Internship - Data Scientist (F/H) - April 2025 - 6 months

Le poste

Join us at LVMH, the world leader in luxury goods, where over 75 exceptional Maisons produce high-quality products across five major luxury sectors: Wines & Spirits, Fashion & Leather Goods, Perfumes & Cosmetics, Watches & Jewelry, and Selective Retailing. With over 213,000 employees globally and revenues of 86.2 billion euros in 2023, LVMH offers a dynamic environment for growth and innovation

.
As part of the LVMH House team, your mission will be to design and develop Learning, Innovation, and Transformation solutions to address Business, Leadership, and New Ways of Working challenges. Join our international team and contribute to strategic projects in the field of Learning & Developmen

t.
Internship Title: Reinforcement Learning from Human Feedback on Large Language Models and Autonomous Age

nts
The LVMH Data Science department, a global leader in luxury, develops Artificial Intelligence algorithms for the Group’s Maisons. As a pioneer in the luxury sector, LVMH is committed to delivering an exceptional client experience, where AI plays an increasingly significant role in personalization, efficiency, and innovation. The "Human-Centered AI" approach is critical to ensuring that developed technologies respect human values and enhance client interactions. Integrating human perspectives into these systems ensures that AI amplifies human skills rather than replacing t

hem.
Within this framework, Reinforcement Learning from Human Feedback (RLHF) is a key focus area. Methods such as DPO (Direct Preference Optimization) have already been explored to align our models' behavior with human expectations and va

lues.
LVMH now aims to push this further by improving Large Language Model (LLM) pipelines, particularly Chain-of-Thought (CoT) and Retrieval-Augmented Generation (RAG), as well as Autonomous Agents, using human feedback. A key challenge involves leveraging global feedback on overall generated results and reassigning relevant information to optimize the models. This requires applying advanced RL techniques to effectively connect feedback with precise adjust

ments.
Refe

• rences:Direct Preference Optimization: Your Language Model is Secretly a Rewar
• d ModelTraining language models to follow instructions with human f
• eedbackExploring Large Language Model based Intelligent Agents: Definitions, Methods, and Pr
• ospectsOn the Impact of Fine-Tuning on Chain-of-Thought Re
• asoningUnderstanding the planning of LLM agents: A
• surveyAgent Q: Advanced Reasoning and Learning for Autonomous AI
• AgentsARES: Alternating Reinforcement Learning and Supervised Fine-Tuning for Enhanced Multi-Modal Chain-of-Thought Reasoning Through Diverse AI F
• eedbackMulti-turn Reinforcement Learning from Preference Human F

eedback
Les

missions
Join the LVMH Data Science team to deepen your expertise in Artificial Intelligence applied to the luxury sector. Your responsibilities will

• include:Researching the state-of-the-art scientific and technological advancements in RLHF, CoT, RAG, and LLM pipelines applied to autonomou
• s agents.Developing and experimenting with innovative approaches to enhance these methods using human
• feedback.Designing advanced RL techniques to efficiently map global feedback to specific model adj
• ustments.Testing and evaluating solutions in complex scenarios, such as multi-turn dialogues or retrieval-augmented generati
• on tasks.Communicating your findings and contributing to scientific publications or internal prese

ntations.
What You W

• ill Learn:Master advanced Machine Learning methods and contribute your in
• novations.Understand the strategic and technological challenges associated with AI industri
• alization.Explore unique challenges in the luxury sector and their connect

ion to AI.
V

• otre profil
  Master’s degree specializing in Machine Learning or Artificial I
• ntelligence.Research or final-year
• internship.Strong skills in applied mathematics (optimization, linear algebra, p
• robability).Proficiency in programming (Python, PyTorch/Tensor
• Flow, etc.).Ability to communicate complex topics and excellent written and verbal communication skills in French

and English.
Informations co

mplémentaires
Restaurant tickets, 75% public transport reimbursement, discount rates at the gym, free electric bikes available, integr

ation seminar.The internship offer is available from April 2025, for a period of 6 months and is based

in Paris 8ème.
LVMH recruits and recogniz