Search Results for author: Fang Chen

Found 69 papers, 13 papers with code

Distillation-Driven Diffusion Model for Multi-Scale MRI Super-Resolution: Make 1.5T MRI Great Again

1 code implementation30 Jan 2025 Zhe Wang, Yuhua Ru, Fabian Bauer, Aladine Chetouani, Fang Chen, Liping Zhang, Didier Hans, Rachid Jennane, Mohamed Jarraya, Yung Hsin Chen

Specifically, the student model refines the 7T SR task with steps, leveraging feature maps from the inference phase of the teacher model as guidance, aiming to allow the student model to achieve progressively 7T SR performance with a smaller, deployable model size.

Super-Resolution

Generating with Fairness: A Modality-Diffused Counterfactual Framework for Incomplete Multimodal Recommendations

no code implementations21 Jan 2025 Jin Li, Shoujin Wang, Qi Zhang, Shui Yu, Fang Chen

However, two significant gaps persist: 1) the difficulty in accurately generating missing data due to the limited ability to capture modality distributions; and 2) the critical but overlooked visibility bias, where items with missing modalities are more likely to be disregarded due to the prioritization of items' multimodal data over user preference alignment.

counterfactual Fairness +1

Attribution for Enhanced Explanation with Transferable Adversarial eXploration

no code implementations27 Dec 2024 Zhiyu Zhu, Jiayu Zhang, Zhibo Jin, Huaming Chen, Jianlong Zhou, Fang Chen

The interpretability of deep neural networks is crucial for understanding model decisions in various applications, including computer vision.

Adversarial Attack Diversity

LLM-RG4: Flexible and Factual Radiology Report Generation across Diverse Input Contexts

1 code implementation16 Dec 2024 Zhuhao Wang, Yihua Sun, Zihan Li, Xuan Yang, Fang Chen, Hongen Liao

To bridge the gap between current RRG models and the clinical demands in practice, we first develop a data generation pipeline to create a new MIMIC-RG4 dataset, which considers four common radiology report drafting scenarios and has perfectly corresponded input and output.

General Knowledge Instruction Following +2

Navigating Towards Fairness with Data Selection

no code implementations15 Dec 2024 Yixuan Zhang, Zhidong Li, Yang Wang, Fang Chen, Xuhui Fan, Feng Zhou

Machine learning algorithms often struggle to eliminate inherent data biases, particularly those arising from unreliable labels, which poses a significant challenge in ensuring fairness.

Fairness Holdout Set

Can GNNs Learn Link Heuristics? A Concise Review and Evaluation of Link Prediction Methods

1 code implementation22 Nov 2024 Shuming Liang, Yu Ding, Zhidong Li, Bin Liang, Siqi Zhang, Yang Wang, Fang Chen

This paper explores the ability of Graph Neural Networks (GNNs) in learning various forms of information for link prediction, alongside a brief review of existing link prediction methods.

Attribute Link Prediction +1

RED: Residual Estimation Diffusion for Low-Dose PET Sinogram Reconstruction

no code implementations8 Nov 2024 Xingyu Ai, Bin Huang, Fang Chen, Liu Shi, Binxuan Li, Shaoyu Wang, Qiegen Liu

From the perspective of diffusion mechanism, RED uses the residual between sinograms to replace Gaussian noise in diffusion process, respectively sets the low-dose and full-dose sinograms as the starting point and endpoint of reconstruction.

Feasibility Study of a Diffusion-Based Model for Cross-Modal Generation of Knee MRI from X-ray: Integrating Radiographic Feature Information

no code implementations9 Oct 2024 Zhe Wang, Yung Hsin Chen, Aladine Chetouani, Fabian Bauer, Yuhua Ru, Fang Chen, Liping Zhang, Rachid Jennane, Mohamed Jarraya

Through ablation studies, we further validate that integrating supplementary patient-specific information, beyond what X-rays alone can provide, enhances the accuracy and clinical relevance of the generated MRI, which underscores the potential of leveraging external patient-specific information to improve the MRI generation.

IVGF: The Fusion-Guided Infrared and Visible General Framework

no code implementations2 Sep 2024 Fangcen Liu, Chenqiang Gao, Fang Chen, Pengcheng Li, Junjie Guo, Deyu Meng

Besides, the attention-guided fusion module is proposed for effectively fusing by exploring the complementary information of two modalities.

Data Augmentation object-detection +3

Enhancing Adversarial Attacks via Parameter Adaptive Adversarial Attack

no code implementations14 Aug 2024 Zhibo Jin, Jiayu Zhang, Zhiyu Zhu, Chenyu Zhang, Jiahao Huang, Jianlong Zhou, Fang Chen

Given the essence of adversarial attacks is to impair model integrity with minimal noise on original samples, exploring avenues to maximize the utility of such perturbations is imperative.

