Example usage for org.apache.commons.math3.stat.descriptive SummaryStatistics SummaryStatistics

List of usage examples for org.apache.commons.math3.stat.descriptive SummaryStatistics SummaryStatistics

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Introduction

In this page you can find the example usage for org.apache.commons.math3.stat.descriptive SummaryStatistics SummaryStatistics.

Prototype

public SummaryStatistics()

Source Link

Document

Construct a SummaryStatistics instance

Usage

From source file:io.galeb.router.tests.hostselectors.AbstractHashHostSelectorTest.java

void doRandomTest(double errorPercentMax, double limitOfNotHitsPercent, int numPopulation) {
    final HttpServerExchange exchange = new HttpServerExchange(null);
    final Host[] newHosts = numPopulation < hosts.length ? Arrays.copyOf(hosts, numPopulation) : hosts;
    final Map<Integer, String> remains = IntStream.rangeClosed(0, newHosts.length - 1).boxed()
            .collect(Collectors.toMap(x -> x, x -> ""));

    for (int retry = 1; retry <= NUM_RETRIES; retry++) {
        final SummaryStatistics statisticsOfResults = new SummaryStatistics();

        final Map<Integer, Integer> mapOfResults = new HashMap<>();
        new Random().ints(numPopulation).map(Math::abs).forEach(x -> {
            changeExchange(exchange, x);
            int result = getResult(exchange, newHosts);
            Integer lastCount = mapOfResults.get(result);
            remains.remove(result);//  ww  w  .  j  a va2s .  co m
            mapOfResults.put(result, lastCount != null ? ++lastCount : 0);
        });
        mapOfResults.entrySet().stream().mapToDouble(Map.Entry::getValue)
                .forEach(statisticsOfResults::addValue);
        double errorPercent = (statisticsOfResults.getStandardDeviation() / numPopulation) * 100;
        assertThat(errorPercent, lessThan(errorPercentMax));
    }
    final List<Integer> listOfNotHit = remains.entrySet().stream().map(Map.Entry::getKey).collect(toList());
    assertThat(listOfNotHit.size(), lessThanOrEqualTo((int) (newHosts.length * (limitOfNotHitsPercent / 100))));
}

From source file:io.fabric8.example.stddev.http.StdDevProcessorTest.java

@Test
public void testProcess() throws Exception {
    RandomGenerator rg = new JDKRandomGenerator();
    double[] array = new double[10];
    ObjectMapper objectMapper = new ObjectMapper();
    for (int i = 0; i < array.length; i++) {
        array[i] = rg.nextDouble();// w ww. ja v  a2s . c o m
    }
    String body = objectMapper.writeValueAsString(array);
    SummaryStatistics summaryStatistics = new SummaryStatistics();
    List<Double> list = new ObjectMapper().readValue(body, List.class);
    for (Double value : list) {
        summaryStatistics.addValue(value);
    }
    String stdDev = Double.toString(summaryStatistics.getStandardDeviation());

    resultEndpoint.expectedBodiesReceived(stdDev);

    template.sendBody(body);

    resultEndpoint.assertIsSatisfied();
}

From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.Timing.java

/**
 * Stops the timer with the specified name.
 * /*from  ww w  .  j  a v a2s  . c o m*/
 * @param name the name of the timer to stop
 */
public static void stopTimer(String name) {
    long stopTime = System.nanoTime();

    Long startTime = openTimers.remove(name);
    if (startTime == null) {
        throw new IllegalArgumentException("timer does not exist");
    }

    SummaryStatistics statistics = data.get(name);
    if (statistics == null) {
        statistics = new SummaryStatistics();
        data.put(name, statistics);
    }

    statistics.addValue(stopTime - startTime);
}

From source file:io.fabric8.example.variance.http.VarianceProcessorTest.java

@Test
public void testProcess() throws Exception {
    RandomGenerator rg = new JDKRandomGenerator();
    double[] array = new double[10];
    ObjectMapper objectMapper = new ObjectMapper();
    for (int i = 0; i < array.length; i++) {
        array[i] = rg.nextDouble();/*  ww  w  .  j a va 2s .  co m*/
    }
    String body = objectMapper.writeValueAsString(array);
    String expectedBody = "0.0";
    SummaryStatistics summaryStatistics = new SummaryStatistics();
    List<Double> list = new ObjectMapper().readValue(body, List.class);
    for (Double value : list) {
        summaryStatistics.addValue(value);
    }
    String variance = Double.toString(summaryStatistics.getVariance());

    resultEndpoint.expectedBodiesReceived(variance);

    template.sendBody(body);

    resultEndpoint.assertIsSatisfied();
}

From source file:net.sourceforge.jabm.report.SummaryStatisticsReportVariables.java

@Override
public void compute(SimEvent event) {
    super.compute(event);
    reportVariables.compute(event);/* w ww.j  av a  2s  .com*/
    Map<Object, Number> bindings = reportVariables.getVariableBindings();
    for (Object variable : bindings.keySet()) {
        SummaryStatistics stats = summaryVariableBindings.get(variable);
        if (stats == null) {
            stats = new SummaryStatistics();
            summaryVariableBindings.put(variable, stats);
        }
        stats.addValue(bindings.get(variable).doubleValue());
    }
}

