dl-learner-svn Mailing List for DL-Learner (Page 128)

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Revision: 1100
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=1100&view=rev
Author:   sknappe
Date:     2008-08-19 14:28:27 +0000 (Tue, 19 Aug 2008)

Log Message:
-----------
category search is now working (you can search instances of a yago class from the navigate tree or from the classes that are displayed in an articel) using the database (its fast), fixed some minor things (unicode decoding, etc.)

Modified Paths:
--------------
    trunk/src/dbpedia-navigator/ajax_get_article.php
    trunk/src/dbpedia-navigator/ajax_search.php
    trunk/src/dbpedia-navigator/helper_functions.php
    trunk/src/dbpedia-navigator/index.php
    trunk/src/dbpedia-navigator/js/ajax.js
    trunk/src/dbpedia-navigator/processTreeMenu.php

Added Paths:
-----------
    trunk/src/dbpedia-navigator/ajax_get_subjects_from_category.php

Removed Paths:
-------------
    trunk/src/dbpedia-navigator/CalculatePageRank.java

Deleted: trunk/src/dbpedia-navigator/CalculatePageRank.java
===================================================================

--- trunk/src/dbpedia-navigator/CalculatePageRank.java	2008-08-19 14:20:39 UTC (rev 1099)
+++ trunk/src/dbpedia-navigator/CalculatePageRank.java	2008-08-19 14:28:27 UTC (rev 1100)
@@ -1,185 +0,0 @@
-import java.io.BufferedReader;
-import java.io.FileNotFoundException;
-import java.io.FileReader;
-import java.io.IOException;
-import java.sql.Connection;
-import java.sql.DriverManager;
-import java.sql.ResultSet;
-import java.sql.Statement;
-
-public class CalculatePageRank {
-	
-	private final String wikilinks="../pagelinks_en.nt";
-	private final String labels="../articles_label_en.nt";
-	private final String categories="../yago_en.nt";
-	
-	private void calculateLinks()
-	{
-		try{
-			Statement stmt;
-			ResultSet rs;
-			int number;
-
-			Class.forName("com.mysql.jdbc.Driver");
-		
-			String url =
-			            "jdbc:mysql://localhost:3306/navigator_db";
-		
-			Connection con = DriverManager.getConnection(
-			                                 url,"navigator", "dbpedia");
-			
-			stmt = con.createStatement();
-			BufferedReader in = new BufferedReader(new FileReader(wikilinks));
-			
-			String line;
-			String[] split;
-			String name;
-			int i=0;
-			while ((line=in.readLine())!=null)
-			{
-				split=line.split(" ");
-				name=split[2].substring(1, split[2].length()-1);
-				rs=stmt.executeQuery("SELECT number FROM rank WHERE name='"+name+"'");
-				if (rs.next()){
-					number=rs.getInt(1);
-					number++;
-					stmt.executeUpdate("UPDATE rank SET number="+number+" WHERE name='"+name+"'");
-				}
-				else{
-					stmt.executeUpdate("INSERT INTO rank (name,number) VALUES ('"+name+"',1)");
-				}
-				if (i%100000==0) System.out.println(i);
-				i++;
-			}
-			
-			in.close();
-			con.close();
-		} catch (FileNotFoundException e)
-		{
-			System.out.println("File not found");
-		} catch (IOException e)
-		{
-			System.out.println("IOException");
-		} catch (Exception e)
-		{
-			e.printStackTrace();
-		}
-	}
-	
-	private void addLabels()
-	{
-		try{
-			Statement stmt;
-			ResultSet rs;
-			
-			Class.forName("com.mysql.jdbc.Driver");
-		
-			String url =
-			            "jdbc:mysql://localhost:3306/navigator_db";
