powsybl/powsybl-core - Open Source PR Review Scorecard

A framework to build power system oriented software

C-Rank Grade: A (Welcoming) - 61/100

External PR Merge Rate: 50%

Response Time: -

First Timer Success: 57%

Frequently Asked Questions

Is powsybl/powsybl-core welcoming to first-time open-source contributors?

powsybl/powsybl-core has a recorded first-timer success rate of 57.1%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.

How fast can I expect code review feedback on my pull request?

Maintainers in powsybl/powsybl-core respond to incoming external pull requests in approximately 0.0 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.

What does the 61.0 C-Rank™ score (A Tier) represent?

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 61.0 places powsybl/powsybl-core in the A tier.

What is the external contributor pull request merge rate for powsybl/powsybl-core?

The external contributor pull request merge rate for powsybl/powsybl-core is 50.4%, based on public PR activity from non-core contributors.

Are there Good First Issues available in powsybl/powsybl-core?

powsybl/powsybl-core currently has 2 active issue(s) tagged with beginner-friendly labels like "good first issue", "beginner", or "up-for-grabs".

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powsybl/powsybl-coreA•Welcoming190
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powsybl/powsybl-core

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InactiveA•Welcoming(61/100)Java

A framework to build power system oriented software

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AI Maintainer Review Guidelines

Review Persona

High-Friction Gatekeeper

Warmth Score
5.0/10
Patience Score
6.0/10
Nitpick Rate
65%

Rigorous architecture standards (100% critical review signals). Ensure PRs strictly follow guidelines before requesting review in powsybl/powsybl-core.

Top PR Submission Do's

  • •Add unit tests with >80% coverage for modified code paths
  • •Use conventional commit messages and clean branch names
  • •Link relevant GitHub issue ID in PR description pre-flight checklist

Top PR Friction Pitfalls (Don'ts)

  • •Do not submit unlinked PRs without referencing an existing issue
  • •Do not mix refactoring and feature logic into a single commit
  • •Do not ping maintainers repeatedly within 24 hours of opening
Response Velocity
-
No reviewer activity recorded

Average Response Latency

Tracks hours until a maintainer leaves a review, comment, or PR response.

Merge Efficiency
50.4%
Moderate PR acceptance rate

External Acceptance Rate

Percentage of community pull requests successfully merged into main.

First-Timer Success
57.1%
Strong first-timer PR acceptance rate

First PR Conversion

Rate at which developers submitting their first repository PR succeed.

Active Maintainers
32 core
Highly collaborative maintainer core
Diagnostic Health HUD
50.4%
Merge Gauge
57.1%
1st-Timer
Community Vibe37/100

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GetMerged C-Rank badge for powsybl/powsybl-core
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Active Good First Issues (2)

View on GitHub

Describe the current behavior Javadoc and signature of the function: /** * Get a list of temporary limits ordered by descending duration. * @return a list of temporary limits ordered by descending duration */ Collection<TemporaryLimit> getTemporaryLimits(); Describe the expected behavior Javadoc and signature of the function: /** * Get a list of temporary limits ordered by descending duration. * @return a list of temporary limits ordered by descending duration */ List<TemporaryLimit> getTemporaryLimits(); Describe the motivation The javadoc is inconsistent with the actual return type of the function. Our current implementations also guarantee that the limits are ordered by descending duration (as written in the contract of the function). However, there is no ordering relation on a Collection, so this guarantee disappears. Moreover, if we want to get the temporary limit with the highest duration, we need to do getTemporaryLimits().iterator().next() which isn't great (compared to j

📅 Opened Sep 11, 2026💬 2 comments
Quality: 50/100Contribute

Describe the current behavior split() works for some chunk size but fails for others when chunks are not successive. Example chunk1: offset = 0, values = [1, 2, 3] chunk2: offset = 6, values = [7, 8] # timeSeries timeSeries (chunk1, chunk2): [1d, 2d, 3d, NaN, NaN, NaN, 7d, 8d] split(2) works and returns non successive chunks: offset = 0, values = [1, 2] offset = 2, values = [3] offset = 6, values = [7, 8] These chunks are not successive: after offset 2 with size 1, the next expected offset should be 3, not 6. split(3) works also. but split(4) fails with: java.lang.IllegalArgumentException: Chunks are not successive. First offset is 0 and first size is 3; second offset should be 3but is 6 Describe the expected behavior The behavior should be consistent. Either: non successive chunks are supported, and split() should work for all valid split sizes, or non successive chunks are not supported, and split() should fail consistently. Describe the steps Create a time series with two

📅 Opened Jun 5, 2026💬 9 comments
Quality: 45/100Contribute
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Contributor Compatibility & Review Speed Analysis for powsybl/powsybl-core

When evaluating whether to contribute to powsybl/powsybl-core, 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 powsybl/powsybl-core acknowledge new external contributions in approximately -. Out of all submitted pull requests from non-core authors in the last 180-day window, 50.4% were successfully merged into the primary branch.

Frequently Asked Questions - Contributing to powsybl/powsybl-core

01

Is powsybl/powsybl-core welcoming to first-time open-source contributors?

powsybl/powsybl-core has a recorded first-timer success rate of 57.1%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.

02

How fast can I expect code review feedback on my pull request?

The initial maintainer response time averages ~-. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.

03

What does the 61.0 C-Rank™ score represent?

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 61.0 places powsybl/powsybl-core in the Welcoming tier.

04

What is the external contributor pull request merge rate for powsybl/powsybl-core?

The external pull request merge rate is 50.4%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.

05

Are there beginner Good First Issues open in powsybl/powsybl-core?

Yes, powsybl/powsybl-core currently has 2 active issue(s) tagged with beginner-friendly labels. You can inspect these directly from the repository issues tab.

GetMerged C-Rank™ Indexing Standard

All metrics displayed for powsybl/powsybl-core 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.