Adversarial Attack

TransFeat-TPP: An Interpretable Deep Covariate Temporal Point Processes

no code implementations23 Jul 2024 Zizhuo Meng, Boyu Li, Xuhui Fan, Zhidong Li, Yang Wang, Fang Chen, Feng Zhou

The classical temporal point process (TPP) constructs an intensity function by taking the occurrence times into account.

Feature Importance Point Processes

ReDistill: Residual Encoded Distillation for Peak Memory Reduction

no code implementations6 Jun 2024 Fang Chen, Gourav Datta, Mujahid Al Rafi, Hyeran Jeon, Meng Tang

Reducing peak memory, which is the maximum memory consumed during the execution of a neural network, is critical to deploy neural networks on edge devices with limited memory budget.

Denoising Image Classification +1

Interpretable Robotic Manipulation from Language

no code implementations27 May 2024 Boyuan Zheng, Jianlong Zhou, Fang Chen

Natural language, moreover, serves as the primary medium through which humans acquire new knowledge, presenting a potentially intuitive bridge for translating concepts understandable by humans into formats that can be learned by machines.

Dinomaly: The Less Is More Philosophy in Multi-Class Unsupervised Anomaly Detection

1 code implementation23 May 2024 Jia Guo, Shuai Lu, Weihang Zhang, Fang Chen, Hongen Liao, Huiqi Li

Recent studies highlighted a practical setting of unsupervised anomaly detection (UAD) that builds a unified model for multi-class images.

Multi-class Anomaly Detection Philosophy +1

Semantic-Preserving Feature Partitioning for Multi-View Ensemble Learning

no code implementations11 Jan 2024 Mohammad Sadegh Khorshidi, Navid Yazdanjue, Hassan Gharoun, Danial Yazdani, Mohammad Reza Nikoo, Fang Chen, Amir H. Gandomi

Addressing these challenges, multi-view ensemble learning (MEL) has emerged as a transformative approach, with feature partitioning (FP) playing a pivotal role in constructing artificial views for MEL.

Dimensionality Reduction Ensemble Learning

SimQ-NAS: Simultaneous Quantization Policy and Neural Architecture Search

no code implementations19 Dec 2023 Sharath Nittur Sridhar, Maciej Szankin, Fang Chen, Sairam Sundaresan, Anthony Sarah

In this paper, we demonstrate that by using multi-objective search algorithms paired with lightly trained predictors, we can efficiently search for both the sub-network architecture and the corresponding quantization policy and outperform their respective baselines across different performance objectives such as accuracy, model size, and latency.

Neural Architecture Search Quantization

The Innovation-to-Occupations Ontology: Linking Business Transformation Initiatives to Occupations and Skills

no code implementations27 Oct 2023 Daniela Elia, Fang Chen, Didar Zowghi, Marian-Andrei Rizoiu

The fast adoption of new technologies forces companies to continuously adapt their operations making it harder to predict workforce requirements.

ACGAN-GNNExplainer: Auxiliary Conditional Generative Explainer for Graph Neural Networks

no code implementations29 Sep 2023 Yiqiao Li, Jianlong Zhou, Yifei Dong, Niusha Shafiabady, Fang Chen

Graph neural networks (GNNs) have proven their efficacy in a variety of real-world applications, but their underlying mechanisms remain a mystery.

Decision Making Generative Adversarial Network

Ethical ChatGPT: Concerns, Challenges, and Commandments

no code implementations18 May 2023 Jianlong Zhou, Heimo Müller, Andreas Holzinger, Fang Chen

Large language models, e. g. ChatGPT are currently contributing enormously to make artificial intelligence even more popular, especially among the general population.

Chatbot

Confidence-Driven Deep Learning Framework for Early Detection of Knee Osteoarthritis

no code implementations23 Mar 2023 Zhe Wang, Aladine Chetouani, Yung Hsin Chen, Yuhua Ru, Fang Chen, Mohamed Jarraya, Fabian Bauer, Liping Zhang, Didier Hans, Rachid Jennane

Knee Osteoarthritis (KOA) is a prevalent musculoskeletal disorder that severely impacts mobility and quality of life, particularly among older adults.

Deep Learning Specificity

Meta-learning approaches for few-shot learning: A survey of recent advances

no code implementations13 Mar 2023 Hassan Gharoun, Fereshteh Momenifar, Fang Chen, Amir H. Gandomi

Despite its astounding success in learning deeper multi-dimensional data, the performance of deep learning declines on new unseen tasks mainly due to its focus on same-distribution prediction.

