Search Results for author: Thuc Duy Le

Found 22 papers, 2 papers with code

Robust COVID-19 Detection in CT Images with CLIP

1 code implementation13 Mar 2024 Li Lin, Yamini Sri Krubha, Zhenhuan Yang, Cheng Ren, Thuc Duy Le, Irene Amerini, Xin Wang, Shu Hu

In the realm of medical imaging, particularly for COVID-19 detection, deep learning models face substantial challenges such as the necessity for extensive computational resources, the paucity of well-annotated datasets, and a significant amount of unlabeled data.

Instrumental Variable Estimation for Causal Inference in Longitudinal Data with Time-Dependent Latent Confounders

no code implementations12 Dec 2023 Debo Cheng, Ziqi Xu, Jiuyong Li, Lin Liu, Jixue Liu, Wentao Gao, Thuc Duy Le

Causal inference from longitudinal observational data is a challenging problem due to the difficulty in correctly identifying the time-dependent confounders, especially in the presence of latent time-dependent confounders.

Causal Inference

Conditional Instrumental Variable Regression with Representation Learning for Causal Inference

no code implementations3 Oct 2023 Debo Cheng, Ziqi Xu, Jiuyong Li, Lin Liu, Jixue Liu, Thuc Duy Le

To address these challenging and practical problems of the standard IV method (linearity assumption and the strict condition), in this paper, we use a conditional IV (CIV) to relax the unconfounded instrument condition of standard IV and propose a non-linear CIV regression with Confounding Balancing Representation Learning, CBRL. CIV, for jointly eliminating the confounding bias from unobserved confounders and balancing the observed confounders, without the linearity assumption.

Causal Inference regression +1

Learning Conditional Instrumental Variable Representation for Causal Effect Estimation

1 code implementation21 Jun 2023 Debo Cheng, Ziqi Xu, Jiuyong Li, Lin Liu, Thuc Duy Le, Jixue Liu

One of the fundamental challenges in causal inference is to estimate the causal effect of a treatment on its outcome of interest from observational data.

Causal Inference Representation Learning

Linking a predictive model to causal effect estimation

no code implementations10 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.

Decision Making Fairness

Causal Inference with Conditional Instruments using Deep Generative Models

no code implementations29 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.

Causal Inference

Data-Driven Causal Effect Estimation Based on Graphical Causal Modelling: A Survey

no code implementations20 Aug 2022 Debo Cheng, Jiuyong Li, Lin Liu, Jixue Liu, Thuc Duy Le

In recent years, research has emerged to use search strategies based on graphical causal modelling to discover useful knowledge from data for causal effect estimation, with some mild assumptions, and has shown promise in tackling the practical challenge.

Decision Making

Explanatory causal effects for model agnostic explanations

no code implementations23 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.

Ancestral Instrument Method for Causal Inference without Complete Knowledge

no code implementations11 Jan 2022 Debo Cheng, Jiuyong Li, Lin Liu, Jiji Zhang, Thuc Duy Le, Jixue Liu

Based on the theory, we develop an algorithm for unbiased causal effect estimation with a given ancestral IV and observational data.

Causal Inference valid

Computational methods for cancer driver discovery: A survey

no code implementations2 Jul 2020 Vu Viet Hoang Pham, Lin Liu, Cameron Bracken, Gregory Goodall, Jiuyong Li, Thuc Duy Le

Due to the complexity of the mechanistic insight of cancer genes in driving cancer and the fast development of the field, it is necessary to have a comprehensive review about the current computational methods for discovering different types of cancer drivers.

Driver Identification

A general framework for causal classification

no code implementations25 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.

Classification Decision Making +2

Causal query in observational data with hidden variables

no code implementations28 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.

Identify treatment effect patterns for personalised decisions

no code implementations14 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.

Decision Making

An exploration of algorithmic discrimination in data and classification

no code implementations6 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.

Classification General Classification

FairMod - Making Predictive Models Discrimination Aware

no code implementations5 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.

General Classification

Discovering Context Specific Causal Relationships

no code implementations20 Aug 2018 Saisai Ma, Jiuyong Li, Lin Liu, Thuc Duy Le

With the increasing need of personalised decision making, such as personalised medicine and online recommendations, a growing attention has been paid to the discovery of the context and heterogeneity of causal relationships.

Causal Inference Decision Making +1

ParallelPC: an R package for efficient constraint based causal exploration

no code implementations11 Oct 2015 Thuc Duy Le, Tao Hoang, Jiuyong Li, Lin Liu, Shu Hu

Discovering causal relationships from data is the ultimate goal of many research areas.

Mining Combined Causes in Large Data Sets

no code implementations28 Aug 2015 Saisai Ma, Jiuyong Li, Lin Liu, Thuc Duy Le

A straightforward approach to uncovering a combined cause is to include both individual and combined variables in the causal discovery using existing methods, but this scheme is computationally infeasible due to the huge number of combined variables.

Causal Discovery Computational Efficiency

Causal Decision Trees

no code implementations16 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.

Causal Discovery Causal Inference +2

From Observational Studies to Causal Rule Mining

no code implementations16 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.

Causal Discovery

A fast PC algorithm for high dimensional causal discovery with multi-core PCs

no code implementations9 Feb 2015 Thuc Duy Le, Tao Hoang, Jiuyong Li, Lin Liu, Huawen Liu

However, runtime of the PC algorithm, in the worst-case, is exponential to the number of nodes (variables), and thus it is inefficient when being applied to high dimensional data, e. g. gene expression datasets.

Causal Discovery Causal Inference

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