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Visual Question Answering (VQA) is concerned with answering free-form questions about an image. Since it requires a deep semantic and linguistic understanding of the question and the ability to associate it with various objects that are…

Computer Vision and Pattern Recognition · Computer Science 2021-07-15 Rajat Koner , Hang Li , Marcel Hildebrandt , Deepan Das , Volker Tresp , Stephan Günnemann

Most existing studies on joint activity detection and channel estimation for grant-free massive random access (RA) systems assume perfect synchronization among all active users, which is hard to achieve in practice. Therefore, this paper…

Signal Processing · Electrical Eng. & Systems 2023-05-23 Xinyu Bian , Yuyi Mao , Jun Zhang

Data analytics over normalized databases typically requires computing and materializing expensive joins (wide-tables). Factorized query execution models execution as message passing between relations in the join graph and pushes…

Databases · Computer Science 2022-10-11 Zezhou Huang , Eugene Wu

Massive machine-type communications (mMTC) are poised to provide ubiquitous connectivity for billions of Internet-of-Things (IoT) devices. However, the required low-latency massive access necessitates a paradigm shift in the design of…

Information Theory · Computer Science 2021-08-24 Yikun Mei , Zhen Gao , Yongpeng Wu , Wei Chen , Jun Zhang , Derrick Wing Kwan Ng , Marco Di Renzo

Multi-view clustering can partition data samples into their categories by learning a consensus representation in unsupervised way and has received more and more attention in recent years. However, most existing deep clustering methods learn…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Weiqing Yan , Yuanyang Zhang , Chenlei Lv , Chang Tang , Guanghui Yue , Liang Liao , Weisi Lin

Multi-agent path finding (MAPF) attracts considerable attention in artificial intelligence community as well as in robotics, and other fields such as warehouse logistics. The task in the standard MAPF is to find paths through which agents…

Artificial Intelligence · Computer Science 2021-05-11 Pavel Surynek

Retrieval-Augmented Generation (RAG) systems face significant challenges in complex reasoning, multi-hop queries, and domain-specific QA. While existing GraphRAG frameworks have made progress in structural knowledge organization, they still…

Artificial Intelligence · Computer Science 2026-05-27 Jie Wang , Honghua Huang , Xi Ge , Jianhui Su , Wen Liu , Shiguo Lian

Developers often need to decide which APIs to use for the functions being implemented. With the ever-growing number of APIs and libraries, it becomes increasingly difficult for developers to find appropriate APIs, indicating the necessity…

Software Engineering · Computer Science 2022-08-04 Yujia Chen , Xiaoxue Ren , Cuiyun Gao , Yun Peng , Xin Xia , Michael R. Lyu

Recent works have shown that depth information can be obtained from Dual-Pixel (DP) sensors. A DP arrangement provides two views in a single shot, thus resembling a stereo image pair with a tiny baseline. However, the different point spread…

Computer Vision and Pattern Recognition · Computer Science 2023-06-14 Sagi Monin , Sagi Katz , Georgios Evangelidis

Retrieval-augmented generation (RAG) has emerged as a promising paradigm for enhancing large language models (LLMs) on multi-hop question answering (QA), which requires reasoning over evidence from multiple documents. Current multi-hop RAG…

Computation and Language · Computer Science 2026-05-28 Yikai Zhu , Kunfeng Chen , Qihuang Zhong , Juhua Liu , Bo Du

LLM-powered search services have driven data integration as a significant trend. However, this trend's progress is fundamentally hindered, despite the fact that combining individual knowledge can significantly improve the relevance and…

Cryptography and Security · Computer Science 2025-07-24 Ruoyang Rykie Guo

Multi-Agent Path Finding (MAPF) requires collision-free trajectories for multiple agents on a shared graph, often with the objective of minimizing the sum-of-costs (SOC). Many optimal and bounded-suboptimal solvers rely on time-expanded…

Multiagent Systems · Computer Science 2026-04-08 Fernando Salanova , Eduardo Montijano , Cristian Mahulea

Offload of MPI collectives to network devices, e.g., NICs and switches, is being implemented as an effective mechanism to improve application performance by reducing inter- and intra-node communication and bypassing MPI software layers.…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-06-01 Pouya Haghi , Ryan Marshall , Po Hao Chen , Anthony Skjellum , Martin Herbordt

Retrieval-augmented generation (RAG) has demonstrated strong performance in single-hop question answering (QA) by integrating external knowledge into large language models (LLMs). However, its effectiveness remains limited in multi-hop QA,…

Computation and Language · Computer Science 2026-01-13 Ningning Zhang , Chi Zhang , Zhizhong Tan , Xingxing Yang , Weiping Deng , Wenyong Wang

This paper presents GraphFederator, a novel approach to construct joint representations of multi-party graphs and supports privacy-preserving visual analysis of graphs. Inspired by the concept of federated learning, we reformulate the…

Human-Computer Interaction · Computer Science 2020-08-28 Dongming Han , Wei Chen , Rusheng Pan , Yijing Liu , Jiehui Zhou , Ying Xu , Tianye Zhang , Changjie Fan , Jianrong Tao , Xiaolong , Zhang

Person search generally involves three important parts: person detection, feature extraction and identity comparison. However, person search integrating detection, extraction and comparison has the following drawbacks. Firstly, the accuracy…

Computer Vision and Pattern Recognition · Computer Science 2020-12-14 Ye Li , Kangning Yin , Jie Liang , Chunyu Wang , Guangqiang Yin

Physical adversarial attack methods expose the vulnerabilities of deep neural networks and pose a significant threat to safety-critical scenarios such as autonomous driving. Camouflage-based physical attack is a more promising approach…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Tianrui Lou , Xiaojun Jia , Siyuan Liang , Jiawei Liang , Ming Zhang , Yanjun Xiao , Xiaochun Cao

Visual-based perception is the key module for autonomous driving. Among those visual perception tasks, video object detection is a primary yet challenging one because of feature degradation caused by fast motion or multiple poses. Current…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Yiming Cui , Cheng Han , Dongfang Liu

Online mapping reduces the reliance of autonomous vehicles on high-definition (HD) maps, significantly enhancing scalability. However, recent advancements often overlook cross-sensor configuration generalization, leading to performance…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Hengyuan Zhang , David Paz , Yuliang Guo , Xinyu Huang , Henrik I. Christensen , Liu Ren

We propose and experimentally evaluate a novel secure aggregation algorithm targeted at cross-organizational federated learning applications with a fixed set of participating learners. Our solution organizes learners in a chain and encrypts…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-08-16 Thomas Sandholm , Sayandev Mukherjee , Bernardo A. Huberman