-		
-			Connection con = DriverManager.getConnection(
-			                                 url,"navigator", "dbpedia");
-			
-			stmt = con.createStatement();
-			BufferedReader in = new BufferedReader(new FileReader(labels));
-			
-			String line;
-			String[] split;
-			String name;
-			String label;
-			int i=0;
-			while ((line=in.readLine())!=null)
-			{
-				split=line.split(">");
-				name=split[0].substring(1);
-				label=split[2].substring(split[2].indexOf("\"")+1, split[2].lastIndexOf("\""));
-				rs=stmt.executeQuery("SELECT number FROM rank WHERE name='"+name+"'");
-				if (rs.next()){
-					stmt.executeUpdate("UPDATE rank SET label=\""+label+"\" WHERE name='"+name+"'");
-				}
-				else{
-					stmt.executeUpdate("INSERT INTO rank (name,label) VALUES ('"+name+"',\""+label+"\")");
-				}
-				if (i%100000==0) System.out.println(i);
-				i++;
-			}
-			
-			in.close();
-			con.close();
-		} catch (FileNotFoundException e)
-		{
-			System.out.println("File not found");
-		} catch (IOException e)
-		{
-			System.out.println("IOException");
-		} catch (Exception e)
-		{
-			e.printStackTrace();
-		}
-	}
-	
-	private void calculateCategories()
-	{
-		try{
-			Statement stmt;
-						
-			Class.forName("com.mysql.jdbc.Driver");
-		
-			String url =
-			            "jdbc:mysql://localhost:3306/navigator_db";
-		
-			Connection con = DriverManager.getConnection(
-			                                 url,"navigator", "dbpedia");
-			
-			stmt = con.createStatement();
-			BufferedReader in = new BufferedReader(new FileReader(categories));
-			
-			String line;
-			String[] split;
-			String name;
-			String label;
-			String pred;
-			int i=0;
-			while ((line=in.readLine())!=null)
-			{
-				split=line.split(">");
-				name=split[0].substring(1);
-				pred=split[1].substring(2);
-				if (pred.equals("http://www.w3.org/2000/01/rdf-schema#label"))
-					label=split[2].substring(split[2].indexOf("\"")+1, split[2].lastIndexOf("\""));
-				else
-					label=split[2].substring(2);
-				if (pred.equals("http://www.w3.org/2000/01/rdf-schema#label")){
-					try{
-						stmt.executeUpdate("INSERT INTO categories (category,label) VALUES (\""+name+"\",\""+label+"\")");
-					}catch(Exception e)
-					{}
-				}
-				else{
-					stmt.executeUpdate("UPDATE rank SET category=\""+label+"\" WHERE name=\""+name+"\"");
-				}
-				if (i%100000==0) System.out.println(i);
-				i++;
-			}
-			
-			in.close();
-			con.close();
-		} catch (FileNotFoundException e)
-		{
-			System.out.println("File not found");
-		} catch (IOException e)
-		{
-			System.out.println("IOException");
-		} catch (Exception e)
-		{
-			e.printStackTrace();
-		}
-	}
-	
-	public static void main(String[] args){
-		CalculatePageRank cal=new CalculatePageRank();
-		//cal.calculateLinks();
-		//cal.addLabels();
-		cal.calculateCategories();
-	}
-}
\ No newline at end of file

Modified: trunk/src/dbpedia-navigator/ajax_get_article.php
===================================================================
--- trunk/src/dbpedia-navigator/ajax_get_article.php	2008-08-19 14:20:39 UTC (rev 1099)
+++ trunk/src/dbpedia-navigator/ajax_get_article.php	2008-08-19 14:28:27 UTC (rev 1100)
@@ -47,9 +47,15 @@
 			// goal: display the data in a nice (DBpedia specific way), maybe similar to
 			// dbpedia.org/search
 			
