secretflow/spu
Apr 2025 – Jan 2026
8 Months active
Languages Used
PythonC++JAXMLIRBazel
Technical Skills
Bug FixingPython DevelopmentBuild Systems (Bazel)C++Data PrivacyJAX
周金金
PROFILE
周金金
Jinjin Zhou contributed to the secretflow/spu repository by developing privacy-preserving data aggregation and analytics features, including private groupby sum and average, and enhancing sorting capabilities with radix sort and stable sorting options. Zhou’s work involved C++ and Python, focusing on kernel development, algorithm design, and performance optimization to ensure reliable, reproducible analytics in secure multi-party computation workflows. By decoupling the SML library for modularity, upgrading JAX/Flax dependencies, and improving build systems with Bazel, Zhou addressed both maintainability and stability. The engineering approach emphasized robust testing, deterministic outputs, and efficient data processing, demonstrating depth in both system design and implementation.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
9Total
Bugs
2
Commits
9
Features
6
Lines of code
36,149
Activity Months8
Your Network
144 peopleWork History
January 2026
2 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for secretflow/spu focusing on sorting improvements that enhance reliability and determinism in client data pipelines. Delivered features include radix sort support for signed and unsigned data and an is_stable parameter to enable stable sorting, providing predictable results and better reproducibility in downstream analytics. The work was implemented through two commits associated with PRs #1367 and #1383, enabling a clean API upgrade with clear contributor messages.
2 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for secretflow/spu focusing on sorting improvements that enhance reliability and determinism in client data pipelines. Delivered features include radix sort support for signed and unsigned data and an is_stable parameter to enable stable sorting, providing predictable results and better reproducibility in downstream analytics. The work was implemented through two commits associated with PRs #1367 and #1383, enabling a clean API upgrade with clear contributor messages.
January 2026
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 Monthly Summary – Secretflow SPU: Delivered privacy-preserving aggregation enhancements with significant performance improvements and new functionality. Highlights include Private GroupBy: performance improvements and AVG aggregation; efficiency gains with reduced overhead and two-mode AVG support; repository: secretflow/spu. Impact: faster private analytics, improved scalability, and groundwork for broader privacy-preserving analytics.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 Monthly Summary – Secretflow SPU: Delivered privacy-preserving aggregation enhancements with significant performance improvements and new functionality. Highlights include Private GroupBy: performance improvements and AVG aggregation; efficiency gains with reduced overhead and two-mode AVG support; repository: secretflow/spu. Impact: faster private analytics, improved scalability, and groundwork for broader privacy-preserving analytics.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for the SPU project focused on delivering a privacy-preserving data aggregation capability. Delivered the private groupby sum functionality for the SPU kernel by introducing new C++ sources and headers for group-by aggregation, implementing the private groupby sum logic, and adding tests. Updated build configuration and prot_wrapper to integrate the new functionality, enabling seamless usage in downstream workflows. Commit reference: 6c0b158173c0c5861356d4682d1844336e56f5cd.
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for the SPU project focused on delivering a privacy-preserving data aggregation capability. Delivered the private groupby sum functionality for the SPU kernel by introducing new C++ sources and headers for group-by aggregation, implementing the private groupby sum logic, and adding tests. Updated build configuration and prot_wrapper to integrate the new functionality, enabling seamless usage in downstream workflows. Commit reference: 6c0b158173c0c5861356d4682d1844336e56f5cd.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for secretflow/spu focusing on key accomplishments, stability, and business value.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for secretflow/spu focusing on key accomplishments, stability, and business value.
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for secretflow/spu focusing on modularity and maintainability improvements through SML library decoupling and standalone migration. No major bugs fixed this month. The work reduces SPU code coupling, simplifies tests, and paves the way for independent SML development.
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for secretflow/spu focusing on modularity and maintainability improvements through SML library decoupling and standalone migration. No major bugs fixed this month. The work reduces SPU code coupling, simplifies tests, and paves the way for independent SML development.
August 2025
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary focusing on the SPU repo: secretflow/spu. This period centered on improving the reliability and reproducibility of the SML K-Means algorithm, with targeted fixes that align SML results with scikit-learn benchmarks and ensure deterministic experiment setups for easier validation and auditing.
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary focusing on the SPU repo: secretflow/spu. This period centered on improving the reliability and reproducibility of the SML K-Means algorithm, with targeted fixes that align SML results with scikit-learn benchmarks and ensure deterministic experiment setups for easier validation and auditing.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for secretflow/spu focusing on key accomplishments and business impact. Delivered the SML reveal feature that enables plaintext access to SPU computations with early-stopping integration, including usage examples for conditional logic and loops, and integrated this capability into the logistic regression workflow to support early stopping. Concurrently refactored build dependencies and dataset loading utilities to improve build reliability and developer experience.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for secretflow/spu focusing on key accomplishments and business impact. Delivered the SML reveal feature that enables plaintext access to SPU computations with early-stopping integration, including usage examples for conditional logic and loops, and integrated this capability into the logistic regression workflow to support early stopping. Concurrently refactored build dependencies and dataset loading utilities to improve build reliability and developer experience.
May 2025
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for secretflow/spu: Delivered a critical bug fix for the Stax NN example by correcting the import path for the models module, eliminating ModuleNotFoundError and enabling the stax_nn script to locate and load model definitions and run as intended.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for secretflow/spu: Delivered a critical bug fix for the Stax NN example by correcting the import path for the models module, eliminating ModuleNotFoundError and enabling the stax_nn script to locate and load model definitions and run as intended.
Activity
Loading activity data...
Quality Metrics
Correctness90.0%
Maintainability85.6%
Architecture86.6%
Performance83.4%
AI Usage37.8%
Skills & Technologies
Programming Languages
BazelC++JAXMLIRPython
Technical Skills
Bug FixingBuild Systems (Bazel)C++C++ developmentC++ programmingClusteringCode RefactoringData PrivacyData ScienceDependency ManagementJAXKernel DevelopmentMLIRMachine LearningModularization
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline