7 papers
Efficient Disruption of Criminal Networks through Multi-Objective Genetic Algorithms
Yehezkiel Darmadi, Thanh Thi Nguyen, Campbell Wilson
Criminal networks, such as the Sicilian Mafia, pose substantial threats to public safety, national security, and economic stability. Outdated disruption methods with a focus on rem…
Detection of Illicit Content on Online Marketplaces using Large Language Models
Quoc Khoa Tran, Thanh Thi Nguyen, Campbell Wilson
Online marketplaces, while revolutionizing global commerce, have inadvertently facilitated the proliferation of illicit activities, including drug trafficking, counterfeit sales, a…
Hate Speech Detection using Large Language Models with Data Augmentation and Feature Enhancement
Brian Jing Hong Nge, Stefan Su, Thanh Thi Nguyen +3
This paper evaluates data augmentation and feature enhancement techniques for hate speech detection, comparing traditional classifiers, e.g., Delta Term Frequency-Inverse Document…
Aligning Large Vision-Language Models by Deep Reinforcement Learning and Direct Preference Optimization
Thanh Thi Nguyen, Campbell Wilson, Janis Dalins
Large Vision-Language Models (LVLMs) or multimodal large language models represent a significant advancement in artificial intelligence, enabling systems to understand and generate…
Large Language Models for Detection of Life-Threatening Texts
Thanh Thi Nguyen, Campbell Wilson, Janis Dalins
Detecting life-threatening language is essential for safeguarding individuals in distress, promoting mental health and well-being, and preventing potential harm and loss of life. T…
Sensitive Image Classification by Vision Transformers
Hanxian He, Campbell Wilson, Thanh Thi Nguyen +1
When it comes to classifying child sexual abuse images, managing similar inter-class correlations and diverse intra-class correlations poses a significant challenge. Vision transfo…