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AI & Data Science Preprint PDF DOI

Improving Bias Correction Methods for Daily Rainfall Using a Markov Chain Approach

Danny Parsons, David Stern, Mouhamadou Bamba Sylla, James Musyoka, John Bagiliko, Lily Clements, John Mupuro, Denis Ndanguza · 2026

Accurate, localised rainfall information is essential for applications such as agricultural planning, climate risk assessment, and water resources management. Gridded climate products provide rainfall…

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Mathematics Preprint PDF DOI

Fixed points of orientation-preserving full transformation

Yang An, Wen Ting Zhang, Yi He · 2026

Let $\mathcal{OP}_n$ be the monoid of all orientation-preserving full transformations on $X_n=\{1,\dots, n\}$ with the natural order. For $\alpha \in \mathcal{OP}_n$, let $F(\alpha)=\{y\in X_n: y\alph…

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Physics Preprint PDF DOI

Thermal instability in coronal loops: linking eigenvalue spectra to time-dependent evolution

Adrian Kelly, Rony Keppens, Jordi De Jonghe · 2026

Cool, dense condensations such as coronal rain and prominences suggest that coronal plasma can undergo runaway radiative cooling. Connecting this behaviour to linear thermal modes requires us to fully…

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Mathematics Preprint PDF DOI

On optimization on ravine functions. Minkowski-Cohn moduli surface in Cohn parameterization

Nikolaj M. Glazunov · 2026

This paper presents a brief overview of ravine functions using the example of the Minkowski-Cohn moduli surface from the point of view of optimization on it. Elements of representation and solution of…

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Computer Science Preprint PDF DOI

Probabilistic Abduction in a Fuzzy Logic Framework

Tommaso Flaminio, Katsumi Inoue, Daniil Kozhemiachenko · 2026

We study the problem of explaining observations about the probabilities of events, such as "it rains $20\%$ of the time", "rain and snow are equally likely", etc. We explain these statements with a pr…

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AI & Data Science Preprint PDF DOI

Trust-SSL: Additive-Residual Selective Invariance for Robust Aerial Self-Supervised Learning

Wadii Boulila, Adel Ammar, Bilel Benjdira, Maha Driss · 2026

Self-supervised learning (SSL) is a standard approach for representation learning in aerial imagery. Existing methods enforce invariance between augmented views, which works well when augmentations pr…

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AI & Data Science Preprint PDF DOI

LoViF 2026 Challenge on Real-World All-in-One Image Restoration: Methods and Results

Xiang Chen, Hao Li, Jiangxin Dong, Jinshan Pan, Xin Li, Xin He, Naiwei Chen, Shengyuan Li, Fengning Liu, Haoyi Lv, Haowei Peng, Yilian Zhong, Yuxiang Chen, Shibo Yin, Yushun Fang, Xilei Zhu, Yahui Wang, Chen Lu, Kaibin Chen, Xu Zhang, Xuhui Cao, Jiaqi Ma, Ziqi Wang, Shengkai Hu, Yuning Cui, Huan Zhang, Shi Chen, Bin Ren, Lefei Zhang, Guanglu Dong, Qiyao Zhao, Tianheng Zheng, Chunlei Li, Lichao Mou, Chao Ren, Wangzhi Xing, Xin Lu, Enxuan Gu, Jingxi Zhang, Diqi Chen, Qiaosi Yi, Bingcai Wei, Mingyu Liu, Pengyu Wang, Ce Liu, Miaoxin Guan, Boyu Chen, Hongyu Li, Jian Zhu, Xinrui Luo, Ziyang He, Jiayu Wang, Yichen Xiang, Huayi Qi, Haoyu Bian, Yiran Li, Sunlichen Zhou · 2026

This paper presents a review for the LoViF Challenge on Real-World All-in-One Image Restoration. The challenge aimed to advance research on real-world all-in-one image restoration under diverse real-w…

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AI & Data Science Preprint PDF DOI

Localization-Guided Foreground Augmentation in Autonomous Driving

Jiawei Yong, Deyuan Qu, Qi Chen, Kentaro Oguchi, Shintaro Fukushima · 2026

Autonomous driving systems often degrade under adverse visibility conditions-such as rain, nighttime, or snow-where online scene geometry (e.g., lane dividers, road boundaries, and pedestrian crossing…

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Mathematics Preprint PDF DOI

A primality test for $Kp^\ell - 1$ numbers

Anuj Jakhar, Mahesh Kumar Ram · 2026

We develop an algebraic framework over arbitrary quadratic fields $L = \mathbb{Q}(\sqrt{D})$ to generalize the Miller-Rabin primality test. Consequently, we present a deterministic primality test for …

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AI & Data Science Preprint PDF DOI

Style-Based Neural Architectures for Real-Time Weather Classification

Hamed Ouattara, Pascal Houssam Salmane, Pierre Duthon, Frederic Bernardin, Omar Ait Aider · 2026

