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Backports the following commits to 8.17:

* Refactor change point detection (#114289)

* Move change detection code to separate class

* Uniformize ChangeDetector and SkipeAndDipDetector

* Separate ChangeDetectorTests and ChangePointAggregatorTests.

* Public entrypoint for change point detection

* Move p-value computation to ChangeDetector

* Move main entrypoint to a separate file

* Fix change point detection for uncertain non-stationary distributions. (#119578)

* Fix change point detection for uncertain non-stationary distributions.

* Replace -1 by ChangeType.NO_CHANGE_POINT
@jan-elastic jan-elastic added :ml Machine learning auto-merge-without-approval Automatically merge pull request when CI checks pass (NB doesn't wait for reviews!) backport Team:ML Meta label for the ML team labels Jan 7, 2025
@elasticsearchmachine elasticsearchmachine merged commit 9d2eed1 into elastic:8.17 Jan 7, 2025
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@jan-elastic jan-elastic deleted the backport/8.17/pr-119638 branch January 7, 2025 15:09
sarog pushed a commit to portsbuild/elasticsearch that referenced this pull request Jan 22, 2025
* Refactor change point detection (elastic#114289)

* Move change detection code to separate class

* Uniformize ChangeDetector and SkipeAndDipDetector

* Separate ChangeDetectorTests and ChangePointAggregatorTests.

* Public entrypoint for change point detection

* Move p-value computation to ChangeDetector

* Move main entrypoint to a separate file

* Fix change point detection for uncertain non-stationary distributions. (elastic#119578)

* Fix change point detection for uncertain non-stationary distributions.

* Replace -1 by ChangeType.NO_CHANGE_POINT
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