Prof. Alessandro Bianchi Associate Professor of Computer Science Department of Computer Science and Engineering University of Bologna alessandro.bianchi@example.edu 15 March 2013 Admissions Committee PhD Programme in Data Science Subject: Recommendation letter for Mr. Mario Rossi Dear Members of the Admissions Committee, I am pleased to recommend Mr. Mario Rossi for admission to your PhD programme in Data Science. I met Mr. Rossi during his Master’s studies in Computer Science and Engineering, where I taught the course “Machine Learning and Data Mining” and later supervised him during his thesis work. His thesis, titled “Scalable Methods for Predictive Analytics on Large-Scale Web Data”, addressed a topic of clear relevance at the time, combining machine learning, statistical modelling, and large-scale data processing. My opinion of Mr. Rossi is based on his performance in coursework, his participation in laboratory activities, and several technical discussions during the development of his thesis. Across these contexts, he showed strong analytical ability, intellectual discipline, and an unusual capacity to connect theoretical material with implementation choices. From a technical perspective, Mr. Rossi has solid foundations in algorithms, probability, statistics, machine learning, and database systems. He is comfortable with programming and experimental evaluation, and he showed particular strength in designing reproducible computational experiments. During his thesis work, he implemented data preprocessing pipelines, trained predictive models, and evaluated them using appropriate validation procedures. He was also careful in discussing the limitations of his results rather than overstating them, which I consider an important quality for doctoral research. Mr. Rossi also demonstrated relevant soft skills. He works independently, manages deadlines reliably, and communicates technical ideas with clarity. In group laboratory sessions, he was constructive and precise, often helping colleagues debug implementation issues without taking over their work. He is not merely diligent; he is methodical, critical, and capable of sustained work on open-ended problems. In my assessment, Mr. Rossi has the academic maturity required for doctoral study in Data Science. His background in machine learning, software systems, and data management gives him a suitable basis for research involving modern data-intensive methods. I believe he would contribute positively to a PhD cohort and would be able to develop into an independent researcher. I therefore recommend Mr. Mario Rossi for admission to your PhD programme in Data Science. Sincerely, Prof. Alessandro Bianchi Associate Professor of Computer Science Department of Computer Science and Engineering University of Bologna