Example usage for java.util Collections max

List of usage examples for java.util Collections max

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Introduction

In this page you can find the example usage for java.util Collections max.

Prototype

public static <T extends Object & Comparable<? super T>> T max(Collection<? extends T> coll)

Source Link

Document

Returns the maximum element of the given collection, according to the natural ordering of its elements.

Usage

From source file:com.opengamma.util.test.DbTest.java

protected static Object[][] getParametersForSeparateMasters(int prevVersionCount) {
    String databaseType = System.getProperty("test.database.type");
    if (databaseType == null) {
        databaseType = "all";
    }//from  w  ww .jav a2 s.com
    Collection<String> databaseTypes = TestProperties.getDatabaseTypes(databaseType);
    ArrayList<Object[]> parameters = new ArrayList<Object[]>();
    for (String dbType : databaseTypes) {
        DbTool dbtool = TestProperties.getDbTool(dbType);
        dbtool.setJdbcUrl(dbtool.getTestDatabaseUrl());
        if (isScriptPublished()) {
            dbtool.addDbScriptDirectory(SCRIPT_INSTALL_DIR.getAbsolutePath());
        } else {
            dbtool.addDbScriptDirectory(DbTool.getWorkingDirectory());
        }
        for (String masterDB : dbtool.getScriptDirs().keySet()) {
            Set<Integer> versions = dbtool.getScriptDirs().get(masterDB).keySet();
            int max = Collections.max(versions);
            int min = Collections.min(versions);
            for (int v = max; v >= Math.max(max - prevVersionCount, min); v--) {
                parameters.add(new Object[] { dbType, masterDB, "" + max /*target_version*/,
                        "" + v /*migrate_from_version*/ });
            }
        }
    }
    Object[][] array = new Object[parameters.size()][];
    parameters.toArray(array);
    return array;
}

From source file:de.bund.bfr.jung.JungUtils.java

private static double getDenominator(Map<?, Double> values) {
    if (values == null || values.isEmpty()) {
        return 1.0;
    }//from  w  ww  . j a  v a2  s  . com

    double max = Collections.max(values.values());

    return max != 0.0 ? max : 1.0;
}

From source file:org.kuali.kra.questionnaire.question.QuestionServiceImpl.java

/**
 * This method determines if the questionnaire is the active (most recent version) of the questionnaire.
 * @param questionnaire/*from w  ww.  ja v  a 2 s.c  o  m*/
 * @return true if this is the active questionnaire, false otherwise
 */
@SuppressWarnings("unchecked")
protected boolean isActiveQuestionnaire(Questionnaire questionnaire) {
    Map<String, Object> fieldValues = new HashMap<String, Object>();
    fieldValues.put(QUESTIONNAIRE_ID, questionnaire.getQuestionnaireId());
    Collection<Questionnaire> questionnaires = businessObjectService.findMatching(Questionnaire.class,
            fieldValues);
    if (questionnaires.size() > 0) {
        Questionnaire maxQuestionnaire = (Questionnaire) Collections.max(questionnaires);
        if (maxQuestionnaire.getQuestionnaireRefId().equals(questionnaire.getQuestionnaireRefId())) {
            return true;
        }
    }
    return false;
}

From source file:com.linkedin.drelephant.tez.heuristics.GenericMemoryHeuristic.java

public HeuristicResult apply(TezApplicationData data) {
    if (!data.getSucceeded()) {
        return null;
    }/*  www. j a v a  2  s . c  om*/
    TezTaskData[] tasks = getTasks(data);

    List<Long> totalPhysicalMemory = new LinkedList<Long>();
    List<Long> totalVirtualMemory = new LinkedList<Long>();
    List<Long> runTime = new LinkedList<Long>();

    for (TezTaskData task : tasks) {

        if (task.isSampled()) {
            totalPhysicalMemory.add(task.getCounters().get(TezCounterData.CounterName.PHYSICAL_MEMORY_BYTES));
            totalVirtualMemory.add(task.getCounters().get(TezCounterData.CounterName.VIRTUAL_MEMORY_BYTES));
            runTime.add(task.getTotalRunTimeMs());
        }

    }

    long averagePMem = Statistics.average(totalPhysicalMemory);
    long averageVMem = Statistics.average(totalVirtualMemory);
    long maxPMem;
    long minPMem;
    try {
        maxPMem = Collections.max(totalPhysicalMemory);
        minPMem = Collections.min(totalPhysicalMemory);

