[Autoloop: perf-comparison] by github-actions[bot] · Pull Request #435 · githubnext/tsb

github-actions · 2026-07-23T13:33:08Z

🤖 This PR is maintained by Autoloop. Each accepted iteration adds a commit to this branch.

Autoloop: perf-comparison

Goal: Benchmark every tsb function vs pandas equivalent.

Current Best Metric: 756 benchmarked function pairs

Program Issue: #221

Latest Iteration (418)

Added firstValidIndex / lastValidIndex benchmarks:

TypeScript: benchmarks/tsb/bench_first_last_valid_index.ts — 100k-row Series with NaN at start, end, and scattered; 500 measured iterations
Python: benchmarks/pandas/bench_first_last_valid_index.py — matching dataset and loop structure using Series.first_valid_index() / Series.last_valid_index()

Metric: 755 → 756 (+1)

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Generated by Autoloop · 1.4K AIC · ⌖ 12.1 AIC · ⊞ 51.8K · ◷
_{Comment /autoloop to run again}

…ndex benchmark Run: https://github.com/githubnext/tsb/actions/runs/30010910150 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Benchmark BooleanArray extension array (100k elements, ~10% nulls, 50 iters): from/any/all/sum/and/or/not/fillna. TS: arrays.BooleanArray from tsb; Python: pd.array(dtype='boolean'). Run: https://github.com/githubnext/tsb/actions/runs/30058807058 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-24T01:30:55Z

Commit pushed: 402ebd6

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Run: https://github.com/githubnext/tsb/actions/runs/30096576504 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-24T13:36:13Z

Commit pushed: 8d70dac

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github-actions · 2026-07-24T13:36:15Z

🤖 Iteration 420 — ✅ Accepted

Change: Added StringArray extension array benchmarks (bench_string_array.ts / bench_string_array.py)
Metric: 758 (best: 758, delta: +1)
Commit: 8d70dac
Result: Benchmarks cover from/upper/lower/strip/contains/len/fillna on 100k-element arrays with ~10% nulls (50 measured iterations). Python uses pd.array(dtype="string") with equivalent .str accessor methods.

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Add bench_datetime_array.ts and bench_datetime_array.py benchmarking nullable datetime extension array: from/year/month/day/isna/notna/fillna. 100k elements with ~10% nulls, 50 iterations. Run: https://github.com/githubnext/tsb/actions/runs/30138360760 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-25T01:30:38Z

Commit pushed: 7500ea9

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Add bench_timedelta_array.ts and bench_timedelta_array.py benchmarks for TimedeltaArray (100k elements, ~10% nulls, 50 iters): from/days/hours/ totalSeconds/isna/notna/sum/min/max/fillna. Run: https://github.com/githubnext/tsb/actions/runs/30159549081 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-25T13:32:49Z

Commit pushed: 744e7b2

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Add matched TypeScript + Python benchmarks for Gaussian KDE (evaluate + integrate) on a bimodal 10k-point dataset with 200 evaluation points, 20 iterations. Run: https://github.com/githubnext/tsb/actions/runs/30182788398 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-26T01:49:54Z

Commit pushed: dfda6b1

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Run: https://github.com/githubnext/tsb/actions/runs/30203838065 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-26T13:29:05Z

Commit pushed: 66c5b82

Generated by Autoloop · 678.6 AIC · ⌖ 11.6 AIC · ⊞ 51.8K

…tropy/jsDivergence/jsDistance/crossEntropy benchmark Run: https://github.com/githubnext/tsb/actions/runs/30248425219 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-27T08:17:27Z

Commit pushed: 6fdb111

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…alEntropy/variationOfInformation benchmark 1000-element paired observations, 10 categories, 50 iters each. Python: pure-numpy implementations matching tsb semantics. Run: https://github.com/githubnext/tsb/actions/runs/30297867311 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-27T19:36:53Z

Commit pushed: 320e47d

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Benchmarks fixed-bin cut and quantile-based qcut on 100k-row data. Run: https://github.com/githubnext/tsb/actions/runs/31573572340 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-12T07:33:14Z

Commit pushed: 47467e8

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…ark — custom aggregation function (p75, range) via resample().agg(fn) Run: https://github.com/githubnext/tsb/actions/runs/31631782373 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-12T19:41:57Z

