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A powerful data transformation method named guided projections is proposed creating new possibilities to reveal the group structure of high-dimensional data in the presence of noise variables. Utilising projections onto a space spanned by a…

This paper introduces a data structure, called simplex tree, to represent abstract simplicial complexes of any dimension. All faces of the simplicial complex are explicitly stored in a trie whose nodes are in bijection with the faces of the…

Computational Geometry · Computer Science 2020-01-09 Jean-Daniel Boissonnat , Clément Maria

This mini-paper presents a fast and simple algorithm to compute the projection onto the canonical simplex $\triangle^n$. Utilizing the Moreau's identity, we show that the problem is essentially a univariate minimization and the objective…

Optimization and Control · Mathematics 2015-03-18 Yunmei Chen , Xiaojing Ye

Embedding high-dimensional data into a 2D canvas is a popular strategy for their visualization.

Graphics · Computer Science 2016-08-23 Shenghui Cheng , Pengcheng Cui , Klaus Mueller

Streaming data applications are becoming more common due to the ability of different information sources to continuously capture or produce data, such as sensors and social media. Despite recent advances, most visualization approaches, in…

Signal Processing · Electrical Eng. & Systems 2020-03-23 Tácito T. A. T. Neves , Rafael M. Martins , Danilo B. Coimbra , Kostiantyn Kucher , Andreas Kerren , Fernando V. Paulovich

High-dimensional compositional data, such as those from human microbiome studies, pose unique statistical challenges due to the simplex constraint and excess zeros. While dimension reduction is indispensable for analyzing such data,…

Methodology · Statistics 2025-09-09 Junyoung Park , Cheolwoo Park , Jeongyoun Ahn

Compositional data, also referred to as simplicial data, naturally arise in many scientific domains such as geochemistry, microbiology, and economics. In such domains, obtaining sensible lower-dimensional representations and modes of…

Single-image 3D shape reconstruction is an important and long-standing problem in computer vision. A plethora of existing works is constantly pushing the state-of-the-art performance in the deep learning era. However, there remains a much…

Computer Vision and Pattern Recognition · Computer Science 2021-04-23 Songfang Han , Jiayuan Gu , Kaichun Mo , Li Yi , Siyu Hu , Xuejin Chen , Hao Su

Humans learn abstract concepts through multisensory synergy, and once formed, such representations can often be recalled from a single modality. Inspired by this principle, we introduce Concerto, a minimalist simulation of human concept…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Yujia Zhang , Xiaoyang Wu , Yixing Lao , Chengyao Wang , Zhuotao Tian , Naiyan Wang , Hengshuang Zhao

LiDAR point cloud semantic segmentation is essential for interpreting 3D environments in applications such as autonomous driving and robotics. Recent methods achieve strong performance by exploiting different point cloud representations or…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Simone Mosco , Daniel Fusaro , Wanmeng Li , Emanuele Menegatti , Alberto Pretto

We introduce a fast and invertible approximation for data simulated as 2D planar meshes with connectivities along the poloidal dimension in deforming 3D toroidal (donut-like) spaces generated by fusion simulations. In fusion simulations,…

Graphics · Computer Science 2025-06-02 Congrong Ren , Hanqi Guo

Projections (or dimensionality reduction) methods $P$ aim to map high-dimensional data to typically 2D scatterplots for visual exploration. Inverse projection methods $P^{-1}$ aim to map this 2D space to the data space to support tasks such…

Human-Computer Interaction · Computer Science 2026-02-12 Yu Wang , Frederik L. Dennig , Michael Behrisch , Alexandru Telea

We describe MPSE: a Multi-Perspective Simultaneous Embedding method for visualizing high-dimensional data, based on multiple pairwise distances between the data points. Specifically, MPSE computes positions for the points in 3D and provides…

Data Structures and Algorithms · Computer Science 2020-08-07 Md Iqbal Hossain , Vahan Huroyan , Stephen Kobourov , Raymundo Navarrete

We propose a new system to visualize depth-dependent patterns and images on solid objects with complex geometry using multiple projectors. The system, despite consisting of conventional passive LCD projectors, is able to project different…

Computer Vision and Pattern Recognition · Computer Science 2016-09-13 Takuto Hirukawa , Marco Visentini-Scarzanella , Hiroshi Kawasaki , Ryo Furukawa , Shinsaku Hiura

We study the problem of novel view synthesis from sparse source observations of a scene comprised of 3D objects. We propose a simple yet effective approach that is neither continuous nor implicit, challenging recent trends on view…

Computer Vision and Pattern Recognition · Computer Science 2021-12-10 Pengsheng Guo , Miguel Angel Bautista , Alex Colburn , Liang Yang , Daniel Ulbricht , Joshua M. Susskind , Qi Shan

We propose an approach for dense semantic 3D reconstruction which uses a data term that is defined as potentials over viewing rays, combined with continuous surface area penalization. Our formulation is a convex relaxation which we augment…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Nikolay Savinov , Christian Haene , Lubor Ladicky , Marc Pollefeys

We present a new approach for fast and controllable generation of symbolic music based on the simplex diffusion, which is essentially a diffusion process operating on probabilities rather than the signal space. This objective has been…

Sound · Computer Science 2024-05-22 Nicolas Jonason , Luca Casini , Bob L. T. Sturm

Humans exhibit an innate capacity to rapidly perceive and segment objects from video observations, and even mentally assemble them into structured 3D scenes. Replicating such capability, termed compositional 3D reconstruction, is pivotal…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Mingyu Dong , Chong Xia , Mingyuan Jia , Weichen Lyu , Long Xu , Zheng Zhu , Yueqi Duan

Data visualization is the process by which data of any size or dimensionality is processed to produce an understandable set of data in a lower dimensionality, allowing it to be manipulated and understood more easily by people. The goal of…

Graphics · Computer Science 2021-07-06 Alexander Kiefer , Md. Khaledur Rahman

A recent paper on visualizing the sensitivity of hadronic experiments to nucleon structure [1] introduces the tool PDFSense which defines measures to allow the user to judge the sensitivity of PDF fits to a given experiment. The sensitivity…

High Energy Physics - Phenomenology · Physics 2018-10-17 Dianne Cook , Ursula Laa , German Valencia
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