Binh Vu

Prof. Dr. Binh Vu


Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
22 January 2025 in Electronics
Verified
Journal Article
Open access
PDF file
HHHayette hadjar
Hayette hadjar
BVBinh Vu
Binh Vu
MHMatthias Hemmje
Matthias Hemmje
Background: This paper presents TheraSense, a system developed within the Supporting Mental Health in Young People: Integrated Methodology for cLinical dEcisions and evidence (Smile) and Sensor Enabled Affective Computing for Enhancing Medical Care (SenseCare) projects. TheraSense is designed to enhance teleconsultation services by leveraging deep learning for real-time emotion recognition through facial expressions. It integrates with the Knowledge Management-Ecosystem Portal (SenseCare KM-EP) platform to provide mental health practitioners with valuable emotional insights during remote consultations. Method: We describe the conceptual design of TheraSense, including its use case contexts, architectural structure, and user interface layout. The system’s interoperability is discussed in detail, highlighting its seamless integration within the teleconsultation workflow. The evaluation methods include both quantitative assessments of the video-based emotion recognition system’s performance and qualitative feedback through heuristic evaluation and survey analysis. Results: The performance evaluation shows that TheraSense effectively recognizes emotions in video streams, with positive user feedback on its usability and integration. The system’s real-time emotion detection capabilities provide valuable support for mental health practitioners during remote sessions. Conclusions: TheraSense demonstrates its potential as an innovative tool for enhancing teleconsultation services. By providing real-time emotional insights, it supports better-informed decision-making in mental health care, making it an effective addition to remote telehealth platforms.

19 July 2025 in International Journal of Information Technology
Verified
Journal Article
Open access
PDF file
BVBinh Vu
Binh Vu
NKNidhi Keshri
Nidhi Keshri
SCSwati Chandna
Swati Chandna
MJMehrdad Jalali
Mehrdad Jalali
SMSina Mehraeen
Sina Mehraeen
Detecting emotions in dialogues faces challenges like context dependency and label imbalance. This paper presents a systematic methodology for fine-tuning pre-trained Transformer models on the Empathetic Dialogues benchmark to address these issues. Our methodology investigates and demonstrates significant performance improvements achieved by providing conversational context through utterance grouping, optimizing learning parameters via hyperparameter tuning, and mitigating label bias using class weighting. We perform a comparative study fine-tuning four pre-trained models, RoBERTa, DistilRoBERTa, DialoGPT, and T5, under this systematic framework. Results demonstrate that this combined approach significantly enhances performance. The best-performing configuration achieved 83% accuracy on an unseen test set for the benchmark’s 32 fine-grained emotion labels and 87% accuracy when predicting 6 broader emotion categories. These findings underscore the effectiveness of the proposed systematic approach in enhancing the accuracy and robustness of conversational emotion recognition models.

Verified
Journal Article
Open access
PDF file
Stefan WagenpfeilStefan Wagenpfeil
Stefan Wagenpfeil
BVBinh Vu
Binh Vu
PKPaul Mc Kevitt
Paul Mc Kevitt
MHMatthias Hemmje
Matthias Hemmje
The indexing and retrieval of multimedia content is generally implemented by employing feature graphs. These graphs typically contain a significant number of nodes and edges to reflect the level of detail in feature detection. A higher level of detail increases the effectiveness of the results, but also leads to more complex graph structures. However, graph traversal-based algorithms for similarity are quite inefficient and computationally expensive, especially for large data structures. To deliver fast and effective retrieval especially for large multimedia collections and multimedia big data, an efficient similarity algorithm for large graphs in particular is desirable. Hence, in this paper, we define a graph projection into a 2D space (Graph Code) and the corresponding algorithms for indexing and retrieval. We show that calculations in this space can be performed more efficiently than graph traversals due to the simpler processing model and the high level of parallelization. As a consequence, we demonstrate experimentally that the effectiveness of retrieval also increases substantially, as the Graph Code facilitates more levels of detail in feature fusion. These levels of detail also support an increased trust prediction, particularly for fused social media content. In our mathematical model, we define a metric triple for the Graph Code, which also enhances the ranked result representations. Thus, Graph Codes provide a significant increase in efficiency and effectiveness, especially for multimedia indexing and retrieval, and can be applied to images, videos, text and social media information.

