/** * * Thu Mar 27 12:46:48 2003/hakank@bonetmail.com * * This is a applet implementing "all" of the J48 features * * */ /* settings in J48: name type default ----------------- binarySplits boolean false minNumObj double 2 numFolds int 3 reducedErrorPruning boolean false (saveInstanceData boolean false) [N/A] subtreeRaising boolean true unpruned boolean false useLaplace boolean false */ // for java & applets import java.io.*; import java.util.*; import java.text.*; import java.applet.Applet; import java.awt.*; import java.awt.event.*; import java.net.*; // for weka import weka.core.*; import weka.classifiers.*; import weka.classifiers.trees.*; import weka.classifiers.trees.J48; import weka.classifiers.bayes.*; public class WekaJ48Applet extends Applet implements ActionListener, ItemListener { private String algorithm = "weka.classifiers.trees.J48"; private String URLString; private java.util.List resultList; Button generateButton; Button resetButton; TextField URLTextField; // algorithm specific variables boolean binarySplits = false; int minNumObj = 2; int numFolds = 3; boolean reducedErrorPruning = false; boolean subtreeRaising = true; boolean unpruned = false; boolean useLaplace = false; // defaults int minNumObjDefault = 2; int numFoldsDefault = 3; // algorithm specific TextField TextField minNumObjTextField; TextField numFoldsTextField; Label generateLabel; Label resetLabel; Label URLLabel; Label messageLabel; // Label algorithmLabel; Label URLChoiceLabel; // algorithm specific Labels Label binarySplitsLabel; Label minNumObjLabel; Label numFoldsLabel; Label reducedErrorPruningLabel; Label subtreeRaisingLabel; Label unprunedLabel; Label useLaplaceLabel; // Choice algorithmChoice; Choice URLChoice; // algorithmic specific Choices (booleans) Choice binarySplitsChoice; Choice reducedErrorPruningChoice; Choice subtreeRaisingChoice; Choice unprunedChoice; Choice useLaplaceChoice; TextArea resultTextArea; Panel inputPanel; Panel inputChoicePanel; Panel settingsPanel; Panel allInputPanel; public static void main(String args[]) { } public void init() { // buttons generateButton = new Button("Generate"); resetButton = new Button("Reset"); // listeners generateButton.addActionListener(this); resetButton.addActionListener(this); URLLabel = new Label("URL: "); messageLabel = new Label(""); // algorithmLabel = new Label("Select algorithm: "); URLChoiceLabel = new Label("Select data set: "); // algoritmic specific Labels binarySplitsLabel = new Label("binarySplits"); minNumObjLabel = new Label("minNumObj"); numFoldsLabel = new Label("numFolds"); reducedErrorPruningLabel = new Label("reducedErrorPruning"); subtreeRaisingLabel = new Label("subtreeRaising"); unprunedLabel = new Label("unpruned"); useLaplaceLabel = new Label("useLaplace"); // algoritmic specific Choice binarySplitsChoice = new Choice(); binarySplitsChoice.add("false"); binarySplitsChoice.add("true"); reducedErrorPruningChoice = new Choice(); reducedErrorPruningChoice.add("false"); reducedErrorPruningChoice.add("true"); subtreeRaisingChoice = new Choice(); subtreeRaisingChoice.add("true"); subtreeRaisingChoice.add("false"); unprunedChoice = new Choice(); unprunedChoice.add("false"); unprunedChoice.add("true"); useLaplaceChoice = new Choice(); useLaplaceChoice.add("false"); useLaplaceChoice.add("true"); URLTextField = new TextField("",30); // algorithmic specific TextField minNumObjTextField = new TextField("" + minNumObjDefault, 