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Showing 74 results for "hamza elhamdadi"
AI & Data Science Preprint PDF DOI

HAMSA: Scanning-Free Vision State Space Models via SpectralPulseNet

Badri N. Patro, Vijay S. Agneeswaran · 2026

Vision State Space Models (SSMs) like Vim, VMamba, and SiMBA rely on complex scanning strategies to adapt sequential SSMs to process 2D images, introducing computational overhead and architectural com…

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AI & Data Science Preprint PDF DOI

Bayesian sparse principal coordinates analysis with delta-tolerant linear approximation for microbiome data

Hsin-Hsiung Huang, Ruitao Liu, Liangliang Zhang, Shao-Hsuan Wang · 2026

Principal coordinates analysis (PCoA) is a standard exploratory tool for microbiome beta-diversity studies, but its axes are defined by pairwise dissimilarities and therefore do not directly identify …

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Physics Preprint PDF DOI

Characterisation of rough-wall drag in compressible turbulent boundary layers

Dea Daniella Wangsawijaya, Rio Baidya, Sven Scharnowski, Bharath Ganapathisubramani, Christian Kahler · 2026

In compressible turbulent boundary layers (TBLs), roughness drag is typically characterised by first applying a velocity transformation to account for compressibility, after which the momentum deficit…

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Mathematics Preprint PDF DOI

A note on a very abstract chromatic number and extremal problems

Daniel Gerbner · 2026

The abstract chromatic number was introduced by Razborov and Coregliano in 2020 in using the language of model theory, and was used to extend the Erd\H os-Stone-Simonovits theorem to graphs with extra…

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Mathematics Preprint PDF DOI

On medial Latin quandles and affine modules

Luc Ta · 2026

In this note, we show that the category of Latin (resp. commutative) medial quandles is equivalent to the category of affine modules over a certain Laurent polynomial ring (resp. the dyadic rationals)…

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AI & Data Science Preprint PDF DOI

ChEmREF: Evaluating Language Model Readiness for Chemical Emergency Response

Risha Surana, Qinyuan Ye, Swabha Swayamdipta · 2025

Emergency responders managing hazardous material HAZMAT incidents face critical, time-sensitive decisions, manually navigating extensive chemical guidelines. We investigate whether today's language mo…

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AI & Data Science Preprint PDF DOI

HAMSA: Hijacking Aligned Compact Models via Stealthy Automation

Alexey Krylov, Iskander Vagizov, Dmitrii Korzh, Maryam Douiba, Azidine Guezzaz, Vladimir Kokh, Sergey D. Erokhin, Elena V. Tutubalina, Oleg Y. Rogov · 2025

Large Language Models (LLMs), especially their compact efficiency-oriented variants, remain susceptible to jailbreak attacks that can elicit harmful outputs despite extensive alignment efforts. Existi…

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Physics Preprint PDF DOI

Constraining light dark matter in vector-scalar portals with COSI and AMEGO-X

Maira Dutra, Clarissa Siqueira, Tonia M. Venters · 2025

Detecting gamma-ray signals that could be due to dark matter (DM) particles would give us invaluable information about the nature of DM. In particular, gamma-ray lines could provide a way to measure t…

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Physics Preprint PDF DOI

Quantum States with Maximal Magic

Gianluca Cuffaro, Christopher A. Fuchs · 2024

Finding ways to quantify magic is an important problem in quantum information theory. Recently Leone, Oliviero and Hamma introduced a class of magic measures for qubits, the stabilizer entropies of or…

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Mathematics Preprint PDF DOI

Dynamics of quandle orders

Chihaya Jibiki · 2024

We construct a continuous map from the space of orders on quandles to the space of quandle actions on one-manifolds, providing an answer to a question posed by Idrissa Ba and Mohamed Elhamdadi. As an …

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Mathematics Preprint PDF DOI

Gr\"uss inequalities for the $\beta-$integral associated with the general quantum operator

