uk.ac.ed.inf.acedemo.classifiers.Classifier.java Source code

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Here is the source code for uk.ac.ed.inf.acedemo.classifiers.Classifier.java

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/*
 * Copyright 2012 Daniel.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package uk.ac.ed.inf.acedemo.classifiers;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import java.util.ArrayList;
import uk.ac.ed.inf.ace.ReadableDocument;
import uk.ac.ed.inf.ace.SimpleEngine;
import uk.ac.ed.inf.ace.classifiers.WekaClassifier;
import weka.core.Attribute;
import weka.core.DenseInstance;
import weka.core.Instance;
import weka.core.Instances;

/**
 * @author "Daniel Renshaw" <d.renshaw@sms.ed.ac.uk>
 */
public class Classifier extends WekaClassifier<SimpleEngine, uk.ac.ed.inf.ace.config.v1.WekaClassifier> {

    public Classifier(SimpleEngine engine, uk.ac.ed.inf.ace.config.v1.WekaClassifier config) {
        super(engine, config);
    }

    @Override
    protected Instances constructInstances() {
        ArrayList<Attribute> attributes = Lists.newArrayList();
        attributes.add(new Attribute("IsSpam", ImmutableList.of("true", "false")));

        for (int index = 0; index < 57; index++) {
            attributes.add(new Attribute("Attribute" + index));
        }

        Instances instances = new Instances("Data", attributes, 1);
        instances.setClassIndex(0);
        return instances;
    }

    @Override
    protected Instance constructInstance(ReadableDocument document) {
        Instance instance = new DenseInstance(58);
        double[] values = (double[]) document.getContent();

        for (int index = 0; index < values.length; index++) {
            instance.setValue(index + 1, values[index]);
        }

        return instance;
    }
}