Probabilistic Programming and Nested sampling in JAX
C-Rank Grade: A (Welcoming) - 57/100
External PR Merge Rate: 82%
Response Time: 1h
First Timer Success: 100%
Joshuaalbert/jaxns has a recorded first-timer success rate of 100.0%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in Joshuaalbert/jaxns respond to incoming external pull requests in approximately 1.4 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 57.2 places Joshuaalbert/jaxns in the A tier.
The external contributor pull request merge rate for Joshuaalbert/jaxns is 81.8%, based on public PR activity from non-core contributors.
Joshuaalbert/jaxns does not currently have active "good first issue" tags indexed, but accepts external contributions through standard GitHub issue tracking.
Active maintainer team in Joshuaalbert/jaxns welcoming community pull requests and bug fixes.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/Joshuaalbert/jaxns?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
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90% receive response in
Maintainer review activity heatmap & prime window prediction
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Detected: UTC
Maintainers are most responsive around 10:00 UTC (10:00 UTC in your timezone). Recommended submission window is Tuesday - Thursday from 10:00 to 14:00 UTC (10:00 - 14:00 UTC local).
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~4 hours (96% approval). Large PRs (>500 lines) take ~7 hours (37% approval). Keep your diff compact for rapid review.
Hi Joshua, We're using jaxns for nested sampling in a pulsar timing array (PTA) continuous wave gravitational wave search. The likelihood is a Kalman filter implemented in JAX, and evaluates in ~0.02s on GPU after JIT compilation. What works well: With 2 free parameters, jaxns runs end-to-end in ~30 minutes — roughly 25 min JIT compilation and ~3 min actual sampling (130k likelihood evals, 2500 samples, ESS=314). Evidence computation works perfectly. We're using num_live_points=200, s=3, k=0, max_samples=5000. Where we struggle: Our full model has ~107 free parameters. With this dimensionality, jaxns never gets past JIT compilation — we've waited 7.5 hours on a P100 GPU with no progress beyond "Number of Markov-chains set to: 200". We believe the compilation bottleneck is the XLA trace of the full nested sampling loop including our likelihood, not the sampling itself. The likelihood's computation graph is moderately complex (Kalman filter with lax.scan), and we suspect the combinat
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When evaluating whether to contribute to Joshuaalbert/jaxns, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of Joshuaalbert/jaxns acknowledge new external contributions in approximately 1 hours. Out of all submitted pull requests from non-core authors in the last 180-day window, 81.8% were successfully merged into the primary branch.
Joshuaalbert/jaxns has a recorded first-timer success rate of 100.0%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~1 hours. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 57.2 places Joshuaalbert/jaxns in the Welcoming tier.
The external pull request merge rate is 81.8%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
Joshuaalbert/jaxns does not have open beginner labels indexed currently, but external PRs for bugs and documentation improvements are evaluated via normal issue triage.
All metrics displayed for Joshuaalbert/jaxns are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.