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This work proposes TimeChat, a time-sensitive multimodal large language model specifically designed for long video understanding. Our model incorporates two key architectural contributions: (1) a timestamp-aware frame encoder that binds…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Shuhuai Ren , Linli Yao , Shicheng Li , Xu Sun , Lu Hou

Much of model-based reinforcement learning involves learning a model of an agent's world, and training an agent to leverage this model to perform a task more efficiently. While these models are demonstrably useful for agents, every…

Neural and Evolutionary Computing · Computer Science 2019-11-01 C. Daniel Freeman , Luke Metz , David Ha

In recent years, Model-based Multi-Agent Reinforcement Learning (MARL) has demonstrated significant advantages over model-free methods in terms of sample efficiency by using independent environment dynamics world models for data sample…

Multiagent Systems · Computer Science 2025-01-20 Zifeng Shi , Meiqin Liu , Senlin Zhang , Ronghao Zheng , Shanling Dong , Ping Wei

In this paper, we propose a novel approach for generalized zero-shot learning in a multi-modal setting, where we have novel classes of audio/video during testing that are not seen during training. We use the semantic relatedness of text…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Pratik Mazumder , Pravendra Singh , Kranti Kumar Parida , Vinay P. Namboodiri

Recent research in the field of computer vision strongly focuses on deep learning architectures to tackle image processing problems. Deep neural networks are often considered in complex image processing scenarios since traditional computer…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Marcel P. Schilling , Luca Rettenberger , Friedrich Münke , Haijun Cui , Anna A. Popova , Pavel A. Levkin , Ralf Mikut , Markus Reischl

Characterizing and quantifying gender representation disparities in audiovisual storytelling contents is necessary to grasp how stereotypes may perpetuate on screen. In this article, we consider the high-level construct of objectification…

This paper proposes a novel training scheme for fast matching models in Search Ads, which is motivated by the real challenges in model training. The first challenge stems from the pursuit of high throughput, which prohibits the deployment…

Information Retrieval · Computer Science 2019-04-23 Xue Li , Zhipeng Luo , Hao Sun , Jianjin Zhang , Weihao Han , Xianqi Chu , Liangjie Zhang , Qi Zhang

Many real-world applications require automated data annotation, such as identifying tissue origins based on gene expressions and classifying images into semantic categories. Annotation classes are often numerous and subject to changes over…

Computation and Language · Computer Science 2018-07-03 Maxim Grechkin , Hoifung Poon , Bill Howe

The scaling up of deep neural networks has been demonstrated to be effective in improving model quality, but also encompasses several training challenges in terms of training efficiency, programmability, and resource adaptability. We…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-06-07 Xianyan Jia , Le Jiang , Ang Wang , Wencong Xiao , Ziji Shi , Jie Zhang , Xinyuan Li , Langshi Chen , Yong Li , Zhen Zheng , Xiaoyong Liu , Wei Lin

A world model creates a surrogate world to train a controller and predict safety violations by learning the internal dynamic model of systems. However, the existing world models rely solely on statistical learning of how observations change…

Machine Learning · Computer Science 2024-05-06 Zhenjiang Mao , Siqi Dai , Yuang Geng , Ivan Ruchkin

We address the challenge of unsupervised mistake detection in egocentric video of skilled human activities through the analysis of gaze signals. While traditional methods rely on manually labeled mistakes, our approach does not require…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Michele Mazzamuto , Antonino Furnari , Yoichi Sato , Giovanni Maria Farinella

Gaze estimation methods commonly use facial appearances to predict the direction of a person gaze. However, previous studies show three major challenges with convolutional neural network (CNN)-based, transformer-based, and contrastive…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Xinyuan Zhao , Yihang Wu , Ahmad Chaddad , Sarah A. Alkhodair , Reem Kateb

Given a natural language query, video moment retrieval aims to localize the described temporal moment in an untrimmed video. A major challenge of this task is its heavy dependence on labor-intensive annotations for training. Unlike existing…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Peijun Bao , Chenqi Kong , Zihao Shao , Boon Poh Ng , Meng Hwa Er , Alex C. Kot

World models are widely explored in embodied intelligence, yet they typically predict distinct evolutions of the world and the ego within a single stream, where the world captures persistent instruction-agnostic scene regularities and the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Zuyao Lin , Jianhui Zhang , Peidong Jia , Xiaoguang Zhao , Shanghang Zhang , Xingyu Chen

Recent advances in learning aligned multimodal representations have been primarily driven by training large neural networks on massive, noisy paired-modality datasets. In this work, we ask whether it is possible to achieve similar results…

Machine Learning · Computer Science 2022-10-11 Elan Rosenfeld , Preetum Nakkiran , Hadi Pouransari , Oncel Tuzel , Fartash Faghri

Pretraining on noisy, internet-scale datasets has been heavily studied as a technique for training models with broad, general capabilities for text, images, and other modalities. However, for many sequential decision domains such as…

Machine Learning · Computer Science 2022-06-24 Bowen Baker , Ilge Akkaya , Peter Zhokhov , Joost Huizinga , Jie Tang , Adrien Ecoffet , Brandon Houghton , Raul Sampedro , Jeff Clune

We propose a method for annotating videos of complex multi-object scenes with a globally-consistent 3D representation of the objects. We annotate each object with a CAD model from a database, and place it in the 3D coordinate frame of the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Kevis-Kokitsi Maninis , Stefan Popov , Matthias Nießner , Vittorio Ferrari

Learning to infer labels in an open world, i.e., in an environment where the target "labels" are unknown, is an important characteristic for achieving autonomy. Foundation models pre-trained on enormous amounts of data have shown remarkable…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Sanjoy Kundu , Shubham Trehan , Sathyanarayanan N. Aakur

Eliminating time-consuming post-production processes and delivering high-quality videos in today's fast-paced digital landscape are the key advantages of real-time approaches. To address these needs, we present Real Time GAZED: a real-time…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Sudheer Achary , Rohit Girmaji , Adhiraj Anil Deshmukh , Vineet Gandhi

We present an audio-visual multimodal approach for the task of zeroshot learning (ZSL) for classification and retrieval of videos. ZSL has been studied extensively in the recent past but has primarily been limited to visual modality and to…

Computer Vision and Pattern Recognition · Computer Science 2019-10-22 Kranti Kumar Parida , Neeraj Matiyali , Tanaya Guha , Gaurav Sharma