Examples with SummaryStatistics org.talend.dataquality.statistics.numeric.summary.SummaryStatistics used on opensource projects

Example 1 with SummaryStatistics

use of org.talend.dataquality.statistics.numeric.summary.SummaryStatistics in project data-prep by Talend.

the class StatisticsUtilsTest method adaptColumn.

private void adaptColumn(final ColumnMetadata column, final DataTypeEnum type) {
    Analyzers.Result result = new Analyzers.Result();
    // Data type
    DataTypeOccurences dataType = new DataTypeOccurences();
    dataType.increment(type);
    result.add(dataType);
    // Semantic type
    SemanticType semanticType = new SemanticType();
    CategoryFrequency category1 = new CategoryFrequency("category 1", "category 1");
    category1.setScore(99);
    semanticType.increment(category1, 1);
    result.add(semanticType);
    // Suggested types
    CategoryFrequency category2 = new CategoryFrequency("category 2", "category 2");
    category2.setScore(81);
    semanticType.increment(category2, 1);
    CategoryFrequency category3 = new CategoryFrequency("category 3", "category 3");
    category3.setScore(50);
    semanticType.increment(category3, 1);
    // Value quality
    ValueQualityStatistics valueQualityStatistics = new ValueQualityStatistics();
    valueQualityStatistics.setEmptyCount(10);
    valueQualityStatistics.setInvalidCount(20);
    valueQualityStatistics.setValidCount(30);
    result.add(valueQualityStatistics);
    // Cardinality
    CardinalityStatistics cardinalityStatistics = new CardinalityStatistics();
    cardinalityStatistics.incrementCount();
    cardinalityStatistics.add("distinctValue");
    result.add(cardinalityStatistics);
    // Data frequency
    DataTypeFrequencyStatistics dataFrequencyStatistics = new DataTypeFrequencyStatistics();
    dataFrequencyStatistics.add("frequentValue1");
    dataFrequencyStatistics.add("frequentValue1");
    dataFrequencyStatistics.add("frequentValue2");
    dataFrequencyStatistics.add("frequentValue2");
    result.add(dataFrequencyStatistics);
    // Pattern frequency
    PatternFrequencyStatistics patternFrequencyStatistics = new PatternFrequencyStatistics();
    patternFrequencyStatistics.add("999a999");
    patternFrequencyStatistics.add("999a999");
    patternFrequencyStatistics.add("999aaaa");
    patternFrequencyStatistics.add("999aaaa");
    result.add(patternFrequencyStatistics);
    // Quantiles
    QuantileStatistics quantileStatistics = new QuantileStatistics();
    quantileStatistics.add(1d);
    quantileStatistics.add(2d);
    quantileStatistics.endAddValue();
    result.add(quantileStatistics);
    // Summary
    SummaryStatistics summaryStatistics = new SummaryStatistics();
    summaryStatistics.addData(1d);
    summaryStatistics.addData(2d);
    result.add(summaryStatistics);
    // Histogram
    StreamNumberHistogramStatistics histogramStatistics = new StreamNumberHistogramStatistics();
    histogramStatistics.setNumberOfBins(2);
    histogramStatistics.add(1);
    histogramStatistics.add(2);
    result.add(histogramStatistics);
    // Text length
    TextLengthStatistics textLengthStatistics = new TextLengthStatistics();
    textLengthStatistics.setMaxTextLength(30);
    textLengthStatistics.setMinTextLength(10);
    textLengthStatistics.setSumTextLength(40);
    textLengthStatistics.setCount(5);
    result.add(textLengthStatistics);
    StatisticsAdapter adapter = new StatisticsAdapter(40);
    adapter.adapt(Collections.singletonList(integerColumn), Collections.singletonList(result));
    adapter.adapt(Collections.singletonList(stringColumn), Collections.singletonList(result));
}

Example 2 with SummaryStatistics

use of org.talend.dataquality.statistics.numeric.summary.SummaryStatistics in project data-prep by Talend.

the class StatisticsAdapter method injectNumberSummary.

/**
 * Injects numerical statistics like max, min to statistics of the specified column metadata.
 *
 * For columns of type date, min and max values are retrieved from the date histogram
 *
 * @param column the specified column metadata
 * @param result the analyzer result
 */
private void injectNumberSummary(final ColumnMetadata column, final Analyzers.Result result) {
    if (result.exist(SummaryStatistics.class)) {
        final Statistics statistics = column.getStatistics();
        final SummaryStatistics summaryStatistics = result.get(SummaryStatistics.class);
        statistics.setMean(summaryStatistics.getMean());
        statistics.setVariance(summaryStatistics.getVariance());
        // if the column is of type Date
        if (DATE.isAssignableFrom(column.getType()) && result.exist(StreamDateHistogramStatistics.class)) {
            final DateHistogram histogram = (DateHistogram) result.get(StreamDateHistogramStatistics.class).getHistogram();
            statistics.setMax(histogram.getMaxUTCEpochMilliseconds());
            statistics.setMin(histogram.getMinUTCEpochMilliseconds());
        } else {
            statistics.setMax(summaryStatistics.getMax());
            statistics.setMin(summaryStatistics.getMin());
        }
    }
}