no code implementations • 17 Dec 2024 • Tiankai Xie, Jiaqing Chen, Yaoqing Yang, Caleb Geniesse, Ge Shi, Ajinkya Chaudhari, John Kevin Cava, Michael W. Mahoney, Talita Perciano, Gunther H. Weber, Ross Maciejewski
Modern machine learning often relies on optimizing a neural network's parameters using a loss function to learn complex features.
no code implementations • 19 Nov 2024 • Caleb Geniesse, Jiaqing Chen, Tiankai Xie, Ge Shi, Yaoqing Yang, Dmitriy Morozov, Talita Perciano, Michael W. Mahoney, Ross Maciejewski, Gunther H. Weber
After describing this new topological landscape profile representation, we show how the shape of loss landscapes can reveal new details about model performance and learning dynamics, highlighting several use cases, including image segmentation (e. g., UNet) and scientific machine learning (e. g., physics-informed neural networks).
no code implementations • 14 Nov 2024 • Tiankai Xie, Caleb Geniesse, Jiaqing Chen, Yaoqing Yang, Dmitriy Morozov, Michael W. Mahoney, Ross Maciejewski, Gunther H. Weber
Characterizing the loss of a neural network with respect to model parameters, i. e., the loss landscape, can provide valuable insights into properties of that model.
no code implementations • 3 Aug 2024 • Hong Guan, Yancheng Wang, Lulu Xie, Soham Nag, Rajeev Goel, Niranjan Erappa Narayana Swamy, Yingzhen Yang, Chaowei Xiao, Jonathan Prisby, Ross Maciejewski, Jia Zou
Effective fraud detection and analysis of government-issued identity documents, such as passports, driver's licenses, and identity cards, are essential in thwarting identity theft and bolstering security on online platforms.
1 code implementation • 24 Oct 2023 • Jian Kang, Yinglong Xia, Ross Maciejewski, Jiebo Luo, Hanghang Tong
We study deceptive fairness attacks on graphs to answer the following question: How can we achieve poisoning attacks on a graph learning model to exacerbate the bias deceptively?
1 code implementation • 25 Aug 2023 • Fan Lei, Yuxin Ma, Stewart Fotheringham, Elizabeth Mack, ZiQi Li, Mehak Sachdeva, Sarah Bardin, Ross Maciejewski
As analysts create their spatial models, our framework flags potential issues with model parameter selections, utilizes template-based text generation to summarize model outputs, and links with external knowledge repositories to provide annotations that help to explain the model results.
no code implementations • 10 Jul 2023 • Dongqi Fu, Wenxuan Bao, Ross Maciejewski, Hanghang Tong, Jingrui He
We systematically review related works from the data to the computational aspects.
no code implementations • 30 Jun 2022 • Dongqi Fu, Jingrui He, Hanghang Tong, Ross Maciejewski
Directly motivated by security-related applications from the Homeland Security Enterprise, we focus on the privacy-preserving analysis of graph data, which provides the crucial capacity to represent rich attributes and relationships.
1 code implementation • 9 Mar 2022 • Dongqi Fu, Yikun Ban, Hanghang Tong, Ross Maciejewski, Jingrui He
Disinformation refers to false information deliberately spread to influence the general public, and the negative impact of disinformation on society can be observed in numerous issues, such as political agendas and manipulating financial markets.
1 code implementation • 28 Nov 2021 • John Kevin Cava, John Vant, Nicholas Ho, Ankita Shukla, Pavan Turaga, Ross Maciejewski, Abhishek Singharoy
In this paper, we utilized generative models, and reformulate it for problems in molecular dynamics (MD) simulation, by introducing an MD potential energy component to our generative model.
no code implementations • 26 Oct 2021 • Lecheng Zheng, Dongqi Fu, Ross Maciejewski, Jingrui He
However, two major problems hinder the deeper GNNs to obtain satisfactory performance, i. e., vanishing gradient and over-smoothing.
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no code implementations • 29 Sep 2021 • Dongqi Fu, Liri Fang, Ross Maciejewski, Vetle I Torvik, Jingrui He
Graph metric learning methods aim to learn the distance metric over graphs such that similar graphs are closer and dissimilar graphs are farther apart.
no code implementations • 24 May 2021 • Jian Kang, Tiankai Xie, Xintao Wu, Ross Maciejewski, Hanghang Tong
The vast majority of the existing works on group fairness, with a few exceptions, primarily focus on debiasing with respect to a single sensitive attribute, despite the fact that the co-existence of multiple sensitive attributes (e. g., gender, race, marital status, etc.)
1 code implementation • 15 Sep 2020 • Yuxin Ma, Arlen Fan, Jingrui He, Arun Reddy Nelakurthi, Ross Maciejewski
Transfer Learning is intended to relax this assumption by modeling relationships between domains, and is often applied in deep learning applications to reduce the demand for labeled data and training time.
no code implementations • 28 Jul 2020 • Weikai Yang, Zhen Li, Mengchen Liu, Yafeng Lu, Kelei Cao, Ross Maciejewski, Shixia Liu
Concept drift is a phenomenon in which the distribution of a data stream changes over time in unforeseen ways, causing prediction models built on historical data to become inaccurate.
1 code implementation • 17 Jul 2019 • Yuxin Ma, Tiankai Xie, Jundong Li, Ross Maciejewski
Machine learning models are currently being deployed in a variety of real-world applications where model predictions are used to make decisions about healthcare, bank loans, and numerous other critical tasks.