Selin Hadjilar

Computer Science at UCL

Work by Selin Hadjilar

• SQL Analysis of a Brazilian E-Commerce Dataset

  I analysed about 96,000 delivered orders from the Olist Brazilian e-commerce dataset in PostgreSQL, answering six business questions: revenue growth, regional concentration, late deliveries and reviews, payment methods, repeat customers and spend concentration. I did it to practise writing SQL that…

• Predicting Enzyme Class from Protein Sequence

  I built a classifier that predicts whether a protein is an enzyme, and which of the six main enzyme classes it belongs to, from its amino acid sequence alone. I used frozen ESM-2 embeddings with a Logistic Regression and XGBoost ensemble on 39,678 sequences, where 81.5% were non-enzymes. Because…

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