Quantum-enhanced fraud detection, measured

Credit-card fraud detection sits under a hard constraint: extreme class imbalance, a sub-300 ms decision budget, and a false-decline cost that rivals the fraud itself. The challenge asks whether quantum or quantum-inspired methods can beat tuned classical baselines on the IEEE-CIS and European Cardholder datasets.

Our thesis: before claiming a quantum improvement, you must show your experiment can measure one — so we built and validated the instrument first.

What v0 is

v0 is not "the quantum part is missing". v0 is a classical baseline with a measured measurement system: frozen control limits, a stated capability ratio, and a published table of how many refits a given effect size requires.

That is what makes every later quantum claim checkable rather than asserted. The measurement page is where that argument is made.