor[$j][$k]==0) $cosim[$j][$k]=0; $cosim[$j][$k]=$sum_skalar[$j][$k]/($sum_vektor[0][$k]*$sum_vektor[$j][$k]); fclose($fqh); //tutup koneksi file query $get_bobot = mysql_query("select essay_bobot from tb_ujian where essay_kode='$temp[0]' AND essay_kelas='$temp[1]'",$koneksi)or die(mysql_error()); $row_bobot = mysql_fetch_array($get_bobot); $bobot = $row_bobot[0]; $bobot_each = explode(" ",$bobot); for($j=1;$j<$i;$j++)

23 23 $result[$j][$k] = $cosim[$j][$k]*$bobot_each[$k]; echo "Hasil Perhitungan dengan Metode TF/IDF & LSA<br>"; echo "<table border=\"1\"><tr><th rowspan=\"2\">no</th><th rowspan=\"2\">nim</th><th colspan=\"".count($query)."\">nilai</th><th rowspan=\"2\">total</th></tr><tr>"; echo "<th>".($k+1)."</th>"; echo "</tr>"; $j=1; $k=0; $get_peserta = mysql_query("select * from $nama_table where status='y'",$koneksi)or die(mysql_error()); while($row_peserta = mysql_fetch_array($get_peserta)) $total[$j]=0; $total_nilai[$j]=""; echo "<tr><td>".$row_peserta[0]."</td><td>".$row_peserta[1]."</td>"; if($k==0) $total[$j] = round($result[$j][$k],0)." "; $total[$j]=$total[$j].round($result[$j][$k],0)." "; $total_nilai[$j] = $total_nilai[$j]+round($result[$j][$k],0); echo "<td>".round($result[$j][$k])."</td>"; $total[$j]=substr($total[$j],0,count($total[$j])-2); //echo $total[$j]; echo "<td>".($total_nilai[$j])."</td></tr>"; if($_post["save"]=="save_tflsa") $query_insert = mysql_query("update $nama_table set nilai='$total[$j]' where nim='$row_peserta[1]'",$koneksi)or die(mysql_error()); $query_fixcek = mysql_query("update tb_ujian set essay_cek='y' where essay_kode='$temp[0]' AND essay_kelas='$temp[1]'",$koneksi)or die(mysql_error()); $j++; echo "</table>";