CholeskyBatch.java

/* file: CholeskyBatch.java */
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/*
 //  Content:
 //     Java example of Cholesky decomposition
 */

package com.intel.daal.examples.cholesky;

import com.intel.daal.algorithms.cholesky.*;
import com.intel.daal.data_management.data.NumericTable;
import com.intel.daal.data_management.data_source.DataSource;
import com.intel.daal.data_management.data_source.FileDataSource;
import com.intel.daal.examples.utils.Service;
import com.intel.daal.services.DaalContext;

class CholeskyBatch {
    private static final String dataset   = "../data/batch/cholesky.csv";

    private static DaalContext context = new DaalContext();

    public static void main(String[] args) throws java.io.FileNotFoundException, java.io.IOException {
        FileDataSource dataSource = new FileDataSource(context, dataset,
                DataSource.DictionaryCreationFlag.DoDictionaryFromContext,
                DataSource.NumericTableAllocationFlag.DoAllocateNumericTable);
        dataSource.loadDataBlock();

        /* Create an algorithm */
        Batch choleskyAlgorithm = new Batch(context, Double.class, Method.defaultDense);

        /* Set an input object for the algorithm */
        NumericTable input = dataSource.getNumericTable();
        choleskyAlgorithm.input.set(InputId.data, input);

        /* Compute Cholesky decomposition */
        Result result = choleskyAlgorithm.compute();

        NumericTable choleskyFactor = result.get(ResultId.choleskyFactor);

        Service.printNumericTable("Result of cholesky decomposition:", choleskyFactor);

        context.dispose();
    }
}