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The Waikato Environment for Knowledge Analysis (WEKA), a machine
learning workbench. This version represents the developer version, the
"bleeding edge" of development, you could say. New functionality gets added
to this version.
/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see m_instanceListeners = new ArrayList();
/** Downstream steps listening to data set events */
protected ArrayList m_dataListeners = new ArrayList();
/**
* Whether to make the binary match/non-match attribute a nominal (rather than
* numeric) binary attribute.
*/
protected boolean m_nominalBinary;
/**
* For multi-valued labeled rules, whether or not to consume non-matching
* instances or output them with missing value for the match attribute.
*/
protected boolean m_consumeNonMatchingInstances;
/** Add filter for adding the new attribute */
protected Add m_addFilter;
/** Name of the new attribute */
protected String m_attName = "Match";
/** The output structure */
// protected Instances m_outputStructure;
/** Instance event to use */
protected InstanceEvent m_ie = new InstanceEvent(this);
/**
* Default visual filters
*/
protected BeanVisual m_visual = new BeanVisual("SubstringLabeler",
BeanVisual.ICON_PATH + "DefaultFilter.gif", BeanVisual.ICON_PATH
+ "DefaultFilter_animated.gif");
/**
* Constructor
*/
public SubstringLabeler() {
useDefaultVisual();
setLayout(new BorderLayout());
add(m_visual, BorderLayout.CENTER);
m_env = Environment.getSystemWide();
}
/**
* Help information suitable for displaying in the GUI.
*
* @return a description of this component
*/
public String globalInfo() {
return "Matches substrings in String attributes using "
+ "either literal or regular expression matches. "
+ "The value of a new attribute is set to reflect"
+ " the status of the match. The new attribute can "
+ "be either binary (in which case values indicate "
+ "match or no match) or multi-valued nominal, "
+ "in which case a label must be associated with each "
+ "distinct matching rule. In the case of labeled matches, "
+ "the user can opt to have non matching instances output "
+ "with missing value set for the new attribute or not"
+ " output at all (i.e. consumed by the step).";
}
/**
* Set internally encoded list of match rules
*
* @param details the list of match rules
*/
public void setMatchDetails(String details) {
m_matchDetails = details;
}
/**
* Get the internally encoded list of match rules
*
* @return the match rules
*/
public String getMatchDetails() {
return m_matchDetails;
}
/**
* Set whether the new attribute created should be a nominal binary attribute
* rather than a numeric binary attribute.
*
* @param nom true if the attribute should be a nominal binary one
*/
public void setNominalBinary(boolean nom) {
m_nominalBinary = nom;
}
/**
* Get whether the new attribute created should be a nominal binary attribute
* rather than a numeric binary attribute.
*
* @return true if the attribute should be a nominal binary one
*/
public boolean getNominalBinary() {
return m_nominalBinary;
}
/**
* Set whether instances that do not match any of the rules should be
* "consumed" rather than output with a missing value set for the new
* attribute.
*
* @param consume true if non matching instances should be consumed by the
* component.
*/
public void setConsumeNonMatching(boolean consume) {
m_consumeNonMatchingInstances = consume;
}
/**
* Get whether instances that do not match any of the rules should be
* "consumed" rather than output with a missing value set for the new
* attribute.
*
* @return true if non matching instances should be consumed by the component.
*/
public boolean getConsumeNonMatching() {
return m_consumeNonMatchingInstances;
}
public void setMatchAttributeName(String name) {
m_attName = name;
}
public String getMatchAttributeName() {
return m_attName;
}
/**
* Add a datasource listener
*
* @param dsl the datasource listener to add
*/
@Override
public void addDataSourceListener(DataSourceListener dsl) {
m_dataListeners.add(dsl);
}
/**
* Remove a datasource listener
*
* @param dsl the datasource listener to remove
*/
@Override
public void removeDataSourceListener(DataSourceListener dsl) {
m_dataListeners.remove(dsl);
}
/**
* Add an instance listener
*
* @param dsl the instance listener to add
*/
@Override
public void addInstanceListener(InstanceListener dsl) {
m_instanceListeners.add(dsl);
}
/**
* Remove an instance listener
*
* @param dsl the instance listener to remove
*/
@Override
public void removeInstanceListener(InstanceListener dsl) {
m_instanceListeners.remove(dsl);
}
/**
* Set environment variables to use
*/
@Override
public void setEnvironment(Environment env) {
m_env = env;
}
/**
* Returns true if, at the current time, the named event could be generated.
