42 citations · 43 across the 4 of their papers we have counts for
5 papers · 1 filter
AdaBoost and robust one-bit compressed sensing
Geoffrey Chinot, Felix Kuchelmeister, Matthias Löffler +1
This paper studies binary classification in robust one-bit compressed sensing with adversarial errors. It is assumed that the model is overparameterized and that the parameter of i…
Spectral thresholding for the estimation of Markov chain transition operators
Matthias Löffler, Antoine Picard
We consider nonparametric estimation of the transition operator of a Markov chain and its transition density where the singular values of are assumed to decay exponenti…
Efficient Estimation of Linear Functionals of Principal Components
Vladimir Koltchinskii, Matthias Löffler, Richard Nickl
We study principal component analysis (PCA) for mean zero i.i.d. Gaussian observations in a separable Hilbert space with unknown covariance operator $…
Constructing confidence sets for the matrix completion problem
Alexandra Carpentier, Olga Klopp, Matthias Löffler
In the present note we consider the problem of constructing honest and adaptive confidence sets for the matrix completion problem. For the Bernoulli model with known variance of th…
Adaptive confidence sets for matrix completion
Alexandra Carpentier, Olga Klopp, Matthias Löffler +1
In the present paper we study the problem of existence of honest and adaptive confidence sets for matrix completion. We consider two statistical models: the trace regression model…