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Configure threshold values for cleansing and matching - Data Quality Services (DQS)

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Applies to: SQL Server

This topic describes how to configure threshold values that will be used during the computer-assisted cleansing and matching activities in Data Quality Services (DQS).

Before You Begin

Security

Permissions

You must have the dqs_administrator role on the DQS_MAIN database to configure these threshold values.

Configuring the Threshold Values

  1. Start Data Quality Client. For information about doing so, see Run the Data Quality Client Application.

  2. In the Data Quality Client home screen, click Configuration.

  3. Next, click the General Settings tab. This tab enables you to specify threshold values for cleansing as well as matching activities.

  4. To specify threshold values for the cleansing activity, specify appropriate values in the following boxes under the Interactive Cleansing area:

    • Min score for suggestions: The minimum score or the confidence level that will be used by DQS for suggesting replacements for a value during the computer-assisted cleansing process. Enter a value in the decimal notation of the corresponding percentage value. For example, type 0.75 for 75%. This value should be less than or equal to the value specified in the Min score for auto corrections box. The default value is 0.7.

    • Min score for auto corrections: The minimum score or the confidence level that will be used by DQS for automatically correcting a value during the computer-assisted cleansing process. Enter a value in the decimal notation of the corresponding percentage value. For example, enter 0.9 for 90%. The default value is 0.8.

  5. To specify threshold value for the matching activity, specify a value in the Min record score box under the Matching area. This value signifies the minimum score for a record to be considered as a match for another record. The default value is 80%.

  6. Click Close.