Java BasicMLData类代码示例

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
@Override
public MLData getOutput() {
	
	//waitTillStabilized();
	
	final MLData output = new BasicMLData(nodes.length);
	NormalizedField norm = new NormalizedField(NormalizationAction.Normalize, 
			null,IFSpikingNeuron.THRESHOLD,0,1,0);
	
	//now stabilized
	for (int i=0; i<nodes.length; i++){
		//output.setData(i,norm.normalize(nodes[i].getMembranePotential()));
		output.setData(i,nodes[i].getMembranePotential());

	}
	
	return output;
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
public int enquireNeuralNetwork(final BasicNetwork neuralNetwork, DataPoint dataPoint) {
	MLData input = new BasicMLData(2);
	input.setData(0, dataPoint.getX());
	input.setData(1, dataPoint.getY());
	MLData output = neuralNetwork.compute(input);

	// Check to see which button has the highest output
	double buttons[] = output.getData();
	int buttonIndex = -1;
	for (int i = 0; i < buttons.length; i++) {
		if (buttons[i] > 0 && (buttonIndex == -1 || buttons[i] > buttons[buttonIndex])) {
			buttonIndex = i;
		}
	}

	return buttonIndex;
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
@Override
public void updatePredictions(SensorModel model) {
    RealVector vec = sensorsToVector(model, mNorm);
    MLData prediction = mNN.compute(new BasicMLData(vec.toArray()));

    mPredictions = new ArrayRealVector(prediction.getData());
    mNorm.denormalizeOutput(mPredictions, 0, 1);
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
/**
 * 
 * @return An array containing all of the times in which spikes occured in discrete time
 */
public MLData getOutput2() {
	final MLData output = new BasicMLData(nodes.length);
	logger.debug("Output Spike Trains:");
	for (int i=0; i<nodes.length; i++){
		double [] spikes = nodes[i].getFiringTimes();
		logger.info(nodes[i].toString() + " = " + Arrays.toString(spikes));
	}
	return output;
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
public void setData(double[][] p) {
    for(int i = 0 ; i < p.length; i ++){
        double[] input  = p[i];
        
        MLDataPair pair = new BasicMLDataPair(new BasicMLData(input), new BasicMLData(input));
        
        dataset.add(pair);
    }
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public int move(Board board, int player) throws NoValidMoveException {
	super.move(board, player);
	int[][] state = board.getState();

	/*
	 * State matrix should be with valid dimensions.
	 */
	int size = 0;
	for (int i = 0; i < state.length; i++) {
		size += state[i].length;
	}

	/*
	 * Encode in the input the player who is playing.
	 */
	size += NUMBER_OF_PLAYERS;

	/*
	 * Check ANN input layer size.
	 */
	if (size != net.getInputCount()) {
		throw new NoValidMoveException();
	}

	/*
	 * Scale input in the range of [0.0-1.0].
	 */
	double input[] = new double[size];
	for (int i = 0, k = 0; i < state.length; i++) {
		for (int j = 0; j < state[i].length; j++, k++) {
			input[k] = (state[i][j] - min) / (max - min);
		}
	}

	/*
	 * Mark the player who is playing.
	 */
	for (int i = input.length - NUMBER_OF_PLAYERS, p = 1; i < input.length; i++, p++) {
		if (player == p) {
			input[i] = 1;
		} else {
			input[i] = 0;
		}
	}

	/*
	 * Feed the ANN input. ANN calculation.
	 */
	MLData data = new BasicMLData(input);
	data = net.compute(data);

	/*
	 * Obtain the ANN output.
	 */
	double output[] = data.getData();

	/*
	 * Suggest move.
	 */
	int index = 0;
	for (int i = 0; i < output.length; i++) {
		if (output[i] > output[index]) {
			index = i;
		}
	}

	return index;
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
@Override
public void load(GuaguaWritableAdapter<LongWritable> currentKey, GuaguaWritableAdapter<Text> currentValue,
        WorkerContext<NNParams, NNParams> workerContext) {
    ++this.count;
    if((this.count) % 100000 == 0) {
        LOG.info("Read {} records.", this.count);
    }

