Name: Transformer-Based Reranking: Bringing semantic intelligence to E-commerce
Start: 2026-05-28T11:15:00+0200
End: 2026-05-28T11:45:00+0200

Transformer-Based Reranking: Bringing semantic intelligence to E-commerce

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Thursday May 28, 2026 11:15 - 11:45 CEST

🤖 DATA/AI ARENA

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Offering the right product in the right place: the Holy Grail of e-commerce. Yet, in a catalog of millions of items, a bestseller can become "noise" if it appears out of context. While popularity has long dominated ranking systems, it has now hit a glass ceiling. How do we move from purely statistical sorting to more intelligent navigation?

Within the AAAI team at ADEO, we reached a radical conclusion: behavioral signals (clicks, sales) modeled by classic ML are no longer enough. They are semantically blind. The result? A category can become flooded with accessories or unrelated products simply because they are cheaper and highly clicked, ultimately breaking the browsing experience.

In this session, we will take you behind the scenes of our hybrid ranking architecture. We will detail how we integrated the power of Transformers into the heart of our engine to re-inject context where algorithms were once "deaf" to the meaning of words.

On the Agenda:
The End of "Click Dictatorship": Why behavioral ML alone creates harmful popularity bias.

Semantic AI in Action: How we use Transformers to map user navigation intent to catalog reality.

Hybrid Architecture: Making the precision of a Cross-Encoder coexist with the scalability of a ranking model (like XGBoost).

Results & Lessons Learned: Real gains measured in ranking quality, limitations encountered, and takeaways from deploying on a massive scale.

Techniques covered: Python, ZenML, Transformer Models, Statistics, NDCG, ML

Target Audience: Data Scientists, ML Engineers, Product Owners

Level: Intermediate

Speakers

Alex Lenfant

Data Scientist, Ext - ADEO Services

Alex LENFANT – Data Scientist
A former flight test engineer in the aerospace industry turned AI enthusiast, Alex traded Airbus cockpits for ranking algorithms. While he no longer lands planes, he now ensures that your browsing in the "Drills" category doesn't go into a tails... Read More →

Thursday May 28, 2026 11:15 - 11:45 CEST
🤖 DATA/AI ARENA 135 Rue Sadi Carnot, Ronchin, France

Data / AI, Talk

Audience Intermediate

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Alex Lenfant

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Dev Summit 2026

Alex Lenfant

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