60 citations · 290 across the 33 of their papers we have counts for
5 papers · 2 filters
Efficient Estimation of the Central Mean Subspace via Smoothed Gradient Outer Products
Gan Yuan, Mingyue Xu, Samory Kpotufe +1
We consider the problem of sufficient dimension reduction (SDR) for multi-index models. The estimators of the central mean subspace in prior works either have slow (non-parametric)…
Nonlinear Meta-Learning Can Guarantee Faster Rates
Dimitri Meunier, Zhu Li, Arthur Gretton +1
Many recent theoretical works on \emph{meta-learning} aim to achieve guarantees in leveraging similar representational structures from related tasks towards simplifying a target ta…
Tracking Most Significant Shifts in Nonparametric Contextual Bandits
Joe Suk, Samory Kpotufe
We study nonparametric contextual bandits where Lipschitz mean reward functions may change over time. We first establish the minimax dynamic regret rate in this less understood set…
Classification Tree Pruning Under Covariate Shift
Nicholas Galbraith, Samory Kpotufe
We consider the problem of \emph{pruning} a classification tree, that is, selecting a suitable subtree that balances bias and variance, in common situations with inhomogeneous trai…
Limits of Model Selection under Transfer Learning
Steve Hanneke, Samory Kpotufe, Yasaman Mahdaviyeh
Theoretical studies on transfer learning or domain adaptation have so far focused on situations with a known hypothesis class or model; however in practice, some amount of model se…