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- research-articleFebruary 2024
Stacking: A novel data-driven ensemble machine learning strategy for prediction and mapping of Pb-Zn prospectivity in Varcheh district, west Iran
Expert Systems with Applications: An International Journal (EXWA), Volume 237, Issue PChttps://doi.org/10.1016/j.eswa.2023.121668AbstractVarious ensemble machine learning techniques have been widely studied and implemented to construct the predictive models in different sciences, including bagging, boosting, and stacking. However, bagging and boosting concentrate on minimizing ...
- research-articleNovember 2023
Accelerating Particle and Fluid Simulations with Differentiable Graph Networks for Solving Forward and Inverse Problems
SC-W '23: Proceedings of the SC '23 Workshops of The International Conference on High Performance Computing, Network, Storage, and AnalysisPages 60–65https://doi.org/10.1145/3624062.3626082We leverage physics-embedded differentiable graph network simulators (GNS) to accelerate particulate and fluid simulations to solve forward and inverse problems. GNS represents the domain as a graph with particles as nodes and learned interactions as ...
- research-articleJuly 2023
A conservation law consistent updated Lagrangian material point method for dynamic analysis
- Giuliano Pretti,
- William M. Coombs,
- Charles E. Augarde,
- Bradley Sims,
- Marc Marchena Puigvert,
- José Antonio Reyna Gutiérrez
Journal of Computational Physics (JOCP), Volume 485, Issue Chttps://doi.org/10.1016/j.jcp.2023.112075AbstractThe Material Point Method (MPM) is well suited to modelling dynamic solid mechanics problems undergoing large deformations with non-linear, history dependent material behaviour. However, the vast majority of existing material point ...
Graphical abstract Highlights- First energy conserving, updated Lagrangian Material Point Method for solid dynamics.
- research-articleJanuary 2023
FPGA-based point processing for denoising of the show-through effect in scanned document images
Journal of King Saud University - Computer and Information Sciences (JKSUCIS), Volume 35, Issue 1Pages 296–309https://doi.org/10.1016/j.jksuci.2022.12.001AbstractDocument Image Binarization is one of the image enhancement techniques and has potential applications in the field of Document Image Analysis and Recognition (DIAR). During the DIAR process, different types of noise such as uneven ...
- invited-talkJuly 2022
Boss Baby: Foamy Business
SIGGRAPH '22: ACM SIGGRAPH 2022 TalksArticle No.: 30, Pages 1–2https://doi.org/10.1145/3532836.3536243In a world run by babies, the most potent weapon from The Boss Baby: Family Business was, appropriately, the loveable, children’s craft - foam. Yet needing to show foam as both a friendly, intimate plaything and a powerful, massively dangerous ...
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- research-articleJuly 2022
Energetically consistent inelasticity for optimization time integration
ACM Transactions on Graphics (TOG), Volume 41, Issue 4Article No.: 52, Pages 1–16https://doi.org/10.1145/3528223.3530072In this paper, we propose Energetically Consistent Inelasticity (ECI), a new formulation for modeling and discretizing finite strain elastoplasticity/viscoelasticity in a way that is compatible with optimization-based time integrators. We provide an in-...
- research-articleJuly 2022
A general two-stage initialization for sag-free deformable simulations
ACM Transactions on Graphics (TOG), Volume 41, Issue 4Article No.: 64, Pages 1–13https://doi.org/10.1145/3528223.3530165Initializing simulations of deformable objects involves setting the rest state of all internal forces at the rest shape of the object. However, often times the rest shape is not explicitly provided. In its absence, it is common to initialize by treating ...
- research-articleMay 2022
An Efficient B-Spline Lagrangian/Eulerian Method for Compressible Flow, Shock Waves, and Fracturing Solids
ACM Transactions on Graphics (TOG), Volume 41, Issue 5Article No.: 169, Pages 1–13https://doi.org/10.1145/3519595This study presents a new method for modeling the interaction between compressible flow, shock waves, and deformable structures, emphasizing destructive dynamics. Extending advances in time-splitting compressible flow and the Material Point Methods (MPM), ...
- research-articleJuly 2021
A unified second-order accurate in time MPM formulation for simulating viscoelastic liquids with phase change
ACM Transactions on Graphics (TOG), Volume 40, Issue 4Article No.: 119, Pages 1–18https://doi.org/10.1145/3450626.3459820We assume that the viscous forces in any liquid are simultaneously local and non-local, and introduce the extended POM-POM model [McLeish and Larson 1998; Oishi et al. 2012; Verbeeten et al. 2001] to computer graphics to design a unified constitutive ...
- research-articleJanuary 2021
Novel video coding methods for versatile video coding
International Journal of Computational Vision and Robotics (IJCVR), Volume 11, Issue 5Pages 526–541https://doi.org/10.1504/ijcvr.2021.117582Versatile video coding (VVC), which is the next generation video coding standard, is being developed to provide greater coding efficiency than existing video coding standards. In VVC, various coding tools related to intra and inter prediction modes have ...
