Jij-Inc/ommx
Feb 2025 – Dec 2025
5 Months active
Languages Used
Jupyter NotebookPythonYAMLRust
Technical Skills
Adapter DesignCI/CDDocumentationLinear ProgrammingMixed-Integer ProgrammingPython Development
Iago Almeida
PROFILE
Iago Almeida
I. Almeida contributed to the Jij-Inc/ommx repository by developing and refining SDK features and adapters for mathematical optimization workflows. Over five months, Almeida implemented Python and Rust solutions to enable broader solver support, such as HiGHS and HUBO, and introduced abstractions like SolverAdapter to align APIs across packages. Their work included backend enhancements for decision variable filtering, improved objective reporting for maximization problems, and robust log encoding to prevent data duplication. Through careful algorithm design, unit testing, and CI/CD integration, Almeida delivered features that improved problem formulation clarity, cross-adapter consistency, and the reliability of optimization pipelines for downstream users.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
9Total
Bugs
2
Commits
9
Features
4
Lines of code
1,881
Activity Months5
Your Network
10 peopleSame Organization
@j-ij.com1
Work History
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for Jij-Inc/ommx: Hardened the log encoding path to prevent duplicate variable creation by constraining processing to used_decision_variables. Delivered a targeted bug fix with commit b3126fd2a1a4fe2c3c41eff2283073fa76222881, addressing edge-case issues when log_encode is called multiple times. Impact includes increased reliability of the logging/encoding workflow, reduced risk of data duplication, and easier maintenance of the encoding module.
1 Commits
Dec 1, 2025December 2025 monthly summary for Jij-Inc/ommx: Hardened the log encoding path to prevent duplicate variable creation by constraining processing to used_decision_variables. Delivered a targeted bug fix with commit b3126fd2a1a4fe2c3c41eff2283073fa76222881, addressing edge-case issues when log_encode is called multiple times. Impact includes increased reliability of the logging/encoding workflow, reduced risk of data duplication, and easier maintenance of the encoding module.
December 2025
August 2025
1 Commits
Aug 1, 2025August 2025 — Focused on stabilizing optimizer correctness in Jij-Inc/ommx. Implemented and shipped a bug fix for the OpenJij adapter that corrected object function signs for maximization problems. This ensures objective values reported after conversion from minimization are positive and accurate, reducing misinterpretation of results and improving downstream decision making.
August 2025
1 Commits
Aug 1, 2025August 2025 — Focused on stabilizing optimizer correctness in Jij-Inc/ommx. Implemented and shipped a bug fix for the OpenJij adapter that corrected object function signs for maximization problems. This ensures objective values reported after conversion from minimization are positive and accurate, reducing misinterpretation of results and improving downstream decision making.
July 2025
1 Commits • 1 Features
Jul 1, 20252025-07 monthly summary for Jij-Inc/ommx: Delivered a new Python SDK feature to expose used_decision_variables in the Instance class, with supporting tests and cross-adapter consistency updates. These changes enable a filtered view of decision variables that actually influence the objective and remaining constraints, improving problem formulation clarity and computational efficiency. The work is reflected across multiple adapters and includes tests for partial evaluation and constraint relaxation, enhancing reliability for model builders and downstream integrations.
1 Commits • 1 Features
Jul 1, 20252025-07 monthly summary for Jij-Inc/ommx: Delivered a new Python SDK feature to expose used_decision_variables in the Instance class, with supporting tests and cross-adapter consistency updates. These changes enable a filtered view of decision variables that actually influence the objective and remaining constraints, improving problem formulation clarity and computational efficiency. The work is reflected across multiple adapters and includes tests for partial evaluation and constraint relaxation, enhancing reliability for model builders and downstream integrations.
July 2025
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025: Delivered HUBO support for problem conversion and adapter integration in Jij-Inc/ommx. Implemented to_hubo conversion in the Instance class and extended OpenJijSAAdapter to handle HUBO instances and prepare sampler input; added tests for HUBO scenarios. This enables higher-order optimization workflows, expands problem representation capabilities, and improves end-to-end solution readiness for related pipelines.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025: Delivered HUBO support for problem conversion and adapter integration in Jij-Inc/ommx. Implemented to_hubo conversion in the Instance class and extended OpenJijSAAdapter to handle HUBO instances and prepare sampler input; added tests for HUBO scenarios. This enables higher-order optimization workflows, expands problem representation capabilities, and improves end-to-end solution readiness for related pipelines.
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Jij-Inc/ommx focusing on business value and technical accomplishments. Delivered major SDK and adapter enhancements, enabling broader solver support and improved API consistency. Strengthened release readiness and version governance while addressing a minor export defect.
4 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Jij-Inc/ommx focusing on business value and technical accomplishments. Delivered major SDK and adapter enhancements, enabling broader solver support and improved API consistency. Strengthened release readiness and version governance while addressing a minor export defect.
February 2025
Activity
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Quality Metrics
Correctness94.4%
Maintainability90.0%
Architecture92.2%
Performance82.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
Jupyter NotebookPythonRustYAML
Technical Skills
Adapter DesignAdapter DevelopmentCI/CDDocumentationLinear ProgrammingMixed-Integer ProgrammingOptimizationProblem SolvingPythonPython DevelopmentQuantum ComputingRelease ManagementRustRust DevelopmentSDK Development
Repositories Contributed To
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