Cramér's moderate deviations for martingales with applications

X Fan, QM Shao - Annales de l'Institut Henri Poincare (B) …, 2024 - projecteuclid.org
Let (ξ i, F i) i≥ 1 be a sequence of martingale differences. Set X n=∑ i= 1 n ξ i and⟨ X⟩ n=∑
i= 1 n E (ξ i 2| F i− 1). We prove Cramér's moderate deviation expansions for P (X n/⟨ X⟩ n≥ …

[HTML][HTML] Exact rates of convergence in some martingale central limit theorems

X Fan - Journal of Mathematical Analysis and Applications, 2019 - Elsevier
Abstract Renz [14], Ouchti [13], El Machkouri and Ouchti [3] and Mourrat [12] have
established some tight bounds on the rate of convergence in the central limit theorem for …

[HTML][HTML] Self-normalized Cramér type moderate deviations for stationary sequences and applications

X Fan, I Grama, Q Liu, QM Shao - Stochastic Processes and their …, 2020 - Elsevier
Let (X i) i≥ 1 be a stationary sequence. Denote m=⌊ n α⌋, 0< α< 1, and k=⌊ n∕ m⌋,
where⌊ a⌋ stands for the integer part of a. Set S j∘=∑ i= 1 m X m (j− 1)+ i, 1≤ j≤ k, and (V …

Cram\'{e} r's moderate deviations for martingales with applications

X Fan, QM Shao - arxiv preprint arxiv:2204.02562, 2022 - arxiv.org
Let $(\xi_i,\mathcal {F} _i) _ {i\geq1} $ be a sequence of martingale differences. Set $
X_n=\sum_ {i= 1}^ n\xi_i $ and $\langle X\rangle_n=\sum_ {i= 1}^ n\mathbf {E}(\xi_i …

Uniform Cramér moderate deviations and Berry-Esseen bounds for a supercritical branching process in a random environment

X Fan, H Hu, Q Liu - Frontiers of Mathematics in China, 2020 - Springer
Let Z n, n⩾ 0 be a supercritical branching process in an independent and identically
distributed random environment. We prove Cramér moderate deviations and Berry-Esseen …

Normalized and self-normalized Cramér-type moderate deviations for the Euler-Maruyama scheme for the SDE

X Fan, H Hu, L Xu - Science China Mathematics, 2024 - Springer
In this paper, we establish normalized and self-normalized Cramér-type moderate
deviations for the Euler-Maruyama scheme for SDE. Due to our results, Berry-Esseen's …

Cramér type moderate deviations for random fields

A Beknazaryan, H Sang, Y **ao - Journal of Applied Probability, 2019 - cambridge.org
CRAMÉR TYPE MODERATE DEVIATIONS FOR RANDOM FIELDS Page 1 J. Appl. Prob. 56,
223–245 (2019) doi:10.1017/jpr.2019.15 © Applied Probability Trust 2019 CRAMÉR TYPE …

Sharp large deviation results for sums of independent random variables

X Fan, I Grama, Q Liu - Science China Mathematics, 2015 - Springer
We show sharp bounds for probabilities of large deviations for sums of independent random
variables satisfying Bernstein's condition. One such bound is very close to the tail of the …

Cramér-type moderate deviations under local dependence

SH Liu, ZS Zhang - The Annals of Applied Probability, 2023 - projecteuclid.org
We establish Cramér-type moderate deviation theorems for the sums of locally dependent
random variables and combinatorial central limit theorems. Optimal error bounds and …

[PDF][PDF] Best arm identification with a fixed budget under a small gap

M Kato, K Ariu, M Imaizumi, M Uehara, M Nomura… - stat, 2022 - aeaweb.org
➢ Keywords: Causal inference, decision-making, and experimental design.∎ Treatment arm
(arm/treatment/policy). ex. drugs, advertisements, and economic policies.• Each treatment …