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This paper develops a new storage-optimal algorithm that provably solves generic semidefinite programs (SDPs) in standard form. This method is particularly effective for weakly constrained SDPs. The key idea is to formulate an approximate…

最优化与控制 · 数学 2020-06-19 Lijun Ding , Alp Yurtsever , Volkan Cevher , Joel A. Tropp , Madeleine Udell

We present a new approach to solve the exponential retrieval problem. We derive a stable technique, based on the singular value decomposition (SVD) of lag-covariance and crosscovariance matrices consisting of covariance coefficients…

信号处理 · 电气工程与系统科学 2020-08-11 D. J Nicolsky , G. S. Tipenko

A shift of paradigm is currently underway in biomedical ultrasound thanks to plane and diverging waves for ultrafast imaging. One remaining challenge consists in the correction of phase and amplitude aberrations induced during propagation…

图像与视频处理 · 电气工程与系统科学 2019-10-15 Hanna Bendjador , Thomas Deffieux , Mickaël Tanter

Considering a 2D matrix of positive and negative numbers, how might one draw a rectangle within it whose contents sum higher than all other rectangles'? This fundamental problem, commonly known the maximum rectangle problem or subwindow…

数据结构与算法 · 计算机科学 2023-04-11 Max Reuter , Gheorghe-Teodor Bercea , Liana Fong

Recent works have shown that powerful pre-trained language models (PLM) can be fooled by small perturbations or intentional attacks. To solve this issue, various data augmentation techniques are proposed to improve the robustness of PLMs.…

计算与语言 · 计算机科学 2021-09-14 Kun Zhou , Wayne Xin Zhao , Sirui Wang , Fuzheng Zhang , Wei Wu , Ji-Rong Wen

This paper presents a novel fast machine learning method that leverages two techniques: Vector Embedding on Orthonormal Basis (VEOB) and Spectral Transform (ST). The VEOB converts the original data encoding into a vector embedding with…

机器学习 · 计算机科学 2023-11-14 Louis Yu Lu

The QR factorization and the SVD are two fundamental matrix decompositions with applications throughout scientific computing and data analysis. For matrices with many more rows than columns, so-called "tall-and-skinny matrices," there is a…

分布式、并行与集群计算 · 计算机科学 2018-01-08 Austin R. Benson , David F. Gleich , James Demmel

The Levenberg-Marquardt (LM) method is commonly used for inverting models used to describe geothermal, groundwater, or oil and gas reservoirs. In previous studies LM parameter updates have been made tractable for highly parameterized…

最优化与控制 · 数学 2018-05-23 Elvar K. Bjarkason , Oliver J. Maclaren , John P. O'Sullivan , Michael J. O'Sullivan

Today, Multi-View Stereo techniques are able to reconstruct robust and detailed 3D models, especially when starting from high-resolution images. However, there are cases in which the resolution of input images is relatively low, for…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Eugenio Lomurno , Andrea Romanoni , Matteo Matteucci

In this paper we propose novel methods for compression and recovery of multilinear data under limited sampling. We exploit the recently proposed tensor- Singular Value Decomposition (t-SVD)[1], which is a group theoretic framework for…

信息论 · 计算机科学 2013-11-01 Zemin Zhang , Gregory Ely , Shuchin Aeron , Ning Hao , Misha Kilmer

By singular value decomposition (SVD) of a numerically singular Hessian matrix and a numerically singular system of linear equations for the experimental data (accumulated in the respective ${\chi ^2}$ function) and constraints, least…

高能物理 - 唯象学 · 物理学 2014-08-27 Mehrdad Goshtasbpour

Deep Neural Networks (DNNs) have encountered an emerging deployment challenge due to large and expensive memory and computation requirements. In this paper, we present a new Adaptive-Rank Singular Value Decomposition (ARSVD) method that…

机器学习 · 计算机科学 2025-05-13 Kalyan Cherukuri , Aarav Lala

Recent developments in Parameter-Efficient Fine-Tuning (PEFT) methods for pretrained deep neural networks have captured widespread interest. In this work, we study the enhancement of current PEFT methods by incorporating the spectral…

机器学习 · 计算机科学 2024-11-05 Fangzhao Zhang , Mert Pilanci

A new algorithm to compute the restricted singular value decomposition of dense matrices is presented. Like Zha's method \cite{Zha92}, the new algorithm uses an implicit Kogbetliantz iteration, but with four major innovations. The first…

数值分析 · 数学 2020-02-13 Ian N. Zwaan

Matrix completion, where we wish to recover a low rank matrix by observing a few entries from it, is a widely studied problem in both theory and practice with wide applications. Most of the provable algorithms so far on this problem have…

机器学习 · 计算机科学 2016-05-27 Chi Jin , Sham M. Kakade , Praneeth Netrapalli

Support Vector Machines (SVM) have gathered significant acclaim as classifiers due to their successful implementation of Statistical Learning Theory. However, in the context of multiclass and multilabel settings, the reliance on…

机器学习 · 计算机科学 2023-07-19 Sambhav Jain Reshma Rastogi

We develop methods for parameter estimation in settings with large-scale data sets, where traditional methods are no longer tenable. Our methods rely on stochastic approximations, which are computationally efficient as they maintain one…

统计计算 · 统计学 2015-09-23 Dustin Tran , Panos Toulis , Edoardo M. Airoldi

Although support vector machines (SVMs) are theoretically well understood, their underlying optimization problem becomes very expensive, if, for example, hundreds of thousands of samples and a non-linear kernel are considered. Several…

机器学习 · 统计学 2018-02-09 Philipp Thomann , Ingrid Blaschzyk , Mona Meister , Ingo Steinwart

Singular Value Decomposition (SVD) is a popular approach in various network applications, such as link prediction and network parameter characterization. Incremental SVD approaches are proposed to process newly changed nodes and edges in…

社会与信息网络 · 计算机科学 2017-11-28 Ziwei Zhang , Peng Cui , Jian Pei , Xiao Wang , Wenwu Zhu

We present a solution to scale spectral algorithms for learning sequence functions. We are interested in the case where these functions are sparse (that is, for most sequences they return 0). Spectral algorithms reduce the learning problem…

机器学习 · 计算机科学 2017-06-12 Ariadna Quattoni , Xavier Carreras , Matthias Gallé