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Mathis HAMMEL

PROFILE

Mathis Hammel

Worked on the rapidsai/cugraph repository to enhance the ForceAtlas2 graph layout algorithm by addressing stability issues in the prevent_overlapping mode. Implemented a diminishing speed factor, following the methodology outlined in the ForceAtlas2 paper and Gephi’s reference implementation, to improve convergence and overlap prevention in crowded graph visualizations. This required updates to CUDA kernel functions and adjustments to test parameters, ensuring more reliable and visually stable layouts for analytics workflows. Utilized C++, CUDA, and Python to deliver these improvements, focusing on the quality and reliability of graph algorithms. The work resulted in a targeted bug fix rather than new feature development.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
57
Activity Months1

Work History

October 2025

1 Commits

Oct 1, 2025

October 2025 monthly summary for rapidsai/cugraph: Implemented ForceAtlas2 overlap-prevention stability via a diminishing speed factor, aligning with the ForceAtlas2 paper and Gephi’s approach. This involved updates to kernel functions and test parameters to improve convergence and overlap quality, resulting in more stable and reliable graph layouts.

Activity

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Quality Metrics

Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

C++Python

Technical Skills

C++CUDAGraph AlgorithmsPythonTesting

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

rapidsai/cugraph

Oct 2025 Oct 2025
1 Month active

Languages Used

C++Python

Technical Skills

C++CUDAGraph AlgorithmsPythonTesting