Examples of org.integratedmodelling.riskwiz.learning.data.Instances

Package org.integratedmodelling.riskwiz.learning.data

Examples of org.integratedmodelling.riskwiz.learning.data.Instances

org.integratedmodelling.riskwiz.learning.data.Instances
all the instances in the file (ARFF, CSV, XRFF, ...) DataSource source = new DataSource(filename); Instances instances = source.getDataSet(); // Make the last attribute be the class instances.setClassIndex(instances.numAttributes() - 1); // Print header and instances. System.out.println("\nDataset:\n"); System.out.println(instances); ...
All methods that change a set of instances are safe, ie. a change of a set of instances does not affect any other sets of instances. All methods that change a datasets's attribute information clone the dataset before it is changed. @author Eibe Frank (eibe@cs.waikato.ac.nz) @author Len Trigg (trigg@cs.waikato.ac.nz) @author FracPete (fracpete at waikato dot ac dot nz) @version $Revision: 1.73 $


        while ((inst = m_ArffReader.readInstance(m_structure)) != null) {
            m_structure.add(inst);
        }
    
        Instances readIn = new Instances(m_structure);
    
        return readIn;
    }

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     * builds up the XML structure based on the given data
     * 
     * @param data  data to generate the XML from
     */
    public void setInstances(Instances data) {
        m_Instances = new Instances(data);
        clear();
        headerToXML();
        dataToXML();
    }

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        case Attribute.RELATIONAL:
            list = getChildTags(node, TAG_ATTRIBUTES);
            node = (Element) list.get(0);
            atts = createAttributes(node, new int[1]);
            if (metadata == null) {
                result = new Attribute(name, new Instances(name, atts, 0));
            } else {
                result = new Attribute(name, new Instances(name, atts, 0),
                        metadata);
            }
            break;
        }

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        Vector  list;
        Vector  subList;
        double[]  values;
        String  content;
        double  weight;
        Instances  data;
    
        result = null;


        // sparse?
        sparse = (parent.getAttribute(ATT_TYPE).equals(VAL_SPARSE));

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     * @param parent  the instances node
     * @return    the generated Instances
     * @throws Exception  if generation fails, e.g., due to unknown attribute type
     */
    protected Instances createInstances(Instances header, Element parent) throws Exception {
        Instances  result;
        Vector  list;
        int    i;
    
        result = new Instances(header, 0);
    
        list = getChildTags(parent, TAG_INSTANCE);
        for (i = 0; i < list.size(); i++) {
            result.add(createInstance(result, (Element) list.get(i)));
        }
    
        return result;
    }

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     * 
     * @return    the generated header
     * @throws Exception  if generation fails
     */
    protected Instances headerFromXML() throws Exception {
        Instances  result;
        Element  root;
        Element  node;
        Vector  list;
        FastVector  atts;
        Version  version;
        int[]  classIndex;


        root = m_Document.getDocumentElement();
    
        // check version
        version = new Version();
        // if (version.isOlder(root.getAttribute(ATT_VERSION)))
        // System.out.println(
        // "WARNING: loading data of version " + root.getAttribute(ATT_VERSION)
        // + " with version " + Version.VERSION);
    
        // attributes
        list = getChildTags(root, TAG_HEADER);
        node = (Element) list.get(0);
        list = getChildTags(node, TAG_ATTRIBUTES);
        node = (Element) list.get(0);
        classIndex = new int[1];
        atts = createAttributes(node, classIndex);


        // generate header
        result = new Instances(root.getAttribute(ATT_NAME), atts, 0);
        result.setClassIndex(classIndex[0]);
    
        return result;
    }

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            throw new IOException("No source has been specified");
        }


        // We could cache a structure-only if getStructure is likely to be called
        // many times.
        return new Instances(m_Dataset, 0);
    }

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     * @param header  the header structure
     * @return    the complete dataset
     * @throws Exception  if generation fails
     */
    protected Instances dataFromXML(Instances header) throws Exception {
        Instances  result;
        Element  node;
        Vector  list;


        list = getChildTags(m_Document.getDocumentElement(), TAG_BODY);
        node = (Element) list.get(0);

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                }
                r = new BufferedReader(new InputStreamReader(in));
            }
      
            if (args[0].endsWith(Instances.FILE_EXTENSION)) {
                XMLInstances i = new XMLInstances(new Instances(r));


                System.out.println(i.toString());
            } else {
                Instances i = new XMLInstances(r).getInstances();


                System.out.println(i.toSummaryString());
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            System.err.println(ex.getMessage());
        }

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         * 
         * @return      the full dataset
         * @throws Exception   if resetting of loader fails
         */
        public Instances getDataSet() throws Exception {
            Instances    result;
        
            result = null;
        
            // reset the loader
            reset();

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