Example usage for weka.filters.unsupervised.attribute MultiInstanceToPropositional output

Introduction

In this page you can find the example usage for weka.filters.unsupervised.attribute MultiInstanceToPropositional output.

Prototype

public Instance output() 

Source Link

Document

Output an instance after filtering and remove from the output queue.

Usage

From source file:org.knime.knip.suise.node.boundarymodel.contourdata.IRI.java

License:Open Source License

private Instances toSingleInstanceDataset(Instances miData, Instances flatData) throws Exception {
    MultiInstanceToPropositional convertToProp = new MultiInstanceToPropositional();

    convertToProp.setInputFormat(miData);

    for (int i = 0; i < miData.numInstances(); i++) {
        convertToProp.input(miData.instance(i));
    }//from w  w  w.  j  a  va2s. c o m
    convertToProp.batchFinished();

    if (flatData == null) {
        flatData = convertToProp.getOutputFormat();
        flatData.deleteAttributeAt(0); // remove the bag index attribute

    }

    Instance processed;
    while ((processed = convertToProp.output()) != null) {
        processed.setDataset(null);
        processed.deleteAttributeAt(0); // remove the bag index attribute
        flatData.add(processed);
    }

    // remove class attribute
    // flatData.setClassIndex(-1);
    // flatData.deleteAttributeAt(flatData.numAttributes() - 1);

    // set weights
    int instanceIdx = 0;
    for (Instance bag : miData) {
        for (Instance instance : bag.relationalValue(1)) {
            flatData.get(instanceIdx).setWeight(instance.weight());
            instanceIdx++;
        }
    }
    return flatData;
}

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