Search Results for author: Xing Yan

Found 12 papers, 3 papers with code

The Causal Impact of Credit Lines on Spending Distributions

1 code implementation16 Dec 2023 Yijun Li, Cheuk Hang Leung, Xiangqian Sun, Chaoqun Wang, Yiyan Huang, Xing Yan, Qi Wu, Dongdong Wang, Zhixiang Huang

Consumer credit services offered by e-commerce platforms provide customers with convenient loan access during shopping and have the potential to stimulate sales.

Invariant Random Forest: Tree-Based Model Solution for OOD Generalization

no code implementations7 Dec 2023 Yufan Liao, Qi Wu, Xing Yan

This paper introduces a novel and effective solution for OOD generalization of decision tree models, named Invariant Decision Tree (IDT).

Dynamic CVaR Portfolio Construction with Attention-Powered Generative Factor Learning

no code implementations18 Jan 2023 Chuting Sun, Qi Wu, Xing Yan

The dynamic portfolio construction problem requires dynamic modeling of the joint distribution of multivariate stock returns.

Portfolio Optimization

Improving Uncertainty Quantification of Variance Networks by Tree-Structured Learning

1 code implementation24 Dec 2022 Wenxuan Ma, Xing Yan, Kun Zhang

A tree is built upon giving the training data, whose leaf nodes represent different regions where region-specific neural networks are trained to predict both the mean and the variance for quantifying uncertainty.

Uncertainty Quantification

Ensemble Multi-Quantiles: Adaptively Flexible Distribution Prediction for Uncertainty Quantification

1 code implementation26 Nov 2022 Xing Yan, Yonghua Su, Wenxuan Ma

We seek an adaptive balance between the structural integrity and the flexibility for $\mathbb{P}(\mathbf{y}|\mathbf{X}=x)$, while Gaussian assumption results in a lack of flexibility for real data and highly flexible approaches (e. g., estimating the quantiles separately without a distribution structure) inevitably have drawbacks and may not lead to good generalization.

Additive models regression +1

Decorr: Environment Partitioning for Invariant Learning and OOD Generalization

no code implementations18 Nov 2022 Yufan Liao, Qi Wu, Xing Yan

Invariant learning methods try to find an invariant predictor across several environments and have become popular in OOD generalization.

Robust Causal Learning for the Estimation of Average Treatment Effects

no code implementations5 Sep 2022 Yiyan Huang, Cheuk Hang Leung, Xing Yan, Qi Wu, Shumin Ma, Zhiri Yuan, Dongdong Wang, Zhixiang Huang

Theoretically, the RCL estimators i) are as consistent and doubly robust as the DML estimators, and ii) can get rid of the error-compounding issue.

Decision Making

Risk and return prediction for pricing portfolios of non-performing consumer credit

no code implementations28 Oct 2021 Siyi Wang, Xing Yan, Bangqi Zheng, Hu Wang, Wangli Xu, Nanbo Peng, Qi Wu

We design a system for risk-analyzing and pricing portfolios of non-performing consumer credit loans.

Robust Orthogonal Machine Learning of Treatment Effects

no code implementations22 Mar 2021 Yiyan Huang, Cheuk Hang Leung, Qi Wu, Xing Yan

Theoretically, the RCL estimators i) satisfy the (higher-order) orthogonal condition and are as \textit{consistent and doubly robust} as the DML estimators, and ii) get rid of the error-compounding issue.

BIG-bench Machine Learning

The Causal Learning of Retail Delinquency

no code implementations17 Dec 2020 Yiyan Huang, Cheuk Hang Leung, Xing Yan, Qi Wu, Nanbo Peng, Dongdong Wang, Zhixiang Huang

Classical estimators overlook the confounding effects and hence the estimation error can be magnificent.

Generative Learning of Heterogeneous Tail Dependence

no code implementations26 Nov 2020 Xiangqian Sun, Xing Yan, Qi Wu

We propose a multivariate generative model to capture the complex dependence structure often encountered in business and financial data.

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