@sepdek's

The first reproducible result in a computer-vision project should often be a dataset audit, not a training curve. If the same physical object appears in both training and test images, a model can look impressive while answering a much easier question than the one we intended. This is especially relevant for heritage collections, where one […]

My July 2025 introduction to SVDA focused on understanding attention. Here I want to explore a practical question: once we can inspect a model’s internal directions, how do we decide which ones to keep—and how do we check that an implementation change does what we intended? Research context Our paper, Prescriptive SVD-Inspired Attention via Spectral […]

A digital twin can organize geometry, measurements and knowledge about an asset. A system that also promises to predict future conditions or compare interventions makes additional commitments. It needs a model of change, a way to update that model from evidence, and an account of uncertainty. Calling the system a world model is useful only […]

Two training runs can have identical current parameters and still take different next steps. That is not mysterious if their optimizer states differ. It becomes easy to overlook when we inspect only the weights or the current prediction. The question worth asking is therefore precise: what state are we observing, what history are we controlling, […]

A representation can look similar at two endpoints while behaving differently along the path between them. To see why, imagine carrying a direction through a sequence of local coordinate changes. Returning to the starting location does not, by itself, tell us whether the carried direction has returned to its original orientation. Holonomy gives a language […]

A point selected on a 3D surface is a geometric location. An annotation saying “possible repair” is an interpretation. Linking the two requires more than saving a screen coordinate, because the viewer can move, the mesh can change and the interpretation can later be revised. A useful annotation system should preserve both the selected region […]

Suppose a collection contains a small set of confirmed matches and thousands of items nobody has checked. Treating every unchecked item as a non-match gives us a convenient training table—but some of its labels will be invented. This is the starting point of positive–unlabelled learning. We know that certain examples are positive. For the others, […]

A sensor installation can produce a very large dataset and still fail to answer a conservation question. The missing step is often the link between the damage mechanism we care about and the quantity the device actually observes. Before choosing a product, I would write down that link. Research context Our paper Sensor-Driven Preventive Preservation […]

A detailed model can show where a crack was photographed. To support a conservation decision, we also need to know when the image was taken, what else was measured, which interpretation was proposed, and who reviewed it. Those relationships do not emerge automatically from a mesh or a textured surface. A useful first step is […]

⚡ Maximum Charging Speed at a Summer Home: A Practical Setup To achieve maximum EV charging speed at a summer home equipped with a standard single-phase 8 kVA power supply and a portable charger, the only practical and safe option is to use a blue, industrial-type 32A socket and a compatible charger. This type of […]

Geometry Meets Attention: Understanding SVDA from the Ground Up Based on our newly (2025) published IEEE Access paper: Geometry Meets Attention: Interpretable Transformers via SVD Inspiration Self-attention is the engine behind modern Transformers, but standard dot-product attention is a black box. Why does a model attend to certain tokens? Can we understand what dimensions matter […]

I’m pleased to share the release of my first short story, The Kingdom of Mirrors — now available as a paperback on Amazon. The book was written at a time when power did not yield to weakness – but to bluff. When a single loud figure moved, and nations built on principles watched, spoke, and […]