Persistence component settings
Persistence is the ability for a given dimension value to attribute to a metric beyond the event it is set on. It uses a combination of allocation and expiration.
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Allocation lets you determine which value to keep when more than one dimension item can persist at a time in a single column.
NOTEIf you have a non-default attribution model set on a metric in a report, the attribution model ignores the allocation you set on the dimension for the same report.However, when doing a full table export that includes multiple dimensions, attribution retains the allocation models applied to each dimension. -
Expiration lets you determine how long a dimension item persists beyond the event it is set on.
Persistence is available only on dimensions, and is retroactive to the data it is applied to. It is an immediate data transformation that happens before segmenting or other analysis operations are applied.
| Setting | Description |
|---|---|
| Set persistence | Enable persistence for the dimension. If persistence is not enabled, the dimension only relates to metrics that exist in the same event. This setting is disabled by default. |
| Allocation |
Lets you specify the allocation model used on a dimension for persistence. Options are:
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| Expiration |
Lets you specify the persistence window for a dimension. Options are:
. You might need to be able to expire the dimension on a purchase (such as internal search terms or other merchandising use cases). The maximum expiration time you can set is 90 days. If you select an allocation of All, only Session or Person expiration is available. |
Allocation settings
Details around the available allocation settings.
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Most Recent: persists the most recent (by timestamp) value present in the dimension. Any subsequent values that occur within the dimension’s expiration period replaces the previously persisting value. If “Treat ‘No Value’ as a value” is enabled on this dimension under No value options, empty values overwrite previously persisted values. For example, consider the following table with Most recent allocation and Session expiration:
Dimension Hit 1 Hit 2 Hit 3 Hit 4 Hit 5 Dataset values C B A Most recent allocation C B B A -
Original: Persists the original value by timestamp present within the dimension for the duration of the expiration period. If this dimension has a value, it is not overwritten when a different value is seen on a subsequent event. For example, consider the following table with Original allocation and Session expiration:
Dimension Hit 1 Hit 2 Hit 3 Hit 4 Hit 5 Dataset values C B A Original allocation C C C C -
All: Acts similarly to the Participation attribution model for metrics. Persists all values equally so each get full credit for the metric in reporting. For example, consider the following table with All allocation and Session expiration:
Dimension Hit 1 Hit 2 Hit 3 Hit 4 Hit 5 Dataset values A B C A All allocation A A,B A,B,C A,B,C A,B,C -
First Known and Last Known: (Jan 19, 2022 ) These two allocation models satisfy “entry” and “exit” dimension use cases. They take the first or last observed value for a dimension within a specified persistence scope (session, person, or custom time period with lookback) and apply it to all events within the specified scope. Example:
Dimension Hit 1 Hit 2 Hit 3 Hit 4 Hit 5 Timestamp (min) 1 2 3 6 7 Original values C B A First known C C C C C Last known A A A A A
Expiration settings
Details around the available expiration settings.
- Session: Expires after a given session. Default expiration window.
- Person Reporting Window: Expires at the end of the reporting window.
- Global Account Reporting Window B2B Edition: Expires at the end of the reporting window.
- Account Reporting Window B2B Edition: Expires at the end of the reporting window.
- Opportunity Reporting Window B2B Edition: Expires at the end of the reporting window.
- Buying Group Reporting Window B2B Edition: Expires at the end of the reporting window.
- Custom Time: Expires after a specified time period (up to 90 days). This expiration option is only available for Original and Most Recent allocation models. When using time-based expiration, values previous to the start of your reporting window (up to 90 days) are considered.
- Metric: When this metric is seen in a event, immediately expire the persisted value in the dimension. You can use any metric as the expiration end for this dimension. This expiration option is only available for Original and Most Recent allocation settings.