+			//BUILD ARTICLE TITLE
+			if (strlen($triples['http://www.w3.org/2000/01/rdf-schema#label'][0]['value'])>0)
+				$artTitle=$triples['http://www.w3.org/2000/01/rdf-schema#label'][0]['value'];
+			else
+				$artTitle=urldecode(str_replace("_"," ",substr (strrchr ($url, "/"), 1)));
+			
 			// display a picture if there is one
 			if(isset($triples['http://xmlns.com/foaf/0.1/depiction']))
-				$content.='<img src="'.$triples['http://xmlns.com/foaf/0.1/depiction'][0]['value'].'" alt="Picture of '.$triples['http://www.w3.org/2000/01/rdf-schema#label'][0]['value'].'" style="float:right; max-width:200px;" \>';
+				$content.='<img src="'.$triples['http://xmlns.com/foaf/0.1/depiction'][0]['value'].'" alt="Picture of '.$artTitle.'" style="float:right; max-width:200px;" \>';
 			
 			//display where it was redirected from, if it was redirected
 			$redirect="";
@@ -104,9 +110,38 @@
 				$long="";
 			}
 			
-			//BUILD ARTICLE TITLE
-			$artTitle=$triples['http://www.w3.org/2000/01/rdf-schema#label'][0]['value'];
+			//display only one birthdate
+			$birthdates=array("http://dbpedia.org/property/dateOfBirth","http://dbpedia.org/property/birth");
+			$date=false;
+			foreach ($birthdates as $dates){
+				if ($date) unset($triples[$dates]); 
+				if (isset($triples[$dates])&&!$date) $date=true;
+			}
 			
+			//display foreign wiki pages
+			$languages=array('Deutsch'=>'http://dbpedia.org/property/wikipage-de'
+							,'Espa%C3%B1ol'=>'http://dbpedia.org/property/wikipage-es'
+							,'suomi'=>'http://dbpedia.org/property/wikipage-fi'
+							,'Fran%C3%A7ais'=>'http://dbpedia.org/property/wikipage-fr'
+							,'Italiano'=>'http://dbpedia.org/property/wikipage-it'
+							,'%E6%97%A5%E6%9C%AC%E8%AA%9E'=>'http://dbpedia.org/property/wikipage-ja'
+							,'Nederlands'=>'http://dbpedia.org/property/wikipage-nl'
+							,'%E2%80%AANorsk (bokm%C3%A5l)'=>'http://dbpedia.org/property/wikipage-no'
+							,'Polski'=>'http://dbpedia.org/property/wikipage-pl'
+							,'Portugu%C3%AAs'=>'http://dbpedia.org/property/wikipage-pt'
+							,'%D0%A0%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9'=>'http://dbpedia.org/property/wikipage-ru'
+							,'Svenska'=>'http://dbpedia.org/property/wikipage-sv'
+							,'%E4%B8%AD%E6%96%87'=>'http://dbpedia.org/property/wikipage-zh');
+			
+			$pages="";
+			foreach ($languages as $key=>$value){
+				if (isset($triples[$value])){
+					$pages.='<tr><td>'.urldecode($key).': </td><td><a href="'.$triples[$value][0]['value'].'" target="_blank">'.urldecode($triples[$value][0]['value']).'</a></td></tr>';
+					unset($triples[$value]);
+				}				
+			}
+			if (strlen($pages)>0) $content.='<br/><hr><h4>Wikipedia articles in different languages</h4><br/><table border="0">'.$pages.'</table>';
+			
 			// filter out uninteresting properties and properties which
 			// have already been displayed
 			unset($triples['http://xmlns.com/foaf/0.1/page']);
@@ -121,11 +156,21 @@
 			unset($triples['http://www.w3.org/2004/02/skos/core#subject']);
 			unset($triples['http://www.w3.org/2000/01/rdf-schema#label']);
 			unset($triples['http://www.w3.org/2000/01/rdf-schema#comment']);
+			unset($triples['http://dbpedia.org/property/latSec']);
+			unset($triples['http://dbpedia.org/property/lonSec']);
+			unset($triples['http://dbpedia.org/property/lonDeg']);
+			unset($triples['http://dbpedia.org/property/latMin']);
+			unset($triples['http://dbpedia.org/property/lonMin']);
+			unset($triples['http://dbpedia.org/property/latDeg']);
+			unset($triples['http://dbpedia.org/property/lonMin']);
 			
