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Showing 7347 results for "roberto visintainer" · Preprint
Engineering Preprint PDF DOI

Feedback Linearization of Hyperbolic PDEs with Volterra Nonlinearities

Miroslav Krstic · 2026

Alberto Isidori's framework of geometric nonlinear control, and particularly of feedback linearization, is the inspiration behind PDE backstepping: apply a transfromation of the state to cast the plan…

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AI & Data Science Preprint PDF DOI

LLMs Capture Emotion Labels, Not Emotion Uncertainty: Distributional Analysis and Calibration of Human--LLM Judgment Gaps

Keito Inoshita, Xiaokang Zhou, Akira Kawai, Katsutoshi Yada · 2026

Human annotators frequently disagree on emotion labels, yet most evaluations of Large Language Model (LLM) emotion annotation collapse these judgments into a single gold standard, discarding the distr…

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Physics Preprint PDF DOI

Fractional Cosmic String Loops In Expanding Universe

Pankaj Chaturvedi, Bikram Nath · 2026

We study the dynamics of circular cosmic string loops in a spatially flat Friedmann Lema\^itre Robertson Walker universe within a fractional Polyakov framework that incorporates nonlocal memory effect…

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AI & Data Science Preprint PDF DOI

Naamah: A Large Scale Synthetic Sanskrit NER Corpus via DBpedia Seeding and LLM Generation

Akhil Rajeev P, Annarao Kulkarni · 2026

The digitisation of classical Sanskrit literature is impeded by a scarcity of annotated resources, particularly for Named Entity Recognition. While recent methodologies utilise generic Large Language …

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AI & Data Science Preprint PDF DOI

SG-UniBuc-NLP at SemEval-2026 Task 6: Multi-Head RoBERTa with Chunking for Long-Context Evasion Detection

Gabriel Stefan, Sergiu Nisioi · 2026

We describe our system for SemEval-2026 Task 6 (CLARITY: Unmasking Political Question Evasions), which classifies English political interview responses by coarse-grained clarity (3-way) and fine-grain…

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Computer Science Preprint PDF DOI

Bug-Report-Driven Fault Localization: Industrial Benchmarking and Lesson Learned at ABB Robotics

Pernilla Hall, Anton Ununger, Riccardo Rubei, Alessio Bucaioni · 2026

Software quality assurance remains a major challenge in industrial environments, where large-scale and long-lived systems inevitably accumulate defects. Identifying the location of a fault is often ti…

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Mathematics Preprint PDF DOI

A finitary criterion for selfless tracial C*-algebras

Ali Jabbari · 2026

We study the class of selfless C*-probability spaces introduced by Robert. It is known that a selfless tracial algebra has strict comparison and a unique trace. We prove that for separable tracial C*-…

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Computer Science Preprint PDF DOI

#MakeBeefGreatAgain: A Cross-Platform Analysis of Early #MAHA Discourse

Haoning Xue, Yue Li, Benjamin A. Lyons, Andy J. King · 2026

Make America Healthy Again (MAHA) is a health-related campaign slogan proposed by Robert F. Kennedy Jr. and later incorporated into the political coalition of President Trump. While #MAHA quickly circ…

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Physics Preprint PDF DOI

Integrability of Conformal Killing Vectors in the Eisenhart Lift of Scalar-Field FLRW Cosmology

Takeshi Chiba, Tsuyoshi Houri · 2026

We study the integrability conditions of the conformal Killing equations for the Eisenhart lift of a scalar field in a flat Friedmann-Lema\^\i tre-Robertson-Walker universe. We show that the potential…

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Physics Preprint PDF DOI

Cosmological discrete self-similarity in primordial black hole formation

Luis E. Padilla, Tomohiro Harada, Ethan Milligan, David Mulryne · 2026

We demonstrate that discrete self-similarity (DSS), originally discovered in the collapse of a massless scalar field in an asymptotically flat system, survives in primordial black hole (PBH) formation…

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AI & Data Science Preprint PDF DOI

