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Language models can answer medical questions with surprising accuracy. But do they actually encode medical knowledge in identifiable, interpretable ways? Or is it all just statistical soup? Using Neuronpedia, we ran a simple experiment to find out. W...
When a medical Vision Language Model(VLM) looks at a chest X-ray and says "cardiomegaly present," what's actually happening inside the model? It's a black box. Billions of parameters. Dense activation vectors where every dimension encodes a tangled m...
Off late a lot of my research time is studying why medical models systems fail. Not the obvious failures where the model outputs gibberish, but the subtle ones where the output looks clinically appropriate, follows proper documentation structure, use...
When a doctor examines a chest X-ray and says "I see signs of pneumonia in the lower right lung," you can ask them to point at exactly what they're seeing. They can circle the cloudy region, explain why it looks abnormal, and walk you through their r...
Data does not just appear. Something creates it. A coin flip. A measurement device. A biological process. A human decision. Understanding that something, the mechanism that generates observations, is the key to understanding uncertainty. This mechani...
The Challenge That Ties Everything Together After four modules of learning multimodal techniques, NVIDIA's certification throws you into the deep end with a beautifully designed assessment. The problem sounds almost paradoxical at first: You have a c...
Video Understanding & Graph-RAG: AI That Watches, Remembers, and Reasons This is Part 4 (Final) of a 4-part series based on learnings from NVIDIA's "Building AI Agents with Multimodal Models" certification. The Final Frontier: Understanding Video We...
Part 1: Discrete Random Variables Discrete random variables represent countable outcomes—like the roll of a die, the number of users on a site, or binary classification labels. Expected Value The expected value (or mean) tells us the "center of mass"...
Document Intelligence: Teaching AI to Read, Understand, and Remember PDFs This is Part 3 of a 4-part series based on learnings from NVIDIA's "Building AI Agents with Multimodal Models" certification. The Challenge: Documents Are Messy Think about a ...