Worked on maintaining and improving the SharifiZarchi/Introduction_to_Machine_Learning repository, focusing on the accuracy of course materials. Addressed a mathematical notation issue in the Linear Regression slides by correcting the summation index in the LaTeX source, ensuring the cost function formula properly sums over all data points. Applied technical writing and documentation skills to validate the consistency of these changes throughout the slide deck, aligning the material with standard linear regression practices. Maintained clear version control practices with detailed commit messages, supporting traceability and repository integrity. The work emphasized precision in LaTeX and careful attention to educational content quality.