C++ API Reference for Intel® Data Analytics Acceleration Library 2019

sorting_dense_batch.cpp

/* file: sorting_dense_batch.cpp */
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/*
! Content:
! C++ example of sorting the observations matrix
!******************************************************************************/
#include "daal.h"
#include "service.h"
using namespace daal;
using namespace daal::algorithms;
using namespace daal::data_management;
using namespace std;
/* Input data set parameters */
string datasetFileName = "../data/batch/sorting.csv";
int main(int argc, char *argv[])
{
checkArguments(argc, argv, 1, &datasetFileName);
/* Initialize FileDataSource<CSVFeatureManager> to retrieve the input data from a .csv file */
FileDataSource<CSVFeatureManager> dataSource(datasetFileName, DataSource::doAllocateNumericTable, DataSource::doDictionaryFromContext);
/* Retrieve the data from the input file */
dataSource.loadDataBlock();
/* Create algorithm objects to sort data using the default (radix) method */
sorting::Batch<> algorithm;
/* Print the input observations matrix */
printNumericTable(dataSource.getNumericTable(), "Initial matrix of observations:");
/* Set input objects for the algorithm */
algorithm.input.set(sorting::data, dataSource.getNumericTable());
/* Sort data observations */
algorithm.compute();
/* Get the sorting result */
sorting::ResultPtr res = algorithm.getResult();
printNumericTable(res->get(sorting::sortedData), "Sorted matrix of observations:");
return 0;
}

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