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Pedestrian detection in a crowd is a challenging task due to a high number of mutually-occluding human instances, which brings ambiguity and optimization difficulties to the current IoU-based ground truth assignment procedure in classical…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Yuang Zhang , Huanyu He , Jianguo Li , Yuxi Li , John See , Weiyao Lin

The goal of modern sequential recommender systems is often formulated in terms of next-item prediction. In this paper, we explore the applicability of generative transformer-based models for the Top-K sequential recommendation task, where…

Information Retrieval · Computer Science 2025-08-19 Anna Volodkevich , Danil Gusak , Anton Klenitskiy , Alexey Vasilev

DETR has been recently proposed to eliminate the need for many hand-designed components in object detection while demonstrating good performance. However, it suffers from slow convergence and limited feature spatial resolution, due to the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-19 Xizhou Zhu , Weijie Su , Lewei Lu , Bin Li , Xiaogang Wang , Jifeng Dai

Transformer-based object detectors (DETR) have shown significant performance across machine vision tasks, ultimately in object detection. This detector is based on a self-attention mechanism along with the transformer encoder-decoder…

Computer Vision and Pattern Recognition · Computer Science 2023-10-16 Zhao Ning Zou , Yuhang Zhang , Robert Wijaya

This paper focuses on the dynamic optimization of the Retrieval-Augmented Generation (RAG) architecture. It proposes a state-aware dynamic knowledge retrieval mechanism to enhance semantic understanding and knowledge scheduling efficiency…

Computation and Language · Computer Science 2025-04-29 Jacky He , Guiran Liu , Binrong Zhu , Hanlu Zhang , Hongye Zheng , Xiaokai Wang

Large language models (LLMs) often struggle with knowledge-intensive tasks due to hallucinations and outdated parametric knowledge. While Retrieval-Augmented Generation (RAG) addresses this by integrating external corpora, its effectiveness…

Computation and Language · Computer Science 2026-02-04 Su Dong , Qinggang Zhang , Yilin Xiao , Shengyuan Chen , Chuang Zhou , Xiao Huang

Different objects in the same scene are more or less related to each other, but only a limited number of these relationships are noteworthy. Inspired by DETR, which excels in object detection, we view scene graph generation as a set…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Yuren Cong , Michael Ying Yang , Bodo Rosenhahn

End-to-end Transformer-based detectors (DETRs) have demonstrated strong detection performance. However, domain generalization (DG) research has primarily focused on convolutional neural network (CNN)-based detectors, while paying little…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Seongmin Hwang , Daeyoung Han , Moongu Jeon

Detecting the objects in dense and rotated scenes is a challenging task. Recent works on this topic are mostly based on Faster RCNN or Retinanet. As they are highly dependent on the pre-set dense anchors and the NMS operation, the approach…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Zhu Yuke , Ruan Yumeng , Yang Lei , Guo Sheng

The Transformer-based detectors (i.e., DETR) have demonstrated impressive performance on end-to-end object detection. However, transferring DETR to different data distributions may lead to a significant performance degradation. Existing…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Peidong Jia , Jiaming Liu , Senqiao Yang , Jiarui Wu , Xiaodong Xie , Shanghang Zhang

Dense retrievers enhance retrieval by encoding queries and documents into continuous vectors, but they often struggle with reasoning-intensive queries. Although Large Language Models (LLMs) can reformulate queries to capture complex…

Information Retrieval · Computer Science 2025-10-29 Yichi Zhang , Jun Bai , Zhixin Cai , Shuhan Qin , Zhuofan Chen , Jinghua Guan , Wenge Rong

Numerous retrieval models, including sparse, dense and llm-based methods, have demonstrated remarkable performance in predicting the relevance between queries and corpora. However, the preliminary effectiveness analysis experiments indicate…

Information Retrieval · Computer Science 2024-12-17 Tian-Yi Che , Xian-Ling Mao , Chun Xu , Cheng-Xin Xin , Heng-Da Xu , Jin-Yu Liu , Heyan Huang

Conversational search supports multi-turn user-system interactions to solve complex information needs. Different from the traditional single-turn ad-hoc search, conversational search encounters a more challenging problem of…

Information Retrieval · Computer Science 2024-07-30 Fengran Mo , Chen Qu , Kelong Mao , Yihong Wu , Zhan Su , Kaiyu Huang , Jian-Yun Nie

DEtection TRansformer (DETR) for object detection reaches competitive performance compared with Faster R-CNN via a transformer encoder-decoder architecture. However, trained with scratch transformers, DETR needs large-scale training data…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Zhigang Dai , Bolun Cai , Yugeng Lin , Junying Chen

This paper summarizes our work on the first track of the ninth Dialog System Technology Challenge (DSTC 9), "Beyond Domain APIs: Task-oriented Conversational Modeling with Unstructured Knowledge Access". The goal of the task is to generate…

Computation and Language · Computer Science 2021-02-10 David Thulke , Nico Daheim , Christian Dugast , Hermann Ney

This study introduces Knowledge Augmented Question Generation (KAQG), an educational assessment framework that integrates Item Response Theory, abbreviated as IRT, Bloom's Taxonomy, and knowledge graphs into a multi-agent…

Information Retrieval · Computer Science 2025-09-30 Ching Han Chen , Ming Fang Shiu

The main challenge for small object detection algorithms is to ensure accuracy while pursuing real-time performance. The RT-DETR model performs well in real-time object detection, but performs poorly in small object detection accuracy. In…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Ji Huang , Hui Wang

We present in this paper a novel denoising training method to speedup DETR (DEtection TRansformer) training and offer a deepened understanding of the slow convergence issue of DETR-like methods. We show that the slow convergence results…

Computer Vision and Pattern Recognition · Computer Science 2022-12-09 Feng Li , Hao Zhang , Shilong Liu , Jian Guo , Lionel M. Ni , Lei Zhang

Automatic Vehicle Detection (AVD) in diverse driving environments presents unique challenges due to varying lighting conditions, road types, and vehicle types. Traditional methods, such as YOLO and Faster R-CNN, often struggle to cope with…

Computer Vision and Pattern Recognition · Computer Science 2025-02-26 Istiaq Ahmed Fahad , Abdullah Ibne Hanif Arean , Nazmus Sakib Ahmed , Mahmudul Hasan

In multi-stage recommender systems, reranking optimizes overall utility by capturing intra-list contextual dependencies, yet its central challenge lies in exploring optimal sequences within an exponentially large permutation space. Recent…

Information Retrieval · Computer Science 2026-05-26 Chaotian Song , Jingyao Zhang , Chenghao Chen , Zisen Sang , Dehai Zhao , Guodong Cao , Boxi Wu , Deng Cai , Jia Jia