no code implementations • 24 Apr 2023 • Ziqi Xu, Debo Cheng, Jiuyong Li, Jixue Liu, Lin Liu, Kui Yu
In practice, it is often difficult to identify the set of variables used for front-door adjustment from data.
no code implementations • 10 Apr 2023 • Jiuyong Li, Lin Liu, Ziqi Xu, Ha Xuan Tran, Thuc Duy Le, Jixue Liu
This paper first tackles the challenge of estimating the causal effect of any feature (as the treatment) on the outcome w. r. t.
1 code implementation • 19 Feb 2023 • Ziqi Xu, Debo Cheng, Jiuyong Li, Jixue Liu, Lin Liu, Ke Wang
Causal mediation analysis is a method that is often used to reveal direct and indirect effects.
no code implementations • 29 Nov 2022 • Debo Cheng, Ziqi Xu, Jiuyong Li, Lin Liu, Jixue Liu, Thuc Duy Le
The instrumental variable (IV) approach is a widely used way to estimate the causal effects of a treatment on an outcome of interest from observational data with latent confounders.
no code implementations • 20 Aug 2022 • Debo Cheng, Jiuyong Li, Lin Liu, Jixue Liu, Thuc Duy Le
In recent years, research has emerged to use a search strategy based on graphical causal modelling to discover useful knowledge from data for causal effect estimation, with some mild assumptions, and has shown promose in tackling the practical challenge.
no code implementations • 19 Aug 2022 • Ziqi Xu, Jixue Liu, Debo Cheng, Jiuyong Li, Lin Liu, Ke Wang
Much research has been devoted to the problem of learning fair representations; however, they do not explicitly the relationship between latent representations.
no code implementations • 23 Jun 2022 • Jiuyong Li, Ha Xuan Tran, Thuc Duy Le, Lin Liu, Kui Yu, Jixue Liu
This paper studies the problem of estimating the contributions of features to the prediction of a specific instance by a machine learning model and the overall contribution of a feature to the model.
1 code implementation • 4 Jun 2022 • Debo Cheng, Jiuyong Li, Lin Liu, Kui Yu, Thuc Duy Lee, Jixue Liu
Based on the theory, we propose a data-driven algorithm to discover a pair of IVs from data.
no code implementations • 11 Jan 2022 • Debo Cheng, Jiuyong Li, Lin Liu, Jiji Zhang, Thuc Duy Le, Jixue Liu
Conditional IV has been proposed to relax the requirement of standard IV by conditioning on a set of observed variables (known as a conditioning set for a conditional IV).
no code implementations • 13 Nov 2020 • Sha Lu, Lin Liu, Jiuyong Li, Thuc Duy Le, Jixue Liu
To show the effectiveness of DepAD, we compare two DepAD methods with nine state-of-the-art anomaly detection methods, and the results show that DepAD methods outperform comparison methods in most cases.
no code implementations • 8 Oct 2020 • Zhenlong Xu, Jixue Liu, Debo Cheng, Jiuyong Li, Lin Liu, Ke Wang, Ziqi Xu, Zhenlong Xu contributed equally to this paper
The increasing application of machine learning techniques in everyday decision-making processes has brought concerns about the fairness of algorithmic decision-making.
no code implementations • 14 Sep 2020 • Debo Cheng, Jiuyong Li, Lin Liu, Jixue Liu
Having a large number of covariates can have a negative impact on the quality of causal effect estimation since confounding adjustment becomes unreliable when the number of covariates is large relative to the samples available.
no code implementations • 25 Mar 2020 • Jiuyong Li, Weijia Zhang, Lin Liu, Kui Yu, Thuc Duy Le, Jixue Liu
We also propose a general framework for causal classification, by using off-the-shelf supervised methods for flexible implementations.
no code implementations • 24 Feb 2020 • Debo Cheng, Jiuyong Li, Lin Liu, Kui Yu, Thuc Duy Lee, Jixue Liu
Based on the theorems, two algorithms are proposed for finding the proper adjustment sets from data with hidden variables to obtain unbiased and unique causal effect estimation.
no code implementations • 28 Jan 2020 • Debo Cheng, Jiuyong Li, Lin Liu, Jixue Liu, Kui Yu, Thuc Duy Le
In this paper, we develop a theorem for using local search to find a superset of the adjustment (or confounding) variables for causal effect estimation from observational data under a realistic pretreatment assumption.
no code implementations • 13 Aug 2019 • Jixue Liu, Selasi Kwashie, Jiuyong Li, Lin Liu, Michael Bewong
The graph model is versatile, thus, it is capable of handling multiple values for an attribute or a relationship, as well as the provenance descriptions of the values.
no code implementations • 14 Jun 2019 • Jiuyong Li, Lin Liu, Shisheng Zhang, Saisai Ma, Thuc Duy Le, Jixue Liu
The existing interpretable modelling methods take a top-down approach to search for subgroups with heterogeneous treatment effects and they may miss the most specific and relevant context for an individual.
no code implementations • 6 Nov 2018 • Jixue Liu, Jiuyong Li, Feiyue Ye, Lin Liu, Thuc Duy Le, Ping Xiong
The paper uses real world data sets to demonstrate the existence of discrimination and the independence between the discrimination of data sets and the discrimination of classification models.
no code implementations • 5 Nov 2018 • Jixue Liu, Jiuyong Li, Lin Liu, Thuc Duy Le, Feiyue Ye, Gefei Li
It models the post-processing of predictions problem as a nonlinear optimization problem to find best adjustments to the predictions so that the discrimination constraints of all protected variables are all met at the same time.
no code implementations • 18 Dec 2016 • Jiuyong Li, Lin Liu, Jixue Liu, Ryan Green
It is common that a trained classification model is applied to the operating data that is deviated from the training data because of noise.
no code implementations • 16 Aug 2015 • Jiuyong Li, Saisai Ma, Thuc Duy Le, Lin Liu, Jixue Liu
Classification methods are fast and they could be practical substitutes for finding causal signals in data.
no code implementations • 16 Aug 2015 • Jiuyong Li, Thuc Duy Le, Lin Liu, Jixue Liu, Zhou Jin, Bingyu Sun, Saisai Ma
Specifically, association rule mining can be used to deal with the high-dimensionality problem while observational studies can be utilised to eliminate non-causal associations.