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[FIX] Pooled global/groupby lag transforms to use RANGE semantics #641

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Merged
nasaul merged 20 commits into from
May 23, 2026
Merged

[FIX] Pooled global/groupby lag transforms to use RANGE semantics #641

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3267a2f
Fix pooled global/groupby lag transforms to use RANGE semantics
simonez-tuidi May 8, 2026
ac8e7d3
Document min_samples semantics divergence in pooled mode
simonez-tuidi May 14, 2026
0d6ede4
Warn when validate_data=False with pooled transforms
simonez-tuidi May 14, 2026
54874ba
Add per-timestamp aggregate cache and RollingMean fast path
simonez-tuidi May 14, 2026
95fa716
Add prediction fast path using cached aggregates
simonez-tuidi May 14, 2026
1709aac
Added optimizations: lag_transforms.py: Added _rolling_mean_from_agg(…
simonez-tuidi May 15, 2026
90a8b42
Guard pooled rolling transforms against min_samples=0 empty-window crash
simonez-tuidi May 15, 2026
e262017
Merge branch 'main' into feature/groupby_with_range_semantics
simonez-tuidi May 15, 2026
1cdb31c
Add ExpandingMean and ExponentiallyWeightedMean aggregate-based fast …
simonez-tuidi May 15, 2026
e4785a4
Vectorize groupby prediction mapping with lookup array
simonez-tuidi May 15, 2026
fb6a461
Extend _TimestampAggregates with sum_sq, mins, maxs fields
simonez-tuidi May 15, 2026
ace2983
Fix EWM pooled lag semantics: two-pointer consumption
simonez-tuidi May 18, 2026
63233d9
Add aggregate-based fast paths for RollingStd, RollingMin/Max, Expand…
simonez-tuidi May 18, 2026
143f2ee
Bypass pandas merge for groupby preprocess via permutation array
simonez-tuidi May 18, 2026
a48e8be
Add pooled transform regression tests for lag > 1
simonez-tuidi May 19, 2026
339b883
Add SQLite-based oracle tests for pooled lag transforms
simonez-tuidi May 19, 2026
6281149
Added fix to address gap in the test that failed to cover the actual …
simonez-tuidi May 19, 2026
5ccb574
Refactors to narwhals
nasaul May 22, 2026
8d5210e
Add docs
nasaul May 22, 2026
634550c
Merge branch 'main' into feature/groupby_with_range_semantics
nasaul May 22, 2026
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