Index: /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/SequenceForTaskDetectionRule.java
===================================================================
--- /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/SequenceForTaskDetectionRule.java	(revision 1128)
+++ /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/SequenceForTaskDetectionRule.java	(revision 1129)
@@ -29,4 +29,5 @@
 import de.ugoe.cs.autoquest.usageprofiles.Trie;
 import de.ugoe.cs.autoquest.usageprofiles.TrieProcessor;
+import de.ugoe.cs.util.StopWatch;
 import de.ugoe.cs.util.console.Console;
 
Index: unk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/StopWatch.java
===================================================================
--- /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/StopWatch.java	(revision 1128)
+++ 	(revision )
@@ -1,191 +1,0 @@
-//   Copyright 2012 Georg-August-Universität Göttingen, Germany
-//
-//   Licensed under the Apache License, Version 2.0 (the "License");
-//   you may not use this file except in compliance with the License.
-//   You may obtain a copy of the License at
-//
-//       http://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the License is distributed on an "AS IS" BASIS,
-//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-//   limitations under the License.
-
-package de.ugoe.cs.autoquest.tasktrees.temporalrelation;
-
-import java.io.PrintStream;
-import java.text.DecimalFormat;
-import java.util.HashMap;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Map;
-
-/**
- * <p>
- * TODO comment
- * </p>
- * 
- * @author Patrick Harms
- */
-public class StopWatch {
-    
-    /**
-     * 
-     */
-    private Map<String, List<Long>> mWatches = new HashMap<String, List<Long>>();
-
-    /**
-     *
-     *
-     * @param id
-     */
-    public void start(String id) {
-        List<Long> timeStamps = mWatches.get(id);
-        
-        if (timeStamps == null) {
-            timeStamps = new LinkedList<Long>();
-            mWatches.put(id, timeStamps);
-        }
-        
-        if (timeStamps.size() % 2 == 0) {
-            timeStamps.add(System.currentTimeMillis());
-        }
-        else {
-            throw new IllegalStateException("watch with id " + id + " already running");
-        }
-    }
-    
-    /**
-     *
-     *
-     * @param id
-     */
-    public void stop(String id) {
-        List<Long> timeStamps = mWatches.get(id);
-       
-        if (timeStamps == null) {
-            throw new IllegalArgumentException("watch with id " + id + " does not exist");
-        }
-       
-        if (timeStamps.size() % 2 == 0) {
-            throw new IllegalStateException("watch with id " + id + " already stopped");
-        }
-        else {
-            timeStamps.add(System.currentTimeMillis());
-        }
-    }
-    
-    /**
-     *
-     *
-     * @param id
-     */
-    public long getDuration(String id) {
-        List<Long> timeStamps = mWatches.get(id);
-       
-        if (timeStamps == null) {
-            throw new IllegalArgumentException("watch with id " + id + " does not exist");
-        }
-       
-        if (timeStamps.size() % 2 != 0) {
-            stop(id);
-        }
-        
-        long result = 0;
-        for (long timeStamp : timeStamps) {
-            if (result >= 0) {
-                result -= timeStamp;
-            }
-            else {
-                result += timeStamp;
-            }
-        }
-        
-        return result;
-    }
-
-    /**
-     *
-     * @param out
-     */
-    public void dumpStatistics(PrintStream out) {
-        if (mWatches.size() <= 0) {
-            throw new IllegalStateException("no watches registered that could be dumped");
-        }
-        
-        Map<String, Long> durations = new HashMap<String, Long>();
-        
-        // get durations
-        for (String id : mWatches.keySet()) {
-            durations.put(id, getDuration(id));
-        }
-        
-        // sort by duration
-        List<String> sortedIds = new LinkedList<String>();
-        int maxIdLength = 0;
-        
-        for (Map.Entry<String, Long> entry : durations.entrySet()) {
-            boolean added = false;
-            for (int i = 0; i < sortedIds.size(); i++) {
-                if (durations.get(sortedIds.get(i)) >= entry.getValue()) {
-                    sortedIds.add(i, entry.getKey());
-                    added = true;
-                    break;
-                }
-            }
-           
-            if (!added) {
-                sortedIds.add(entry.getKey());
-            }
-            
-            maxIdLength = Math.max(maxIdLength, entry.getKey().length());
-        }
-        
-        // get longest duration and check whether it spans all other entries
-        String id = sortedIds.get(sortedIds.size() - 1);
-        List<Long> timeStamps = mWatches.get(id);
-        long firstTimeStamp = timeStamps.get(0);
-        long lastTimeStamp = timeStamps.get(timeStamps.size() - 1);
-        long longestDuration = durations.get(id);
-        boolean longestDurationCoversOthers = true;
-        
-        for (Map.Entry<String, List<Long>> watch : mWatches.entrySet()) {
-            if ((watch.getValue().get(0) < firstTimeStamp) ||
-                (watch.getValue().get(watch.getValue().size() - 1) > lastTimeStamp))
-            {
-                longestDurationCoversOthers = false;
-                break;
-            }
-        }
-        
-        // no finally start the dumping
-        out.println();
-        out.println("Watch Statistics");
-        out.println("================");
-
-        for (String sortedId : sortedIds) {
-            out.print(sortedId);
-            
-            for (int i = sortedId.length(); i <= maxIdLength; i++) {
-                out.print(' ');
-            }
-            
-            out.print(':');
-            out.print(' ');
-            
-            out.print(durations.get(sortedId));
-            out.print(" ms");
-            
-            if (longestDurationCoversOthers) {
-                out.print(" (");
-                out.print(DecimalFormat.getPercentInstance().format
-                              ((double) durations.get(sortedId) / longestDuration));
-                out.print(" of overall duration)");
-            }
-            out.println();
-        }
-        
-        out.println();
-    }
-}
Index: /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/TaskTreeNodeComparator.java
===================================================================
--- /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/TaskTreeNodeComparator.java	(revision 1128)
+++ /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/temporalrelation/TaskTreeNodeComparator.java	(revision 1129)
@@ -21,4 +21,5 @@
 import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode;
 import de.ugoe.cs.autoquest.usageprofiles.SymbolComparator;
+import de.ugoe.cs.util.StopWatch;
 
 /**