When finding similar records, you can edit the attributes and the criteria used to
calculate 'nearness'. Nearness settings are saved with a selection project. When Find
Similar is using settings that are not the default for the dataset, a warning is
displayed.
-
Click Find Similar, and select Nearness
Settings.
By default, only the attributes that are populated for the current
reference record will be shown. To show all available attributes, select
Show all attributes. A warning icon will be shown next to the
attributes that have no data for the reference record. To ensure accurate results,
you should not include any attributes in the nearness calculation which are
unpopulated.
-
Select the attributes to include in the nearness calculation, and choose how to
use those attribute values in your calculation:
| Option | Description |
|---|
| 100% when |
Sets how data values higher or lower than the reference record are
treated in the nearness calculation. There are three options to choose from:
- Identical - Only having the same data value
as a reference record is considered as no difference. Differences
are calculated for values higher or lower than the reference
record.
- Same or higher - Having the same data value
or a higher data value than the reference record is considered as no
difference. Differences are calculated for values lower than the
reference record.
- Same or lower - Having the same data value or
a lower data value than the reference record is considered as no
difference. Differences are calculated for values higher than the
reference record.
|
| Weighting factor |
The relative weighting that is given to an attribute in the nearness
calculation. It must be between 0.01 and 100 (default is 1). |
