Search Results for author: Yuehaw Khoo

Found 19 papers, 6 papers with code

Nonparametric Estimation via Variance-Reduced Sketching

1 code implementation22 Jan 2024 Yuehaw Khoo, Yifan Peng, Daren Wang

In this paper, we introduce a new framework called Variance-Reduced Sketching (VRS), specifically designed to estimate density functions and nonparametric regression functions in higher dimensions with a reduced curse of dimensionality.

Density Estimation regression

Matching via Distance Profiles

no code implementations19 Dec 2023 YoonHaeng Hur, Yuehaw Khoo

In this paper, we introduce and study matching methods based on distance profiles.

Combining Monte Carlo and Tensor-network Methods for Partial Differential Equations via Sketching

no code implementations29 May 2023 Yian Chen, Yuehaw Khoo

In this paper, we propose a general framework for solving high-dimensional partial differential equations with tensor networks.

Tensor Networks

Tensorizing flows: a tool for variational inference

no code implementations3 May 2023 Yuehaw Khoo, Michael Lindsey, Hongli Zhao

Fueled by the expressive power of deep neural networks, normalizing flows have achieved spectacular success in generative modeling, or learning to draw new samples from a distribution given a finite dataset of training samples.

Tensor Networks Variational Inference

Deep Neural-network Prior for Orbit Recovery from Method of Moments

no code implementations28 Apr 2023 Yuehaw Khoo, Sounak Paul, Nir Sharon

In the multireference alignment case, we demonstrate the advantage of using the NN to accelerate the convergence for the reconstruction of signals from the moments.

Generative Modeling via Hierarchical Tensor Sketching

no code implementations11 Apr 2023 Yifan Peng, Yian Chen, E. Miles Stoudenmire, Yuehaw Khoo

We propose a hierarchical tensor-network approach for approximating high-dimensional probability density via empirical distribution.

High-dimensional density estimation with tensorizing flow

no code implementations1 Dec 2022 Yinuo Ren, Hongli Zhao, Yuehaw Khoo, Lexing Ying

We propose the tensorizing flow method for estimating high-dimensional probability density functions from the observed data.

Density Estimation Vocal Bursts Intensity Prediction

Generative Modeling via Tree Tensor Network States

no code implementations3 Sep 2022 Xun Tang, YoonHaeng Hur, Yuehaw Khoo, Lexing Ying

In this paper, we present a density estimation framework based on tree tensor-network states.

Density Estimation

Reinforced Inverse Scattering

no code implementations8 Jun 2022 Hanyang Jiang, Yuehaw Khoo, Haizhao Yang

Inverse wave scattering aims at determining the properties of an object using data on how the object scatters incoming waves.

Object reinforcement-learning +1

A Spectral Method for Joint Community Detection and Orthogonal Group Synchronization

1 code implementation25 Dec 2021 Yifeng Fan, Yuehaw Khoo, Zhizhen Zhao

Community detection and orthogonal group synchronization are both fundamental problems with a variety of important applications in science and engineering.

Community Detection

Joint Community Detection and Rotational Synchronization via Semidefinite Programming

1 code implementation13 May 2021 Yifeng Fan, Yuehaw Khoo, Zhizhen Zhao

In the presence of heterogeneous data, where randomly rotated objects fall into multiple underlying categories, it is challenging to simultaneously classify them into clusters and synchronize them based on pairwise relations.

Community Detection Stochastic Block Model

A semigroup method for high dimensional committor functions based on neural network

no code implementations12 Dec 2020 Haoya Li, Yuehaw Khoo, Yinuo Ren, Lexing Ying

This paper proposes a new method based on neural networks for computing the high-dimensional committor functions that satisfy Fokker-Planck equations.

Vocal Bursts Intensity Prediction

NMR Assignment through Linear Programming

1 code implementation9 Aug 2020 Jose F. S. Bravo-Ferreira, David Cowburn, Yuehaw Khoo, Amit Singer

Nuclear Magnetic Resonance (NMR) Spectroscopy is the second most used technique (after X-ray crystallography) for structural determination of proteins.

Solving for high dimensional committor functions using artificial neural networks

no code implementations28 Feb 2018 Yuehaw Khoo, Jianfeng Lu, Lexing Ying

In this note we propose a method based on artificial neural network to study the transition between states governed by stochastic processes.

Vocal Bursts Intensity Prediction

Solving parametric PDE problems with artificial neural networks

1 code implementation11 Jul 2017 Yuehaw Khoo, Jianfeng Lu, Lexing Ying

The representability of such quantity using a neural-network can be justified by viewing the neural-network as performing time evolution to find the solutions to the PDE.

Numerical Analysis 65Nxx

Non-iterative rigid 2D/3D point-set registration using semidefinite programming

no code implementations4 Jan 2015 Yuehaw Khoo, Ankur Kapoor

We describe a convex programming framework for pose estimation in 2D/3D point-set registration with unknown point correspondences.

Pose Estimation

Open problem: Tightness of maximum likelihood semidefinite relaxations

no code implementations10 Apr 2014 Afonso S. Bandeira, Yuehaw Khoo, Amit Singer

We have observed an interesting, yet unexplained, phenomenon: Semidefinite programming (SDP) based relaxations of maximum likelihood estimators (MLE) tend to be tight in recovery problems with noisy data, even when MLE cannot exactly recover the ground truth.

Global registration of multiple point clouds using semidefinite programming

no code implementations21 Jun 2013 Kunal. N. Chaudhury, Yuehaw Khoo, Amit Singer

We empirically demonstrate that (a) unlike the spectral relaxation, the relaxation gap is mostly zero for the semidefinite program (i. e., we are able to solve the original non-convex least-squares problem) up to a certain noise threshold, and (b) the semidefinite program performs significantly better than spectral and manifold-optimization methods, particularly at large noise levels.

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