protected HashMap<String, Object> selectAttribute(
ArrayList<DataInstance> instances, ArrayList<Integer> attributeList) {
Random r = new Random();
Integer attr = attributeList.get(r.nextInt(attributeList.size()));
selectedInstances = new HashMap<Integer, ArrayList<DataInstance>>();
ArrayList<DataInstance> data;
for (DataInstance di : instances) {
int value = di.getAttributes().get(attr.intValue()).intValue();
if (selectedInstances.containsKey(value)) {
data = selectedInstances.get(value);
data.add(di);
selectedInstances.put(value, data);
} else {
data = new ArrayList<DataInstance>();
data.add(di);
selectedInstances.put(value, data);
}
}
HashMap<String, Object> choice = new HashMap<String, Object>();
choice.put("attribute", attr);
choice.put("discrete", "true");
choice.put("multiway", "true");
return choice;
}
@Override
public List<DataInstance> getDataFromFile(String fileName, int inputDim, int outputDim) {
List<DataInstance> data = new ArrayList<DataInstance>();
try {
Scanner scn = new Scanner(new File(fileName));
while (scn.hasNextLine()) {
String[] line = scn.nextLine().split("\\s+|,");
double[] arr = new double[line.length];
for (int i = 0; i < line.length; i++) arr[i] = Double.parseDouble(line[i]);
DataInstance d = new DataInstance(inputDim, outputDim, arr);
double[] out = d.getOutputTruthValue();
if (out[0] == 1) out = new double[] {1, 0};
else out = new double[] {0, 1};
d.replaceOutputTruthValue(out);
data.add(d);
}
scn.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return data;
}
@Override
public void send(Enum<?> msgId, DustObject msgOb, boolean wait, ResponseProcessor respProc) {
data.send(this, msgId, msgOb, wait, respProc);
}
@Override
public DustObject getNeighbor(DustIdentifier typeId) {
return data.getNeighbor(typeId);
}
@Override
public Variant getFieldVariant(int idx) {
return data.getFieldVariant(idx);
}
@Override
public boolean isNull(int idx) {
return data.isNull(idx);
}
@Override
public int getFieldCount() {
return data.getFieldCount();
}
@Override
public DustIdentifier getObTypeID() {
return data.getObTypeID();
}
@Override
public Entity getEntity() {
return data.getEntity();
}