activity
20212026
most citedWearable-based behaviour interpolation for semi-supervised human activity recognition

16 citations · 79 across the 25 of their papers we have counts for

collaborators

27 papers

cs.SD2026

GeoMER: A Joint Euclidean-Hyperbolic Geometry Framework for Multimodal Emotion Recognition

Ting Zhu, Huizhi Liang, Boguslaw Obara +2

Multimodal Emotion Recognition (MER) aims to understand human emotions by integrating information from multiple modalities such as speech and text. Psychological studies suggest th…

cs.LG2026

Personalized Federated Sparse Adaptation of Time-Series Foundation Models

Priyanka Nihalchandani, Naman Srivastava, Varun Ojha +1

Federated adaptation of time-series foundation models (TSFMs) is attractive for building energy forecasting because meter data are private, distributed, and highly non-IID. However…

cs.LG2026

Hyperbolic Manifold Constrained Tabular Neural Network

Tian Li, Lucy Robinson, Varun Ojha +1

Tabular prediction is central to a wide range of real-world applications. Tabular data typically contain heterogeneous features as well as rich and complex relational information t…

cs.LG2026

Systematic Characterization of Minimal Deep Learning Architectures: A Unified Analysis of Convergence, Pruning, and Quantization

Ziwei Zheng, Huizhi Liang, Vaclav Snasel +4

Deep learning networks excel at classification, yet identifying minimal architectures that reliably solve a task remains challenging. We present a computational methodology for sys…

cs.CV2025

AMap: Distilling Future Priors for Ahead-Aware Online HD Map Construction

Ruikai Li, Xinrun Li, Mengwei Xie +12

Online High-Definition (HD) map construction is pivotal for autonomous driving. While recent approaches leverage historical temporal fusion to improve performance, we identify a cr…

cs.CV2025

Learning Global Representation from Queries for Vectorized HD Map Construction

Shoumeng Qiu, Xinrun Li, Yang Long +3

The online construction of vectorized high-definition (HD) maps is a cornerstone of modern autonomous driving systems. State-of-the-art approaches, particularly those based on the…

cs.LG2025

RegMix: Adversarial Mutual and Generalization Regularization for Enhancing DNN Robustness

Zhenyu Liu, Varun Ojha

Adversarial training is the most effective defense against adversarial attacks. The effectiveness of the adversarial attacks has been on the design of its loss function and regular…

cs.CV2025

Deep Learning-Assisted Detection of Sarcopenia in Cross-Sectional Computed Tomography Imaging

Manish Bhardwaj, Huizhi Liang, Ashwin Sivaharan +4

Sarcopenia is a progressive loss of muscle mass and function linked to poor surgical outcomes such as prolonged hospital stays, impaired mobility, and increased mortality. Although…

cs.CV2025

AdaGAT: Adaptive Guidance Adversarial Training for the Robustness of Deep Neural Networks

Zhenyu Liu, Huizhi Liang, Xinrun Li +2

Adversarial distillation (AD) is a knowledge distillation technique that facilitates the transfer of robustness from teacher deep neural network (DNN) models to lightweight target…

cs.CV2025

D2R: dual regularization loss with collaborative adversarial generation for model robustness

Zhenyu Liu, Huizhi Liang, Rajiv Ranjan +3

The robustness of Deep Neural Network models is crucial for defending models against adversarial attacks. Recent defense methods have employed collaborative learning frameworks to…

cs.CV2025★ 15 cited

D2Fusion: Dual-domain Fusion with Feature Superposition for Deepfake Detection

Xueqi Qiu, Xingyu Miao, Fan Wan +5

Deepfake detection is crucial for curbing the harm it causes to society. However, current Deepfake detection methods fail to thoroughly explore artifact information across differen…

cs.CV2025★ 3 cited

3D Modeling and Automated Measurement of Concrete Cracks via Segment Anything Refinement and Visual Inertial LiDAR Fusion

