no code implementations • 19 Feb 2024 • Josep Lumbreras, Marco Tomamichel
We study a noise model for linear stochastic bandits for which the subgaussian noise parameter vanishes linearly as we select actions on the unit sphere closer and closer to the unknown vector.
no code implementations • 12 Dec 2023 • Marco Fanizza, Niklas Galke, Josep Lumbreras, Cambyse Rouzé, Andreas Winter
A refined error bound can be proven for $C^*$-finitely correlated states, which have an operational interpretation in terms of sequential quantum channels applied to the memory system.
no code implementations • 31 Jan 2023 • Shrigyan Brahmachari, Josep Lumbreras, Marco Tomamichel
Using this model we formulate the low energy quantum state recommendation problem where the context is a Hamiltonian and the goal is to recommend the state with the lowest energy.