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Implicit neural representations (INR) suffer from worsening spectral bias, which results in overly smooth solutions to the inverse problem. To deal with this problem, we propose a universal framework for processing inverse problems called…

机器学习 · 计算机科学 2024-04-24 Yang Chen , Ruituo Wu , Yipeng Liu , Ce Zhu

Many positional encodings (PEs) are designed to exhibit long-term decay, based on an entrenched and long-standing inductive opinion: tokens farther away from the current position carry less relevant information. We argue that long-term…

计算与语言 · 计算机科学 2024-12-06 Yuhan Chen , Ang Lv , Jian Luan , Bin Wang , Wei Liu

The Hopf insulator is a weak topological insulator characterized by an insulating bulk with conducting edge states protected by an integer-valued linking number invariant. The state exists in three-dimensional two-band models. We…

Guaranteeing that Fr\'echet means of object populations do not locally self-intersect or are thereby affected is a serious challenge for object representations because the objects' shape space typically includes elements corresponding to…

统计方法学 · 统计学 2025-01-03 Mohsen Taheri , Stephen M. Pizer , Jörn Schulz

Ellipsometry is a powerful and well-established optical technique used in the characterisation of materials. It works by combining the components of elliptically polarized light in order to draw information about the optical system. We…

光学 · 物理学 2018-03-15 Manoel P. Araújo , Stefano De Leo , Gabriel G. Maia

We show that arbitrarily high-order exceptional points (EPs) can be achieved in a repulsively interacting two-species Bose gas in one dimension. By exactly solving the non-Hermitian two-boson problem, we demonstrate the existence of…

量子气体 · 物理学 2019-01-23 Lei Pan , Shu Chen , Xiaoling Cui

Graphs depict pairwise relationships between objects within a system. Higher-order interactions (HOIs), which involve more than two objects simultaneously, are common in nature. Such interactions can change the stability of a complex…

物理与社会 · 物理学 2025-02-17 Mateusz Iskrzyński , Aleksandra Puchalska , Aleksandra Grzelik , Gökhan Mutlu

In this paper, we propose a unified algorithmic framework for solving many known variants of \mds. Our algorithm is a simple iterative scheme with guaranteed convergence, and is \emph{modular}; by changing the internals of a single…

机器学习 · 计算机科学 2010-03-31 Arvind Agarwal , Jeff M. Phillips , Suresh Venkatasubramanian

We present GRAPE (Group Representational Position Encoding), a unified framework for positional encoding based on group actions. GRAPE unifies two families of mechanisms: (i) multiplicative rotations (Multiplicative GRAPE) in…

机器学习 · 计算机科学 2026-05-15 Yifan Zhang , Zixiang Chen , Yifeng Liu , Zhen Qin , Huizhuo Yuan , Kangping Xu , Yang Yuan , Quanquan Gu , Andrew Chi-Chih Yao

The puckered lattice geometry, along with $p$-orbitals is often overlooked in the study of topological physics. Here, we investigate the higher-order topology of the $p_{x,y}$-orbital bands in acoustic metamaterials using a simplified…

介观与纳米尺度物理 · 物理学 2024-05-13 Bing-Quan Wu , Zhi-Kang Lin , Li-Wei Wang , Jian-Hua Jiang

It is possible to construct representations of the Lorentz group using four-dimensional harmonic oscillators. This allows us to construct three-dimensional wave functions with the usual rotational symmetry for space-like coordinates and…

数学物理 · 物理学 2007-05-23 Y. S. Kim

Existing light field representations, such as epipolar plane image (EPI) and sub-aperture images, do not consider the structural characteristics across the views, so they usually require additional disparity and spatial structure cues for…

图像与视频处理 · 电气工程与系统科学 2022-04-04 Yaning Li , Xue Wang , Hao Zhu , Guoqing Zhou , Qing Wang

We study geodesics on hypersurfaces close to the standard (n-1)-dimensional sphere in n-dimensional Euclidean space. Following Poincar\'e, we treat the problem within the framework of the analytical mechanics, and employ the perturbation…

数学物理 · 物理学 2011-08-18 D. O. Sinitsyn

We use the extrapolate dictionary to revisit the spectrum of operators in Celestial CFT. Under the Celestial CFT map, each state in the 4D Hilbert space should map to one in the 2D Hilbert space. This implies that, beyond the familiar…

高能物理 - 理论 · 物理学 2025-01-03 Justin Kulp , Sabrina Pasterski

The Su-Schrieffer-Heeger (SSH) system is a popular model for exploring topological insulators and topological phases in one dimension. Recent interest in exceptional points has led to re-examination of non-Hermitian generalizations of many…

We develop a system for modeling hand-object interactions in 3D from RGB images that show a hand which is holding a novel object from a known category. We design a Convolutional Neural Network (CNN) for Hand-held Object Pose and Shape…

计算机视觉与模式识别 · 计算机科学 2019-11-12 Mia Kokic , Danica Kragic , Jeannette Bohg

In this work, an explicit formula is deduced for identifying the orbital angular moment (OAM) of vectorial vortex with space-variant state of polarization (SOP). Different to scalar vortex, the OAM of vectorial vortex can be attributed to…

光学 · 物理学 2018-10-30 Dengke Zhang , Xue Feng , Kaiyu Cui , Fang Liu , Yidong Huang

3D Panoptic Occupancy Prediction aims to reconstruct a dense volumetric scene map by predicting the semantic class and instance identity of every occupied region in 3D space. Achieving such fine-grained 3D understanding requires precise…

计算机视觉与模式识别 · 计算机科学 2025-12-24 Jong Wook Kim , Wonseok Roh , Ha Dam Baek , Pilhyeon Lee , Jonghyun Choi , Sangpil Kim

We propose a multiscale approach for an elliptic multiscale setting with general unstructured diffusion coefficients that is able to achieve high-order convergence rates with respect to the mesh parameter and the polynomial degree. The…

数值分析 · 数学 2020-09-03 Roland Maier

In this work, we present a collection of three-dimensional higher-order symmetry protected topological phases (HOSPTs) with gapless hinge modes that exist only in strongly interacting systems subject to subsystem symmetry constraints. We…

强关联电子 · 物理学 2022-06-29 Julian May-Mann , Yizhi You , Taylor L. Hughes , Zhen Bi