Search Results for author: Hoang H. Nguyen

Found 6 papers, 4 papers with code

On Partial Optimal Transport: Revising the Infeasibility of Sinkhorn and Efficient Gradient Methods

no code implementations21 Dec 2023 Anh Duc Nguyen, Tuan Dung Nguyen, Quang Minh Nguyen, Hoang H. Nguyen, Lam M. Nguyen, Kim-Chuan Toh

This paper studies the Partial Optimal Transport (POT) problem between two unbalanced measures with at most $n$ supports and its applications in various AI tasks such as color transfer or domain adaptation.

Domain Adaptation Point Cloud Registration

CoF-CoT: Enhancing Large Language Models with Coarse-to-Fine Chain-of-Thought Prompting for Multi-domain NLU Tasks

1 code implementation23 Oct 2023 Hoang H. Nguyen, Ye Liu, Chenwei Zhang, Tao Zhang, Philip S. Yu

While Chain-of-Thought prompting is popular in reasoning tasks, its application to Large Language Models (LLMs) in Natural Language Understanding (NLU) is under-explored.

Natural Language Understanding

Slot Induction via Pre-trained Language Model Probing and Multi-level Contrastive Learning

1 code implementation9 Aug 2023 Hoang H. Nguyen, Chenwei Zhang, Ye Liu, Philip S. Yu

Recent advanced methods in Natural Language Understanding for Task-oriented Dialogue (TOD) Systems (e. g., intent detection and slot filling) require a large amount of annotated data to achieve competitive performance.

Contrastive Learning Intent Detection +5

Enhancing Cross-lingual Transfer via Phonemic Transcription Integration

1 code implementation10 Jul 2023 Hoang H. Nguyen, Chenwei Zhang, Tao Zhang, Eugene Rohrbaugh, Philip S. Yu

Particularly, we propose unsupervised alignment objectives to capture (1) local one-to-one alignment between the two different modalities, (2) alignment via multi-modality contexts to leverage information from additional modalities, and (3) alignment via multilingual contexts where additional bilingual dictionaries are incorporated.

Cross-Lingual Transfer named-entity-recognition +3

MANDO: Multi-Level Heterogeneous Graph Embeddings for Fine-Grained Detection of Smart Contract Vulnerabilities

1 code implementation28 Aug 2022 Hoang H. Nguyen, Nhat-Minh Nguyen, Chunyao Xie, Zahra Ahmadi, Daniel Kudendo, Thanh-Nam Doan, Lingxiao Jiang

Moreover, it develops a multi-metapath heterogeneous graph attention network to learn multi-level embeddings of different types of nodes and their metapaths in the heterogeneous contract graphs, which can capture the code semantics of smart contracts more accurately and facilitate both fine-grained line-level and coarse-grained contract-level vulnerability detection.

Graph Attention Vulnerability Detection

On Unbalanced Optimal Transport: Gradient Methods, Sparsity and Approximation Error

no code implementations8 Feb 2022 Quang Minh Nguyen, Hoang H. Nguyen, Yi Zhou, Lam M. Nguyen

In this paper, we propose a novel algorithm based on Gradient Extrapolation Method (GEM-UOT) to find an $\varepsilon$-approximate solution to the UOT problem in $O\big( \kappa \log\big(\frac{\tau n}{\varepsilon}\big) \big)$ iterations with $\widetilde{O}(n^2)$ per-iteration cost, where $\kappa$ is the condition number depending on only the two input measures.

Retrieval

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