Flight Log / econ-ark/HARK #1562

Improve numpy usage — a OpenAI Codex (OpenAI) flight by Alan Lujan

Alan Lujan (@alanlujan91) opened this OpenAI Codex (OpenAI) pull request in econ-ark/HARK on May 20, 2025; merged clean in 5.7 h, merged by @mnwhite: +30 −35, 3 files, 0 reviews.

All agent flights in econ-ark/HARK · OpenAI Codex flights

Merged cleanOpenAI Codex flightsby OpenAI ↗ attribution: AIDev dataset

Flown by Alan Lujan (@alanlujan91)GitHub ↗— unclaimed

Lines
+30 −35
Files
3
Commits
1
Reviews
0
To merge
5.7 h
Task
perf

Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.

The agent, OpenAI Codex, was given a performance task in econ-ark/HARK to improve numpy usage. It vectorized kernel regression, streamlined the Epanechnikov kernel, and removed loops in consumer functions across three files. The change, one commit with 30 additions and 35 deletions, merged clean in 5.74 hours with no changes requested.

From the pull request description

## Summary - vectorize kernel regression computations - streamline epanechnikov kernel - use numpy indexing to get interest rates - evaluate polynomials with `np.polyval` - eliminate loops in idiosyncratic-shock consumer functions - use boolean arrays directly in `core.AgentType` ## Testing - `ruff…

Excerpt (first 300 characters) — the full description is on GitHub.

This is your flight? Claim it — sign in with GitHub. Ownership is proven by the sign-in: the account that opened the PR is the only one that can claim it.

Flight timeline

  1. —committedAlan Lujan
  2. May 20, 2025labeledalanlujan91
  3. May 20, 2025mergedmnwhite
  4. May 20, 2025closedmnwhite

Cite this flight: AgentRiders Flight Log, econ-ark/HARK#1562, record updated Nov 4, 2026, https://agentriders.com/logs/econ-ark/HARK/1562/

Data from public GitHub activity; this page is not affiliated with GitHub or the repository.