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Timeseries split #414

Merged
merged 13 commits into from
Nov 5, 2024
Merged

Timeseries split #414

merged 13 commits into from
Nov 5, 2024

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tnixon
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@tnixon tnixon commented Oct 31, 2024

Changes

Created a sub-class of the PySpark ML CrossValidator
(see https://spark.apache.org/docs/latest/api/python/reference/api/pyspark.ml.tuning.CrossValidator.html#pyspark.ml.tuning.CrossValidator)
that replicates the timeseries split method implemented by SKLearn's TimeSeriesSplit
(see https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.TimeSeriesSplit.html)

Linked issues

Resolves #409

Functionality

  • added relevant user documentation
  • added a new Class method
  • modified existing Class method: ...
  • added a new function
  • modified existing function: ...
  • added a new test
  • modified existing test: ...
  • added a new example
  • modified existing example: ...
  • added a new utility
  • modified existing utility: ...

Tests

I created an example notebook where I use the new Cross-Validator to train a GBT regression model on some sample data. Notebook included as a reference example.

  • manually tested
  • added unit tests
  • added integration tests
  • verified on staging environment (screenshot attached)

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@R7L208 R7L208 left a comment

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The changes look good. Can you add test cases for TimeSeriesCrossValidator @tnixon ?

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tnixon commented Nov 4, 2024

Yeah... I guess that would be a good idea 🙄 😄

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LGTM! Thank you

@R7L208 R7L208 merged commit 8489cc1 into master Nov 5, 2024
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@tnixon tnixon deleted the timeseries_split branch December 4, 2024 20:28
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Time-series split for cross validation not available in Spark ML library
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