4); numFoldsTextField = new TextField("" + numFoldsDefault,4); URLChoice = new Choice(); URLChoice.add("http://www.hakank.org/weka/zoo2.arff"); URLChoice.add("http://www.hakank.org/weka/zoo2_x.arff"); URLChoice.add("http://www.hakank.org/weka/sunburn.arff"); URLChoice.add("http://www.hakank.org/weka/ticdata_categ.arff"); URLChoice.add("http://www.hakank.org/weka/wine.arff"); URLChoice.add("http://www.hakank.org/weka/iris.arff"); URLChoice.add("http://www.hakank.org/weka/iris_discretized.arff"); URLChoice.add("http://www.hakank.org/weka/shape.arff"); URLChoice.add("http://www.hakank.org/weka/titanic.arff"); URLChoice.add("http://www.hakank.org/weka/disease.arff"); URLChoice.add("http://www.hakank.org/weka/zoo.arff"); URLChoice.add("http://www.hakank.org/weka/monk3.arff"); URLChoice.add("http://www.hakank.org/weka/monk2.arff"); URLChoice.add("http://www.hakank.org/weka/monk1.arff"); URLChoice.add("http://www.hakank.org/weka/credit.arff"); URLChoice.add("http://www.hakank.org/weka/contact-lenses.arff"); URLChoice.add("http://www.hakank.org/weka/labor.arff"); URLChoice.add("http://www.hakank.org/weka/labor_discretized.arff"); URLChoice.add("http://www.hakank.org/weka/weather.arff"); URLChoice.add("http://www.hakank.org/weka/weather.nominal.arff"); URLChoice.add("http://www.hakank.org/weka/BC.arff"); URLChoice.add("http://www.hakank.org/weka/G2.arff"); URLChoice.add("http://www.hakank.org/weka/GL.arff"); URLChoice.add("http://www.hakank.org/weka/HD.arff"); URLChoice.add("http://www.hakank.org/weka/HE.arff"); URLChoice.add("http://www.hakank.org/weka/HO.arff"); URLChoice.add("http://www.hakank.org/weka/IR.arff"); URLChoice.add("http://www.hakank.org/weka/LA.arff"); URLChoice.add("http://www.hakank.org/weka/LY.arff"); URLChoice.add("http://www.hakank.org/weka/SO.arff"); URLChoice.add("http://www.hakank.org/weka/V1.arff"); URLChoice.add("http://www.hakank.org/weka/VO.arff"); URLChoice.add("http://www.hakank.org/weka/auto93.arff"); URLChoice.add("http://www.hakank.org/weka/badges_plain.arff"); URLChoice.add("http://www.hakank.org/weka/badges2.arff"); URLChoice.addItemListener(this); // algorithmChoice = new Choice(); // algorithmChoice.addItem("weka.classifiers.trees.j48.J48"); // algorithmChoice.addItemListener(this); settingsPanel = new Panel(new GridLayout(7,2)); settingsPanel.add(binarySplitsLabel); settingsPanel.add(binarySplitsChoice); settingsPanel.add(minNumObjLabel); settingsPanel.add(minNumObjTextField); settingsPanel.add(numFoldsLabel); settingsPanel.add(numFoldsTextField); settingsPanel.add(reducedErrorPruningLabel); settingsPanel.add(reducedErrorPruningChoice); settingsPanel.add(subtreeRaisingLabel); settingsPanel.add(subtreeRaisingChoice); settingsPanel.add(unprunedLabel); settingsPanel.add(unprunedChoice); settingsPanel.add(useLaplaceLabel); settingsPanel.add(useLaplaceChoice); resultTextArea = new TextArea(10,20); inputPanel = new Panel(); inputPanel.setLayout(new FlowLayout()); inputPanel.add(generateButton); inputPanel.add(resetButton); inputPanel.add(URLLabel); inputPanel.add(URLTextField); allInputPanel = new Panel(new BorderLayout()); allInputPanel.add("North", inputPanel); allInputPanel.add("West", URLChoiceLabel); allInputPanel.add("Center", URLChoice); inputChoicePanel = new Panel(); inputChoicePanel.setLayout(new BorderLayout()); inputChoicePanel.add("North", allInputPanel); // inputChoicePanel.add("West", algorithmLabel); // inputChoicePanel.add("Center", algorithmChoice); inputChoicePanel.add("South", settingsPanel); setLayout(new