Search Results for author: Dang Nguyen

Found 24 papers, 9 papers with code

DANGNT-SGU at SemEval-2022 Task 11: Using Pre-trained Language Model for Complex Named Entity Recognition

no code implementations SemEval (NAACL) 2022 Dang Nguyen, Huy Khac Nguyen Huynh

In this paper, we describe a system that we built to participate in the SemEval 2022 Task 11: MultiCoNER Multilingual Complex Named Entity Recognition, specifically the track Mono-lingual in English.

Language Modelling named-entity-recognition +2

DeepCoDA: personalized interpretability for compositional health

1 code implementation ICML 2020 Thomas Quinn, Dang Nguyen, Santu Rana, Sunil Gupta, Svetha Venkatesh

Interpretability allows the domain-expert to directly evaluate the model's relevance and reliability, a practice that offers assurance and builds trust.

Active Level Set Estimation for Continuous Search Space with Theoretical Guarantee

no code implementations26 Feb 2024 Giang Ngo, Dang Nguyen, Dat Phan-Trong, Sunil Gupta

When the function is black-box and expensive to evaluate, the level sets need to be found in a minimum set of function evaluations.

Variational Flow Models: Flowing in Your Style

no code implementations5 Feb 2024 Kien Do, Duc Kieu, Toan Nguyen, Dang Nguyen, Hung Le, Dung Nguyen, Thin Nguyen

We introduce "posterior flows" - generalizations of "probability flows" to a broader class of stochastic processes not necessarily diffusion processes - and propose a systematic training-free method to transform the posterior flow of a "linear" stochastic process characterized by the equation Xt = at * X0 + st * X1 into a straight constant-speed (SC) flow, reminiscent of Rectified Flow.

Variational Inference

Revisiting the Dataset Bias Problem from a Statistical Perspective

no code implementations5 Feb 2024 Kien Do, Dung Nguyen, Hung Le, Thao Le, Dang Nguyen, Haripriya Harikumar, Truyen Tran, Santu Rana, Svetha Venkatesh

To overcome this challenge, we propose to approximate \frac{1}{p(u|b)} using a biased classifier trained with "bias amplification" losses.

Attribute

Pragmatic Radiology Report Generation

1 code implementation28 Nov 2023 Dang Nguyen, Chacha Chen, He He, Chenhao Tan

When pneumonia is not found on a chest X-ray, should the report describe this negative observation or omit it?

Real-Time Magnetic Tracking and Diagnosis of COVID-19 via Machine Learning

no code implementations1 Nov 2023 Dang Nguyen, Phat K. Huynh, Vinh Duc An Bui, Kee Young Hwang, Nityanand Jain, Chau Nguyen, Le Huu Nhat Minh, Le Van Truong, Xuan Thanh Nguyen, Dinh Hoang Nguyen, Le Tien Dung, Trung Q. Le, Manh-Huong Phan

In this work, we fused magnetic respiratory sensing technology (MRST) with machine learning (ML) to create a diagnostic platform for real-time tracking and diagnosis of COVID-19 and other respiratory diseases.

Understanding the Robustness of Multi-modal Contrastive Learning to Distribution Shift

no code implementations8 Oct 2023 Yihao Xue, Siddharth Joshi, Dang Nguyen, Baharan Mirzasoleiman

Recently, multimodal contrastive learning (MMCL) approaches, such as CLIP, have achieved a remarkable success in learning representations that are robust against distribution shift and generalize to new domains.

Contrastive Learning Zero-Shot Learning

Self-Attention Amortized Distributional Projection Optimization for Sliced Wasserstein Point-Cloud Reconstruction

1 code implementation12 Jan 2023 Khai Nguyen, Dang Nguyen, Nhat Ho

Despite being efficient, Max-SW and its amortized version cannot guarantee metricity property due to the sub-optimality of the projected gradient ascent and the amortization gap.

Point cloud reconstruction

Momentum Adversarial Distillation: Handling Large Distribution Shifts in Data-Free Knowledge Distillation

no code implementations21 Sep 2022 Kien Do, Hung Le, Dung Nguyen, Dang Nguyen, Haripriya Harikumar, Truyen Tran, Santu Rana, Svetha Venkatesh

Since the EMA generator can be considered as an ensemble of the generator's old versions and often undergoes a smaller change in updates compared to the generator, training on its synthetic samples can help the student recall the past knowledge and prevent the student from adapting too quickly to new updates of the generator.