J. L. Cardoso, N. Haque, A. Macedo · 2024

Assume that $\,I\subseteq\mathbb{R}\,$ is an interval and $\,\beta:\,I\rightarrow\,I\,$ a strictly increasing and continuous function with a single fixed point $\,s_0\in I\,$, satisfying $\,(s_0-t)(\b…

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Mathematics Preprint PDF DOI

Rack Representations and Connections with groups representations

Jose Gregorio Rodriguez-Nieto, Olga Patricia Salazar-Diaz, Ricardo Esteban Vallejos-Cifuentes, Raul Velasquez · 2024

In this paper we study some algebraic properties of the rack structure as well as the representation theory of it, following the ideas given by M. Elhamdadi and E. M. Moutuou in \cite{Elhamdadi}. We e…

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Physics Preprint PDF DOI

Hyperoptimized approximate contraction of tensor networks for rugged-energy-landscape spin glasses on periodic square and cubic lattices

Adil A. Gangat, Johnnie Gray · 2024

Obtaining the low-energy configurations of spin glasses that have rugged energy landscapes is of direct relevance to combinatorial optimization and fundamental science. Search-based heuristics have di…

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AI & Data Science Preprint PDF DOI

Hamba: Single-view 3D Hand Reconstruction with Graph-guided Bi-Scanning Mamba

Haoye Dong, Aviral Chharia, Wenbo Gou, Francisco Vicente Carrasco, Fernando De la Torre · 2024

3D Hand reconstruction from a single RGB image is challenging due to the articulated motion, self-occlusion, and interaction with objects. Existing SOTA methods employ attention-based transformers to …

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AI & Data Science Preprint PDF DOI

SeSame: Simple, Easy 3D Object Detection with Point-Wise Semantics

Hayeon O, Chanuk Yang, Kunsoo Huh · 2024

In autonomous driving, 3D object detection provides more precise information for downstream tasks, including path planning and motion estimation, compared to 2D object detection. In this paper, we pro…

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AI & Data Science Preprint PDF DOI

Nabra: Syrian Arabic Dialects with Morphological Annotations

Amal Nayouf, Tymaa Hammouda, Mustafa Jarrar, Fadi Zaraket, Mohamad-Bassam Kurdy · 2023

This paper presents Nabra, a corpora of Syrian Arabic dialects with morphological annotations. A team of Syrian natives collected more than 6K sentences containing about 60K words from several sources…

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Physics Preprint PDF DOI

Targeted computation of nonlocal closure operators via an adjoint-based macroscopic forcing method

Jessie Liu, Florian Schafer, Spencer H. Bryngelson, Tamer A. Zaki, Ali Mani · 2023

Reynolds-averaged Navier--Stokes (RANS) closure must be sensitive to the flow physics, including nonlocality and anisotropy of the effective eddy viscosity. Recent approaches used forced direct numeri…

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Physics Preprint PDF DOI

Fast Macroscopic Forcing Method

Spencer H. Bryngelson, Florian Schafer, Jessie Liu, Ali Mani · 2023

The macroscopic forcing method (MFM) of Mani and Park and similar methods for obtaining turbulence closure operators, such as the Green's function-based approach of Hamba, recover reduced solution ope…

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Computer Science Preprint PDF DOI

Benchmarking scalability of stream processing frameworks deployed as microservices in the cloud

Soren Henning, Wilhelm Hasselbring · 2023

Context: The combination of distributed stream processing with microservice architectures is an emerging pattern for building data-intensive software systems. In such systems, stream processing framew…

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AI & Data Science Preprint PDF DOI

Ensemble Learning using Transformers and Convolutional Networks for Masked Face Recognition

Mohammed R. Al-Sinan, Aseel F. Haneef, Hamzah Luqman · 2022

Wearing a face mask is one of the adjustments we had to follow to reduce the spread of the coronavirus. Having our faces covered by masks constantly has driven the need to understand and investigate h…

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