Search Results for author: Donald Loveland

Found 10 papers, 2 papers with code

Network Design through Graph Neural Networks: Identifying Challenges and Improving Performance

no code implementations26 Oct 2023 Donald Loveland, Rajmonda Caceres

However, the factors which govern gradient-based editing are understudied, obscuring why edges are chosen and if edits are grounded in an edge's importance.

On Performance Discrepancies Across Local Homophily Levels in Graph Neural Networks

no code implementations8 Jun 2023 Donald Loveland, Jiong Zhu, Mark Heimann, Benjamin Fish, Michael T. Schaub, Danai Koutra

We ground the practical implications of this work through granular analysis on five real-world datasets with varying global homophily levels, demonstrating that (a) GNNs can fail to generalize to test nodes that deviate from the global homophily of a graph, and (b) high local homophily does not necessarily confer high performance for a node.

Node Classification

On Graph Neural Network Fairness in the Presence of Heterophilous Neighborhoods

no code implementations10 Jul 2022 Donald Loveland, Jiong Zhu, Mark Heimann, Ben Fish, Michael T. Schaub, Danai Koutra

We study the task of node classification for graph neural networks (GNNs) and establish a connection between group fairness, as measured by statistical parity and equal opportunity, and local assortativity, i. e., the tendency of linked nodes to have similar attributes.

Attribute Fairness +1

Zeroth-Order SciML: Non-intrusive Integration of Scientific Software with Deep Learning

no code implementations4 Jun 2022 Ioannis Tsaknakis, Bhavya Kailkhura, Sijia Liu, Donald Loveland, James Diffenderfer, Anna Maria Hiszpanski, Mingyi Hong

Existing knowledge integration approaches are limited to using differentiable knowledge source to be compatible with first-order DL training paradigm.

FairEdit: Preserving Fairness in Graph Neural Networks through Greedy Graph Editing

1 code implementation10 Jan 2022 Donald Loveland, Jiayi Pan, Aaresh Farrokh Bhathena, Yiyang Lu

While edge deletion is a common method used to promote fairness in GNNs, it fails to consider when data is inherently missing fair connections.

Fairness Graph Representation Learning

Reliable Graph Neural Network Explanations Through Adversarial Training

no code implementations25 Jun 2021 Donald Loveland, Shusen Liu, Bhavya Kailkhura, Anna Hiszpanski, Yong Han

Graph neural network (GNN) explanations have largely been facilitated through post-hoc introspection.

How does Heterophily Impact the Robustness of Graph Neural Networks? Theoretical Connections and Practical Implications

1 code implementation14 Jun 2021 Jiong Zhu, Junchen Jin, Donald Loveland, Michael T. Schaub, Danai Koutra

We bridge two research directions on graph neural networks (GNNs), by formalizing the relation between heterophily of node labels (i. e., connected nodes tend to have dissimilar labels) and the robustness of GNNs to adversarial attacks.

Explainable Deep Learning for Uncovering Actionable Scientific Insights for Materials Discovery and Design

no code implementations16 Jul 2020 Shusen Liu, Bhavya Kailkhura, Jize Zhang, Anna M. Hiszpanski, Emily Robertson, Donald Loveland, T. Yong-Jin Han

The scientific community has been increasingly interested in harnessing the power of deep learning to solve various domain challenges.

Actionable Attribution Maps for Scientific Machine Learning

no code implementations30 Jun 2020 Shusen Liu, Bhavya Kailkhura, Jize Zhang, Anna M. Hiszpanski, Emily Robertson, Donald Loveland, T. Yong-Jin Han

The scientific community has been increasingly interested in harnessing the power of deep learning to solve various domain challenges.

BIG-bench Machine Learning

Generative Counterfactual Introspection for Explainable Deep Learning

no code implementations6 Jul 2019 Shusen Liu, Bhavya Kailkhura, Donald Loveland, Yong Han

In this work, we propose an introspection technique for deep neural networks that relies on a generative model to instigate salient editing of the input image for model interpretation.

counterfactual

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