-			$content.='<br/><hr><h4>Remaining Triples</h4><br/>';
 			
-			// display the remaining properties as list which can be used for further navigation
-			$content .= get_triple_table($triples);
+			if (count($triples)>0){
+				$content.='<br/><hr><h4>Remaining Triples</h4><br/>';
+				
+				// display the remaining properties as list which can be used for further navigation
+				$content .= get_triple_table($triples);
+			}
 			
 			//Restart the Session
 			session_start();

Added: trunk/src/dbpedia-navigator/ajax_get_subjects_from_category.php
===================================================================
--- trunk/src/dbpedia-navigator/ajax_get_subjects_from_category.php	                        (rev 0)
+++ trunk/src/dbpedia-navigator/ajax_get_subjects_from_category.php	2008-08-19 14:28:27 UTC (rev 1100)
@@ -0,0 +1,35 @@
+<?php
+	include('helper_functions.php');
+	
+	$category=$_POST['category'];
+	$label=$_POST['label'];
+	$number=$_POST['number'];
+		
+	//initialise content
+	$content="";
+	$bestsearches="";
+	
+	mysql_connect('localhost','navigator','dbpedia');
+	mysql_select_db("navigator_db");
+	$query="SELECT name, label FROM rank WHERE category='$category' ORDER BY number DESC LIMIT ".$number;
+	$res=mysql_query($query);
+	$bestsearches="";
+	if (mysql_num_rows($res)>0){
+		$names=array();
+		$labels=array();
+		while ($result=mysql_fetch_array($res)){
+			$labels[]=$result['label'];
+			$names[]=$result['name'];	  
+		}
+		$content.=getCategoryResultsTable($names,$labels,$category,$label,$number);
+		$bestsearches=getBestSearches($names,$labels);
+	}
+	else
+		$content.="Your Search brought no results.";
+	
+	print $content;
+	print '$$';
+	print "Searchresult for Category \"".$label."\"";
+	print '$$';
+	print $bestsearches;
+?>
\ No newline at end of file

Modified: trunk/src/dbpedia-navigator/ajax_search.php
===================================================================
--- trunk/src/dbpedia-navigator/ajax_search.php	2008-08-19 14:20:39 UTC (rev 1099)
+++ trunk/src/dbpedia-navigator/ajax_search.php	2008-08-19 14:28:27 UTC (rev 1100)
@@ -4,13 +4,7 @@
 	$label=$_POST['label'];
 	$list=$_POST['list'];
 	$number=$_POST['number'];
-	session_start();	
-	$id=$_SESSION['id'];
-	$ksID=$_SESSION['ksID'];
-	session_write_close();
-	
-	setRunning($id,"true");
-	
+		
 	//get parts of the list
 	$checkedInstances=preg_split("[,]",$list,-1,PREG_SPLIT_NO_EMPTY);
 	

Modified: trunk/src/dbpedia-navigator/helper_functions.php
===================================================================
--- trunk/src/dbpedia-navigator/helper_functions.php	2008-08-19 14:20:39 UTC (rev 1099)
+++ trunk/src/dbpedia-navigator/helper_functions.php	2008-08-19 14:28:27 UTC (rev 1100)
@@ -68,8 +68,9 @@
 		{
 			$name=$names[$i*25+$j];
 			$label=$labels[$i*25+$j];
+			if (strlen($label)==0) $label=urldecode(str_replace("_"," ",substr (strrchr ($name, "/"), 1)));
 			$class=$classes[$i*25+$j];
-			$ret.='<p style="display:'.$display.'">&nbsp;&nbsp;&nbsp;&nbsp;'.($i*25+$j+1).'.&nbsp;<a href="" class="'.$class.'" onclick="get_article(\'label='.$name.'&cache=-1\');return false;">'.$label.'</a></p>';
+			$ret.='<p style="display:'.$display.'">&nbsp;&nbsp;&nbsp;&nbsp;'.($i*25+$j+1).'.&nbsp;<a href="" class="'.$class.'" onclick="get_article(\'label='.$name.'&cache=-1\');return false;">'.utf8_to_html($label).'</a></p>';
 		}
 		$i++;
 		$display="none";
@@ -88,6 +89,61 @@
 	return $ret;
 }
 
