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Recently, tensor data (or multidimensional array) have been generated in many modern applications, such as functional magnetic resonance imaging (fMRI) in neuroscience and videos in video analysis. Many efforts are made in recent years to…

机器学习 · 计算机科学 2023-08-10 Jiaqi Zhang , Yinghao Cai , Zhaoyang Wang , Beilun Wang

We present a Multi-Task Learning (MTL) approach for improving predictions for rare (e.g., <1%) conversion events in online advertising. The conversions are classified into "rare" or "frequent" types based on historical statistics. The model…

信息检索 · 计算机科学 2025-07-29 Yuval Dishi , Ophir Friedler , Yonatan Karni , Natalia Silberstein , Yulia Stolin

Multi-task learning (MTL) has been widely adopted for its ability to simultaneously learn multiple tasks. While existing gradient manipulation methods often yield more balanced solutions than simple scalarization-based approaches, they…

机器学习 · 计算机科学 2025-09-29 Peiyao Xiao , Chaosheng Dong , Shaofeng Zou , Kaiyi Ji

Transfer learning is an emerging paradigm for leveraging multiple sources to improve the statistical inference on a single target. In this paper, we propose a novel approach named residual importance weighted transfer learning (RIW-TL) for…

统计方法学 · 统计学 2024-01-04 Junlong Zhao , Shengbin Zheng , Chenlei Leng

In Multi-Task Learning (MTL), it is a common practice to train multi-task networks by optimizing an objective function, which is a weighted average of the task-specific objective functions. Although the computational advantages of this…

机器学习 · 计算机科学 2022-07-19 Lucas Pascal , Pietro Michiardi , Xavier Bost , Benoit Huet , Maria A. Zuluaga

This work develops robust diffusion recursive least squares algorithms to mitigate the performance degradation often experienced in networks of agents in the presence of impulsive noise. The first algorithm minimizes an exponentially…

机器学习 · 计算机科学 2019-02-05 Y. Yu , H. Zhao , R. C. de Lamare , Y. Zakharov , L. Lu

Heterogeneous multi-task learning (HMTL) is an important topic in multi-task learning (MTL). Most existing HMTL methods usually solve either scenario where all tasks reside in the same input (feature) space yet unnecessarily the consistent…

机器学习 · 计算机科学 2021-02-01 Quan Feng , Songcan Chen

Distributed adaptive signal processing has attracted much attention in the recent decade owing to its effectiveness in many decentralized real-time applications in networked systems. Because many natural signals are highly sparse with most…

最优化与控制 · 数学 2017-11-22 Xuanyu Cao , K. J. Ray Liu

The one-class kernel spectral regression (OC-KSR), the regression-based formulation of the kernel null-space approach has been found to be an effective Fisher criterion-based methodology for one-class classification (OCC), achieving…

机器学习 · 计算机科学 2019-05-23 Shervin Rahimzadeh Arashloo , Josef Kittler

The iteratively reweighted least squares method (IRLS) is a popular technique used in practice for solving regression problems. Various versions of this method have been proposed, but their theoretical analyses failed to capture the good…

数据结构与算法 · 计算机科学 2019-07-11 Alina Ene , Adrian Vladu

Multi-task learning (MTL) is a learning paradigm that enables the simultaneous training of multiple communicating algorithms. Although MTL has been successfully applied to ether regression or classification tasks alone, incorporating mixed…

Most multilayer least squares (LS)-based neural networks are structured with two separate stages: unsupervised feature encoding and supervised pattern classification. Once the unsupervised learning is finished, the latent encoding would be…

机器学习 · 计算机科学 2021-03-04 Wandong Zhang , QM Jonathan Wu , Yimin Yang , WG Will Zhao , Tianlei Wang , Hui Zhang

The main contribution of the paper is a new approach to subspace clustering that is significantly more computationally efficient and scalable than existing state-of-the-art methods. The central idea is to modify the regression technique in…

机器学习 · 统计学 2018-07-11 Urvashi Oswal , Robert Nowak

We study computational aspects of a key problem in robust statistics -- the penalized least trimmed squares (LTS) regression problem, a robust estimator that mitigates the influence of outliers in data by capping residuals with large…

最优化与控制 · 数学 2026-04-15 Xiang Meng , Andrés Gómez , Rahul Mazumder

Given a linear regression setting, Iterative Least Trimmed Squares (ILTS) involves alternating between (a) selecting the subset of samples with lowest current loss, and (b) re-fitting the linear model only on that subset. Both steps are…

机器学习 · 计算机科学 2019-11-13 Yanyao Shen , Sujay Sanghavi

We present a robust multiple manifolds structure learning (RMMSL) scheme to robustly estimate data structures under the multiple low intrinsic dimensional manifolds assumption. In the local learning stage, RMMSL efficiently estimates local…

机器学习 · 计算机科学 2012-06-22 Dian Gong , Xuemei Zhao , Gerard Medioni

Online advertising in recommendation platforms has gained significant attention, with a predominant focus on channel recommendation and budget allocation strategies. However, current offline reinforcement learning (RL) methods face…

信息检索 · 计算机科学 2025-07-10 Langming Liu , Wanyu Wang , Chi Zhang , Bo Li , Hongzhi Yin , Xuetao Wei , Wenbo Su , Bo Zheng , Xiangyu Zhao

Efficient and interpretable spatial analysis is crucial in many fields such as geology, sports, and climate science. Tensor latent factor models can describe higher-order correlations for spatial data. However, they are computationally…

机器学习 · 计算机科学 2020-08-18 Jung Yeon Park , Kenneth Theo Carr , Stephan Zheng , Yisong Yue , Rose Yu

Online multi-task learning (OMTL) enhances streaming data processing by leveraging the inherent relations among multiple tasks. It can be described as an optimization problem in which a single loss function is defined for multiple tasks.…

机器学习 · 计算机科学 2024-11-12 Ruiyu Li , Peilin Zhao , Guangxia Li , Zhiqiang Xu , Xuewei Li

Trajectory prediction plays a pivotal role in the field of intelligent vehicles. It currently suffers from several challenges,e.g., accumulative error in rollout process and weak adaptability in various scenarios. This paper proposes a…

机器学习 · 计算机科学 2021-08-04 Qifan Xue , Xuanpeng Li , Weigong Zhang