30 September 2024 in Information
Verified
Journal Article
Open access
PDF file
AVAdrian Vogler
Adrian Vogler
BVBinh Vu
Binh Vu
MTMatthias Then
Matthias Then
MHMatthias Hemmje
Matthias Hemmje
This position paper presents a novel perspective on addressing the challenges of digital transformation in higher education through the development of a qualification-based learning model (QBLM) qualification management methodology. It argues that the rapid pace of technological advancement and the resulting need for continuous upskilling and reskilling necessitate a more dynamic and adaptive approach to human-resource management and development. The paper posits that by extending QBLM through the integration of artificial intelligence (AI) and machine learning (ML), a more effective system for analyzing competence requirements and designing personalized learning pathways can be created. The paper proposes a three-fold approach: (1) developing the FPHR ontology to support semantic annotation of HR qualifications in higher-education institutions (HEIs), (2) integrating this ontology into QBLM to ensure the machine-readability of qualifications, and (3) modeling a knowledge-based production process for HRs in skills-based learning. This paper outlines the current state of the art, presents conceptual models, and describes planned proof-of-concept implementations and evaluations. It contends that this approach will significantly enhance the effectiveness of human-resource development in the rapidly evolving digital knowledge society. By presenting this position, the paper aims to stimulate discussion and collaboration within the academic community on innovative approaches to qualification management in higher education. The work addresses critical issues arising from technological development and offers a forward-thinking solution to bridge the gap between current and future skill requirements in industry and academia.

7 July 2023 in Journal of Imaging
Verified
Journal Article
Open access
PDF file
SBSasha Behrouzi
Sasha Behrouzi
MDMarcel Dix
Marcel Dix
FKFatemeh Karampanah
Fatemeh Karampanah
AOates omer
ates omer
NSNissy Sasidharan
Nissy Sasidharan
BVBinh Vu
Binh Vu
Reliable functionality in anomaly detection in thermal image datasets is crucial for defect detection of industrial products. Nevertheless, achieving reliable functionality is challenging, especially when datasets are image sequences captured during equipment runtime with a smooth transition from healthy to defective images. This causes contamination of healthy training data with defective samples. Anomaly detection methods based on autoencoders are susceptible to a slight violation of a clean training dataset and lead to challenging threshold determination for sample classification. This paper indicates that combining anomaly scores leads to better threshold determination that effectively separates healthy and defective data. Our research results show that our approach helps to overcome these challenges. The autoencoder models in our research are trained with healthy images optimizing two loss functions: mean squared error (MSE) and structural similarity index measure (SSIM). Anomaly score outputs are used for classification. Three anomaly scores are applied: MSE, SSIM, and kernel density estimation (KDE). The proposed method is trained and tested on the 32 × 32-sized thermal images, including one contaminated dataset. The model achieved the following average accuracies across the datasets: MSE, 95.33%; SSIM, 88.37%; and KDE, 92.81%. Using a combination of anomaly scores could assist in solving a low classification accuracy. The use of KDE improves performance when healthy training data are contaminated. The MSE+ and SSIM+ methods, as well as two parameters to control quantitative anomaly localization using SSIM, are introduced.

21 February 2025 in Electronics
Verified
Journal Article
Open access
PDF file
HHHayette hadjar
Hayette hadjar
BVBinh Vu
Binh Vu
MHMatthias Hemmje
Matthias Hemmje
The T-Rehab System delivers a semi-immersive tele-rehabilitation experience by integrating Affective Computing (AC) through facial expression analysis and contactless heartbeat monitoring. T-Rehab closely monitors patients’ mental health as they engage in a personalized, semi-immersive Virtual Reality (VR) game on a desktop PC, using a webcam with MediaPipe to track their hand movements for interactive exercises, allowing the system to tailor treatment content for increased engagement and comfort. T-Rehab’s evaluation comprises two assessments: system performance and cognitive walkthroughs. The first evaluation focuses on system performance, assessing the tested game, middleware, and facial emotion monitoring to ensure hardware compatibility and effective support for AC, gaming, and tele-rehabilitation. The second evaluation uses cognitive walkthroughs to examine usability, identifying potential issues in emotion detection and tele-rehabilitation. Together, these evaluations provide insights into T-Rehab’s functionality, usability, and impact in supporting both physical rehabilitation and emotional well-being. The thorough integration of technology inside T-Rehab ensures a holistic approach to tele-rehabilitation, allowing patients to participate comfortably and efficiently from anywhere. This technique not only improves physical therapy outcomes but also promotes mental resilience, marking an important step advance in tele-rehabilitation practices.