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Open-domain question answering (QA) tasks usually require the retrieval of relevant information from a large corpus to generate accurate answers. We propose a novel approach called Generator-Retriever-Generator (GRG) that combines document…

Computation and Language · Computer Science 2024-03-27 Abdelrahman Abdallah , Adam Jatowt

The explosive growth of video streaming presents challenges in achieving high accuracy and low training costs for video-language retrieval. However, existing methods rely on large-scale pre-training to improve video retrieval performance,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Haoyu Zhao , Jiaxi Gu , Shicong Wang , Xing Zhang , Hang Xu , Zuxuan Wu , Yu-Gang Jiang

Accelerated by the tremendous increase in Internet bandwidth and storage space, video data has been generated, published and spread explosively, becoming an indispensable part of today's big data. In this paper, we focus on reviewing two…

Computer Vision and Pattern Recognition · Computer Science 2018-02-23 Zuxuan Wu , Ting Yao , Yanwei Fu , Yu-Gang Jiang

Automatically describing video content with natural language has been attracting much attention in CV and NLP communities. Most existing methods predict one word at a time, and by feeding the last generated word back as input at the next…

Computer Vision and Pattern Recognition · Computer Science 2019-11-06 Huanhou Xiao , Jinglun Shi

Automatic generation of video captions is a fundamental challenge in computer vision. Recent techniques typically employ a combination of Convolutional Neural Networks (CNNs) and Recursive Neural Networks (RNNs) for video captioning. These…

Computer Vision and Pattern Recognition · Computer Science 2019-04-30 Nayyer Aafaq , Naveed Akhtar , Wei Liu , Syed Zulqarnain Gilani , Ajmal Mian

Web-based educational videos offer flexible learning opportunities and are becoming increasingly popular. However, improving user engagement and knowledge retention remains a challenge. Automatically generated questions can activate…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Markos Stamatakis , Joshua Berger , Christian Wartena , Ralph Ewerth , Anett Hoppe

Recent advances in vision-language models have led to impressive progress in caption generation for images and short video clips. However, these models remain constrained by their limited temporal receptive fields, making it difficult to…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Sanghyeok Chu , Seonguk Seo , Bohyung Han

This paper focuses on a novel and challenging vision task, dense video captioning, which aims to automatically describe a video clip with multiple informative and diverse caption sentences. The proposed method is trained without explicit…

Computer Vision and Pattern Recognition · Computer Science 2017-04-06 Zhiqiang Shen , Jianguo Li , Zhou Su , Minjun Li , Yurong Chen , Yu-Gang Jiang , Xiangyang Xue

One of the challenging tasks in the field of video understanding is extracting semantic content from video inputs. Most existing systems use language models to describe videos in natural language sentences, but this has several major…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Taniya Das , Louis Mahon , Thomas Lukasiewicz

We address the problem of video captioning by grounding language generation on object interactions in the video. Existing work mostly focuses on overall scene understanding with often limited or no emphasis on object interactions to address…

Computer Vision and Pattern Recognition · Computer Science 2017-11-20 Chih-Yao Ma , Asim Kadav , Iain Melvin , Zsolt Kira , Ghassan AlRegib , Hans Peter Graf

Understanding 3D scenes in open-world settings poses fundamental challenges for vision and robotics, particularly due to the limitations of closed-vocabulary supervision and static annotations. To address this, we propose a unified…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Fei Yu , Quan Deng , Shengeng Tang , Yuehua Li , Lechao Cheng

Deep neural networks have achieved great successes on the image captioning task. However, most of the existing models depend heavily on paired image-sentence datasets, which are very expensive to acquire. In this paper, we make the first…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Yang Feng , Lin Ma , Wei Liu , Jiebo Luo

Video paragraph captioning is the task of automatically generating a coherent paragraph description of the actions in a video. Previous linguistic studies have demonstrated that coherence of a natural language text is reflected by its…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Arjun R Akula , Song-Chun Zhu

It is a big challenge of computer vision to make machine automatically describe the content of an image with a natural language sentence. Previous works have made great progress on this task, but they only use the global or local image…

Computer Vision and Pattern Recognition · Computer Science 2019-04-23 Aihong Yuan , Xuelong Li , Xiaoqiang Lu

Recent advances in neural network-based generative modeling have reignited the hopes in having computer systems capable of seamlessly conversing with humans and able to understand natural language. Neural architectures have been employed to…

Computation and Language · Computer Science 2020-08-03 Cristina Garbacea , Qiaozhu Mei

Commonsense generation is a challenging task of generating a plausible sentence describing an everyday scenario using provided concepts. Its requirement of reasoning over commonsense knowledge and compositional generalization ability even…

Computation and Language · Computer Science 2021-05-25 Han Wang , Yang Liu , Chenguang Zhu , Linjun Shou , Ming Gong , Yichong Xu , Michael Zeng

Copying mechanism shows effectiveness in sequence-to-sequence based neural network models for text generation tasks, such as abstractive sentence summarization and question generation. However, existing works on modeling copying or pointing…

Computation and Language · Computer Science 2018-07-09 Qingyu Zhou , Nan Yang , Furu Wei , Ming Zhou

As the amount of audio-visual content increases, the need to develop automatic captioning and subtitling solutions to match the expectations of a growing international audience appears as the only viable way to boost throughput and lower…

Computation and Language · Computer Science 2022-05-16 Jitao Xu , François Buet , Josep Crego , Elise Bertin-Lemée , François Yvon

Among numerous videos shared on the web, well-edited ones always attract more attention. However, it is difficult for inexperienced users to make well-edited videos because it requires professional expertise and immense manual labor. To…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Yu Xiong , Fabian Caba Heilbron , Dahua Lin

Retrieval-augmented generation can improve audio captioning by incorporating relevant audio-text pairs from a knowledge base. Existing methods typically rely solely on the input audio as a unimodal retrieval query. In contrast, we propose…

Sound · Computer Science 2025-06-11 Choi Changin , Lim Sungjun , Rhee Wonjong