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In this paper we propose a novel macroscopic (fluid dynamics) model for describing pedestrian flow in low and high density regimes. The model is characterized by the fact that the maximal density reachable by the crowd - usually a fixed…

动力系统 · 数学 2025-04-03 Laura Bartoli , Simone Cacace , Emiliano Cristiani , Roberto Ferretti

The employment of nonlocal PDE models to describe biological aggregation and other phenomena has gained considerable traction in recent years. For cell populations, these methods grant a means of accommodating essential elements such as…

定量方法 · 定量生物学 2024-12-10 Kevin J Painter , Thomas Hillen , Jonathan R Potts

Differential equations are frequently used in engineering domains, such as modeling and control of industrial systems, where safety and performance guarantees are of paramount importance. Traditional physics-based modeling approaches…

系统与控制 · 电气工程与系统科学 2020-11-30 Aaron Tuor , Jan Drgona , Draguna Vrabie

This paper introduces a novel approach to probabilistic deep learning, kernel density matrices, which provide a simpler yet effective mechanism for representing joint probability distributions of both continuous and discrete random…

机器学习 · 计算机科学 2024-05-01 Fabio A. González , Raúl Ramos-Pollán , Joseph A. Gallego-Mejia

We introduce a new framework for training deep generative models for high-dimensional conditional density estimation. The Bottleneck Conditional Density Estimator (BCDE) is a variant of the conditional variational autoencoder (CVAE) that…

机器学习 · 统计学 2017-07-03 Rui Shu , Hung H. Bui , Mohammad Ghavamzadeh

In this paper we present an individual-based mechanical model that describes the dynamics of two contiguous cell populations with different proliferative and mechanical characteristics. An off-lattice modelling approach is considered…

偏微分方程分析 · 数学 2020-01-14 Tommaso Lorenzi , Philip J. Murray , Mariya Ptashnyk

The next generation wireless communication networks are required to support high-mobility scenarios, such as reliable data transmission for high-speed railways. Nevertheless, widely utilized multi-carrier modulation, the orthogonal…

信号处理 · 电气工程与系统科学 2024-03-22 Hengyu Zhang , Xuehan Wang , Jingbo Tan , Jintao Wang

Modeling the nonlinear dynamics of neuronal populations represents a key pursuit in computational neuroscience. Recent research has increasingly focused on jointly modeling neural activity and behavior to unravel their interconnections.…

神经与进化计算 · 计算机科学 2025-02-07 Zhengrui Guo , Fangxu Zhou , Wei Wu , Qichen Sun , Lishuang Feng , Jinzhuo Wang , Hao Chen

Neural operators have emerged as an efficient paradigm for solving PDEs, overcoming the limitations of traditional numerical methods and significantly improving computational efficiency. However, due to the diversity and complexity of PDE…

计算机视觉与模式识别 · 计算机科学 2026-02-26 Dengdi Sun , Xiaoya Zhou , Xiao Wang , Hao Si , Wanli Lyu , Jin Tang , Bin Luo

We propose a neural network model of multi-neuron interacting system that simulates neurons to interact each other through the surroundings of neuronal cell bodies. We physically model the neuronal cell surroundings, include the dendrites,…

神经元与认知 · 定量生物学 2021-07-05 Yu-Juan Sun , Wei-Min Zhang

This paper is concerned with the robustness of the sustained oscillations predicted by an epidemic ODE model defined on contact networks. The model incorporates the spread of awareness among individuals and, moreover, a small inflow of…

种群与进化 · 定量生物学 2020-11-11 David Juher , David Rojas , Joan Saldaña

In this paper we propose two numerical algorithms to solve a coupled PDE-ODE system which models a slow vehicle (bottleneck) moving on a road together with other cars. The resulting system is fully coupled because the dynamics of the slow…

In an aerial hybrid massive multiple-input multiple-output (MIMO) and orthogonal frequency division multiplexing (OFDM) system, how to design a spectral-efficient broadband multi-user hybrid beamforming with a limited pilot and feedback…

信号处理 · 电气工程与系统科学 2022-09-12 Zhen Gao , Minghui Wu , Chun Hu , Feifei Gao , Guanghui Wen , Dezhi Zheng , Jun Zhang

Continuous attractor networks (CANs) are widely used to model how the brain temporarily retains continuous behavioural variables via persistent recurrent activity, such as an animal's position in an environment. However, this memory…

神经与进化计算 · 计算机科学 2025-07-02 Madison Cotteret , Christopher J. Kymn , Hugh Greatorex , Martin Ziegler , Elisabetta Chicca , Friedrich T. Sommer

Continuous-depth neural networks can be viewed as deep limits of discrete neural networks whose dynamics resemble a discretization of an ordinary differential equation (ODE). Although important steps have been taken to realize the…

神经与进化计算 · 计算机科学 2020-12-09 François-Xavier Vialard , Roland Kwitt , Susan Wei , Marc Niethammer

Replicated network data are increasingly available in many research fields. In connectomic applications, inter-connections among brain regions are collected for each patient under study, motivating statistical models which can flexibly…

统计方法学 · 统计学 2018-09-11 Daniele Durante , David B. Dunson , Joshua T. Vogelstein

Populations are heterogeneous, deviating in numerous ways. Phenotypic diversity refers to the range of traits or characteristics across a population, where for cells this could be the levels of signalling, movement and growth activity, etc.…

细胞行为 · 定量生物学 2025-04-11 Tommaso Lorenzi , Kevin J Painter , Chiara Villa

Population-based learning paradigms, including evolutionary strategies, Population-Based Training (PBT), and recent model-merging methods, combine fast within-model optimisation with slower population-level adaptation. Despite their…

机器学习 · 计算机科学 2026-03-26 Giacomo Borghi , Hyesung Im , Lorenzo Pareschi

The propagation of traffic congestion along roads is a commonplace nonlinear phenomenon. When many roads are connected in a network, congestion can spill from one road to others as drivers queue to enter a congested road, creating further…

系统与控制 · 计算机科学 2019-06-18 Matthew A. Wright , Roberto Horowitz , Alex A. Kurzhanskiy

Embedding nonlinear dynamical systems into artificial neural networks is a powerful new formalism for machine learning. By parameterizing ordinary differential equations (ODEs) as neural network layers, these Neural ODEs are…

机器学习 · 计算机科学 2024-10-28 Mikko Lehtimäki , Lassi Paunonen , Marja-Leena Linne
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