Data-free Knowledge Distillation

Efficient Classification with Counterfactual Reasoning and Active Learning

1 code implementation25 Jul 2022 Azhar Mohammed, Dang Nguyen, Bao Duong, Thin Nguyen

Data augmentation is one of the most successful techniques to improve the classification accuracy of machine learning models in computer vision.

Active Learning Classification +3

Black-box Few-shot Knowledge Distillation

1 code implementation25 Jul 2022 Dang Nguyen, Sunil Gupta, Kien Do, Svetha Venkatesh

Traditional KD methods require lots of labeled training samples and a white-box teacher (parameters are accessible) to train a good student.

Image Classification Knowledge Distillation

On Cross-Layer Alignment for Model Fusion of Heterogeneous Neural Networks

no code implementations29 Oct 2021 Dang Nguyen, Trang Nguyen, Khai Nguyen, Dinh Phung, Hung Bui, Nhat Ho

To address this issue, we propose a novel model fusion framework, named CLAFusion, to fuse neural networks with a different number of layers, which we refer to as heterogeneous neural networks, via cross-layer alignment.

Knowledge Distillation Model Compression

Improving Mini-batch Optimal Transport via Partial Transportation

2 code implementations22 Aug 2021 Khai Nguyen, Dang Nguyen, The-Anh Vu-Le, Tung Pham, Nhat Ho

Mini-batch optimal transport (m-OT) has been widely used recently to deal with the memory issue of OT in large-scale applications.

Partial Domain Adaptation

Hub and Spoke Logistics Network Design for Urban Region with Clustering-Based Approach

no code implementations7 Jul 2021 Quan Duong, Dang Nguyen, Quoc Nguyen

This study aims to propose effective modeling and approach for designing a logistics network in the urban area in order to offer an efficient flow distribution network as a competitive strategy in the logistics industry where demand is sensitive to both price and time.

Clustering Decision Making

On Transportation of Mini-batches: A Hierarchical Approach

2 code implementations11 Feb 2021 Khai Nguyen, Dang Nguyen, Quoc Nguyen, Tung Pham, Hung Bui, Dinh Phung, Trung Le, Nhat Ho

To address these problems, we propose a novel mini-batch scheme for optimal transport, named Batch of Mini-batches Optimal Transport (BoMb-OT), that finds the optimal coupling between mini-batches and it can be seen as an approximation to a well-defined distance on the space of probability measures.

Domain Adaptation

Bayesian Optimization with Missing Inputs

no code implementations19 Jun 2020 Phuc Luong, Dang Nguyen, Sunil Gupta, Santu Rana, Svetha Venkatesh

In real-world applications, BO often faces a major problem of missing values in inputs.

Bayesian Optimization

DeepCoDA: personalized interpretability for compositional health data

1 code implementation2 Jun 2020 Thomas P. Quinn, Dang Nguyen, Santu Rana, Sunil Gupta, Svetha Venkatesh

We define personalized interpretability as a measure of sample-specific feature attribution, and view it as a minimum requirement for a precision health model to justify its conclusions.

Bayesian Optimization for Categorical and Category-Specific Continuous Inputs

1 code implementation28 Nov 2019 Dang Nguyen, Sunil Gupta, Santu Rana, Alistair Shilton, Svetha Venkatesh

To optimize such functions, we propose a new method that formulates the problem as a multi-armed bandit problem, wherein each category corresponds to an arm with its reward distribution centered around the optimum of the objective function in continuous variables.

Bayesian Optimization BIG-bench Machine Learning +1

UIT-DANGNT-CLNLP at SemEval-2017 Task 9: Building Scientific Concept Fixing Patterns for Improving CAMR

no code implementations SEMEVAL 2017 Khoa Nguyen, Dang Nguyen

This paper describes the improvements that we have applied on CAMR baseline parser (Wang et al., 2016) at Task 8 of SemEval-2016.

Control Matching via Discharge Code Sequences

no code implementations2 Dec 2016 Dang Nguyen, Wei Luo, Dinh Phung, Svetha Venkatesh

In this paper, we consider the patient similarity matching problem over a cancer cohort of more than 220, 000 patients.

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