Deep Learning Few-Shot Learning

Explaining Imitation Learning through Frames

no code implementations3 Jan 2023 Boyuan Zheng, Jianlong Zhou, Chunjie Liu, Yiqiao Li, Fang Chen

As one of the prevalent methods to achieve automation systems, Imitation Learning (IL) presents a promising performance in a wide range of domains.

Explainable artificial intelligence Imitation Learning

GANExplainer: GAN-based Graph Neural Networks Explainer

no code implementations30 Dec 2022 Yiqiao Li, Jianlong Zhou, Boyuan Zheng, Fang Chen

With the rapid deployment of graph neural networks (GNNs) based techniques into a wide range of applications such as link prediction, node classification, and graph classification the explainability of GNNs has become an indispensable component for predictive and trustworthy decision-making.

Decision Making Generative Adversarial Network +4

DGNet: Distribution Guided Efficient Learning for Oil Spill Image Segmentation

no code implementations19 Dec 2022 Fang Chen, Heiko Balzter, Feixiang Zhou, Peng Ren, Huiyu Zhou

In this paper, we develop an effective segmentation framework named DGNet, which performs oil spill segmentation by incorporating the intrinsic distribution of backscatter values in SAR images.

Image Segmentation Segmentation +1

Self-Attentive Pooling for Efficient Deep Learning

no code implementations16 Sep 2022 Fang Chen, Gourav Datta, Souvik Kundu, Peter Beerel

With the aggressive down-sampling of the activation maps in the initial layers (providing up to 22x reduction in memory consumption), our approach achieves 1. 43% higher test accuracy compared to SOTA techniques with iso-memory footprints.

Deep Learning

Instance Image Retrieval by Learning Purely From Within the Dataset

no code implementations12 Aug 2022 Zhongyan Zhang, Lei Wang, Yang Wang, Luping Zhou, Jianjia Zhang, Peng Wang, Fang Chen

Although achieving promising results, this approach is restricted by two issues: 1) the domain gap between benchmark datasets and the dataset of a given retrieval task; 2) the required auxiliary dataset cannot be readily obtained.

Image Retrieval Retrieval +2

Cross-Skeleton Interaction Graph Aggregation Network for Representation Learning of Mouse Social Behaviour

1 code implementation7 Aug 2022 Feixiang Zhou, Xinyu Yang, Fang Chen, Long Chen, Zheheng Jiang, Hui Zhu, Reiko Heckel, Haikuan Wang, Minrui Fei, Huiyu Zhou

Furthermore, we design a novel Interaction-Aware Transformer (IAT) to dynamically learn the graph-level representation of social behaviours and update the node-level representation, guided by our proposed interaction-aware self-attention mechanism.

Representation Learning Self-Supervised Learning

De-biased Representation Learning for Fairness with Unreliable Labels

no code implementations1 Aug 2022 Yixuan Zhang, Feng Zhou, Zhidong Li, Yang Wang, Fang Chen

In other words, the fair pre-processing methods ignore the discrimination encoded in the labels either during the learning procedure or the evaluation stage.

Fairness Representation Learning

A Survey of Explainable Graph Neural Networks: Taxonomy and Evaluation Metrics

no code implementations26 Jul 2022 Yiqiao Li, Jianlong Zhou, Sunny Verma, Fang Chen

Graph neural networks (GNNs) have demonstrated a significant boost in prediction performance on graph data.

Detection of magnetohydrodynamic waves by using machine learning

no code implementations15 Jun 2022 Fang Chen, Ravi Samtaney

Identification of different types of MHD waves is an important and challenging task in such complex wave patterns.

BIG-bench Machine Learning regression +1

Infrared Small-Dim Target Detection with Transformer under Complex Backgrounds

no code implementations29 Sep 2021 Fangcen Liu, Chenqiang Gao, Fang Chen, Deyu Meng, WangMeng Zuo, Xinbo Gao

We adopt the self-attention mechanism of the transformer to learn the interaction information of image features in a larger range.

Evolutionary dynamics of zero-determinant strategies in repeated multiplayer games

no code implementations14 Sep 2021 Fang Chen, Te Wu, Long Wang

Here, we use a newly proposed state-clustering method to theoretically analyze the evolutionary dynamics of two representative ZD strategies: generous ZD strategies and extortionate ZD strategies.

State-clustering method of payoff computation in repeated multiplayer games

no code implementations24 Aug 2021 Fang Chen, Te Wu, Guocheng Wang, Long Wang

In this paper, we propose a new method, namely, the state-clustering method to calculate the long-term payoffs in repeated games.

