26 from daal.algorithms
import pca
27 from daal.data_management
import FileDataSource, DataSourceIface
29 utils_folder = os.path.realpath(os.path.abspath(os.path.dirname(os.path.dirname(__file__))))
30 if utils_folder
not in sys.path:
31 sys.path.insert(0, utils_folder)
32 from utils
import printNumericTable
34 DAAL_PREFIX = os.path.join(
'..',
'data')
38 dataFileName = os.path.join(DAAL_PREFIX,
'online',
'pca_normalized.csv')
40 if __name__ ==
"__main__":
43 dataSource = FileDataSource(
44 dataFileName, DataSourceIface.doAllocateNumericTable,
45 DataSourceIface.doDictionaryFromContext
49 algorithm = pca.Online(fptype=np.float64)
51 while(dataSource.loadDataBlock(nVectorsInBlock) == nVectorsInBlock):
53 algorithm.input.setDataset(pca.data, dataSource.getNumericTable())
58 result = algorithm.finalizeCompute()
61 printNumericTable(result.get(pca.eigenvalues),
"Eigenvalues:")
62 printNumericTable(result.get(pca.eigenvectors),
"Eigenvectors:")