+function utf8_to_html($string)
+{
+	$string=str_replace("u00C4","&Auml;",$string);
+	$string=str_replace("u00D6","&Ouml;",$string);
+	$string=str_replace("u00DC","&Uuml;",$string);
+	$string=str_replace("u00E4","&auml;",$string);
+	$string=str_replace("u00F6","&ouml;",$string);
+	$string=str_replace("u00FC","&uuml;",$string);
+	$string=str_replace("u0161","&scaron;",$string);
+	
+	return $string;
+}
+
+function getCategoryResultsTable($names,$labels,$category,$catlabel,$number)
+{
+	$ret="<p>These are your Searchresults. Show best ";
+	for ($k=10;$k<125;){
+		$ret.="<a href=\"#\" onclick=\"getSubjectsFromCategory('category=".$category."&label=".$catlabel."&number=".$k."');return false;\"";
+		if ($k==$number) $ret.=" style=\"text-decoration:none;\"";
+		else $ret.=" style=\"text-decoration:underline;\"";
+		$ret.=">".($k)."</a>";
+		if ($k!=100) $ret.=" | ";
+		if($k==10) $k=25;
+		else $k=$k+25;
+	}
+	$ret.="</p><br/>";
+	$i=0;
+	$display="block";
+	$ret.="<div id=\"results\">";
+	while($i*25<count($names))
+	{
+		for ($j=0;($j<25)&&(($i*25+$j)<count($names));$j++)
+		{
+			$name=$names[$i*25+$j];
+			$label=$labels[$i*25+$j];
+			if (strlen($label)==0) $label=urldecode(str_replace("_"," ",substr (strrchr ($name, "/"), 1)));
+			$ret.='<p style="display:'.$display.'">&nbsp;&nbsp;&nbsp;&nbsp;'.($i*25+$j+1).'.&nbsp;<a class="all" href="" onclick="get_article(\'label='.$name.'&cache=-1\');return false;">'.utf8_to_html($label).'</a></p>';
+		}
+		$i++;
+		$display="none";
+	}
+	$ret.='<input type="hidden" id="hidden_class" value="all"/><input type="hidden" id="hidden_number" value="0"/></div><br/><p style="width:100%;text-align:center;" id="sitenumbers">';
+	for ($k=0;$k<$i;$k++){
+		$ret.="<span>";
+		if ($k!=0) $ret.=" | ";
+		$ret.="<a href=\"#\" onclick=\"document.getElementById('hidden_number').value='".(25*$k)."';show_results(document.getElementById('hidden_class').value,".(25*$k).");\"";
+		if ($k==0) $ret.=" style=\"text-decoration:none;\"";
+		else $ret.=" style=\"text-decoration:underline;\"";
+		$ret.=">".($k+1)."</a>";
+		$ret.="</span>";
+	}
+	$ret.="</p>";
+	return $ret;
+}
+
 function getBestSearches($names,$labels)
 {
 	$ret="<div id=\"best-results\">";
@@ -95,7 +151,8 @@
 	{
 		$name=$names[$j];
 		$label=$labels[$j];
-		$ret.='&nbsp;'.($j+1).'.&nbsp;<a href="" onclick="get_article(\'label='.$name.'&cache=-1\');return false;">'.$label.'</a><br/>';
+		if (strlen($label)==0) $label=urldecode(str_replace("_"," ",substr (strrchr ($name, "/"), 1)));
+		$ret.='&nbsp;'.($j+1).'.&nbsp;<a href="" onclick="get_article(\'label='.$name.'&cache=-1\');return false;">'.utf8_to_html($label).'</a><br/>';
 	}
 	$ret.="</div>";
 	return $ret;
@@ -117,17 +174,17 @@
 
