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To define a second match rule, put your cursor on the top right corner of
the Matching Key table, click the [+] button to create a new rule.
When you define multiple conditions in the match rule editor, an OR match
operation is conducted on the analyzed data. Records are evaluated against
the first rule and the records that match are not evaluated against the
second rule and so on.
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Click at the top right corner of the Matching Key or
Match and Survivor section and replace the default name of
the rule with a name of your choice.
If you define more than one rule in the match analysis, you can use the up and
down arrows in the dialog box to change the rule order and thus decide what rule to
execute first.
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Click OK.
The rules are named and ordered accordingly in the section.
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In the Match threshold field, enter the
match probability threshold.
Two data records match when the probability is above this value.
In the Confident match threshold field,
set a numerical value between the current Match
threshold and 1.
If the GRP-QUALITY calculated by the
match analysis is equal to or greater than the Confident match threshold, you can be confident about the
quality of the group.
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Click Chart to compute the groups
according to the blocking key and match rule you defined in the editor and
display the results of the sample data in a chart.
This chart shows a global picture about the duplicates in the analyzed
data. The Hide groups less than parameter
is set to 2 by default. This parameter enables you to
decide what groups to show in the chart, you usually want to hide groups of
small group size.
The chart in the above image indicates that out of the 1000 sample records
you examined and after excluding items that are unique, by having the
Hide groups less than parameter set to
2:
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49 groups have 2 items each. In each group, the 2 items are
duplicates of each other.
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7 groups have 3 duplicate items and the last group has 4 duplicate
items.
Also, the Data table indicates the match
details of items in each group and colors the groups in accordance with
their colors in the match chart.