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Multivariate random effects with unstructured variance-covariance matrices of large dimensions, $q$, can be a major challenge to estimate. In this paper, we introduce a new implementation of a reduced-rank approach to fit large dimensional…

统计方法学 · 统计学 2024-11-08 Maeve McGillycuddy , Gordana Popovic , Benjamin M. Bolker , David I. Warton

In multimodal sentiment analysis (MSA), the performance of a model highly depends on the quality of synthesized embeddings. These embeddings are generated from the upstream process called multimodal fusion, which aims to extract and combine…

计算与语言 · 计算机科学 2021-09-17 Wei Han , Hui Chen , Soujanya Poria

We propose a Bayesian regression method that accounts for multi-way interactions of arbitrary orders among the predictor variables. Our model makes use of a factorization mechanism for representing the regression coefficients of…

机器学习 · 统计学 2017-09-28 Mikhail Yurochkin , XuanLong Nguyen , Nikolaos Vasiloglou

Penalized estimation can conduct variable selection and parameter estimation simultaneously. The general framework is to minimize a loss function subject to a penalty designed to generate sparse variable selection. The…

统计计算 · 统计学 2024-01-11 Zhu Wang

Matrix factorization (MF), a cornerstone of recommender systems, decomposes user-item interaction matrices into latent representations. Traditional MF approaches, however, employ a two-stage, non-end-to-end paradigm, sequentially performing…

信息检索 · 计算机科学 2025-04-22 Shangde Gao , Ke Liu , Yichao Fu , Hongxia Xu , Jian Wu

Extreme value theory (EVT) provides an elegant mathematical tool for the statistical analysis of rare events. When data are collected from multiple population subgroups, because some subgroups may have less data available for extreme value…

统计方法学 · 统计学 2024-10-22 Koki Momoki , Takuma Yoshida

Learning by integrating multiple heterogeneous data sources is a common requirement in many tasks. Collective Matrix Factorization (CMF) is a technique to learn shared latent representations from arbitrary collections of matrices. It can be…

机器学习 · 计算机科学 2021-09-29 Ragunathan Mariappan , Vaibhav Rajan

In this work, decision feedback (DF) detection algorithms based on multiple processing branches for multi-input multi-output (MIMO) spatial multiplexing systems are proposed. The proposed detector employs multiple cancellation branches with…

信息论 · 计算机科学 2013-08-14 R. C. de Lamare

Recent advances in deep learning highlight the need for personalized models that can learn from small samples, handle high-dimensional features, and remain interpretable. To address this, we propose the Sparse Deep Additive Model with…

机器学习 · 统计学 2026-05-19 Yi-Ting Hung , Li-Hsiang Lin , Vince D. Calhoun

Global optimization of decision trees is a long-standing challenge in combinatorial optimization, yet such models play an important role in interpretable machine learning. Although the problem has been investigated for several decades, only…

机器学习 · 计算机科学 2026-02-03 Jiancheng Tu , Wenqi Fan , Zhibin Wu

Measuring Mutual Information (MI) between high-dimensional, continuous, random variables from observed samples has wide theoretical and practical applications. Recent work, MINE (Belghazi et al. 2018), focused on estimating tight…

机器学习 · 计算机科学 2019-05-28 Xiao Lin , Indranil Sur , Samuel A. Nastase , Ajay Divakaran , Uri Hasson , Mohamed R. Amer

For a learning task, data can usually be collected from different sources or be represented from multiple views. For example, laboratory results from different medical examinations are available for disease diagnosis, and each of them can…

机器学习 · 计算机科学 2018-03-28 Bokai Cao , Hucheng Zhou , Guoqiang Li , Philip S. Yu

Raman mapping technique has been used to perform in-line quality inspections of nanomanufacturing processes. In such an application, massive high-dimensional Raman mapping data with mixed effects is generated. In general, fixed effects and…

统计方法学 · 统计学 2019-03-08 Xiaowei Yue , Jin Gyu Park , Zhiyong Liang , Jianjun Shi

The bilevel functional data under consideration has two sources of repeated measurements. One is to densely and repeatedly measure a variable from each subject at a series of regular time/spatial points, which is named as functional data.…

统计方法学 · 统计学 2021-11-15 Xiaotian Dai , Guifang Fu

Collaborative filtering is one of the most popular techniques in designing recommendation systems, and its most representative model, matrix factorization, has been wildly used by researchers and the industry. However, this model suffers…

信息检索 · 计算机科学 2019-12-17 Yixin Su , Sarah Monazam Erfani , Rui Zhang

In this work we propose schemes for joint model-order and step-size adaptation of reduced-rank adaptive filters. The proposed schemes employ reduced-rank adaptive filters in parallel operating with different orders and step sizes, which are…

信息论 · 计算机科学 2013-05-17 Rodrigo C. de Lamare , Vitor H. Nascimento

Automatic Facial Expression Recognition (FER) has attracted increasing attention in the last 20 years since facial expressions play a central role in human communication. Most FER methodologies utilize Deep Neural Networks (DNNs) that are…

计算机视觉与模式识别 · 计算机科学 2022-05-10 Andreas Psaroudakis , Dimitrios Kollias

We propose a novel learning framework using neural mean-field (NMF) dynamics for inference and estimation problems on heterogeneous diffusion networks. Our new framework leverages the Mori-Zwanzig formalism to obtain an exact evolution…

机器学习 · 计算机科学 2021-06-07 Shushan He , Hongyuan Zha , Xiaojing Ye

Meshfree simulation methods are emerging as compelling alternatives to conventional mesh-based approaches, particularly in the fields of Computational Fluid Dynamics (CFD) and continuum mechanics. In this publication, we provide a…

机器学习 · 计算机科学 2024-03-21 Paulami Banerjee , Mohan Padmanabha , Chaitanya Sanghavi , Isabel Michel , Simone Gramsch

Matrix completion is a class of machine learning methods that concerns the prediction of missing entries in a partially observed matrix. This paper studies matrix completion for mixed data, i.e., data involving mixed types of variables…

机器学习 · 统计学 2022-11-18 Yunxiao Chen , Xiaoou Li