MKJ at SemEval-2026 Task 9: A Comparative Study of Generalist, Specialist, and Ensemble Strategies for Multilingual Polarization

Maziar Kianimoghadam Jouneghani · 2026

We present a systematic study of multilingual polarization detection across 22 languages for SemEval-2026 Task 9 (Subtask 1), contrasting multilingual generalists with language-specific specialists an…

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Mathematics Preprint PDF DOI

Doubly Saturated Ramsey Graphs: A Case Study in Computer-Assisted Mathematical Discovery

Benjamin Przybocki, John Mackey, Marijn J. H. Heule, Bernardo Subercaseaux · 2026

Ramsey-good graphs are graphs that contain neither a clique of size $s$ nor an independent set of size $t$. We study doubly saturated Ramsey-good graphs, defined as Ramsey-good graphs in which the add…

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AI & Data Science Preprint PDF DOI

Enhancing Science Classroom Discourse Analysis through Joint Multi-Task Learning for Reasoning-Component Classification

Jiho Noh, Mukhesh Raghava Katragadda, Raymond Carl, Soon Lee · 2026

Analyzing the reasoning patterns of students in science classrooms is critical for understanding knowledge construction mechanism and improving instructional practice to maximize cognitive engagement,…

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AI & Data Science Preprint PDF DOI

Scalable AI Inference: Performance Analysis and Optimization of AI Model Serving

Hung Cuong Pham, Fatih Gedikli · 2026

AI research often emphasizes model design and algorithmic performance, while deployment and inference remain comparatively underexplored despite being critical for real-world use. This study addresses…

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AI & Data Science Preprint PDF DOI

Physics-Guided Dimension Reduction for Simulation-Free Operator Learning of Stiff Differential-Algebraic Systems

Huy Hoang Le, Haoguang Wang, Christian Moya, Marcos Netto, Guang Lin · 2026

Neural surrogates for stiff differential-algebraic equations (DAEs) face two barriers: soft-constraint methods leave algebraic residuals that stiffness amplifies into errors, and hard-constraint metho…

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Physics Preprint PDF DOI

Thermodynamic behavior of cosmological models with fractional entropy

Miguel Cruz, Diego da Silva, Simon Gonzalez, Samuel Lepe, Joel Saavedra, Manuel Gonzalez-Espinoza · 2026

We investigate the thermodynamic and phenomenological implications of a cosmological model governed by fractional entropy applied to the apparent horizon of a flat Friedmann-Lema\^{i}tre-Robertson-Wal…

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AI & Data Science Preprint PDF DOI

Does Welsh media need a review? Detecting bias in Nation.Cymru's political reporting

Cai Parry-Jones · 2026

Wales' political landscape has been marked by growing accusations of bias in Welsh media. This paper takes the first computational step toward testing those claims by examining Nation.Cymru, a promine…

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AI & Data Science Preprint PDF DOI

When Informal Text Breaks NLI: Tokenization Failure, Distribution Shift, and Targeted Mitigations

Avinash Goutham Aluguvelly · 2026

We study how informal surface forms degrade NLI accuracy in ELECTRA-small (14M) and RoBERTa-large (355M) across four transforms applied to SNLI and MultiNLI: slang substitution, emoji replacement, Gen…

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Engineering Preprint PDF DOI

Physics-informed, Generative Adversarial Design of Funicular Shells

Ruben Lourenco, Iciar Alfaro, Beatriz Moya, Elias Cueto · 2026

Shell structures are pivotal in the fields of architecture and engineering, due to their aesthetic appeal and structural efficiency. Recently, 3D concrete printing has reignited the interest in these …

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Physics Preprint PDF DOI

Viable Cosmological Solutions from Hybrid Potentials

Koralia Tzanni, John Miritzis · 2026

We study flat Friedmann-Lema\^{\i}tre-Robertson-Walker (FLRW) models with a perfect fluid matter source and a scalar field minimally coupled to matter with power-law-exponential \textquotedblleft hybr…

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