中文
相关论文

相关论文: An efficient jet marcher for computing the quasipo…

200 篇论文

The Energy Mover's Distance (EMD) has seen use in collider physics as a metric between events and as a geometric method of defining infrared and collinear safe observables. Recently, the Spectral Energy Mover's Distance (SEMD) has been…

高能物理 - 唯象学 · 物理学 2025-01-14 Rikab Gambhir , Andrew J. Larkoski , Jesse Thaler

We present a path planning framework that takes into account the human's safety perception in the presence of a flying robot. The framework addresses two objectives: (i) estimation of the uncertain parameters of the proposed safety…

机器人学 · 计算机科学 2019-03-14 Hyung-Jin Yoon , Christopher Widdowson , Thiago Marinho , Ranxiao Frances Wang , Naira Hovakimyan

In this paper we present a novel probabilistic sampling-based motion planning algorithm called the Fast Marching Tree algorithm (FMT*). The algorithm is specifically aimed at solving complex motion planning problems in high-dimensional…

机器人学 · 计算机科学 2015-02-09 Lucas Janson , Edward Schmerling , Ashley Clark , Marco Pavone

We present a new empirical pseudopotential (EPM) calculation approach to simulate the million atom nanostructured semiconductor devices under potential bias using the periodic boundary conditions. To treat the non-equilibrium condition,…

介观与纳米尺度物理 · 物理学 2015-05-20 Xiang-Wei Jiang , Shu-Shen Li , Jian-Bai Xia , Lin-Wang Wang

Regime shifts in high-dimensional time series arise naturally in many applications, from neuroimaging to finance. This problem has received considerable attention in low-dimensional settings, with both Bayesian and frequentist methods used…

统计方法学 · 统计学 2025-09-05 Xiudi Li , Abolfazl Safikhani , Ali Shojaie

We present a method for pursuit/evasion that is highly efficient and and scales to large teams of aircraft. The underlying algorithm is an efficient algorithm for solving Markov Decision Processes (MDPs) that supports fully continuous state…

人工智能 · 计算机科学 2019-09-11 Joshua R. Bertram , Peng Wei

The ground state energy of a many-electron system can be approximated by an variational approach in which the total energy of the system is minimized with respect to one and two-body reduced density matrices (RDM) instead of many-electron…

最优化与控制 · 数学 2017-09-01 Yongfeng Li , Zaiwen Wen , Chao Yang , Yaxiang Yuan

We consider the joint design and control of discrete-time stochastic dynamical systems over a finite time horizon. We formulate the problem as a multi-step optimization problem under uncertainty seeking to identify a system design and a…

机器学习 · 计算机科学 2022-01-07 Adrien Bolland , Ioannis Boukas , Mathias Berger , Damien Ernst

Online state-time trajectory planning in highly dynamic environments remains an unsolved problem due to the unpredictable motions of moving obstacles and the curse of dimensionality from the state-time space. Existing state-time planners…

机器人学 · 计算机科学 2020-10-30 Delong Zhu , Tong Zhou , Jiahui Lin , Yuqi Fang , Max Q. -H. Meng

The interdiction of escaping adversaries in urban networks is a critical security challenge. State-of-the-art game-theoretic models, such as the Escape Interdiction Game (EIG), provide comprehensive frameworks but assume a highly dynamic…

数据结构与算法 · 计算机科学 2025-10-07 Sukanya Samanta , Manohar Reddy

Uncertain dynamic obstacles, such as pedestrians or vehicles, pose a major challenge for optimal robot navigation with safety guarantees. Previous work on motion planning has followed two main strategies to provide a safe bound on an…

Current state-of-the-art model-based reinforcement learning algorithms use trajectory sampling methods, such as the Cross-Entropy Method (CEM), for planning in continuous control settings. These zeroth-order optimizers require sampling a…

机器学习 · 计算机科学 2021-12-16 Kevin Huang , Sahin Lale , Ugo Rosolia , Yuanyuan Shi , Anima Anandkumar

Although with progress in introducing auxiliary amortized inference models, learning discrete latent variable models is still challenging. In this paper, we show that the annoying difficulty of obtaining reliable stochastic gradients for…

机器学习 · 统计学 2020-05-29 Zhijian Ou , Yunfu Song

We address a challenge of active flow control: the optimization of many actuation parameters guaranteeing fast convergence and avoiding suboptimal local minima. This challenge is addressed by a new optimizer, called explorative gradient…

流体动力学 · 物理学 2020-11-02 Yiqing Li , Wenshi Cui , Qing Jia , Qiliang Li , Zhigang Yang , Marek Morzyński , Bernd R. Noack

I describe a class of iterative jet algorithms that are based on maximizing a fixed function of the total 4-momentum rather than clustering of pairs of jets. I describe some of the properties of the simplest examples of this class,…

高能物理 - 唯象学 · 物理学 2014-09-02 Howard Georgi

The Energy Conserving Descent (ECD) algorithm was recently proposed (De Luca & Silverstein, 2022) as a global non-convex optimization method. Unlike gradient descent, appropriately configured ECD dynamics escape strict local minima and…

量子物理 · 物理学 2026-04-15 Yihang Sun , Huaijin Wang , Patrick Hayden , Jose Blanchet

In this work, we propose a method to efficiently compute smooth, time-optimal trajectories for micro aerial vehicles (MAVs) evading a moving obstacle. Our approach first computes an n-dimensional trajectory from the start- to an arbitrary…

机器人学 · 计算机科学 2019-08-07 Marius Beul , Sven Behnke

We propose semidefinite trajectory optimization (STROM), a framework that computes fast and certifiably optimal solutions for nonconvex trajectory optimization problems defined by polynomial objectives and constraints. STROM employs sparse…

最优化与控制 · 数学 2024-09-04 Shucheng Kang , Xiaoyang Xu , Jay Sarva , Ling Liang , Heng Yang

In this paper, we propose a variant of Riemannian stochastic recursive gradient method that can achieve second-order convergence guarantee and escape saddle points using simple perturbation. The idea is to perturb the iterates when gradient…

最优化与控制 · 数学 2020-10-30 Andi Han , Junbin Gao

We develop a family of compact high-order semi-Lagrangian label-setting methods for solving the eikonal equation. These solvers march the total 1-jet of the eikonal, and use Hermite interpolation to approximate the eikonal and parametrize…

数值分析 · 数学 2021-08-25 Samuel F. Potter , Maria K. Cameron