Publications

2025

1. Analysis of Graph-based Decoders for Quantum Low Density Parity Check Codes

   Kirsten Morris

   The University of Nebraska-Lincoln, 2025
2. Effect of redundancy on syndrome-based decoding for QLDPC codes

   Kirsten D. Morris, Tefjol Pllaha, and Christine A. Kelley

   In 2025 13th International Symposium on Topics in Coding (ISTC), 2025

   DOI
3. Supervised Dimension Reduction via Local Gradient Elongation

   Jannatul Ferdous Chhoa, Longxiu Huang, Anna Little, and 5 more authors

   2025

   Abs DOI

   We define a new local metric for labeled data, or features, which elongates the standard Euclidean distance in the direction of the label gradient, and explore its utility for supervised dimension reduction (SDR). In particular, we create supervised low-dimensional feature representations by embedding a gradient elongated geodesic distance. Experiments indicate that this procedure leads to faithful visualization of the underlying structure of the feature-label relationship, i.e., the active manifold, when other SDR methods fail. Furthermore, we propose a new method for prediction on unlabeled points, which extends Laplacian learning to leverage the gradient elongated geometry. Extensive numerical comparisons with classic and neural network-based methods indicate that such an approach outperforms other prediction methods when the number of labeled points is small. Finally, we validate the proposed methodology on several real-world datasets, including data on acute respiratory syndrome-coronavirus-2 and data on human stem cell differentiation.

2024

1. Absorbing Sets in Quantum LDPC Codes

   Kirsten D. Morris, Tefjol Pllaha, and Christine A. Kelley

   2024

2023

1. Investigating Parameter Trainability in the SNAP-Displacement Protocol of a Qudit System.

   Oluwadara Ogunkoya, Kirsten Morris, and Doga M Kurkcuoglu

   Physica Scripta, 2023
2. Analysis of Syndrome-Based Iterative Decoder Failure of QLDPC Codes

   Kirsten D. Morris, Tefjol Pllaha, and Christine A. Kelley

   In 2023 12th International Symposium on Topics in Coding (ISTC), 2023

   DOI

2017

1. Matrix completions for linear matrix equations

   Geoffrey Buhl, Elijah Cronk, Rosa Moreno, and 3 more authors

   Involve, a Journal of Mathematics, 2017