In this paper, we present three neural network architectures designed for real-time classification of weather conditions (sunny, rain, snow, fog) from images. These models, inspired by recent advances…

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Engineering Preprint PDF DOI

A Novel Piecewise Atmospheric Attenuation Model for Free Space Optical Links in Vertical Heterogeneous Networks

Eylem Erdogan, Mohammed Elamassie, Ibrahim Altunbas, Gunes Karabulut Kurt, Murat Uysal, Halim Yanikomeroglu · 2026

Free-space optical (FSO) communication is emerging as a key backhaul technology for next-generation vertical heterogeneous networks (VHetNets), whose architecture spans satellites, high-altitude platf…

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Computer Science Preprint PDF DOI

RAVEN: Retrieval-Augmented Vulnerability Exploration Network for Memory Corruption Analysis in User Code and Binary Programs

Parteek Jamwal, Minghao Shao, Boyuan Chen, Achyuta Muthuvelan, Asini Subanya, Boubacar Ballo, Kashish Satija, Mariam Shafey, Mohamed Mahmoud, Moncif Dahaji Bouffi, Pasindu Wickramasinghe, Siyona Goel, Yaakulya Sabbani, Hakim Hacid, Mthandazo Ndhlovu, Eleanna Kafeza, Sanjay Rawat, Muhammad Shafique · 2026

Large Language Models (LLMs) have demonstrated remarkable capabilities across various cybersecurity tasks, including vulnerability classification, detection, and patching. However, their potential in …

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Computer Science Preprint PDF DOI

Raven: Rethinking Automated Assessment for Scratch Programs via Video-Grounded Evaluation

Donglin Li, Daming Li, Hanyuan Shi, Jialu Zhang · 2026

Block-based programming environments such as Scratch are widely used in introductory computing education, yet scalable and reliable automated assessment remains elusive. Scratch programs are highly he…

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AI & Data Science Preprint PDF DOI

DIRCR: Dual-Inference Rule-Contrastive Reasoning for Solving RAVENs

Jiachen Zhang, Chengtai Li, Jianfeng Ren, Linlin Shen, Zheng Lu, Ruibin Bai · 2026

Abstract visual reasoning remains challenging as existing methods often prioritize either global context or local row-wise relations, failing to integrate both, and lack intermediate feature constrain…

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Mathematics Preprint PDF DOI

A fractional De Giorgi isoperimetric type inequality

Matteo Cozzi, Tomas Sanz-Perela · 2026

We establish an isoperimetric type inequality for the level sets of functions in fractional Sobolev spaces. This answers a question posed by the first author in a previous paper. To obtain it, we work…

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AI & Data Science Preprint PDF DOI

Stylistic-STORM (ST-STORM) : Perceiving the Semantic Nature of Appearance

Hamed Ouattara, Pierre Duthon, Pascal Houssam Salmane, Frederic Bernardin, Omar Ait Aider · 2026

One of the dominant paradigms in self-supervised learning (SSL), illustrated by MoCo or DINO, aims to produce robust representations by capturing features that are insensitive to certain image transfo…

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Physics Preprint PDF DOI

Rain-Attenuation Peak Frequency in the Terahertz Band

Yuheng Song, Wanzhu Chang, Kefeng Huang, Kaixin Sun, Chen Yao, Jianjun Ma · 2026

Rain introduces broadband and frequency-selective attenuation in wideband terahertz (THz) links, making it necessary to identify a compact spectral descriptor that captures how the dominant loss regio…

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Mathematics Preprint PDF DOI

Positive and negative 3-energies of graphs

Zhengbo Chen, Zhouningxin Wang, Xiao-Dong Zhang · 2026

For a simple graph $G$ with $n$ vertices, let $A_G$ denote the adjacency matrix of $G$, and let $\lambda_1(G) \geq \lambda_2(G) \geq \dots \geq \lambda_n(G)$ be its eigenvalues. For an integer $p \geq…

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AI & Data Science Preprint PDF DOI

Heuristic Style Transfer for Real-Time, Efficient Weather Attribute Detection

Hamed Ouattara, Pierre Duthon, Pascal Houssam Salmane, Frederic Bernardin, Omar Ait Aider · 2026

We present lightweight and efficient architectures to detect weather conditions from RGB images, predicting the weather type (sunny, rain, snow, fog) and 11 complementary attributes such as intensity,…

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Mathematics Preprint PDF DOI

A short proof of near-linear convergence of adaptive gradient descent under fourth-order growth and convexity

Damek Davis, Dmitriy Drusvyatskiy · 2026

Davis, Drusvyatskiy, and Jiang showed that gradient descent with an adaptive stepsize converges locally at a nearly-linear rate for smooth functions that grow at least quartically away from their mini…

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