*
* @param eventName the name of the event in question
* @return true if the named event could be generated
*/
@Override
public boolean eventGeneratable(String eventName) {
if (m_listenee == null) {
return false;
}
if (!eventName.equals("instance") && !eventName.equals("dataSet")) {
return false;
}
if (m_listenee instanceof DataSource) {
if (m_listenee instanceof EventConstraints) {
EventConstraints ec = (EventConstraints) m_listenee;
return ec.eventGeneratable(eventName);
}
}
if (m_listenee instanceof TrainingSetProducer) {
if (m_listenee instanceof EventConstraints) {
EventConstraints ec = (EventConstraints) m_listenee;
if (!eventName.equals("dataSet")) {
return false;
}
if (!ec.eventGeneratable("trainingSet")) {
return false;
}
}
}
if (m_listenee instanceof TestSetProducer) {
if (m_listenee instanceof EventConstraints) {
EventConstraints ec = (EventConstraints) m_listenee;
if (!eventName.equals("dataSet")) {
return false;
}
if (!ec.eventGeneratable("testSet")) {
return false;
}
}
}
return true;
}
/**
* Use the default visual representation
*/
@Override
public void useDefaultVisual() {
m_visual.loadIcons(BeanVisual.ICON_PATH + "DefaultFilter.gif",
BeanVisual.ICON_PATH + "DefaultFilter_animated.gif");
m_visual.setText("SubstringLabeler");
}
/**
* Set a new visual representation
*
* @param newVisual a BeanVisual value
*/
@Override
public void setVisual(BeanVisual newVisual) {
m_visual = newVisual;
}
/**
* Get the visual representation
*
* @return a BeanVisual value
*/
@Override
public BeanVisual getVisual() {
return m_visual;
}
/**
* Set a custom (descriptive) name for this bean
*
* @param name the name to use
*/
@Override
public void setCustomName(String name) {
m_visual.setText(name);
}
/**
* Get the custom (descriptive) name for this bean (if one has been set)
*
* @return the custom name (or the default name)
*/
@Override
public String getCustomName() {
return m_visual.getText();
}
/**
* Stop any processing that the bean might be doing.
*/
@Override
public void stop() {
if (m_listenee != null) {
if (m_listenee instanceof BeanCommon) {
((BeanCommon) m_listenee).stop();
}
}
if (m_log != null) {
m_log.statusMessage(statusMessagePrefix() + "Stopped");
}
m_busy = false;
}
/**
* Returns true if. at this time, the bean is busy with some (i.e. perhaps a
* worker thread is performing some calculation).
*
* @return true if the bean is busy.
*/
@Override
public boolean isBusy() {
return m_busy;
}
/**
* Set a logger
*
* @param logger a weka.gui.Logger value
*/
@Override
public void setLog(Logger logger) {
m_log = logger;
}
/**
* Returns true if, at this time, the object will accept a connection via the
* named event
*
* @param esd the EventSetDescriptor for the event in question
* @return true if the object will accept a connection
*/
@Override
public boolean connectionAllowed(EventSetDescriptor esd) {
return connectionAllowed(esd.getName());
}
/**
* Returns true if, at this time, the object will accept a connection via the
* named event
*
* @param eventName the name of the event
* @return true if the object will accept a connection
*/
@Override
public boolean connectionAllowed(String eventName) {
if (!eventName.equals("instance") && !eventName.equals("dataSet")
&& !eventName.equals("trainingSet") && !eventName.equals("testSet")) {
return false;
}
if (m_listenee != null) {
return false;
}
return true;
}
/**
* Notify this object that it has been registered as a listener with a source
* for receiving events described by the named event This object is
* responsible for recording this fact.
*
* @param eventName the event
* @param source the source with which this object has been registered as a
* listener
*/
@Override
public void connectionNotification(String eventName, Object source) {
if (connectionAllowed(eventName)) {
m_listenee = source;
}
}
/**
* Notify this object that it has been deregistered as a listener with a
* source for named event. This object is responsible for recording this fact.
