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Synthetic Data Generation with Lorenzetti for Time Series Anomaly Detection in High-Energy Physics Calorimeters

Boggia, Laura, Malaescu, Bogdan

arXiv.org Artificial Intelligence

Anomaly detection in multivariate time series is crucial to ensure the quality of data coming from a physics experiment. Accurately identifying the moments when unexpected errors or defects occur is essential, yet challenging due to scarce labels, unknown anomaly types, and complex correlations across dimensions. To address the scarcity and unreliability of labelled data, we use the Lorenzetti Simulator to generate synthetic events with injected calorimeter anomalies. We then assess the sensitivity of several time series anomaly detection methods, including transformer-based and other deep learning models. The approach employed here is generic and applicable to different detector designs and defects.


Paraconsistent-Lib: an intuitive PAL2v algorithm Python Library

Junior, Arnaldo de Carvalho, da Cruz, Diego Oliveira, Alves, Bruno da Silva, Junior, Fernando da Silva Paulo, Filho, João Inacio da Silva

arXiv.org Artificial Intelligence

Abstract: This paper introduces Paraconsistent-Lib, an open-source, easy-to-use Python library for building P AL2v algorithms in reasoning and decision-making systems. Paraconsistent-Lib is designed as a general-purpose library of P AL2v standard calculations, presenting three types of results: paraconsistent analysis in one of the 12 classical lattice P AL2v regions, paraconsistent analysis node (P AN) outputs, and a decision output. With Paraconsistent-Lib, well-known P AL2v algorithms such as Para-analyzer, ParaExtrCTX, P AL2v Filter, paraconsistent analysis network (P ANnet), and paraconsistent neural network (PNN) can be written in stand-alone or network form, reducing complexity, code size, and bugs, as two examples presented in this paper. Given its stable state, Paraconsistent-Lib is an active development to respond to user-required features and enhancements received on GitHub.Keywords: Paraconsistent-Lib, P AL2v, Python Library, Reasoning, Decision-Making1. IntroductionThe desire to create an automaton capable of imitating human behavior is long-standing.


Beyond Awareness: Investigating How AI and Psychological Factors Shape Human Self-Confidence Calibration

Cau, Federico Maria, Spano, Lucio Davide

arXiv.org Artificial Intelligence

Human-AI collaboration outcomes depend strongly on human self-confidence calibration, which drives reliance or resistance toward AI's suggestions. This work presents two studies examining whether calibration of self-confidence before decision tasks, low versus high levels of Need for Cognition (NFC), and Actively Open-Minded Thinking (AOT), leads to differences in decision accuracy, self-confidence appropriateness during the tasks, and metacognitive perceptions (global and affective). The first study presents strategies to identify well-calibrated users, also comparing decision accuracy and the appropriateness of self-confidence across NFC and AOT levels. The second study investigates the effects of calibrated self-confidence in AI-assisted decision-making (no AI, two-stage AI, and personalized AI), also considering different NFC and AOT levels. Our results show the importance of human self-confidence calibration and psychological traits when designing AI-assisted decision systems. We further propose design recommendations to address the challenge of calibrating self-confidence and supporting tailored, user-centric AI that accounts for individual traits.


Enhancing low energy reconstruction and classification in KM3NeT/ORCA with transformers

Mateo, Iván Mozún

arXiv.org Artificial Intelligence

The current KM3NeT/ORCA neutrino telescope, still under construction, has not yet reached its full potential in neutrino reconstruction capability . When training any deep learning model, no explicit information about the physics or the detector is provided, thus they remain unknown to the model. This study leverages the strengths of transformers by incorporating attention masks inspired by the physics and detector design, making the model understand both the telescope design and the neutrino physics measured on it. The study also shows the efficacy of transformers on retaining valuable information between detectors when doing fine-tuning from one configurations to another .


Password Strength Analysis Through Social Network Data Exposure: A Combined Approach Relying on Data Reconstruction and Generative Models

Atzori, Maurizio, Calò, Eleonora, Caruccio, Loredana, Cirillo, Stefano, Polese, Giuseppe, Solimando, Giandomenico

arXiv.org Artificial Intelligence

Although passwords remain the primary defense against unauthorized access, users often tend to use passwords that are easy to remember. This behavior significantly increases security risks, also due to the fact that traditional password strength evaluation methods are often inadequate. In this discussion paper, we present SODA ADVANCE, a data reconstruction tool also designed to enhance evaluation processes related to the password strength. In particular, SODA ADVANCE integrates a specialized module aimed at evaluating password strength by leveraging publicly available data from multiple sources, including social media platforms. Moreover, we investigate the capabilities and risks associated with emerging Large Language Models (LLMs) in evaluating and generating passwords, respectively. Experimental assessments conducted with 100 real users demonstrate that LLMs can generate strong and personalized passwords possibly defined according to user profiles. Additionally, LLMs were shown to be effective in evaluating passwords, especially when they can take into account user profile data.



T-SAR: A Full-Stack Co-design for CPU-Only Ternary LLM Inference via In-Place SIMD ALU Reorganization

Oh, Hyunwoo, Nam, KyungIn, Bhattacharjya, Rajat, Chen, Hanning, Das, Tamoghno, Yun, Sanggeon, Jang, Suyeon, Ding, Andrew, Dutt, Nikil, Imani, Mohsen

arXiv.org Artificial Intelligence

Recent advances in LLMs have outpaced the computational and memory capacities of edge platforms that primarily employ CPUs, thereby challenging efficient and scalable deployment. While ternary quantization enables significant resource savings, existing CPU solutions rely heavily on memory-based lookup tables (LUTs) which limit scalability, and FPGA or GPU accelerators remain impractical for edge use. This paper presents T-SAR, the first framework to achieve scalable ternary LLM inference on CPUs by repurposing the SIMD register file for dynamic, in-register LUT generation with minimal hardware modifications. T-SAR eliminates memory bottlenecks and maximizes data-level parallelism, delivering 5.6-24.5x and 1.1-86.2x improvements in GEMM latency and GEMV throughput, respectively, with only 3.2% power and 1.4% area overheads in SIMD units. T-SAR achieves up to 2.5-4.9x the energy efficiency of an NVIDIA Jetson AGX Orin, establishing a practical approach for efficient LLM inference on edge platforms.