12 citations · 20 across the 3 of their papers we have counts for
3 papers
Quantum contextual bandits and recommender systems for quantum data
Shrigyan Brahmachari, Josep Lumbreras, Marco Tomamichel
We study a recommender system for quantum data using the linear contextual bandit framework. In each round, a learner receives an observable (the context) and has to recommend from…
Quantum theory in finite dimension cannot explain every general process with finite memory
Marco Fanizza, Josep Lumbreras, Andreas Winter
Arguably, the largest class of stochastic processes generated by means of a finite memory consists of those that are sequences of observations produced by sequential measurements i…
Multi-armed quantum bandits: Exploration versus exploitation when learning properties of quantum states
Josep Lumbreras, Erkka Haapasalo, Marco Tomamichel
We initiate the study of tradeoffs between exploration and exploitation in online learning of properties of quantum states. Given sequential oracle access to an unknown quantum sta…