Past Projects


Health-related Misinformation Detection from Social Media Data using Deep Learning (2019 - 2023) AI for Social Good

This project focused on developing deep learning techniques to detect health-related misinformation on social media platforms, addressing the growing challenge of false information that impacts public health decisions. By leveraging advanced natural language processing and multimodal data analysis, we created models to identify and flag misleading content, contributing to safer online information ecosystems.

Broader Impacts

Our work has helped combat the spread of health misinformation, empowering communities with reliable information and supporting public health initiatives. This research underscores the potential of AI to serve as a tool for social good, particularly in mitigating the harmful effects of misinformation during public health crises.

Publications

Student advisees are marked with an asterisk (*).

Collaborators
  • Dr. Ming (Bryan) Wang (College of Journalism and Mass Communication, UNL)
  • Daisy Dai (Professor, Associate Dean of Research, COPH, UNMC)
  • Dr. Kelly Cawcutt (Division of Infectious Diseases and Pulmonary and Critical Care Medicine, University of Nebraska Medical Center)
Funding
In the News
  • Article on our misinformation detection research published in Nebraska Today.
Cezanne: A Novel Multi-Modal AI For Vision-Language Models (2022 - 2023)

The Cezanne project aimed to develop a groundbreaking multi-modal AI system to enhance the generalizability of vision-language models. Inspired by Paul Cezanne’s "lived perspective" in his still-life paintings, this approach integrated experiential and distorted visual representations with language models to better capture the solidity and presence of objects, improving model performance across diverse tasks.

Broader Impacts

By improving the generalizability of vision-language models, Cezanne has contributed to more robust AI systems capable of handling complex, real-world scenarios, with potential applications in education, assistive technologies, and creative industries, paving the way for more adaptive and context-aware AI.

Funding
  • Undergraduate Creative Activities and Research Experience (UCARE) fellowship, UNL
In the News
Generalizable Representations Leveraging Self-Supervised Learning (2020 - 2022) Computer Vision

This project explored self-supervised learning techniques to develop generalizable representations for computer vision tasks, aiming to reduce reliance on labeled data and improve model performance across diverse visual domains. Our approach enhanced the robustness of vision models, making them more adaptable to real-world applications.

Broader Impacts

By advancing self-supervised learning, this work has contributed to more efficient and scalable computer vision systems, with applications in fields like autonomous navigation, surveillance, and environmental monitoring, where labeled data is often scarce or expensive to obtain.

Publications

Student advisees are marked with an asterisk (*).

Generalizable Deep Learning Framework for Identifying Wild Animals from Camera-trap Images (2019 - 2022) Computer Vision

This project developed a generalizable deep learning framework to identify wild animals in camera-trap images, supporting wildlife conservation efforts. By addressing challenges like varying lighting, occlusion, and species diversity, our models improved the accuracy of automated wildlife monitoring, aiding researchers in tracking animal populations and behaviors.

Broader Impacts

Our framework has supported conservation efforts by providing reliable tools for monitoring wildlife, contributing to biodiversity preservation and informing ecological research. This work demonstrates the power of AI in addressing environmental challenges and promoting sustainable practices.

Publications

Student advisees are marked with an asterisk (*).

Collaborators
  • Dr. Andrew Little (School of Natural Resources, UNL)
  • Dr. Stephen Scott (School of Computing, UNL)
Funding
  • Undergraduate Creative Activities and Research Experience (UCARE) fellowship, UNL
In the News
  • Article on our camera-trap image recognition research published in Nebraska Today.
Machine Learning based Developer Expertise Prediction System in Software Engineering using Eye Movement Data (2019 - 2020) Software Engineering

This project utilized machine learning to predict developer expertise in software engineering by analyzing eye movement data, providing insights into cognitive processes during coding tasks. Our system identified patterns in visual attention to assess skill levels, offering a novel approach to understanding and improving developer performance.

Broader Impacts

By linking eye movement data to expertise, this research has informed the development of adaptive training tools and improved software engineering education, helping to bridge the gap between novice and expert developers and enhancing productivity in software development.

Collaborators
  • Dr. Bonita Sharif (School of Computing, UNL)
Convention Formation in Multi-Agent Systems (2014 - 2018)

This research explored convention formation in multi-agent systems through two sub-projects: "Fast Convention Formation in Large Networks" and "A Multiagent Solution to Overcome Selfish Routing in Transportation Networks." We developed algorithms to enable agents to quickly establish shared conventions in large-scale networks and proposed multi-agent solutions to optimize routing in transportation systems, reducing congestion and improving efficiency.

Broader Impacts

Our findings have advanced the understanding of coordination in multi-agent systems, with applications in distributed computing, transportation logistics, and social network analysis, contributing to more efficient and scalable systems in real-world scenarios.

Projects
  • Fast Convention Formation in Large Networks
  • A Multiagent Solution to Overcome Selfish Routing in Transportation Networks
Publications
Collaborators
  • Dr. Anita Raja (City University of New York)
  • Dr. Ana Bazzan (Universidade Federal do Rio Grande do Sul, Brazil)
Modeling Uncertainty and Its Implications in Complex Interdependent Networks (2014 - 2016)

This project investigated the modeling of uncertainty in complex interdependent networks, focusing on its implications for system reliability and decision-making. We developed frameworks to quantify and mitigate uncertainty, enhancing the robustness of networked systems in critical applications like infrastructure and cybersecurity.

Broader Impacts

By addressing uncertainty in interdependent networks, this research has improved the design of resilient systems, with applications in infrastructure management, cybersecurity, and disaster response, ensuring better preparedness and response to systemic failures.

Publications
Collaborators
  • Dr. Anita Raja (City University of New York)
  • Dr. Ansaf Salleb-Aouissi (Columbia University)
Funding
  • Office of Naval Research (ONR)