Example usage for weka.core Version VERSION

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In this page you can find the example usage for weka.core Version VERSION.

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String VERSION

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Usage

From source file:adams.core.management.WekaHomeEnvironmentModifier.java

License:Open Source License

/**
 * Updates the environment variables that the {@link Launcher} uses for
 * launching the ADAMS process.//from  w  w  w  . ja  v  a  2  s .co m
 *
 * @param env      the current key=value pairs
 * @return      if the environment got updated
 */
@Override
public boolean updateEnvironment(List<String> env) {
    String path;
    File dir;

    for (String var : env) {
        if (var.startsWith(ENV_VAR + "=")) {
            getLogger().warning("Environment variable " + ENV_VAR + " already present, not overriding.");
            return false;
        }
    }

    path = Environment.getInstance().getHome() + File.separator + "wekafiles" + File.separator
            + FileUtils.createFilename(Version.VERSION, "_");

    // try to create directory
    dir = new File(path);
    if (!dir.exists()) {
        if (isLoggingEnabled())
            getLogger().info("Creating directory: " + path);
        if (!dir.mkdirs()) {
            getLogger().warning("Failed to create directory: " + path);
            return false;
        }
    }

    env.add(ENV_VAR + "=" + path);
    if (isLoggingEnabled())
        getLogger().info(ENV_VAR + ": " + path);

    return true;
}

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From source file:bme.mace.logicdomain.Evaluation.java

License:Open Source License

/**
 * Wraps a static classifier in enough source to test using the weka class
 * libraries./*from w  w w .ja va  2 s. c om*/
 * 
 * @param classifier a Sourcable Classifier
 * @param className the name to give to the source code class
 * @return the source for a static classifier that can be tested with weka
 *         libraries.
 * @throws Exception if code-generation fails
 */
public static String wekaStaticWrapper(Sourcable classifier, String className) throws Exception {

    StringBuffer result = new StringBuffer();
    String staticClassifier = classifier.toSource(className);

    result.append("// Generated with Weka " + Version.VERSION + "\n");
    result.append("//\n");
    result.append("// This code is public domain and comes with no warranty.\n");
    result.append("//\n");
    result.append("// Timestamp: " + new Date() + "\n");
    result.append("\n");
    result.append("package weka.classifiers;\n");
    result.append("\n");
    result.append("import weka.core.Attribute;\n");
    result.append("import weka.core.Capabilities;\n");
    result.append("import weka.core.Capabilities.Capability;\n");
    result.append("import weka.core.Instance;\n");
    result.append("import weka.core.Instances;\n");
    result.append("import weka.core.RevisionUtils;\n");
    result.append("import weka.classifiers.Classifier;\n");
    result.append("\n");
    result.append("public class WekaWrapper\n");
    result.append("  extends Classifier {\n");

    // globalInfo
    result.append("\n");
    result.append("  /**\n");
    result.append("   * Returns only the toString() method.\n");
    result.append("   *\n");
    result.append("   * @return a string describing the classifier\n");
    result.append("   */\n");
    result.append("  public String globalInfo() {\n");
    result.append("    return toString();\n");
    result.append("  }\n");

    // getCapabilities
    result.append("\n");
    result.append("  /**\n");
    result.append("   * Returns the capabilities of this classifier.\n");
    result.append("   *\n");
    result.append("   * @return the capabilities\n");
    result.append("   */\n");
    result.append("  public Capabilities getCapabilities() {\n");
    result.append(((Classifier) classifier).getCapabilities().toSource("result", 4));
    result.append("    return result;\n");
    result.append("  }\n");

    // buildClassifier
    result.append("\n");
    result.append("  /**\n");
    result.append("   * only checks the data against its capabilities.\n");
    result.append("   *\n");
    result.append("   * @param i the training data\n");
    result.append("   */\n");
    result.append("  public void buildClassifier(Instances i) throws Exception {\n");
    result.append("    // can classifier handle the data?\n");
    result.append("    getCapabilities().testWithFail(i);\n");
    result.append("  }\n");

