Examples with BitVectorValue org.knime.core.data.vector.bitvector.BitVectorValue used on opensource projects

Example 11 with BitVectorValue

use of org.knime.core.data.vector.bitvector.BitVectorValue in project knime-core by knime.

the class SubgroupMinerModel method preprocess.

private List<BitVectorValue> preprocess(final DataTable inData, final ExecutionMonitor exec) throws CanceledExecutionException {
    // TODO: check in configure that only Double values are in the table
    m_tidRowKeyMapping = new HashMap<Integer, RowKey>();
    m_nrOfRows = 0;
    int totalNrRows = ((BufferedDataTable) inData).getRowCount();
    m_maxBitsetLength = 0;
    List<BitVectorValue> bitSets = new ArrayList<BitVectorValue>();
    int bitVectorIndex = inData.getDataTableSpec().findColumnIndex(m_bitVectorColumn.getStringValue());
    if (bitVectorIndex < 0) {
        return new ArrayList<BitVectorValue>();
    }
    for (RowIterator itr = inData.iterator(); itr.hasNext(); ) {
        exec.checkCanceled();
        DataRow currRow = itr.next();
        DataCell dc = currRow.getCell(bitVectorIndex);
        if (dc.isMissing()) {
            continue;
        }
        BitVectorValue currCell = ((BitVectorValue) currRow.getCell(bitVectorIndex));
        if (currCell.length() > Integer.MAX_VALUE) {
            throw new IllegalArgumentException("bit vector in row " + currRow.getKey().getString() + " is too long: " + currCell.length() + ". Only bit vectors up to " + Integer.MAX_VALUE + " are supported by this node.");
        }
        m_maxBitsetLength = Math.max(m_maxBitsetLength, (int) currCell.length());
        bitSets.add(currCell);
        m_tidRowKeyMapping.put(m_nrOfRows, currRow.getKey());
        m_nrOfRows++;
        exec.setProgress((double) m_nrOfRows / (double) totalNrRows, "preprocessing......." + m_nrOfRows);
    }
    LOGGER.debug("max length: " + m_maxBitsetLength);
    return bitSets;
}

Example 12 with BitVectorValue

use of org.knime.core.data.vector.bitvector.BitVectorValue in project knime-core by knime.

the class SubgroupMinerModel method execute.

/**
 * {@inheritDoc}
 */
@Override
protected BufferedDataTable[] execute(final BufferedDataTable[] inData, final ExecutionContext exec) throws Exception {
    DataTable input = (BufferedDataTable) inData[0];
    ExecutionMonitor exec1 = exec.createSubProgress(0.5);
    ExecutionMonitor exec2 = exec.createSubProgress(0.5);
    List<BitVectorValue> transactions = preprocess(input, exec1);
    m_nameMapping = input.getDataTableSpec().getColumnSpec(m_bitVectorColumn.getStringValue()).getElementNames();
    m_apriori = AprioriAlgorithmFactory.getAprioriAlgorithm(AprioriAlgorithmFactory.AlgorithmDataStructure.valueOf(m_underlyingStruct.getStringValue()), m_maxBitsetLength, m_nrOfRows);
    LOGGER.debug("support: " + m_minSupport);
    LOGGER.debug(m_minSupport + " start apriori: " + new Date());
    m_apriori.findFrequentItemSets(transactions, m_minSupport.getDoubleValue(), m_maxItemSetLength.getIntValue(), FrequentItemSet.Type.valueOf(m_itemSetType.getStringValue()), exec2);
    LOGGER.debug("ended apriori: " + new Date());
    m_itemSetTable = createOutputTable(exec);
    return new BufferedDataTable[] { m_itemSetTable };
}

Example 13 with BitVectorValue

use of org.knime.core.data.vector.bitvector.BitVectorValue in project knime-core by knime.

the class BitVectorNotSetCountOperator method computeInternal.

/**
 * {@inheritDoc}
 */
@Override
protected boolean computeInternal(final DataCell cell) {
    if (cell instanceof BitVectorValue) {
        final BitVectorValue bv = (BitVectorValue) cell;
        m_counter += bv.length() - bv.cardinality();
    }
    return false;
}

Example 14 with BitVectorValue

use of org.knime.core.data.vector.bitvector.BitVectorValue in project knime-core by knime.

the class BitVectorUnionOperator method computeInternal.

/**
 * {@inheritDoc}
 */
@Override
protected boolean computeInternal(final DataCell cell) {
    if (cell instanceof BitVectorValue) {
        BitVectorValue val = (BitVectorValue) cell;
        if (m_v == null) {
            m_v = new DenseBitVectorCellFactory(val.length()).createDataCell();
        }
        m_v = DenseBitVectorCellFactory.or(m_v, val);
    }
    return false;
}

Example 15 with BitVectorValue

use of org.knime.core.data.vector.bitvector.BitVectorValue in project knime-core by knime.

the class BitVectorSetCountOperator method computeInternal.

/**
 * {@inheritDoc}
 */
@Override
protected boolean computeInternal(final DataCell cell) {
    if (cell instanceof BitVectorValue) {
        final BitVectorValue bv = (BitVectorValue) cell;
        m_counter += bv.cardinality();
    }
    return false;
}