Publications

Last updated: September 2026. ∗ indicates equal contribution.

You can also find my articles on my Google Scholar profile.

Benjamin Jarman, Lara Kassab, Deanna Needell, Alexander Sietsema. “Stochastic Iterative Methods for Online Rank Aggregation from Pairwise Comparisons”. BIT Numerical Mathematics, vol. 64, p. 26 (2024).
Rachel Domagalski, Sergi Elizalde, Jinting Liang, Quinn Minnich, Bruce E. Sagan, Jamie Schmidt, Alexander Sietsema. “Cyclic Pattern Containment and Avoidance”. Advances in Applied Mathematics, vol. 135, p. 102320 (2022).
Rachel Domagalski, Jinting Liang, Quinn Minnich, Bruce E. Sagan, Jamie Schmidt, Alexander Sietsema. “Pinnacle Set Properties”. Discrete Mathematics, vol. 345, iss. 7, p. 112882 (2022).
Rachel Domagalski, Jinting Liang, Quinn Minnich, Bruce E. Sagan, Jamie Schmidt, Alexander Sietsema. “Cyclic Shuffle Compatibility”. Séminaire Lotharingien de Combinatoire, vol. 85d (2021).

Alexander Sietsema, Deanna Needell, Yaniv Plan. “Binarization in low-rank approximation and non-negative matrix factorization”. To appear, Proc. 60th Asilomar Conf. on Signals, Systems and Computers (2026).
Alejandra Castillo, Jamie Haddock, Iryna Hartsock, Lara Kassab, Deanna Needell, Alexander Sietsema. “Geometry-aware Randomized Kaczmarz: fairer solutions on non-uniform geometries”. To appear, Proc. 60th Asilomar Conf. on Signals, Systems and Computers (2026).
Kedar Karhadkar*, Alexander Sietsema*, Deanna Needell, Guido Montúfar. “Harmful Overfitting in Sobolev Spaces”. Forty-Third International Conference on Machine Learning (ICML) (2026).
David R. Johnson, Alexander Sietsema, Rishabh Anand, Deanna Needell, Smita Krishnaswamy, Michael Perlmutter. “VDW-GNNs: Vector diffusion wavelets for geometric graph neural networks”. Forty-Third International Conference on Machine Learning (ICML) (2026).
Alexander Sietsema*, Zerrin Vural*, James Chapman, Yotam Yaniv, Deanna Needell. “Stratified Non-Negative Tensor Factorization”. Proc. 58th Asilomar Conf. on Signals, Systems and Computers, IEEE, pp. 260–264 (2024).
Alexander N. Sietsema, Michael T. McCann, Marc L. Klasky, Saiprasad Ravishankar. “Comparing One-step and Two-step Scatter Correction and Density Reconstruction in X-Ray CT”. 7th International Conference on Image Formation in X-Ray Computed Tomography, SPIE, vol. 12304, pp. 532–538 (2022).