    // classifyInstance
    result.append("\n");
    result.append("  /**\n");
    result.append("   * Classifies the given instance.\n");
    result.append("   *\n");
    result.append("   * @param i the instance to classify\n");
    result.append("   * @return the classification result\n");
    result.append("   */\n");
    result.append("  public double classifyInstance(Instance i) throws Exception {\n");
    result.append("    Object[] s = new Object[i.numAttributes()];\n");
    result.append("    \n");
    result.append("    for (int j = 0; j < s.length; j++) {\n");
    result.append("      if (!i.isMissing(j)) {\n");
    result.append("        if (i.attribute(j).isNominal())\n");
    result.append("          s[j] = new String(i.stringValue(j));\n");
    result.append("        else if (i.attribute(j).isNumeric())\n");
    result.append("          s[j] = new Double(i.value(j));\n");
    result.append("      }\n");
    result.append("    }\n");
    result.append("    \n");
    result.append("    // set class value to missing\n");
    result.append("    s[i.classIndex()] = null;\n");
    result.append("    \n");
    result.append("    return " + className + ".classify(s);\n");
    result.append("  }\n");

    // getRevision
    result.append("\n");
    result.append("  /**\n");
    result.append("   * Returns the revision string.\n");
    result.append("   * \n");
    result.append("   * @return        the revision\n");
    result.append("   */\n");
    result.append("  public String getRevision() {\n");
    result.append("    return RevisionUtils.extract(\"1.0\");\n");
    result.append("  }\n");

    // toString
    result.append("\n");
    result.append("  /**\n");
    result.append("   * Returns only the classnames and what classifier it is based on.\n");
    result.append("   *\n");
    result.append("   * @return a short description\n");
    result.append("   */\n");
    result.append("  public String toString() {\n");
    result.append("    return \"Auto-generated classifier wrapper, based on " + classifier.getClass().getName()
            + " (generated with Weka " + Version.VERSION + ").\\n" + "\" + this.getClass().getName() + \"/"
            + className + "\";\n");
    result.append("  }\n");

    // main
    result.append("\n");
    result.append("  /**\n");
    result.append("   * Runs the classfier from commandline.\n");
    result.append("   *\n");
    result.append("   * @param args the commandline arguments\n");
    result.append("   */\n");
    result.append("  public static void main(String args[]) {\n");
    result.append("    runClassifier(new WekaWrapper(), args);\n");
    result.append("  }\n");
    result.append("}\n");

    // actual classifier code
    result.append("\n");
    result.append(staticClassifier);

    return result.toString();
}

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From source file:gui_pt.stream.DoTaskFromGui.java

License:Open Source License

/**
 * Checks if the Weka version is recent enough to run MOA.
 * For example, if the Weka version is not recent, there may be problems
 * due to the fact that <code>Instance</code> was a class before 3.7.1 and
 * now is an interface.//from w ww . j a v a 2s.  c o  m
 *
 * @return true if the Weka version is recent.
 */
public static boolean isWekaVersionOK() {
    Version version = new Version();
    if (version.isOlder("3.7.1")) {
        System.err.println();
        System.err.println(Globals.getWorkbenchInfoString());
        System.err.println();
        System.err.print("Weka 3.7.1 or higher is required to run MOA. ");
        System.err.println("Weka version " + Version.VERSION + " found");
        return false;
    } else {
        return true;
    }
}

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From source file:moa.core.WekaUtils.java

License:Open Source License

/**
    * Checks if the Weka version is recent enough to run MOA.
    * For example, if the Weka version is not recent, there may be problems
    * due to the fact that <code>Instance</code> was a class before 3.7.1 and
    * now is an interface./* w w w  .  j a v a 2  s.  c  o  m*/
    *
    * @return true if the Weka version is recent.
    */
public static boolean isWekaVersionOK() {
    try {
        Class.forName("weka.core.Version");
        Version version = new Version();
        if (version.isOlder("3.7.1")) {
            System.err.println();
            System.err.println(Globals.getWorkbenchInfoString());
            System.err.println();
            System.err.print("Weka 3.7.1 or higher is required to run MOA. ");
            System.err.println("Weka version " + Version.VERSION + " found");
            return false;
        } else {
            return true;
        }
    } catch (ClassNotFoundException exception) {
        // It is not available
        return true;
    }
}

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