BorderLayout()); add("North", inputChoicePanel); add("Center", resultTextArea); add("South", messageLabel); validate(); } public void actionPerformed(ActionEvent e) { String command = e.getActionCommand(); if ("Generate".equals(command)) { generate(); } else if ("Reset".equals(command)) { reset(); } } // end actionPerformed /** * generate the sequence * */ public void generate() { messageLabel.setText(""); URLString = URLTextField.getText().trim(); resultTextArea.setText(""); if ("".equals(URLString)) { URLString = "http://www.hakank.org/weka/zoo2.arff"; resultTextArea.setText("Using the default ARFF file!"); } try { minNumObj = Integer.parseInt(minNumObjTextField.getText()); } catch (Exception e) { minNumObj = minNumObjDefault; } try { numFolds = Integer.parseInt(numFoldsTextField.getText()); } catch (Exception e) { numFolds = numFoldsDefault; } resultList = new ArrayList(); // do something here! BufferedReader reader = null; int available = 0; messageLabel.setText("Trying to read URL..."); // OK, this is how to read a URL as a BufferedReader WekaJ48 weka; try { reader = readURL(URLString); weka = new WekaJ48(reader); messageLabel.setText("Have read URL. Now generating result. It can take some time...."); weka.setSettings(binarySplits, minNumObj, numFolds, reducedErrorPruning, subtreeRaising, unpruned, useLaplace); resultList = weka.weka(algorithm, URLString); messageLabel.setText("OK!"); } catch(Exception e) { ; // System.out.println("Exception: " + e); } StringBuffer result = new StringBuffer(); for (int i = 0; i < resultList.size(); i++) { result.append(resultList.get(i) + "\n"); } resultTextArea.setText(result.toString()); } // end generate /** * resets the fields * */ public void reset() { resultTextArea.setText(""); messageLabel.setText(""); } // end reset // // itemStateChanged // public void itemStateChanged(ItemEvent e) { /* if (e.getSource() == algorithmChoice) { algorithm = algorithmChoice.getSelectedItem(); } */ if (e.getSource() == URLChoice) { URLString = URLChoice.getSelectedItem(); URLTextField.setText(URLString); } // algorithm specific if (e.getSource() == binarySplitsChoice) { binarySplits = new Boolean(binarySplitsChoice.getSelectedItem()).booleanValue(); } if (e.getSource() == reducedErrorPruningChoice) { reducedErrorPruning = new Boolean(reducedErrorPruningChoice.getSelectedItem()).booleanValue(); } if (e.getSource() == reducedErrorPruningChoice) { reducedErrorPruning = new Boolean(reducedErrorPruningChoice.getSelectedItem()).booleanValue(); } if (e.getSource() == unprunedChoice) { unpruned = new Boolean(unprunedChoice.getSelectedItem()).booleanValue(); } if (e.getSource() == useLaplaceChoice) { useLaplace = new Boolean(useLaplaceChoice.getSelectedItem()).booleanValue(); } } // wrapper for reading an URL public BufferedReader readURL(String urlString) { BufferedReader reader = null; try { URL url = new URL(urlString); reader = new BufferedReader ( new InputStreamReader( (InputStream) url.getContent() ) ); } catch (Exception e) { ; } return reader; } // readURL // from BufferedReader to Vector() public java.util.List readerToVector(BufferedReader reader) { String s; java.util.List v = new ArrayList(); try { while ( (s = reader.readLine()) != null) { v.add(s); } } catch (Exception e) { // hmmm .... } return v; } } // Local variables: // compile-command: "javac WekaJ48Applet.java && java WekaJ48Applet" // End: