Artificial intelligence represents a
revolution comparable to agriculture and settlement, to the invention of writing or even of the
printing press. These turning points transformed how we interact with the world. Today, AI touches
every human activity.
To be honest, I'm still not sure what intelligence really is. In
practice, I think we can say that artificial intelligence is a scientific discipline that lets
machines accomplish tasks from examples rather than from instructions.
deraison.ai · October 2026 · Warith Harchaoui
Gide's sentence, "art is born of constraint, lives on struggle, dies of freedom," carried into enterprise AI. The three Us are the sieve that separates a system that lasts from a demo that shines once. Agents only sharpen it.
✒️ 🎯 Read the articlederaison.ai · September 2026 · Warith Harchaoui
Four plain-language questions put to a company database: a number, a prediction, a forecast, a chart. The language model writes the query, the database answers and the error becomes visible again. txt2sql, txt2sql2ml with TabICL, txt2sql2viz with sprezzature.ai.
✒️ ⚖️ Read the articlederaison.ai · September 2026 · Warith Harchaoui
The Ralph loop extends the while loop to questions no machine can settle: a readable chart, a fluent text, an honest forecast. An independent judge, a budget of tries and a written reason at every turn: that is what makes it hold.
✒️ 👁️ Read the articlederaison.ai · September 2026 · Warith Harchaoui
elbow-helper detects the elbows of diminishing-returns curves, with quantified uncertainty. When the evidence is missing, it abstains. Bootstrap, BIC, null-model test: the full mathematics.
✒️ 📐 Read the articlederaison.ai · September 2026 · Warith Harchaoui
Standpoint reads a comparison table (options as rows, criteria as columns) and draws a positioning map, axes named in the table's own language. One command does it, everything runs on your machine.
✒️ 🗺️ Read the articlederaison.ai · September 2026 · Warith Harchaoui
A QR code on the last slide, the contact card lands in the audience's phones and a private page counts the scans. Why and how I built qr4prez.
✒️ 📱 Read the articlederaison.ai · August 2026 · Warith Harchaoui
Why the deraison.ai logo begins in a 1659 algebra treatise, from Johann Heinrich Rahn's ÷ sign to AI's vector representations.
✒️ ➗ Read the articlederaison.ai · Warith Harchaoui, Mohamed Chelali, Matias Tassano and Pierre-Louis Antonsanti
A basic cheat sheet for programming in machine learning (statistical learning, pattern recognition, AI or data science), covering applications from computer vision to audio and language processing.
✒️ 💻 Technical Tips ↗deraison.ai · Warith Harchaoui and Laurent Pantanacce
A small palette settled once and for all, every shade copied with one click. Three tables map a color to an emotion, to a concept and to what psychology says about it, all downloadable as CSV. Two variants: the corporate one and the academic one built on the Okabe-Ito palette, readable by people whose color vision differs.
✒️ 🎨 Palette ↗Stanislas, 2021 · Warith Harchaoui
On March 2, 2021, my friend Quentin and I visited your preparatory class at Stanislas in Paris to thank you, on behalf of many alumni, for teaching us the “satisfaction mark”. […]
✒️ ❤️ Inspirational TeacherThink Tank 4ᵉ Révolution, 2021 · Warith Harchaoui and Laurent Pantanacce
Each industrial revolution is driven by a key force (raw material, energy source or creative technology) that redefines the economy. This fourth revolution is unique because its “commodity” is abstract: data. […]
✒️ 🧐 White Paper ↗Rennes School of Business, 2021-2025 · Warith Harchaoui
Bridging the gap between AI technologists and team leaders: this course helps business leaders understand AI's strategic aspects and how to implement it, reconciling science and business for corporate success.
✒️ 👨🏫 Executive MBA ↗Electric Dreams, 2020 · Olivier Frigara, Luc Julia and Warith Harchaoui
Luc Julia, co-creator of Siri, revisits his creation and discusses why Apple's voice assistant still struggles to mature. A world AI expert questioning its real impact on our future: should we trust the tech giants' grand promises? Should we be afraid? Let's debate!
✒️ 📺 ORLM ↗Université Paris Descartes, École 42, 2020 · Warith Harchaoui
Starting from a single neuron, to one-layer networks, then multi-layer (including convolutional architectures and adversarial networks), we explore aspects of intelligence emerging through a technology revolutionizing nearly every domain of our world.
✒️ 🧑🏫 Conference ↗Annotated library · Warith Harchaoui
In a fast-evolving field flooded with publications, a curated list of books I find remarkable, with brief comments, for readers eager to embark on the exciting AI journey.
✒️ 📚 BooksPublications reviewed by scientific peers.
Journal of the Royal Statistical Society (RSS), 2024 · Thi Thanh Yen Nguyen, Warith Harchaoui, Lucile Mégret, Cloe Mendoza, Olivier Bouaziz, Christian Neri and Antoine Chambaz
We developed methods to geometrically link two point sets when those points should correspond. Our case study focuses on mRNA in genetics to understand Huntington's disease.
🗞️ 🧬 Article ↗Neural Information Processing Systems (NeurIPS), 2023 · Louis Ohl, Pierre-Alexandre Mattei, Charles Bouveyron, Warith Harchaoui, Mickaël Leclercq, Arnaud Droit and Frederic Precioso
Clustering groups similar objects together: customers, genes, fruits or animals. GEMINI leverages artificial neural networks in novel ways for large-scale clustering tasks. NeurIPS is the top (or second-top) conference in AI according to Google Scholar.
🗞️ ♊️ Article ↗Ph.D. in Applied Mathematics, 2020 · Warith Harchaoui (supervised by Prof. Charles Bouveyron and Dr. Stéphane Raux)
From 2016 to 2020, this doctoral work focused on three key areas: large-scale clustering, feature importance without manual labels and confidence estimation for automated decisions. Its originality lies in combining optimal transport, neural networks and emerging generative AI.
🗞️ 🎓 Ph.D. Defense ↗A few recordings
