Aleksandra is a PhD student in Data Science at Sapienza University. Her interests include Natural Language Processing and Information Retrieval. Aside from the PhD, she currently works as a research engineer at Cohere, specializing in retrieval augmentation for large language models. Before that he was a member of the science team at HuggingFace. Previously, Aleksandra worked at the Facebook AI Research lab in London, where she carried out research into knowledge-intensive NLP. Before that, she worked on reducing the spread of misinformation on the Facebook platform and on Facebook Search.