SAP HANA Predictive Analysis Library (PAL)

Name Data Type Default Value Description
SHAPE_OF_GRID Integer 2 Indicates the shape of the
grid.
●
●
1: Rectangle
2: Hexagon
RADIUS Double The bigger value of
HEIGHT_OF_MAP and
WIDTH_OF_MAP
Specifies the scan radius.
BATCH_SOM Integer 0 Indicates whether batch
SOM is carried out.
●
●
0: Classical SOM
1: Batch SOM
For batch SOM, KER­
NEL_FUNCTION is always
Gaussian, and the LEARN­
ING_RATE factors take no effect.
Note
The SOMs algorithm has been updated since SAP HANA SPS 12, so the algorithm results may be different
from the results in the previous versions. The default value (1: Gaussian) for the KERNEL_FUNCTION
parameter is not available in SAP HANA SPS 11 or lower, which only supports the bubble neighborhood
function.
Output Tables
Table 75:
Table Column Column Data Type Description Constraint
SOM Map 1st column Integer Unit cell ID. This must be the first
column.
Other columns except
the last one
Double
Weight vectors used to
simulate the original
tuples.
Last column Integer Number of original tuples
that every unit cell
contains.
SOM Assign 1st column Integer, varchar, or
nvarchar
ID of original tuples
This must be the first
column.
106 P U B L I C
SAP HANA Predictive Analysis Library (PAL)
PAL Functions