 function get_triple_table($triples) {
 
-	$table = '<table border="0"><tr><td>predicate</td><td>object</td></tr>';
+	$table = '<table border="0"><tr><td><b>Predicate</b></td><td><b>Object</b></td></tr>';
 	$i=1;
 	foreach($triples as $predicate=>$object) {
 		if ($i>0) $backgroundcolor="eee";
 		else $backgroundcolor="ffffff";
-		$table .= '<tr style="background-color:#'.$backgroundcolor.';"><td><a href="'.$predicate.'">'.nicePredicate($predicate).'</a></td>';
+		$table .= '<tr style="background-color:#'.$backgroundcolor.';"><td><a href="'.$predicate.'" target="_blank">'.nicePredicate($predicate).'</a></td>';
 		$table .= '<td><ul>';
 		foreach($object as $element) {
 			if ($element['type']=="uri"){
-				if (strpos($element['value'],"http://dbpedia.org/resource/")===0&&substr_count($element['value'],"/")==4) $table .= '<li><a href="#" onclick="get_article(\'label='.$element['value'].'&cache=-1\');return false;">'.$element['value'].'</a></li>';
-				else $table .= '<li><a href="'.$element['value'].'" target="_blank">'.$element['value'].'</a></li>';
+				if (strpos($element['value'],"http://dbpedia.org/resource/")===0&&substr_count($element['value'],"/")==4) $table .= '<li><a href="#" onclick="get_article(\'label='.$element['value'].'&cache=-1\');return false;">'.urldecode($element['value']).'</a></li>';
+				else $table .= '<li><a href="'.$element['value'].'" target="_blank">'.urldecode($element['value']).'</a></li>';
 			}
 			else $table .= '<li>'.$element['value'].'</li>';
 		}
@@ -161,32 +218,41 @@
 		case "http://www.w3.org/2003/01/geo/wgs84_pos":	$namespace="geo";
 													 	break;
 		case "http://www.w3.org/2004/02/skos/core":		$namespace="skos";
+													 	break;
+		case "http://www.georss.org/georss/point":		$namespace="georss";
 													 	break;	
 	}
 	
-	return $namespace.':'.$name;
+	//fl\xE4che has strange url
+	$name=str_replace('fl_percent_C3_percent_A4che','fl%C3%A4che',$name);
+	return $namespace.':'.urldecode($name);
 }
 
 function formatClassArray($ar) {
-	if ($ar[0]['value']!="http://xmlns.com/foaf/0.1/Person") $string = formatClass($ar[0]['value']);
-	for($i=1; $i<count($ar); $i++) {
-		if ($ar[0]['value']!="http://xmlns.com/foaf/0.1/Person"||$i>1) $string .= ', ' . formatClass($ar[$i]['value']);
-		else $string .= formatClass($ar[$i]['value']);
+	mysql_connect('localhost','navigator','dbpedia');
+	mysql_select_db("navigator_db");
+	$string="";
+	for($i=0; $i<count($ar); $i++) {
+		$query="SELECT label FROM categories WHERE category='".$ar[$i]['value']."' LIMIT 1";
+		$res=mysql_query($query);
+		$result=mysql_fetch_array($res);
+		if ($ar[$i]['value']!="http://xmlns.com/foaf/0.1/Person"&&strlen($string)>0) $string .= ', ' . formatClass($ar[$i]['value'],$result['label']);
+		else if ($ar[$i]['value']!="http://xmlns.com/foaf/0.1/Person"&&strlen($string)==0) $string .= formatClass($ar[$i]['value'],$result['label']);
 	}
 	return $string;
 }
 
