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Computer vision based methods have been explored in the past for detection of railway track defects, but full automation has always been a challenge because both traditional image processing methods and deep learning classifiers trained…

Computer Vision and Pattern Recognition · Computer Science 2018-11-27 Shruti Mittal , Dattaraj Rao

Particle track reconstruction is the most computationally intensive process in nuclear physics experiments. Traditional algorithms use a combinatorial approach that exhaustively tests track measurements ("hits") to identify those that form…

Computer Vision and Pattern Recognition · Computer Science 2022-04-29 Polykarpos Thomadakis , Angelos Angelopoulos , Gagik Gavalian , Nikos Chrisochoides

Predicting human mobility is inherently challenging due to complex long-range dependencies and multi-scale periodic behaviors. To address this, we introduce RHYTHM (Reasoning with Hierarchical Temporal Tokenization for Human Mobility), a…

Machine Learning · Computer Science 2026-02-25 Haoyu He , Haozheng Luo , Yan Chen , Qi R. Wang

Recently, there has been significant interest in applying machine learning (ML) techniques to X-ray scattering experiments, which proves to be a valuable tool for enhancing research that involves large or rapidly generated datasets. ML…

Trajectory representation learning (TRL) maps trajectories to vectors that can be used for many downstream tasks. Existing TRL methods use either grid trajectories, capturing movement in free space, or road trajectories, capturing movement…

Machine Learning · Computer Science 2024-11-25 Silin Zhou , Shuo Shang , Lisi Chen , Peng Han , Christian S. Jensen

Railroad transportation plays a vital role in the future of sustainable mobility. Besides building new infrastructure, capacity can be improved by modern train control systems, e.g., based on moving blocks. At the same time, there is only…

Systems and Control · Electrical Eng. & Systems 2024-10-28 Stefan Engels , Robert Wille

Modern deep learning frameworks provide imperative, eager execution programming interfaces embedded in Python to provide a productive development experience. However, deep learning practitioners sometimes need to capture and transform…

Machine Learning · Computer Science 2022-03-08 James K. Reed , Zachary DeVito , Horace He , Ansley Ussery , Jason Ansel

Recent advancements in large multimodal models (LMMs) have leveraged extensive multimodal datasets to enhance capabilities in complex knowledge-driven tasks. However, persistent challenges in perceptual and reasoning errors limit their…

True-time-delay (TTD) lines are recently applied inside Terahertz (THz) hybrid-precoding transceiver to acquire high beamforming gain against beam squint effect. However, beam tracking turns into a challenging puzzle where enormous…

Information Theory · Computer Science 2024-10-28 Xu Shi , Jintao Wang , Jian Song

We present an efficient numerical approach for treating ballistic quantum transport across devices described by tight binding (TB) Hamiltonians designated to systems with localized potential defects. The method is based on the wave function…

Mesoscale and Nanoscale Physics · Physics 2016-09-08 K. Kolasiński , A. Mreńca-Kolasińska , B. Szafran

Phonon Boltzmann transport equation (BTE) is a key tool for modeling multiscale phonon transport, which is critical to the thermal management of miniaturized integrated circuits, but assumptions about the system temperatures (i.e., small…

Computational Physics · Physics 2022-01-14 Ruiyang Li , Jian-Xun Wang , Eungkyu Lee , Tengfei Luo

We present a fast and user friendly exoplanet transit light curve modelling package PyTransit, implementing optimised versions of the Gimen\'ez and the Mandel & Agol transit models. The package offers an object-oriented Python interface to…

Earth and Planetary Astrophysics · Physics 2015-04-29 Hannu Parviainen

I present RoadRunner, a fast exoplanet transit model that can use any radially symmetric function to model stellar limb darkening while still being faster to evaluate than the analytical transit model for quadratic limb darkening by Mandel…

Earth and Planetary Astrophysics · Physics 2020-09-24 Hannu Parviainen

A physics informed neural network (PINN) incorporates the physics of a system by satisfying its boundary value problem through a neural network's loss function. The PINN approach has shown great success in approximating the map between the…

Numerical Analysis · Mathematics 2022-03-17 Revanth Mattey , Susanta Ghosh

The railway industry is searching for new ways to automate a number of complex train functions, such as object detection, track discrimination, and accurate train positioning, which require the artificial perception of the railway…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Gianluca D'Amico , Mauro Marinoni , Federico Nesti , Giulio Rossolini , Giorgio Buttazzo , Salvatore Sabina , Gianluigi Lauro

Perception tasks play a crucial role in the development of automated operations and systems across multiple application fields. In the railway transportation domain, these tasks can improve the safety, reliability, and efficiency of various…

Robotics · Computer Science 2024-03-27 Gianluca D'Amico , Mauro Marinoni , Giorgio Buttazzo

We present version 2.1 of the public code {\sc precession}, a Python module for studying the post-Newtonian dynamics of precessing black hole binaries. In this release, we extend the code to handle eccentric orbits. This extension leverages…

General Relativity and Quantum Cosmology · Physics 2026-04-13 Giulia Fumagalli , Davide Gerosa , Nicholas Loutrel

This study presents a physics-informed neural network (PINN) framework for reactive transport modeling for simulating fast bimolecular reactions in porous media. Accurate characterization of chemical interactions and product formation in…

Numerical Analysis · Mathematics 2026-03-12 K. Adhikari , Md. Lal Mamud , M. K. Mudunuru , K. B. Nakshatrala

We present TRACE, an almost time-reversible hybrid integrator for the planetary N-body problem. Like hybrid symplectic integrators, TRACE can resolve close encounters between particles while retaining many of the accuracy and speed…

Earth and Planetary Astrophysics · Physics 2024-10-10 Tiger Lu , David M. Hernandez , Hanno Rein

This paper introduces a novel approach to solve inverse problems by leveraging deep learning techniques. The objective is to infer unknown parameters that govern a physical system based on observed data. We focus on scenarios where the…

Machine Learning · Computer Science 2023-10-02 Sidney Besnard , Frédéric Jurie , Jalal M. Fadili