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Alexandros-Stavros Iliopoulos

Ph.D., Department of Computer Science
Duke University

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Journal articles

A. Dubey*, A.S. Iliopoulos*, X. Sun, F.F. Yin, and L. Ren. "Iterative inversion of deformation vector fields with feedback control." Medical Physics, 45(7):3147–3160, 2018. (*Co-first authors.) (paper; 25MB)

Conference proceedings

A. Dubey, A.S. Iliopoulos, and X. Sun. "Incisive DVF inversion via bi-residual feedback." 16th Copper Mountain Conference on Iterative Methods, Copper Mountain, CO, USA, 2020. (Accepted.)

N. Pitsianis, A.S. Iliopoulos, D. Floros, and X. Sun. "Spaceland embedding of sparse stochastic graphs." IEEE High Performance Extreme Computing Conference, Waltham, MA, USA, 2019. (paper; 5.7MB) (slides; 15MB) (website)

A.S. Iliopoulos, J. Hu, N. Pitsianis, X. Sun, M. Gehm, and D. Brady. "Big snapshot stitching with scarce overlap." IEEE High Performance Extreme Computing Conference, Waltham, MA, USA, 2013. (paper; 9.6MB) (slides; 165MB) (slides; 19MB)

Software releases

N. Pitsianis, D. Floros, A.S. Iliopoulos, and X. Sun. "SG-t-SNE-Π: Swift neighbor embedding of sparse stochastic graphs." Journal of Open Source Software, 4(39):1577, 2019. (website) (GitHub)

A.S. Iliopoulos, A. Dubey, X. Sun. "idvf: Iterative inversion of deformation vector field with adaptive bi-residual feedback control." Journal of Open Source Software, 4(35):1076, 2019. (GitHub)

Theses

A.S. Iliopoulos. All-Near-Neighbor Search Among High-Dimensional Data via Hierarchical Sparse Graph Code Filtering. Ph.D. dissertation, Department of Computer Science, Duke University, Durham, NC, USA, 2020.

A.S. Iliopoulos. AutoGPU: Automatic generation of optimized CUDA kernel code. Diploma thesis, Department of Electrical & Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece, 2011. (english; 14MB) (greek; 14MB)

Oral presentations

A. Dubey, A.S. Iliopoulos, X. Sun, F.F. Yin, and L. Ren. "Iterative inversion of deformation vector fields with feedback control." Medical Physics, 44(6), 2017.

D. Floros, A.S. Iliopoulos, N. Pitsianis, X. Sun, F.F. Yin, and L. Ren. "Adaptive medical image denoising over multiple anatomical regions with edge and texture preservation." Medical Physics, 44(6), 2017. (slides; 2.8 MB)

A.S. Iliopoulos, D. Floros, N. Pitsianis, X. Sun, F.F. Yin, and L. Ren. "Local statistical filtering via domain dissection for medical imaging." GPU Technology Conference, San Jose, CA, USA, 2016.

D. Floros, A.S. Iliopoulos, N. Pitsianis, and X. Sun. "Windowed all-kNN search over multidimensional array data from medical imaging." GPU Technology Conference, San Jose, CA, USA, 2016.

A.S. Iliopoulos, Y. Zhang, N. Pitsianis, X. Sun, F.F Yin, and L. Ren. "Multi-layer spectral analysis for tensor structure encoding of 4D deformation field data." Medical Physics 42(6):3669, 2015. (slides; 28MB)

A.S. Iliopoulos, N. Pitsianis, X. Sun, F.F Yin, and L. Ren. "Rapid projection computations for on-board digital tomosynthesis in radiation therapy." Medical Physics 42(6):3658, 2015. (slides; 3MB)

A.S. Iliopoulos, N. Pitsianis, X. Sun, F.F. Yin, and L. Ren. "Fast digital tomosynthesis for LIVE radiation therapy." GPU Technology Conference, San Jose, CA, USA, 2015. (slides; 6MB)

A.S. Iliopoulos, N. Pitsianis, X. Sun, F.F. Yin, and L. Ren. "Recomposable ray projectors for digital tomosynthesis." 6th Panhellenic Conference on Biomedical Technology, Athens, Greece, 2015.

X. Xu, A.S. Iliopoulos, Y. Zhang, N. Pitsianis, X. Sun, F.F Yin, and L. Ren. "Towards real-time on-board volumetric image reconstruction for intrafraction target verification in radiation therapy," Medical Physics 41(6):118, 2014.

A.S. Iliopoulos, J. Hu, N. Pitsianis, X. Sun, M. Gehm, and D. Brady. "De-ghosting for gigapixel snapshot processing." GPU Technology Conference, San Jose, CA, USA, 2013. (slides; 162MB) (slides; 17MB)

Invited talks

"Sparse and structured embeddings in matrix algebra: analysis & applications." East Coast Computer Algebra Day, Durham, NC, USA, 2014.

"Big snapshot stitching with scarce overlap." Visualization Friday Forum, Duke University, Durham, NC, USA, 2013. (slides; 167MB)

Posters

D. Floros, A.S. Iliopoulos, N. Pitsianis, and X. Sun. "Multi-level data translocation for faster processing of scattered data on shared-memory computers." COLOC: 3rd Workshop on Data Locality at Euro-Par, Göttingen, Germany, 2019. (poster; 5.1MB)

N. Sismanis, A.S. Iliopoulos, R. Yokota, N. Pitsianis, and X. Sun. "Sakura: Recursive construction and traversal of FMM skeleton." Workshop on Mathematical Foundations for Fast Multi-Resolution Interactions and Large Data Analysis, Durham, NC, USA, 2015. (poster; 1MB)

A.S. Iliopoulos, N. Pitsianis, X. Sun, F.F. Yin, and L. Ren. "Fast deformation imaging from limited-angle projections in radiation therapy." Duke Research Computing Symposium, Duke University, Durham, NC, USA, 2015. (poster; 1MB)

A.S. Iliopoulos, N. Pitsianis, X. Sun, and R.D. Pearlstein. "Spinal neuron localization and matrix embeddings." Duke Research Computing Symposium, Duke University, Durham, NC, USA, 2015.