Commit pushed: ff2a1b7

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Add bench_style.ts and bench_style.py for DataFrame Styler API: highlightMax, highlightMin, format, backgroundGradient → toHtml(). 200-row DataFrame, 50 measured iterations. Run: https://github.com/githubnext/tsb/actions/runs/31677401936 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-13T07:37:54Z

Commit pushed: 2fbbf0a

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Add linregress + OLS regression benchmark (tsb vs pandas/numpy). Benchmarks simple linear regression and multiple OLS on 10k-row dataset. Run: https://github.com/githubnext/tsb/actions/runs/31734998176 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-13T19:27:58Z

Commit pushed: b70653a

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…ansform, transform, inverseTransform) Add PCA transform benchmark pair: - benchmarks/tsb/bench_pca_transform.ts: PCA.fitTransform, result.transform, result.inverseTransform - benchmarks/pandas/bench_pca_transform.py: numpy SVD equivalent Dataset: N=1000, P=10, n_components=5, WARMUP=5, ITERATIONS=30 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-14T07:46:33Z

Commit pushed: 9e0b94f

Generated by Autoloop · 7.3K AIC · ⌖ 11.9 AIC · ⊞ 51.8K

Add benchmark pair for str.title() titlecase conversion on 100k strings. tsb: Series.str.title() | pandas: Series.str.title() Run: https://github.com/githubnext/tsb/actions/runs/31804160800 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-14T13:42:07Z

Commit pushed: 98dcf89

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…ction benchmark Benchmark mergeAsof with direction="forward" (smallest right key >= left key). Only the default backward direction was previously covered. Run: https://github.com/githubnext/tsb/actions/runs/31856202878 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-15T01:47:09Z

Commit pushed: d19f908

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…read_fwf Run: https://github.com/githubnext/tsb/actions/runs/31886321783 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-15T13:26:18Z

Commit pushed: 80d2324

Generated by Autoloop · 1.7K AIC · ⌖ 12.1 AIC · ⊞ 51.8K

…arterEnd/Begin, BMonthEnd/Begin, BYearEnd/Begin apply/rollforward/rollback on 5k dates Run: https://github.com/githubnext/tsb/actions/runs/31919325615 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-16T01:36:42Z

Commit pushed: 6b5ab0b

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…/dataFrameAbs/seriesRound/dataFrameRound on 100k-row dataset Run: https://github.com/githubnext/tsb/actions/runs/31948913632 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-08-16T13:21:30Z

Commit pushed: ed7dc53

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[Autoloop: perf-comparison] Iteration 418: firstValidIndex/lastValidI…

2e09d0e

…ndex benchmark Run: https://github.com/githubnext/tsb/actions/runs/30010910150 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions Bot added autoloop automation labels Jul 23, 2026

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[Autoloop: perf-comparison] Iteration 420: StringArray benchmark

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Run: https://github.com/githubnext/tsb/actions/runs/30096576504 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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github-actions Bot mentioned this pull request Jul 24, 2026

[Autoloop] [Autoloop: perf-comparison] #221

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[Autoloop: perf-comparison] Iteration 424: add mode benchmark

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Run: https://github.com/githubnext/tsb/actions/runs/30203838065 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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[Autoloop: perf-comparison] Iteration 425: add renyiEntropy/tsallisEn…

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…tropy/jsDivergence/jsDistance/crossEntropy benchmark Run: https://github.com/githubnext/tsb/actions/runs/30248425219 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions Bot and others added 2 commits July 27, 2026 08:17

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[Autoloop: perf-comparison] Iteration 456: Add cut/qcut benchmark

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Benchmarks fixed-bin cut and quantile-based qcut on 100k-row data. Run: https://github.com/githubnext/tsb/actions/runs/31573572340 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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[Autoloop: perf-comparison] Iteration 457: Add resample_agg_fn benchm…

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…ark — custom aggregation function (p75, range) via resample().agg(fn) Run: https://github.com/githubnext/tsb/actions/runs/31631782373 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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[Autoloop: perf-comparison] Iteration 463: bench_fwf — readFwf vs pd.…

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…read_fwf Run: https://github.com/githubnext/tsb/actions/runs/31886321783 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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[Autoloop: perf-comparison] Iteration 465: bench_elem_ops — seriesAbs…

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…/dataFrameAbs/seriesRound/dataFrameRound on 100k-row dataset Run: https://github.com/githubnext/tsb/actions/runs/31948913632 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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