Pengru Deng, Jiapeng Yao, Chun Li +4

Visual-Spatial Systems has become increasingly essential in concrete crack inspection. However, existing methods often lacks adaptability to diverse scenarios, exhibits limited rob…

cs.LG2024

Exemplar-condensed Federated Class-incremental Learning

Rui Sun, Yumin Zhang, Varun Ojha +4

We propose Exemplar-Condensed federated class-incremental learning (ECoral) to distil the training characteristics of real images from streaming data into informative rehearsal exe…

cs.LG2024

Dynamic Label Adversarial Training for Deep Learning Robustness Against Adversarial Attacks

Zhenyu Liu, Haoran Duan, Huizhi Liang +5

Adversarial training is one of the most effective methods for enhancing model robustness. Recent approaches incorporate adversarial distillation in adversarial training architectur…

cs.LG2024

On Learnable Parameters of Optimal and Suboptimal Deep Learning Models

Ziwei Zheng, Huizhi Liang, Vaclav Snasel +4

We scrutinize the structural and operational aspects of deep learning models, particularly focusing on the nuances of learnable parameters (weight) statistics, distribution, node i…

cs.CV2024★ 16 cited

Wearable-based behaviour interpolation for semi-supervised human activity recognition

Haoran Duan, Shidong Wang, Varun Ojha +5

While traditional feature engineering for Human Activity Recognition (HAR) involves a trial-anderror process, deep learning has emerged as a preferred method for high-level represe…

cs.CV2024

Dreamer XL: Towards High-Resolution Text-to-3D Generation via Trajectory Score Matching

Xingyu Miao, Haoran Duan, Varun Ojha +4

In this work, we propose a novel Trajectory Score Matching (TSM) method that aims to solve the pseudo ground truth inconsistency problem caused by the accumulated error in Interval…

cs.LG2024

Rehearsal-free Federated Domain-incremental Learning

Rui Sun, Haoran Duan, Jiahua Dong +3

We introduce a rehearsal-free federated domain incremental learning framework, RefFiL, based on a global prompt-sharing paradigm to alleviate catastrophic forgetting challenges in…

cs.CL2024★ 2 cited

Fine-tuning Large Language Models for Multigenerator, Multidomain, and Multilingual Machine-Generated Text Detection

Feng Xiong, Thanet Markchom, Ziwei Zheng +3

SemEval-2024 Task 8 introduces the challenge of identifying machine-generated texts from diverse Large Language Models (LLMs) in various languages and domains. The task comprises t…

cs.LG2023★ 6 cited

Fragility, Robustness and Antifragility in Deep Learning

Chandresh Pravin, Ivan Martino, Giuseppe Nicosia +1

We propose a systematic analysis of deep neural networks (DNNs) based on a signal processing technique for network parameter removal, in the form of synaptic filters that identifie…

math.OC2022★ 1 cited

Adaptive search space decomposition method for pre- and post- buckling analyses of space truss structures

Varun Ojha, Bartolomeo Panto, Giuseppe Nicosia

The paper proposes a novel adaptive search space decomposition method and a novel gradient-free optimization-based formulation for the pre- and post-buckling analyses of space trus…

cs.NE2022

Assessing Ranking and Effectiveness of Evolutionary Algorithm Hyperparameters Using Global Sensitivity Analysis Methodologies

Varun Ojha, Jon Timmis, Giuseppe Nicosia

We present a comprehensive global sensitivity analysis of two single-objective and two multi-objective state-of-the-art global optimization evolutionary algorithms as an algorithm…

cs.CV2022★ 14 cited

Transfer Learning for Instance Segmentation of Waste Bottles using Mask R-CNN Algorithm

Punitha Jaikumar, Remy Vandaele, Varun Ojha

This paper proposes a methodological approach with a transfer learning scheme for plastic waste bottle detection and instance segmentation using the \textit{mask region proposal co…

cs.LG2022

Backpropagation Neural Tree

Varun Ojha, Giuseppe Nicosia

We propose a novel algorithm called Backpropagation Neural Tree (BNeuralT), which is a stochastic computational dendritic tree. BNeuralT takes random repeated inputs through its le…