basic_statistics.py

Deprecation Notice: With the introduction of daal4py, a package that supersedes PyDAAL, Intel is deprecating PyDAAL and will discontinue support starting with Intel® DAAL 2021 and Intel® Distribution for Python 2021. Until then Intel will continue to provide compatible pyDAAL pip and conda packages for newer releases of Intel DAAL and make it available in open source. However, Intel will not add the new features of Intel DAAL to pyDAAL. Intel recommends developers switch to and use daal4py.

Note: To find daal4py examples, refer to daal4py documentation or browse github repository.

 # file: basic_statistics.py
 #===============================================================================
 # Copyright 2014-2019 Intel Corporation.
 #
 # This software and the related documents are Intel copyrighted  materials,  and
 # your use of  them is  governed by the  express license  under which  they were
 # provided to you (License).  Unless the License provides otherwise, you may not
 # use, modify, copy, publish, distribute,  disclose or transmit this software or
 # the related documents without Intel's prior written permission.
 #
 # This software and the related documents  are provided as  is,  with no express
 # or implied  warranties,  other  than those  that are  expressly stated  in the
 # License.
 #===============================================================================
 
 #
 # !  Content:
 # !    Python example for using of basic statistics
 # !*****************************************************************************
 
 #
 ## <a name = "DAAL-EXAMPLE-PY-BASIC_STATISTICS"></a>
 ## \example basic_statistics.py
 #
 
 import os
 import sys
 import numpy as np
 
 from daal.data_management import HomogenNumericTable, NumericTableIface, FileDataSource, DataSourceIface
 
 utils_folder = os.path.realpath(os.path.abspath(os.path.dirname(os.path.dirname(__file__))))
 if utils_folder not in sys.path:
     sys.path.insert(0, utils_folder)
 from utils import printNumericTable
 
 
 if __name__ == "__main__":
 
     print("Basic statistics example\n")
 
     # Input data set parameters
     datasetFileName = "../data/batch/basic_statistics.csv"
     data = np.array([(7.0, 3.0, 6.0, 2.0),
                      (1.0, 3.0, 0.0, 2.0),
                      (9.0, 2.0, 6.0, 2.0),
                      (3.0, 4.0, 7.0, 2.0),])
 
     # Initialize FileDataSource to retrieve the input data from a .csv file
     dataSource = FileDataSource(datasetFileName, DataSourceIface.doAllocateNumericTable)
 
     dataSource.createDictionaryFromContext()
     dataSource.loadDataBlock()
     table = dataSource.getNumericTable()
 
     # Get basic statistics from the table. They were calculated inside DataSource for each column.
     min = table.basicStatistics.get(NumericTableIface.minimum)
     max = table.basicStatistics.get(NumericTableIface.maximum)
     sum = table.basicStatistics.get(NumericTableIface.sum)
     sumSquares = table.basicStatistics.get(NumericTableIface.sumSquares)
 
     # Print calculated basic statistics
     printNumericTable(table,      "Basic statistics of table:")
     printNumericTable(min,        "Minimum:")
     printNumericTable(max,        "Maximum:")
     printNumericTable(sum,        "Sum:")
     printNumericTable(sumSquares, "SumSquares:")
 
     # Create NumericTable with the same data. But in this case basic statistics are not calculated.
     dataTable = HomogenNumericTable(data)
 
     # Set basic statistics in the new NumericTable
     dataTable.basicStatistics.set(NumericTableIface.minimum, min);
     dataTable.basicStatistics.set(NumericTableIface.maximum, max);
     dataTable.basicStatistics.set(NumericTableIface.sum, sum);
     dataTable.basicStatistics.set(NumericTableIface.sumSquares, sumSquares);
 
     # Print basic statistics those were set
     printNumericTable(dataTable,                                                   "New table:")
     printNumericTable(dataTable.basicStatistics.get(NumericTableIface.minimum),    "Minimum:")
     printNumericTable(dataTable.basicStatistics.get(NumericTableIface.maximum),    "Maximum:")
     printNumericTable(dataTable.basicStatistics.get(NumericTableIface.sum),        "Sum:")
     printNumericTable(dataTable.basicStatistics.get(NumericTableIface.sumSquares), "SumSquares:")
For more complete information about compiler optimizations, see our Optimization Notice.
Select sticky button color: 
Orange (only for download buttons)