    } catch (Exception exception) {
        maxPMem = 0;
        minPMem = 0;
    }
    long averageRunTime = Statistics.average(runTime);

    String containerSizeStr;

    if (!Strings.isNullOrEmpty(data.getConf().getProperty(_containerMemConf))) {
        containerSizeStr = data.getConf().getProperty(_containerMemConf);
    } else {
        containerSizeStr = getContainerMemDefaultMBytes();
    }

    long containerSize = Long.valueOf(containerSizeStr) * FileUtils.ONE_MB;

    double averageMemMb = (double) ((averagePMem) / FileUtils.ONE_MB);

    double ratio = averageMemMb / ((double) (containerSize / FileUtils.ONE_MB));

    Severity severity;

    if (tasks.length == 0) {
        severity = Severity.NONE;
    } else {
        severity = getMemoryRatioSeverity(ratio);
    }

    HeuristicResult result = new HeuristicResult(_heuristicConfData.getClassName(),
            _heuristicConfData.getHeuristicName(), severity, Utils.getHeuristicScore(severity, tasks.length));

    result.addResultDetail("Number of tasks", Integer.toString(tasks.length));
    result.addResultDetail("Maximum Physical Memory (MB)",
            tasks.length == 0 ? "0" : Long.toString(maxPMem / FileUtils.ONE_MB));
    result.addResultDetail("Minimum Physical memory (MB)",
            tasks.length == 0 ? "0" : Long.toString(minPMem / FileUtils.ONE_MB));
    result.addResultDetail("Average Physical Memory (MB)",
            tasks.length == 0 ? "0" : Long.toString(averagePMem / FileUtils.ONE_MB));
    result.addResultDetail("Average Virtual Memory (MB)",
            tasks.length == 0 ? "0" : Long.toString(averageVMem / FileUtils.ONE_MB));
    result.addResultDetail("Average Task RunTime",
            tasks.length == 0 ? "0" : Statistics.readableTimespan(averageRunTime));
    result.addResultDetail("Requested Container Memory (MB)",
            (tasks.length == 0 || containerSize == 0 || containerSize == -1) ? "0"
                    : String.valueOf(containerSize / FileUtils.ONE_MB));

    return result;

}

From source file:com.noterik.bart.fs.fscommand.dynamic.playlist.util.SBFile.java

public float[] getMinMax(int iCol) {
    List<Float> b = Arrays.asList(ArrayUtils.toObject(signals.get(iCol)));
    float[] minmax = new float[2];
    minmax[0] = Collections.min(b);
    minmax[1] = Collections.max(b);
    b = null;//from   w  ww  .jav  a  2  s.c  o m
    return minmax;
}

From source file:dkpro.similarity.algorithms.lsr.aggregate.MCS06AggregateComparator.java

private double getDirectionalRelatedness(Collection<String> stringList1, Collection<String> stringList2)
        throws SimilarityException {
    double weightedSum = 0.0;
    double idfSum = 0.0;

    for (String w1 : stringList1) {
        try {//from w  w  w  . j a v  a 2s  . com
            w1 = w1.toLowerCase();
        } catch (NullPointerException e) {
            // Ignore
            continue;
        }

        Set<Double> subscores = new HashSet<Double>();

        for (String w2 : stringList2) {
            try {
                w2 = w2.toLowerCase();

                Set<String> wordset = new HashSet<String>();
                wordset.add(w1);
                wordset.add(w2);

                double score;
                if (cache.containsKey(wordset)) {
                    score = cache.get(wordset);
                } else {
                    score = measure.getSimilarity(w1, w2);
                    cache.put(wordset, score);
                }

                subscores.add(score);
            } catch (NullPointerException e) {
                // Ignore
            }
        }

        // Get best score for the pair (w1, w2)
        double bestSubscore = 0.0;

        if (stringList2.size() > 0) {
            if (measure.isDistanceMeasure()) {
                bestSubscore = Collections.min(subscores);
            } else {
                bestSubscore = Collections.max(subscores);
            }

            // Handle error cases such as "not found"
            if (bestSubscore < 0.0) {
                bestSubscore = 0.0;
            }
        }

