Instant BQML Version Changelog

Version 8 [2024-05-03]
- Add session_id to GA4 measurement protocol payload to associate GA4 event with session source / medium in GA4 UI.
- Set +2 microseconds for Instant Vertex pipelines to avoid collisions with Instant BQML pipelines to refresh audience logic.

Version 7 [2024-04-01]
- Remove automatic conversion event creation from Event Propensity pipeline. This change aims to reduce confusion for users who are not using VBB. However, this feature is still available and can be turned on if needed for VBB-related tasks.

Version 5 [2023-11-21]
- Refined wildcard query logic to target 'events_20*' prefix, reducing the inclusion of views and enhancing query specificity.
- Updated all date format specifiers in BigQuery queries from %Y (four-digit year) to %y (two-digit year) to align with the revised wildcard filter logic, ensuring accurate table selection and data querying consistency.
- Implemented the boosted tree regressor algorithm for BigQuery Machine Learning models. Hyperparameters have been optimized, including setting BOOSTER_TYPE to DART and adjusting SUBSAMPLE to 0.7 for improved generalizability.

Version 4 [2023-11-07]
- Remove session_id and engagement_time_msec from GA4 measurement protocol payload.
- Remove session_id calculations from Calculate Fields query.

Version 3 [2023-10-24]
- Updated the Event & Churn propensity training, prediction, and value-based bidding logic to include a regular expression filter. This filter omits events with names ending in '_iBQML' or '_vertex', which are associated with propensity score calculations, ensuring they are not included in the analysis.
- Set data split method to `AUTO_SPLIT` in BigQuery ML training query hyperparameters.

Version 2 [2023-08-07]
- Updated audience boundaries job to define boundaries based on AUDIENCE_SEGMENTS variable, not user counts.

Version 1 [2023-06-27]
- Create Version Changelog to manage pipeline upgrades.
- Remove conversion event creation from non-Event Propensity marketing objectives.