CombiRWTH/StaffScheduling
May 2025 – Jun 2025
2 Months active
Languages Used
Python
Technical Skills
Algorithm DesignAlgorithm DevelopmentAlgorithm OptimizationBackend DevelopmentConstraint ProgrammingImport Management
Yinghao Wang
PROFILE
Yinghao Wang
Worked on the CombiRWTH/StaffScheduling repository to enhance shift scheduling by implementing robust constraint programming solutions in Python. Developed and optimized algorithms to improve night-shift feasibility, enforce rest requirements, and refine rotation and weekend rest logic, addressing edge cases such as 24-hour no-shift periods after night shifts and preventing late-to-early transitions. Refactored import management and clarified constraint documentation to support maintainability and onboarding. Further refined the scheduling objective by penalizing consecutive workdays and rewarding weekend rest, while simplifying the model by removing over-optimizing constraints. This work resulted in a more reliable, maintainable, and balanced staff scheduling system.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
12Total
Bugs
1
Commits
12
Features
2
Lines of code
617
Activity Months2
Your Network
10 peopleShared Repositories
10
Philipp LentzenMember
HenrietteMember
Henriette ThierMember
J0R0WMember
Julian GiesenMember
KarlKindermannMember
iramisuMember
paulgillesMember
Linda TemmeMember
Work History
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for CombiRWTH/StaffScheduling: Implemented targeted enhancements to the scheduling objective and fixed edge cases to improve rest/work balance alignment and algorithm simplicity. Key changes include penalizing consecutive work days and rewarding rest days with a weekend emphasis, and removing the 'more_free_days_for_night_worker' constraint to avoid over-optimizing night worker rest days. These changes were implemented via two commits: fix free days near weekends and safe remove more free days for night workers. Result: clearer objective, reduced risk of misallocated night rest, and a more maintainable optimization model.
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for CombiRWTH/StaffScheduling: Implemented targeted enhancements to the scheduling objective and fixed edge cases to improve rest/work balance alignment and algorithm simplicity. Key changes include penalizing consecutive work days and rewarding rest days with a weekend emphasis, and removing the 'more_free_days_for_night_worker' constraint to avoid over-optimizing night worker rest days. These changes were implemented via two commits: fix free days near weekends and safe remove more free days for night workers. Result: clearer objective, reduced risk of misallocated night rest, and a more maintainable optimization model.
June 2025
May 2025
10 Commits • 1 Features
May 1, 2025May 2025: Focused on delivering robust shift-constraint features for CombiRWTH/StaffScheduling, improving night-shift feasibility, rest requirements, rotation, and weekend rest. This work also included import-path corrections and clearer constraint descriptions for StateManager. Key deliverables included new and refined constraints, stabilization of edge cases (e.g., 24h no-shift after night shift, no late-to-early transitions), and documentation enhancements. Result: more compliant, reliable scheduling, reduced fatigue risk, and better maintainability across the codebase.
May 2025
10 Commits • 1 Features
May 1, 2025May 2025: Focused on delivering robust shift-constraint features for CombiRWTH/StaffScheduling, improving night-shift feasibility, rest requirements, rotation, and weekend rest. This work also included import-path corrections and clearer constraint descriptions for StateManager. Key deliverables included new and refined constraints, stabilization of edge cases (e.g., 24h no-shift after night shift, no late-to-early transitions), and documentation enhancements. Result: more compliant, reliable scheduling, reduced fatigue risk, and better maintainability across the codebase.
Activity
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Quality Metrics
Correctness81.6%
Maintainability86.6%
Architecture80.0%
Performance75.0%
AI Usage21.6%
Skills & Technologies
Programming Languages
Python
Technical Skills
Algorithm DesignAlgorithm DevelopmentAlgorithm OptimizationBackend DevelopmentConstraint ProgrammingImport ManagementPythonSoftware DevelopmentSoftware DocumentationSoftware Refactoring
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