 // format a class nicely, i.e. link to it and possibly display
 // it in a better way
-function formatClass($className) {
+function formatClass($className,$label) {
 	$yagoPrefix = 'http://dbpedia.org/class/yago/';
 	if(substr($className,0,30)==$yagoPrefix) {
-		return '<a href="'.$className.'">'.substr($className,30).'</a>';	
+		return '<a href="#" onclick="getSubjectsFromCategory(\'category='.$className.'&label='.$label.'&number=10\');">'.$label.'</a>';	
 	// DBpedia is Linked Data, so it makes always sense to link it
 	// ToDo: instead of linking to other pages, the resource should better
 	// be openened within DBpedia Navigator
 	} else if(substr($className,0,14)=='http://dbpedia') {
-		return '<a href="'.$className.'">'.$className.'</a>';
+		return '<a href="'.$className.'" target="_blank">'.$className.'</a>';
 	} else {
 		return $className;
 	}

Modified: trunk/src/dbpedia-navigator/index.php
===================================================================
--- trunk/src/dbpedia-navigator/index.php	2008-08-19 14:20:39 UTC (rev 1099)
+++ trunk/src/dbpedia-navigator/index.php	2008-08-19 14:28:27 UTC (rev 1100)
@@ -110,7 +110,8 @@
 					tree.setOnClickHandler(doOnClick);
 					function doOnClick(nodeId){ 
 						var myUrl = tree.getUserData(nodeId,"myurl");
-						getSubjectsFromConcept('concept='+myUrl);
+						var myLabel = tree.getUserData(nodeId,"mylabel");
+						getSubjectsFromCategory('category='+myUrl+'&label='+myLabel+'&number=10');
 					}
 					function myErrorHandler(type, desc, erData){ 
 						alert('An error occured while trying to navigate through Class Tree.\nPlease try again later.'); 
@@ -152,19 +153,19 @@
 	<div id="rightSidebar">
 
 		<div class="box">
-		  <div class="boxtitlewithbutton" id="positivesboxtitle">search relevant &nbsp; <a href="#"><img src="<?php print $path;?>images/remove.png" onclick="clearPositives()" /></a> </div>
+		  <div class="boxtitlewithbutton" id="positivesboxtitle" style="cursor:help;" title="The shown articles are considered when generating navigation tips.">search relevant &nbsp; <a href="#"><img src="<?php print $path;?>images/remove.png" onclick="clearPositives()" title="Delete all articles of interest."/></a> </div>
 		  <div class="boxcontent" id="Positives">
 		  </div> <!-- boxcontent -->
 		</div> <!-- box -->
 
 		<div class="box">
-		  <div class="boxtitlewithbutton" id="negativesboxtitle">not relevant &nbsp; <a href="#"><img src="<?php print $path;?>images/remove.png" onclick="clearNegatives()" /></a> </div>
+		  <div class="boxtitlewithbutton" id="negativesboxtitle" style="cursor:help;" title="The shown articles are avoided when generating navigation tips.">not relevant &nbsp; <a href="#"><img src="<?php print $path;?>images/remove.png" onclick="clearNegatives()" title="Delete all avoided articles."/></a> </div>
 		  <div class="boxcontent" id="Negatives">
 		  </div> <!-- boxcontent -->
 		</div> <!-- box -->
 
 		<div class="box" id="LastArticlesBox" style="display:none">
-		  <div class="boxtitle">Articles Last Viewed</div>
+		  <div class="boxtitle" style="cursor:help;" title="Up to 5 articles, that were last displayed, are shown here.">Articles Last Viewed</div>
 		  <div class="boxcontent" id="lastarticles">
 		  </div> <!-- boxcontent -->
 		</div> <!-- box -->