Clustering

Local Patch Network with Global Attention for Infrared Small Target Detection

1 code implementation13 Aug 2021 Fang Chen, Chenqiang Gao, Fangcen Liu, Yue Zhao, Yuxi Zhou, Deyu Meng, WangMeng Zuo

A local patch network (LPNet) with global attention is proposed in this paper to detect small targets by jointly considering the global and local properties of infrared small target images.

Deep Learning Semantic Segmentation

Bias-Tolerant Fair Classification

no code implementations7 Jul 2021 Yixuan Zhang, Feng Zhou, Zhidong Li, Yang Wang, Fang Chen

Therefore, we propose a Bias-TolerantFAirRegularizedLoss (B-FARL), which tries to regain the benefits using data affected by label bias and selection bias.

Classification Fairness +2

Imitation Learning: Progress, Taxonomies and Challenges

no code implementations23 Jun 2021 Boyuan Zheng, Sunny Verma, Jianlong Zhou, Ivor Tsang, Fang Chen

Imitation learning aims to extract knowledge from human experts' demonstrations or artificially created agents in order to replicate their behaviors.

Autonomous Driving Imitation Learning

Facilitating Machine Learning Model Comparison and Explanation Through A Radial Visualisation

no code implementations15 Apr 2021 Jianlong Zhou, Weidong Huang, Fang Chen

The dependence of ML models with dynamic number of features is encoded into the structure of visualisation, where ML models and their dependent features are directly revealed from related line connections.

BIG-bench Machine Learning Feature Importance

Variational Co-embedding Learning for Attributed Network Clustering

no code implementations15 Apr 2021 Shuiqiao Yang, Sunny Verma, Borui Cai, Jiaojiao Jiang, Kun Yu, Fang Chen, Shui Yu

Recent works for attributed network clustering utilize graph convolution to obtain node embeddings and simultaneously perform clustering assignments on the embedding space.

Attribute Clustering +2

Boosted Genetic Algorithm using Machine Learning for traffic control optimization

no code implementations11 Mar 2021 Tuo Mao, Adriana-Simona Mihaita, Fang Chen, Hai L. Vu

Lastly, we propose a new algorithm BGA-ML combining the GA algorithm and the extreme-gradient decision-tree, which is the best performing regressor, together in a single optimization framework.

BIG-bench Machine Learning

Novel structural evolution of several nanolaminate Mn+1AXn (n=1, 2, 3, etc.) ceramics under pressure from first principles

no code implementations22 Dec 2020 Ben-Yang Li, Fang Chen, Heng-Na Xiong, Ling Tang, Ju-Xiang Shao, Ze-Jin Yang

We did extensive research for the typical nanolaminate Mn+1AXn (n=1, 2, 3) ceramics focusing on the structural stability, the phase transition pressure of Ti2GaN (160 GPa) is far higher than that of Zr2GaN (92 GPa), meaning the strong M dependence of the same group, whereas Zr2AlN (98 GPa) has similar value with that of Zr2GaN, meaning the weak A dependence.

Materials Science

Structured Context Enhancement Network for Mouse Pose Estimation

1 code implementation1 Dec 2020 Feixiang Zhou, Zheheng Jiang, Zhihua Liu, Fang Chen, Long Chen, Lei Tong, Zhile Yang, Haikuan Wang, Minrui Fei, Ling Li, Huiyu Zhou

However, quantifying mouse behaviours from videos or images remains a challenging problem, where pose estimation plays an important role in describing mouse behaviours.

Animal Pose Estimation

Deep-HOSeq: Deep Higher Order Sequence Fusion for Multimodal Sentiment Analysis

1 code implementation16 Oct 2020 Sunny Verma, Jiwei Wang, Zhefeng Ge, Rujia Shen, Fan Jin, Yang Wang, Fang Chen, Wei Liu

In this research, we first propose a common network to discover both intra-modal and inter-modal dynamics by utilizing basic LSTMs and tensor based convolution networks.

Multimodal Sentiment Analysis Sentiment Classification

Examination of Community Sentiment Dynamics due to COVID-19 Pandemic: A Case Study from A State in Australia

no code implementations22 Jun 2020 Jianlong Zhou, Shuiqiao Yang, Chun Xiao, Fang Chen

In this paper, we exploit the massive text data posted by Twitter users to analyse the sentiment dynamics of people living in the state of New South Wales (NSW) in Australia during the pandemic period.