- research-articleNovember 2020
A novel discretization and numerical solver for non-fourier diffusion
ACM Transactions on Graphics (TOG), Volume 39, Issue 6Article No.: 178, Pages 1–14https://doi.org/10.1145/3414685.3417863We introduce the C-F diffusion model [Anderson and Tamma 2006; Xue et al. 2018] to computer graphics for diffusion-driven problems that has several attractive properties: (a) it fundamentally explains diffusion from the perspective of the non-...
- research-articleAugust 2020
AnisoMPM: animating anisotropic damage mechanics
ACM Transactions on Graphics (TOG), Volume 39, Issue 4Article No.: 37, Pages 37:1–37:16https://doi.org/10.1145/3386569.3392428Dynamic fracture surrounds us in our day-to-day lives, but animating this phenomenon is notoriously difficult and only further complicated by anisotropic materials---those with underlying structures that dictate preferred fracture directions. Thus, we ...
- research-articleAugust 2020
IQ-MPM: an interface quadrature material point method for non-sticky strongly two-way coupled nonlinear solids and fluids
ACM Transactions on Graphics (TOG), Volume 39, Issue 4Article No.: 51, Pages 51:1–51:16https://doi.org/10.1145/3386569.3392438We propose a novel scheme for simulating two-way coupled interactions between nonlinear elastic solids and incompressible fluids. The key ingredient of this approach is a ghost matrix operator-splitting scheme for strongly coupled nonlinear elastica and ...
- research-articleApril 2020
Designing an efficient parallel spectral clustering algorithm on multi-core processors in Julia
Journal of Parallel and Distributed Computing (JPDC), Volume 138, Issue CPages 211–221https://doi.org/10.1016/j.jpdc.2020.01.003AbstractSpectral clustering is widely used in data mining, machine learning and other fields. It can identify the arbitrary shape of a sample space and converge to the global optimal solution. Compared with the traditional k-means algorithm, ...
Highlights- A Julia-based parallel algorithm of the spectral clustering is designed.
- The ...
- research-articleJuly 2019
Simulation and Visualization of Ductile Fracture with the Material Point Method
- Stephanie Wang,
- Mengyuan Ding,
- Theodore F. Gast,
- Leyi Zhu,
- Steven Gagniere,
- Chenfanfu Jiang,
- Joseph M. Teran
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 2, Issue 2Article No.: 18, Pages 1–20https://doi.org/10.1145/3340259We present novel techniques for simulating and visualizing ductile fracture with the Material Point Method (MPM). We utilize traditional particle-based MPM [Stomakhin et al. 2013; Sulsky et al. 1994] as well as the Lagrangian energy formulation of [Jiang ...
- research-articleJuly 2019
A Hybrid Material Point Method for Frictional Contact with Diverse Materials
Proceedings of the ACM on Computer Graphics and Interactive Techniques (PACMCGIT), Volume 2, Issue 2Article No.: 17, Pages 1–24https://doi.org/10.1145/3340258We present a new hybrid Lagrangian Material Point Method for simulating elastic objects like hair, rubber, and soft tissues that utilizes a Lagrangian mesh for internal force computation and an Eulerian mesh for self collision as well as coupling with ...
- articleJune 2019
RD-cost as statistical inference for early intra mode decision in HEVC
Multimedia Tools and Applications (MTAA), Volume 78, Issue 12Pages 16783–16801https://doi.org/10.1007/s11042-018-7111-1Fast intra mode decision strategy is proposed to overcome the brute force mode decision for the coding unit (CU) in High Efficiency Video Coding (HEVC). In this work, firstly, the intra mode in HEVC is studied and various facts are present in the form ...
- research-articleJuly 2018
A material point method for thin shells with frictional contact
ACM Transactions on Graphics (TOG), Volume 37, Issue 4Article No.: 147, Pages 1–15https://doi.org/10.1145/3197517.3201346We present a novel method for simulation of thin shells with frictional contact using a combination of the Material Point Method (MPM) and subdivision finite elements. The shell kinematics are assumed to follow a continuum shell model which is ...
- invited-talkJuly 2017
Production ready MPM simulations
SIGGRAPH '17: ACM SIGGRAPH 2017 TalksArticle No.: 42, Pages 1–2https://doi.org/10.1145/3084363.3085066We present two complementary techniques for Material Point Method (MPM) based simulations to improve their performance and to allow for fine-grained artistic control. Our entirely GPU-based solver is able perform up to five times faster than its ...
- research-articleJuly 2017
Multi-species simulation of porous sand and water mixtures
- Andre Pradhana Tampubolon,
- Theodore Gast,
- Gergely Klár,
- Chuyuan Fu,
- Joseph Teran,
- Chenfanfu Jiang,
- Ken Museth
ACM Transactions on Graphics (TOG), Volume 36, Issue 4Article No.: 105, Pages 1–11https://doi.org/10.1145/3072959.3073651We present a multi-species model for the simulation of gravity driven landslides and debris flows with porous sand and water interactions. We use continuum mixture theory to describe individual phases where each species individually obeys conservation ...