Overview
Numerical analysis, matrix theory, high-performance scientific computing, and parallel computing. Current Projects: Theory and algorithm development for large matrix computation problems arising in computational science and engineering.
Current Appointments & Affiliations
Professor of Computer Science
·
2009 - Present
Computer Science,
Trinity College of Arts & Sciences
Recent Publications
Algebraic Vertex Ordering of a Sparse Graph for Adjacency Access Locality and Graph Compression
Conference 2024 IEEE High Performance Extreme Computing Conference Hpec 2024 · January 1, 2024 In this work, we establish theoretical and practical connections between vertex indexing for sparse graph/network compression and matrix ordering for sparse matrix-vector multiplication and variable elimination. We present a fundamental analysis of adjacen ... Full text CiteParallel Clustering with Resolution Variation
Conference 2023 IEEE High Performance Extreme Computing Conference Hpec 2023 · January 1, 2023 We introduce a novel approach for parallel data clustering with resolution variation. Conventional graph clustering is typically governed by a function defined over all possible cluster configurations but at a fixed value of the resolution hyperparameter d ... Full text CiteCorrections to "iPhantom: A Framework for Automated Creation of Individualized Computational Phantoms and its Application to CT Organ Dosimetry".
Journal Article IEEE J Biomed Health Inform · January 2022 In [1], the dose estimation accuracy using the alternative baseline method under modulated tube current was not correctly calculated due to an unintentional simulation error. ... Full text Link to item CiteRecent Grants
Hybrid virtual-MRI/CBCT: A new paradigm for image guidance in liver SBRT
ResearchCo Investigator · Awarded by National Institutes of Health · 2019 - 2021A Limited-angle Intra-fractional Verification (LIVE) System for SBRT Treatments
ResearchCo Investigator · Awarded by National Institutes of Health · 2014 - 2020Collaborative Research: Integral Equation-Based Fast Algorithms and Graph-Theoretic Methods for Large-Scale Simulations
ResearchPrincipal Investigator · Awarded by National Science Foundation · 2009 - 2015View All Grants
Education, Training & Certifications
University of Maryland, College Park ·
1991
Ph.D.