Examples with SemanticType org.talend.dataquality.semantic.statistics.SemanticType used on opensource projects

Example 1 with SemanticType

use of org.talend.dataquality.semantic.statistics.SemanticType in project data-prep by Talend.

the class StatisticsAdapter method injectSemanticTypes.

private void injectSemanticTypes(final ColumnMetadata column, final Analyzers.Result result) {
    if (result.exist(SemanticType.class) && !column.isDomainForced()) {
        final SemanticType semanticType = result.get(SemanticType.class);
        final List<CategoryFrequency> suggestedTypes = semanticType.getSuggestedCategories();
        // TDP-471: Don't pick semantic type if lower than a threshold.
        final Optional<CategoryFrequency> bestMatch = // 
        suggestedTypes.stream().filter(// 
        e -> !e.getCategoryName().isEmpty()).findFirst();
        if (bestMatch.isPresent()) {
            // TODO (TDP-734) Take into account limit of the semantic analyzer.
            final float score = bestMatch.get().getScore();
            if (score > semanticThreshold) {
                updateMetadataWithCategoryInfo(column, bestMatch.get());
            } else {
                // Ensure the domain is cleared if score is lower than threshold (earlier analysis - e.g.
                // on the first 20 lines - may be over threshold, but full scan may decide otherwise.
                resetDomain(column);
            }
        } else if (StringUtils.isNotEmpty(column.getDomain())) {
            // Column *had* a domain but seems like new analysis removed it.
            resetDomain(column);
        }
        // Keep all suggested semantic categories in the column metadata
        List<SemanticDomain> semanticDomains = // 
        suggestedTypes.stream().map(// 
        this::toSemanticDomain).filter(// 
        semanticDomain -> semanticDomain != null && semanticDomain.getScore() >= 1).limit(// 
        10).collect(Collectors.toList());
        column.setSemanticDomains(semanticDomains);
    }
}

Example 2 with SemanticType

use of org.talend.dataquality.semantic.statistics.SemanticType in project data-prep by Talend.

the class TypeUtilsTest method testSemanticDomainType.

@Test
public void testSemanticDomainType() throws Exception {
    final SemanticType semanticType = new SemanticType();
    semanticType.increment(new CategoryFrequency(SemanticCategoryEnum.AIRPORT.getId(), SemanticCategoryEnum.AIRPORT.getId()), 1);
    assertThat(TypeUtils.getDomainLabel(SemanticCategoryEnum.AIRPORT.getId()), is(SemanticCategoryEnum.AIRPORT.getDisplayName()));
}

Example 3 with SemanticType

use of org.talend.dataquality.semantic.statistics.SemanticType 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));
}