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Haifeng Jin

PROFILE

Haifeng Jin

Worked on maintaining and improving machine learning library stability across two major repositories. In google-ai-edge/ai-edge-torch, addressed PyTorch 2.6 compatibility by updating quantizer utilities, removing private imports, and redefining necessary components locally to ensure quantization workflows remained stable during framework upgrades. In jax-ml/jax, restored export path reliability by reverting MLIR integration, removing related references, and adjusting export behavior to prevent regressions and maintain user workflow compatibility. Focused on Python development, library updates, and quantization, the work emphasized careful change management and risk mitigation, prioritizing maintainability and reliability over new feature development during the two-month period.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

2Total
Bugs
2
Commits
2
Features
0
Lines of code
190
Activity Months2

Your Network

5037 people

Work History

April 2026

1 Commits

Apr 1, 2026

April 2026: Restored stability of the export path in jax by reverting MLIR integration, removing MLIR references, and adjusting export behavior to restore compatibility and stability. The revert was executed to prevent export regressions and preserve existing user workflows, with the change captured in the associated commit.

January 2025

1 Commits

Jan 1, 2025

January 2025: Maintained edge quantization workflow stability by delivering PyTorch 2.6 compatibility updates for pt2e quantizer utils in google-ai-edge/ai-edge-torch. Removed unused private imports from torch.ao.quantization.pt2e.utils and locally redefined them to preserve functionality after the PyTorch 2.6 upgrade. Resulted in no regressions in the quantization path, reduced upgrade risk for edge deployments, and reinforced maintainability of the codebase.

Activity

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Quality Metrics

Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage30.0%

Skills & Technologies

Programming Languages

Python

Technical Skills

Library DevelopmentLibrary UpdatesMachine LearningPyTorchPython DevelopmentQuantization

Repositories Contributed To

2 repos

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

google-ai-edge/ai-edge-torch

Jan 2025 Jan 2025
1 Month active

Languages Used

Python

Technical Skills

Library UpdatesPyTorchQuantization

jax-ml/jax

Apr 2026 Apr 2026
1 Month active

Languages Used

Python

Technical Skills

Library DevelopmentMachine LearningPython Development