    // use guava to iterate only once
    double[] ideal = new double[1];
    int inputNodes = NumberFormatUtils.getInt(
            workerContext.getProps().getProperty(NNConstants.GUAGUA_NN_INPUT_NODES),
            NNConstants.GUAGUA_NN_DEFAULT_INPUT_NODES);
    double[] inputs = new double[inputNodes];

    int i = 0;
    for(String input: Splitter.on(NNConstants.NN_DEFAULT_COLUMN_SEPARATOR).split(
            currentValue.getWritable().toString())) {
        if(i == 0) {
            ideal[i++] = NumberFormatUtils.getDouble(input, 0.0d);
        } else {
            int inputsIndex = (i++) - 1;
            if(inputsIndex >= inputNodes) {
                break;
            }
            inputs[inputsIndex] = NumberFormatUtils.getDouble(input, 0.0d);
        }
    }

    if(i < (inputNodes + 1)) {
        throw new GuaguaRuntimeException(String.format(
                "Not enough data columns, input nodes setting:%s, data column:%s", inputNodes, i));
    }

    int scale = NumberFormatUtils.getInt(workerContext.getProps().getProperty(NNConstants.NN_RECORD_SCALE), 1);
    for(int j = 0; j < scale; j++) {
        double[] tmpInputs = j == 0 ? inputs : new double[inputs.length];
        double[] tmpIdeal = j == 0 ? ideal : new double[ideal.length];
        System.arraycopy(inputs, 0, tmpInputs, 0, inputs.length);
        MLDataPair pair = new BasicMLDataPair(new BasicMLData(tmpInputs), new BasicMLData(tmpIdeal));
        double r = Math.random();
        if(r >= 0.5d) {
            this.trainingData.add(pair);
        } else {
            this.testingData.add(pair);
        }
    }
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
public void train(final ArrayList<DataPoint> dataHistory) {
	if (isTraining()) {
		throw new IllegalStateException();
	}

	setTrainerThread(new Thread() {
		public void run() {
			// Clean and normalize the data history
			ArrayList<DataPoint> cleanedDataHistory = cleanDataHistory(dataHistory);
			ArrayList<DataPoint> normalizedDataHistory = normalizeDataHistory(cleanedDataHistory);

			// Create a new neural network and data set
			BasicNetwork neuralNetwork = EncogUtility.simpleFeedForward(2, getHiddenLayerNeurons(0),
					getHiddenLayerNeurons(1), 5, true);
			MLDataSet dataSet = new BasicMLDataSet();

			// Add all points of the data history to the data set
			for (DataPoint dataPoint : normalizedDataHistory) {
				MLData input = new BasicMLData(2);
				input.setData(0, dataPoint.getX());
				input.setData(1, dataPoint.getY());

				// If getButton() is 0, the output will be 0, 0, 0, 0
				// If getButton() is 2, the output will be 0, 1, 0, 0
				// If getButton() is 4, the output will be 0, 0, 0, 1
				MLData ideal = new BasicMLData(5);
				for (int i = 0; i <= 4; i++) {
					ideal.setData(i, (dataPoint.getButton() == i) ? 1 : 0);
				}

				MLDataPair pair = new BasicMLDataPair(input, ideal);
				dataSet.add(pair);
			}

			// Create a training method
			MLTrain trainingMethod = new ResilientPropagation((ContainsFlat) neuralNetwork, dataSet);
			long startTime = System.currentTimeMillis();
			int timeLeft = getMaxTrainingTime();
			int iteration = 0;

			// Train the network using multiple iterations on the training method
			do {
				trainingMethod.iteration();
				timeLeft = (int) ((startTime + getMaxTrainingTime()) - System.currentTimeMillis());
				iteration++;

				sendNeuralNetworkIteration(iteration, trainingMethod.getError(), timeLeft);
			} while (trainingMethod.getError() > getMaxTrainingError() && timeLeft > 0
					&& !trainingMethod.isTrainingDone());
			trainingMethod.finishTraining();

			// Return the neural network to all listeners
			sendNeuralNetworkTrainerResult(neuralNetwork);
		}
	});
	getTrainerThread().start();
}
 

import org.encog.ml.data.basic.BasicMLData; //导入依赖的package包/类
public void addData(double[] p ){
    MLDataPair pair = new BasicMLDataPair(new BasicMLData(p), new BasicMLData(p));
    dataset.add(pair);
}