*
* @param eventName the event
* @param source the source with which this object has been registered as a
* listener
*/
@Override
public void disconnectionNotification(String eventName, Object source) {
if (source == m_listenee) {
m_listenee = null;
}
}
/**
* Make the output instances structure
*
* @param inputStructure the incoming instances structure
* @throws Exception if a problem occurs
*/
protected void makeOutputStructure(Instances inputStructure) throws Exception {
m_matches = new SubstringLabelerRules(m_matchDetails, m_attName,
getConsumeNonMatching(), getNominalBinary(), inputStructure,
statusMessagePrefix(), m_log, m_env);
// m_matches.makeOutputStructure();
}
protected transient StreamThroughput m_throughput;
/**
* Accept and process an instance event
*
* @param e the instance event to process
*/
@Override
public void acceptInstance(InstanceEvent e) {
m_busy = true;
if (e.getStatus() == InstanceEvent.FORMAT_AVAILABLE) {
m_throughput = new StreamThroughput(statusMessagePrefix());
Instances structure = e.getStructure();
try {
makeOutputStructure(structure);
} catch (Exception ex) {
String msg = statusMessagePrefix()
+ "ERROR: unable to create output instances structure.";
if (m_log != null) {
m_log.statusMessage(msg);
m_log.logMessage("[SubstringLabeler] " + ex.getMessage());
}
stop();
ex.printStackTrace();
m_busy = false;
return;
}
if (!e.m_formatNotificationOnly) {
if (m_log != null) {
m_log.statusMessage(statusMessagePrefix() + "Processing stream...");
}
}
m_ie.setStructure(m_matches.getOutputStructure());
m_ie.m_formatNotificationOnly = e.m_formatNotificationOnly;
notifyInstanceListeners(m_ie);
} else {
Instance inst = e.getInstance();
Instance out = null;
if (inst != null) {
m_throughput.updateStart();
try {
out = m_matches.makeOutputInstance(inst, false);
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
m_throughput.updateEnd(m_log);
}
if (inst == null || out != null
|| e.getStatus() == InstanceEvent.BATCH_FINISHED) { // consumed
// notify listeners
m_ie.setInstance(out);
m_ie.setStatus(e.getStatus());
notifyInstanceListeners(m_ie);
}
if (e.getStatus() == InstanceEvent.BATCH_FINISHED || inst == null) {
// we're done
m_throughput.finished(m_log);
}
}
m_busy = false;
}
/**
* Accept and process a data set event
*
* @param e the data set event to process
*/
@Override
public void acceptDataSet(DataSetEvent e) {
m_busy = true;
if (m_log != null) {
m_log.statusMessage(statusMessagePrefix() + "Processing batch...");
}
try {
makeOutputStructure(new Instances(e.getDataSet(), 0));
} catch (Exception ex) {
String msg = statusMessagePrefix()
+ "ERROR: unable to create output instances structure.";
if (m_log != null) {
m_log.statusMessage(msg);
m_log.logMessage("[SubstringLabeler] " + ex.getMessage());
}
stop();
ex.printStackTrace();
m_busy = false;
return;
}
Instances toProcess = e.getDataSet();
for (int i = 0; i < toProcess.numInstances(); i++) {
Instance current = toProcess.instance(i);
Instance result = null;
try {
result = m_matches.makeOutputInstance(current, true);
} catch (Exception ex) {
ex.printStackTrace();
}
if (result != null) {
// m_outputStructure.add(result);
m_matches.getOutputStructure().add(result);
}
}
if (m_log != null) {
m_log.statusMessage(statusMessagePrefix() + "Finished.");
}
// notify listeners
DataSetEvent d = new DataSetEvent(this, m_matches.getOutputStructure());
notifyDataListeners(d);
m_busy = false;
}
/**
* Accept and process a test set event
*
* @param e the test set event to process
*/
@Override
public void acceptTestSet(TestSetEvent e) {
Instances test = e.getTestSet();
DataSetEvent d = new DataSetEvent(this, test);
acceptDataSet(d);
}
/**
* Accept and process a training set event
*
* @parame e the training set event to process
*/
@Override
public void acceptTrainingSet(TrainingSetEvent e) {
Instances train = e.getTrainingSet();
DataSetEvent d = new DataSetEvent(this, train);
acceptDataSet(d);
}
@SuppressWarnings("unchecked")
private void notifyDataListeners(DataSetEvent e) {
List l;
synchronized (this) {
l = (List) m_dataListeners.clone();
}
if (l.size() > 0) {
for (DataSourceListener ds : l) {
ds.acceptDataSet(e);
}
}
}
@SuppressWarnings("unchecked")
private void notifyInstanceListeners(InstanceEvent e) {
List l;
synchronized (this) {
l = (List) m_instanceListeners.clone();
}
if (l.size() > 0) {
for (InstanceListener il : l) {
il.acceptInstance(e);
}
}
}
protected String statusMessagePrefix() {
return getCustomName() + "$" + hashCode() + "|";
}
}
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