Modified: trunk/src/dbpedia-navigator/js/ajax.js
===================================================================
--- trunk/src/dbpedia-navigator/js/ajax.js	2008-08-19 14:20:39 UTC (rev 1099)
+++ trunk/src/dbpedia-navigator/js/ajax.js	2008-08-19 14:28:27 UTC (rev 1100)
@@ -295,28 +295,58 @@
     		XhrObj.send();
     	}
     	
-    	function getSubjectsFromConcept(param)
-    	{
-    		if (document.all){
-    			//IE
-    			var XhrObj = new ActiveXObject("Microsoft.XMLHTTP");
-    		}
-    		else{
-    			//Mozilla
-    			var XhrObj = new XMLHttpRequest();
-    		}
+function getSubjectsFromConcept(param)
+{
+	if (document.all){
+		//IE
+  		var XhrObj = new ActiveXObject("Microsoft.XMLHTTP");
+    }
+    else{
+    	//Mozilla
+    	var XhrObj = new XMLHttpRequest();
+    }
     		
-    		XhrObj.open("POST",'ajax_get_subjects_from_concept.php');
+    XhrObj.open("POST",'ajax_get_subjects_from_concept.php');
+    
+    XhrObj.onreadystatechange = function()
+    {
+    	if (XhrObj.readyState == 4 && XhrObj.status == 200){
+    		var response = XhrObj.responseText.split('$$');
+    		document.getElementById('articlecontent').innerHTML=response[0];
+    		document.getElementById('ArticleTitle').innerHTML=response[1];
+    	}
+    }
     		
-    		XhrObj.onreadystatechange = function()
-    		{
-    			if (XhrObj.readyState == 4 && XhrObj.status == 200){
-    				var response = XhrObj.responseText.split('$$');
-    				document.getElementById('articlecontent').innerHTML=response[0];
-    				document.getElementById('ArticleTitle').innerHTML=response[1];
-    			}
+    XhrObj.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
+    XhrObj.send(param);
+}
+
+function getSubjectsFromCategory(param)
+{
+	if (document.all){
+		//IE
+  		var XhrObj = new ActiveXObject("Microsoft.XMLHTTP");
+    }
+    else{
+    	//Mozilla
+    	var XhrObj = new XMLHttpRequest();
+    }
+    		
+    XhrObj.open("POST",'ajax_get_subjects_from_category.php');
+    
+    XhrObj.onreadystatechange = function()
+    {
+    	if (XhrObj.readyState == 4 && XhrObj.status == 200){
+    		var response = XhrObj.responseText.split('$$');
+    		document.getElementById('articlecontent').innerHTML=response[0];
+    		document.getElementById('ArticleTitle').innerHTML=response[1];
+    		if (response[2].length>0){
+    			document.getElementById('searchcontent').innerHTML=response[2];
+    			document.getElementById('SearchResultBox').style.display='block';
     		}
+    	}
+    }
     		
-    		XhrObj.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
-    		XhrObj.send(param);
-    	}
\ No newline at end of file
+    XhrObj.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
+    XhrObj.send(param);
+}
\ No newline at end of file

Modified: trunk/src/dbpedia-navigator/processTreeMenu.php
===================================================================
--- trunk/src/dbpedia-navigator/processTreeMenu.php	2008-08-19 14:20:39 UTC (rev 1099)
+++ trunk/src/dbpedia-navigator/processTreeMenu.php	2008-08-19 14:28:27 UTC (rev 1100)
@@ -17,7 +17,7 @@
 		foreach ($categories as $category){
 			if ($category['subclasses']=="0") $child=0;
 			else $child=1;
-			print("<item child=\"".$child."\" id=\"".$category['value']."\" text=\"".$category['label']."\"><userdata name=\"myurl\">".$category['value']."</userdata></item>");
+			print("<item child=\"".$child."\" id=\"".$category['value']."\" text=\"".$category['label']."\"><userdata name=\"myurl\">".$category['value']."</userdata><userdata name=\"mylabel\">".$category['label']."</userdata></item>");
 		}
 	}
 print("</tree>");


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