Zeynep Su Selcuk focused on improving code quality in the RNO-G/mattak repository by refactoring the dataset.py module. She identified and removed a redundant initialization of the _lowTrigThrs variable, which was previously assigned None before being overwritten by a new array. This targeted change, implemented in Python, enhanced code readability and maintainability without altering existing functionality or test outcomes. By addressing this technical debt, Zeynep supported future feature development and simplified onboarding for new contributors. Her disciplined approach to code hygiene and refactoring demonstrated a strong understanding of maintainable software practices and effective use of Python for codebase improvements.