Louis Arts
MSc Data Science & Machine Learning · UCL
About
Studying for an MSc in Data Science and Machine Learning at UCL, focused on NLP and computer vision. Previously: an MSc in Astrophysics at Imperial College London, then NLP work at LemonAI, an AI startup in London. Driven to build genuinely useful models.
News
- Jun 2026 Started a new position as Research Intern at Chattermill, working on LLM-in-the-loop text clustering algorithms.
- Jun 2026 Submitted research on cross-lingual factual recall in large language models to EMNLP 2026. Paper currently under review.
- Dec 2025 Published an article on Medium on my passion project: building a mobile eye-tracking system from scratch, training a three-branch CNN on 1.5M+ frames to achieve sub-centimetre gaze accuracy.
- Sep 2025 Began the MSc in Data Science and Machine Learning at University College London.
- Oct 2023 Graduated with an MSc in Physics (Astrophysics) from Imperial College London, completing a research thesis on galaxy simulations for objects observed by the James Webb Space Telescope.
Projects
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Cross-Lingual Factual Recall via Reinforcement Learning
Benchmarked cross-lingual factual recall across 100K Wikidata facts and 12 languages; led mechanistic interpretability analysis identifying language-specific MLP neurons and showing GRPO training shifts processing to deeper, more general layers.
arXiv GitHub -
End-to-End Mobile Eye-Tracking System
Three-branch CNN trained on 1.5M+ augmented frames with custom data preprocessing, achieving 1.4 cm MAE on a held-out test set and deployed as a real-time mobile prototype.
GitHub -
Real-Time Facial Emotion Recognition
Transfer learning on DenseNet169 with data augmentation, achieving 81% test accuracy on a class-balanced dataset of 40K+ labelled images. Presented at Le Wagon Demo Day.
GitHub
