Search Results for author: Mengxin Yu

Found 10 papers, 1 papers with code

SymmPI: Predictive Inference for Data with Group Symmetries

1 code implementation26 Dec 2023 Edgar Dobriban, Mengxin Yu

Methods for predictive inference have been developed under a variety of assumptions, often -- for instance, in standard conformal prediction -- relying on the invariance of the distribution of the data under special groups of transformations such as permutation groups.

Conformal Prediction valid

Spectral Ranking Inferences based on General Multiway Comparisons

no code implementations5 Aug 2023 Jianqing Fan, Zhipeng Lou, Weichen Wang, Mengxin Yu

This paper studies the performance of the spectral method in the estimation and uncertainty quantification of the unobserved preference scores of compared entities in a general and more realistic setup.

Uncertainty Quantification

Uncertainty Quantification of MLE for Entity Ranking with Covariates

no code implementations20 Dec 2022 Jianqing Fan, Jikai Hou, Mengxin Yu

This paper concerns with statistical estimation and inference for the ranking problems based on pairwise comparisons with additional covariate information such as the attributes of the compared items.

Uncertainty Quantification

Ranking Inferences Based on the Top Choice of Multiway Comparisons

no code implementations22 Nov 2022 Jianqing Fan, Zhipeng Lou, Weichen Wang, Mengxin Yu

The estimated distribution is then used to construct simultaneous confidence intervals for the differences in the preference scores and the ranks of individual items.

valid

Robust High-dimensional Tuning Free Multiple Testing

no code implementations22 Nov 2022 Jianqing Fan, Zhipeng Lou, Mengxin Yu

A stylized feature of high-dimensional data is that many variables have heavy tails, and robust statistical inference is critical for valid large-scale statistical inference.

valid Vocal Bursts Intensity Prediction

Strategic Decision-Making in the Presence of Information Asymmetry: Provably Efficient RL with Algorithmic Instruments

no code implementations23 Aug 2022 Mengxin Yu, Zhuoran Yang, Jianqing Fan

We study offline reinforcement learning under a novel model called strategic MDP, which characterizes the strategic interactions between a principal and a sequence of myopic agents with private types.

Decision Making Offline RL +3

Are Latent Factor Regression and Sparse Regression Adequate?

no code implementations2 Mar 2022 Jianqing Fan, Zhipeng Lou, Mengxin Yu

To fill in such an important gap, we also leverage our model as the alternative model to test the sufficiency of the latent factor regression and the sparse linear regression models.

Dimensionality Reduction regression

Policy Optimization Using Semi-parametric Models for Dynamic Pricing

no code implementations13 Sep 2021 Jianqing Fan, Yongyi Guo, Mengxin Yu

$F(\cdot)$ with $m$-th order derivative ($m\geq 2$), our policy achieves a regret upper bound of $\tilde{O}_{d}(T^{\frac{2m+1}{4m-1}})$, where $T$ is time horizon and $\tilde{O}_{d}$ is the order that hides logarithmic terms and the dimensionality of feature $d$.

Decision Making

Understanding Implicit Regularization in Over-Parameterized Single Index Model

no code implementations16 Jul 2020 Jianqing Fan, Zhuoran Yang, Mengxin Yu

For both the vector and matrix settings, we construct an over-parameterized least-squares loss function by employing the score function transform and a robust truncation step designed specifically for heavy-tailed data.

Variable Selection

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