Sentiment Analysis

Utilizing machine learning to prevent water main breaks by understanding pipeline failure drivers

no code implementations5 Jun 2020 Dilusha Weeraddana, Bin Liang, Zhidong Li, Yang Wang, Fang Chen, Livia Bonazzi, Dean Phillips, Nitin Saxena

Data61 and Western Water worked collaboratively to apply engineering expertise and Machine Learning tools to find a cost-effective solution to the pipe failure problem in the region west of Melbourne, where on average 400 water main failures occur per year.

BIG-bench Machine Learning

An improved online learning algorithm for general fuzzy min-max neural network

no code implementations8 Jan 2020 Thanh Tung Khuat, Fang Chen, Bogdan Gabrys

This paper proposes an improved version of the current online learning algorithm for a general fuzzy min-max neural network (GFMM) to tackle existing issues concerning expansion and contraction steps as well as the way of dealing with unseen data located on decision boundaries.

General Classification

Scalable Inference for Nonparametric Hawkes Process Using Pólya-Gamma Augmentation

no code implementations29 Oct 2019 Feng Zhou, Zhidong Li, Xuhui Fan, Yang Wang, Arcot Sowmya, Fang Chen

In this paper, we consider the sigmoid Gaussian Hawkes process model: the baseline intensity and triggering kernel of Hawkes process are both modeled as the sigmoid transformation of random trajectories drawn from Gaussian processes (GP).

Bayesian Inference Gaussian Processes +1

Efficient EM-Variational Inference for Hawkes Process

no code implementations29 May 2019 Feng Zhou, Zhidong Li, Xuhui Fan, Yang Wang, Arcot Sowmya, Fang Chen

In classical Hawkes process, the baseline intensity and triggering kernel are assumed to be a constant and parametric function respectively, which limits the model flexibility.

Variational Inference

An Effective Multi-Resolution Hierarchical Granular Representation based Classifier using General Fuzzy Min-Max Neural Network

1 code implementation29 May 2019 Thanh Tung Khuat, Fang Chen, Bogdan Gabrys

Motivated by the practical demands for simplification of data towards being consistent with human thinking and problem solving as well as tolerance of uncertainty, information granules are becoming important entities in data processing at different levels of data abstraction.

Graph-Based Decoding Model for Functional Alignment of Unaligned fMRI Data

no code implementations14 May 2019 Weida Li, Mingxia Liu, Fang Chen, Daoqiang Zhang

Aggregating multi-subject functional magnetic resonance imaging (fMRI) data is indispensable for generating valid and general inferences from patterns distributed across human brains.

valid

A Unified Neural Network Model for Geolocating Twitter Users

no code implementations CONLL 2018 Mohammad Ebrahimi, Elaheh ShafieiBavani, Raymond Wong, Fang Chen

Locations of social media users are important to many applications such as rapid disaster response, targeted advertisement, and news recommendation.

Disaster Response News Recommendation

AMC: Attention guided Multi-modal Correlation Learning for Image Search

2 code implementations CVPR 2017 Kan Chen, Trung Bui, Fang Chen, Zhaowen Wang, Ram Nevatia

According to the intent of query, attention mechanism can be introduced to adaptively balance the importance of different modalities.

Image Retrieval

Infinite Hidden Semi-Markov Modulated Interaction Point Process

no code implementations NeurIPS 2016 Matt Zhang, Peng Lin, Ting Guo, Yang Wang, Fang Chen

The proposed approach can simultaneously model both the observations and arrival times of temporal events, and determine the number of latent states from data.

State Space Models

Stochastic Patching Process

no code implementations23 May 2016 Xuhui Fan, Bin Li, Yi Wang, Yang Wang, Fang Chen

Due to constraints of partition strategy, existing models may cause unnecessary dissections in sparse regions when fitting data in dense regions.

On Improving Informativity and Grammaticality for Multi-Sentence Compression

no code implementations7 May 2016 Elaheh ShafieiBavani, Mohammad Ebrahimi, Raymond Wong, Fang Chen

In this paper, we propose an effective approach to enhance the word graph-based MSC and tackle the issue that most of the state-of-the-art MSC approaches are confronted with: i. e., improving both informativity and grammaticality at the same time.

Language Modeling Language Modelling +5

Stable Learning in Coding Space for Multi-Class Decoding and Its Extension for Multi-Class Hypothesis Transfer Learning

no code implementations CVPR 2014 Bang Zhang, Yi Wang, Yang Wang, Fang Chen

Many prevalent multi-class classification approaches can be unified and generalized by the output coding framework which usually consists of three phases: (1) coding, (2) learning binary classifiers, and (3) decoding.

General Classification Multi-class Classification +1

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