From source file:net.sourceforge.jabm.util.SummaryStats.java

public void initialise() {
    stats = new SummaryStatistics();
}

From source file:io.fabric8.example.stddev.msg.StdDevProcessor.java

@Override
public void process(Exchange exchange) throws Exception {
    System.err.println("STD DEV GOT EXCHANGE " + exchange);
    String message = exchange.getIn().getBody(String.class);
    ObjectMapper objectMapper = new ObjectMapper();
    TypeFactory typeFactory = objectMapper.getTypeFactory();
    List<Double> values = objectMapper.readValue(message,
            typeFactory.constructCollectionType(List.class, Double.class));
    SummaryStatistics summaryStatistics = new SummaryStatistics();
    List<Double> list = new ObjectMapper().readValue(message, List.class);
    for (Double value : list) {
        summaryStatistics.addValue(value);
    }// w ww .  j av  a 2s.  c om
    String stdDev = Double.toString(summaryStatistics.getStandardDeviation());

    ActiveMQDestination replyTo = exchange.getIn().getHeader("JMSReplyTo", ActiveMQDestination.class);
    final String messageId = exchange.getIn().getHeader("JMSMessageID", String.class);

    if (replyTo != null) {
        Exchange copy = new DefaultExchange(exchange);
        copy.setPattern(ExchangePattern.InOnly);
        copy.getIn().setHeader(Variables.CORRELATION_HEADER, messageId);
        copy.getIn().setBody(stdDev);
        producerTemplate.send("jms:queue:" + replyTo.getPhysicalName(), copy);
    }
}

From source file:io.fabric8.example.variance.msg.VarianceProcessor.java

@Override
public void process(Exchange exchange) throws Exception {
    System.err.println("VARIANCE GOT EXCHANGE " + exchange);
    String message = exchange.getIn().getBody(String.class);
    ObjectMapper objectMapper = new ObjectMapper();
    TypeFactory typeFactory = objectMapper.getTypeFactory();
    List<Double> values = objectMapper.readValue(message,
            typeFactory.constructCollectionType(List.class, Double.class));
    SummaryStatistics summaryStatistics = new SummaryStatistics();
    List<Double> list = new ObjectMapper().readValue(message, List.class);
    for (Double value : list) {
        summaryStatistics.addValue(value);
    }/*from  w  ww .ja  va2s.c  om*/
    String variance = Double.toString(summaryStatistics.getVariance());
    ActiveMQDestination replyTo = exchange.getIn().getHeader("JMSReplyTo", ActiveMQDestination.class);
    final String messageId = exchange.getIn().getHeader("JMSMessageID", String.class);

    if (replyTo != null) {
        Exchange copy = new DefaultExchange(exchange);
        copy.setPattern(ExchangePattern.InOnly);
        copy.getIn().setHeader(Variables.CORRELATION_HEADER, messageId);
        copy.getIn().setBody(variance);
        producerTemplate.send("jms:queue:" + replyTo.getPhysicalName(), copy);
        System.err.println("REPLIED TO " + "jms:queue:" + replyTo.getPhysicalName());
    } else {
        System.err.println("REPLOY NOT SET for exchange: " + exchange.getIn().getHeaders());
    }
}

From source file:io.druid.query.aggregation.datasketches.tuple.ArrayOfDoublesSketchToMeansPostAggregator.java

@Override
public double[] compute(final Map<String, Object> combinedAggregators) {
    final ArrayOfDoublesSketch sketch = (ArrayOfDoublesSketch) getField().compute(combinedAggregators);
    final SummaryStatistics[] stats = new SummaryStatistics[sketch.getNumValues()];
    Arrays.setAll(stats, i -> new SummaryStatistics());
    final ArrayOfDoublesSketchIterator it = sketch.iterator();
    while (it.next()) {
        final double[] values = it.getValues();
        for (int i = 0; i < values.length; i++) {
            stats[i].addValue(values[i]);
        }/*from   ww w .  ja v a 2s  . c  o m*/
    }
    final double[] means = new double[sketch.getNumValues()];
    Arrays.setAll(means, i -> stats[i].getMean());
    return means;
}

From source file:io.druid.query.aggregation.datasketches.tuple.ArrayOfDoublesSketchToVariancesPostAggregator.java

@Override
public double[] compute(final Map<String, Object> combinedAggregators) {
    final ArrayOfDoublesSketch sketch = (ArrayOfDoublesSketch) getField().compute(combinedAggregators);
    final SummaryStatistics[] stats = new SummaryStatistics[sketch.getNumValues()];
    Arrays.setAll(stats, i -> new SummaryStatistics());
    final ArrayOfDoublesSketchIterator it = sketch.iterator();
    while (it.next()) {
        final double[] values = it.getValues();
        for (int i = 0; i < values.length; i++) {
            stats[i].addValue(values[i]);
        }/* w  w  w .  j  a  v  a2s  .  c  o m*/
    }
    final double[] variances = new double[sketch.getNumValues()];
    Arrays.setAll(variances, i -> stats[i].getVariance());
    return variances;
}