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Multi-behavior recommendation aims to predict user conversions by modeling various interaction types that carry distinct intent signals. Recently, generative sequence modeling methods have emerged as an important paradigm for multi-behavior…

信息检索 · 计算机科学 2026-04-28 Wenxuan Yang , Xiaoyang Xu , Hanyu Zhang , Zhexuan Xu , Wanqiang Xiong , Zhaoqun Chen

In this paper, we investigate reconfigurable pixel antenna (RPA)-based electronic movable antennas (REMAs) for multiuser communications. First, we model each REMA as an antenna characterized by a set of predefined and discrete selectable…

信息论 · 计算机科学 2025-04-02 Kangjian Chen , Chenhao Qi , Yujing Hong , Chau Yuen

Multi-behavior sequential recommendation (MBSR) aims to learn the dynamic and heterogeneous interactions of users' multi-behavior sequences, so as to capture user preferences under target behavior for the next interacted item prediction.…

信息检索 · 计算机科学 2026-02-27 Ruochen Yang , Xiaodong Li , Jiawei Sheng , Jiangxia Cao , Xinkui Lin , Shen Wang , Shuang Yang , Zhaojie Liu , Tingwen Liu

Heuristic search-based planning techniques are commonly used for motion planning on discretized spaces. The performance of these algorithms is heavily affected by the resolution at which the search space is discretized. Typically a fixed…

机器人学 · 计算机科学 2020-04-15 Wei Du , Fahad Islam , Maxim Likhachev

With the development of multimedia systems, multimodal recommendations are playing an essential role, as they can leverage rich contexts beyond interactions. Existing methods mainly regard multimodal information as an auxiliary, using them…

信息检索 · 计算机科学 2024-08-02 Yifan Liu , Kangning Zhang , Xiangyuan Ren , Yanhua Huang , Jiarui Jin , Yingjie Qin , Ruilong Su , Ruiwen Xu , Yong Yu , Weinan Zhang

We propose a method for metric-scale monocular depth estimation. Inferring depth from a single image is an ill-posed problem due to the loss of scale from perspective projection during the image formation process. Any scale chosen is a…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Ziyao Zeng , Yangchao Wu , Hyoungseob Park , Daniel Wang , Fengyu Yang , Stefano Soatto , Dong Lao , Byung-Woo Hong , Alex Wong

Many modern computer vision and machine learning applications rely on solving difficult optimization problems that involve non-differentiable objective functions and constraints. The alternating direction method of multipliers (ADMM) is a…

计算机视觉与模式识别 · 计算机科学 2017-04-11 Zheng Xu , Mario A. T. Figueiredo , Xiaoming Yuan , Christoph Studer , Tom Goldstein

The increasing demand for long-context modeling in large language models (LLMs) is bottlenecked by the quadratic complexity of the standard self-attention mechanism. The community has proposed sparse attention to mitigate this issue.…

人工智能 · 计算机科学 2025-11-18 Jingze Shi , Yifan Wu , Yiran Peng , Bingheng Wu , Liangdong Wang , Guang Liu , Yuyu Luo

In clinical trials, mixed effects models for repeated measures (MMRM) and pattern mixture models (PMM) are often used to analyze longitudinal continuous outcomes. We describe a simple missing data imputation algorithm for the MMRM that can…

统计方法学 · 统计学 2016-10-13 Yongqiang Tang

In this study, we introduce an innovative methodology aimed at enhancing Fisher's Linear Discriminant Analysis (LDA) in the context of high-dimensional data classification scenarios, specifically addressing situations where each feature…

应用统计 · 统计学 2024-01-18 Seungyeon Oh , Hoyoung Park

The increased deployment of multi-robot systems (MRS) in various fields has led to the need for analysis of system-level performance. However, creating consistent metrics for MRS is challenging due to the wide range of system and…

机器人学 · 计算机科学 2024-05-06 Pujie Xin , Zhanteng Xie , Philip Dames

Robot decision-making increasingly relies on data-driven human prediction models when operating around people. While these models are known to mispredict in out-of-distribution interactions, only a subset of prediction errors impact…

机器人学 · 计算机科学 2024-11-12 Kensuke Nakamura , Ran Tian , Andrea Bajcsy

We propose PsiRec, a novel user preference propagation recommender that incorporates pseudo-implicit feedback for enriching the original sparse implicit feedback dataset. Three of the unique characteristics of PsiRec are: (i) it views…

信息检索 · 计算机科学 2019-01-07 Yun He , Haochen Chen , Ziwei Zhu , James Caverlee

This paper reports a new hierarchical architecture for modeling autonomous multi-robot systems (MRSs): a nonlinear dynamical opinion process is used to model high-level group choice, and multi-objective behavior optimization is used to…

机器人学 · 计算机科学 2024-10-22 Tyler M. Paine , Michael R. Benjamin

Reward models (RMs) are a core component in the post-training of large language models (LLMs), serving as proxies for human preference evaluation and guiding model alignment. However, training reliable RMs under limited resources remains…

人工智能 · 计算机科学 2025-11-12 Dengcan Liu , Jiahao Li , Zheren Fu , Yi Tu , Jiajun Li , Zhendong Mao , Yongdong Zhang

Information visualization significantly enhances human perception by graphically representing complex data sets. The variety of visualization designs makes it challenging to efficiently evaluate all possible designs catering to users'…

统计方法学 · 统计学 2020-04-07 Xiaoning Kang , Xiaoyu Chen , Ran Jin , Hao Wu , Xinwei Deng

Recommender Systems (RS) play a pivotal role in boosting user satisfaction by providing personalized product suggestions in domains such as e-commerce and entertainment. This study examines the integration of multimodal data text and audio…

信息检索 · 计算机科学 2024-09-16 Zezheng Qin

Collaborative Metric Learning (CML) has recently emerged as a popular method in recommendation systems (RS), closing the gap between metric learning and collaborative filtering. Following the convention of RS, existing practices exploit…

信息检索 · 计算机科学 2024-09-04 Shilong Bao , Qianqian Xu , Zhiyong Yang , Yuan He , Xiaochun Cao , Qingming Huang

We propose new methods for multivariate linear regression when the regression coefficient matrix is sparse and the error covariance matrix is dense. We assume that the error covariance matrix has equicorrelation across the response…

统计方法学 · 统计学 2025-08-13 Daeyoung Ham , Bradley S. Price , Adam J. Rothman

When aligning large language models (LLMs), their performance on various tasks (such as being helpful, harmless, and honest) depends heavily on the composition of their training data. However, selecting a data mixture that achieves strong…