Kweku Abraham

activity

20182021

most citedMultiple Testing in Nonparametric Hidden Markov Models: An Empirical Bayes Approach

9 citations · 9 across the 1 of their papers we have counts for

collaborators

3 papers

math.ST2021★ 9 cited

Multiple Testing in Nonparametric Hidden Markov Models: An Empirical Bayes Approach

Kweku Abraham, Ismael Castillo, Elisabeth Gassiat

Given a nonparametric Hidden Markov Model (HMM) with two states, the question of constructing efficient multiple testing procedures is considered, treating one of the states as an…

math.ST2019

On statistical Calderón problems

Kweku Abraham, Richard Nickl

For $D$ a bounded domain in $R^{d}, d \geq 2,$ with smooth boundary $\partial D$ , the non-linear inverse problem of recovering the unknown conductivity $γ$ determining solutio…

math.ST2018

Nonparametric Bayesian posterior contraction rates for scalar diffusions with high-frequency data

Kweku Abraham

We consider inference in the scalar diffusion model $d X_{t} = b (X_{t}) d t + σ (X_{t}) d W_{t}$ with discrete data $(X_{j Δ_{n}})_{0 \leq j \leq n}$ , $n \to \infty, Δ_{n} \to 0$ and periodic coefficients.…