        // Weight
        double weightedScore;
        if (idfValues.containsKey(w1)) {
            weightedScore = bestSubscore * idfValues.get(w1);

            weightedSum += weightedScore;
            idfSum += idfValues.get(w1);
        } else {
            // Well, ignore this token.
            //System.out.println("Ignoring token: \"" + w1 + "\"");
        }
    }

    return weightedSum / idfSum;
}

From source file:it.unifi.rcl.chess.traceanalysis.Trace.java

public double getMax() {
    return Collections.max(data);
}

From source file:org.kuali.coeus.common.questionnaire.impl.question.QuestionServiceImpl.java

/**
 * This method determines if the questionnaire is the active (most recent version) of the questionnaire.
 * @param questionnaire//from w ww  . jav  a2 s.c o m
 * @return true if this is the active questionnaire, false otherwise
 */
@SuppressWarnings("unchecked")
protected boolean isActiveQuestionnaire(Questionnaire questionnaire) {
    Map<String, Object> fieldValues = new HashMap<String, Object>();
    fieldValues.put(QuestionnaireConstants.QUESTIONNAIRE_SEQUENCE_ID_PARAMETER_NAME,
            questionnaire.getQuestionnaireSeqId());
    Collection<Questionnaire> questionnaires = businessObjectService.findMatching(Questionnaire.class,
            fieldValues);
    if (questionnaires.size() > 0) {
        Questionnaire maxQuestionnaire = (Questionnaire) Collections.max(questionnaires);
        if (maxQuestionnaire.getId().equals(questionnaire.getId())) {
            return true;
        }
    }
    return false;
}

From source file:net.librec.recommender.AbstractRecommender.java

/**
 * setup// w  w  w  .  j a v a2s . c  o  m
 *
 * @throws LibrecException if error occurs during setup
 */
protected void setup() throws LibrecException {
    conf = context.getConf();
    isRanking = conf.getBoolean("rec.recommender.isranking");
    if (isRanking) {
        topN = conf.getInt("rec.recommender.ranking.topn", 10);
        if (this.topN <= 0) {
            throw new IndexOutOfBoundsException("rec.recommender.ranking.topn should be more than 0!");
        }
    }
    earlyStop = conf.getBoolean("rec.recommender.earlystop", false);
    verbose = conf.getBoolean("rec.recommender.verbose", true);

    trainMatrix = (SparseMatrix) getDataModel().getTrainDataSet();
    testMatrix = (SparseMatrix) getDataModel().getTestDataSet();
    validMatrix = (SparseMatrix) getDataModel().getValidDataSet();
    userMappingData = getDataModel().getUserMappingData();
    itemMappingData = getDataModel().getItemMappingData();

    numUsers = trainMatrix.numRows();
    numItems = trainMatrix.numColumns();
    numRates = trainMatrix.size();
    ratingScale = new ArrayList<>(trainMatrix.getValueSet());
    Collections.sort(ratingScale);
    maxRate = Collections.max(trainMatrix.getValueSet());
    minRate = Collections.min(trainMatrix.getValueSet());
    globalMean = trainMatrix.mean();

    int[] numDroppedItemsArray = new int[numUsers]; // for AUCEvaluator
    int maxNumTestItemsByUser = 0; //for idcg
    for (int userIdx = 0; userIdx < numUsers; ++userIdx) {
        numDroppedItemsArray[userIdx] = numItems - trainMatrix.rowSize(userIdx);
        int numTestItemsByUser = testMatrix.rowSize(userIdx);
        maxNumTestItemsByUser = maxNumTestItemsByUser < numTestItemsByUser ? numTestItemsByUser
                : maxNumTestItemsByUser;
    }
    conf.setInts("rec.eval.auc.dropped.num", numDroppedItemsArray);
    conf.setInt("rec.eval.item.test.maxnum", maxNumTestItemsByUser);
}

From source file:uk.ac.ebi.atlas.bioentity.properties.BioEntityPropertyService.java

private List<PropertyLink> fetchRelevantGoLinks(int includeAtLeast) {
    List<PropertyLink> propertyLinks = Lists.newArrayList();

    if (!depthToGoTerms.isEmpty()) {
        for (int i = Collections.max(depthToGoTerms.keySet()); i >= 1
                && propertyLinks.size() < includeAtLeast; i--) {
            for (GoPoTerm goPoTerm : depthToGoTerms.get(i)) {
                Optional<PropertyLink> link = linkBuilder.createLink(identifier, "go", goPoTerm.accession(),
                        species);/*from   ww w. j  av a 2  s  .  com*/
                if (link.isPresent()) {
                    propertyLinks.add(link.get());
                }
            }
        }
    }

    return propertyLinks;
}