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We present a method for learning word meanings from complex and realistic video clips by discriminatively training (DT) positive sentential labels against negative ones, and then use the trained word models to generate sentential…

计算机视觉与模式识别 · 计算机科学 2013-06-25 Haonan Yu , Jeffrey Mark Siskind

Self-supervised approaches for video have shown impressive results in video understanding tasks. However, unlike early works that leverage temporal self-supervision, current state-of-the-art methods primarily rely on tasks from the image…

计算机视觉与模式识别 · 计算机科学 2023-12-21 Ishan Rajendrakumar Dave , Simon Jenni , Mubarak Shah

Instruction tuning on a mixture of tasks has improved zero-shot capabilities in natural language processing (NLP). Nevertheless, existing methods often learn features that exhibit correlations between instruction-formatted samples and…

计算与语言 · 计算机科学 2024-02-12 Lu Chen , Wei Huang , Ruqing Zhang , Wei Chen , Jiafeng Guo , Xueqi Cheng

While deep feature learning has revolutionized techniques for static-image understanding, the same does not quite hold for video processing. Architectures and optimization techniques used for video are largely based off those for static…

计算机视觉与模式识别 · 计算机科学 2017-12-13 Achal Dave , Olga Russakovsky , Deva Ramanan

There is growing interest in searching for information from large video corpora. Prior works have studied relevant tasks, such as text-based video retrieval, moment retrieval, video summarization, and video captioning in isolation, without…

计算机视觉与模式识别 · 计算机科学 2023-03-30 Abhay Zala , Jaemin Cho , Satwik Kottur , Xilun Chen , Barlas Oğuz , Yasher Mehdad , Mohit Bansal

Recently, methods have been developed to improve the performance of dense passage retrieval by using context-supervised pre-training. These methods simply consider two passages from the same document to be relevant, without taking into…

信息检索 · 计算机科学 2023-10-17 Xing Wu , Guangyuan Ma , Wanhui Qian , Zijia Lin , Songlin Hu

In low-level video analyses, effective representations are important to derive the correspondences between video frames. These representations have been learned in a self-supervised fashion from unlabeled images or videos, using carefully…

计算机视觉与模式识别 · 计算机科学 2023-06-23 Rui Li , Dong Liu

Dense document embeddings are central to neural retrieval. The dominant paradigm is to train and construct embeddings by running encoders directly on individual documents. In this work, we argue that these embeddings, while effective, are…

计算与语言 · 计算机科学 2024-11-11 John X. Morris , Alexander M. Rush

Sparse annotation poses persistent challenges to training dense retrieval models; for example, it distorts the training signal when unlabeled relevant documents are used spuriously as negatives in contrastive learning. To alleviate this…

信息检索 · 计算机科学 2023-10-24 George Zerveas , Navid Rekabsaz , Carsten Eickhoff

This paper investigates context stickiness in in-context learning (ICL), a phenomenon where earlier examples in a prompt interfere with a transformer's ability to adapt to later tasks. Using synthetic regression tasks over linear and…

机器学习 · 计算机科学 2026-04-28 Hanna Rød , Dagny Streit , Nils Valseth Selte , Justin Li

Natural language processing models often exploit spurious correlations between task-independent features and labels in datasets to perform well only within the distributions they are trained on, while not generalising to different task…

计算与语言 · 计算机科学 2022-03-25 Yuxiang Wu , Matt Gardner , Pontus Stenetorp , Pradeep Dasigi

The attention-based encoder-decoder framework has recently achieved impressive results for scene text recognition, and many variants have emerged with improvements in recognition quality. However, it performs poorly on contextless texts…

计算机视觉与模式识别 · 计算机科学 2020-07-20 Xiaoyu Yue , Zhanghui Kuang , Chenhao Lin , Hongbin Sun , Wayne Zhang

Query-based moment retrieval aims to localize the most relevant moment in an untrimmed video according to the given natural language query. Existing works often only focus on one aspect of this emerging task, such as the query…

信息检索 · 计算机科学 2019-07-30 Zhu Zhang , Zhijie Lin , Zhou Zhao , Zhenxin Xiao

Video Moment Retrieval (VMR) aims to localize a specific temporal segment within an untrimmed long video given a natural language query. Existing methods often suffer from inadequate training annotations, i.e., the sentence typically…

计算机视觉与模式识别 · 计算机科学 2024-06-27 Weitong Cai , Jiabo Huang , Shaogang Gong , Hailin Jin , Yang Liu

Accurately retrieving relevant bid keywords for user queries is critical in Sponsored Search but remains challenging, particularly for short, ambiguous queries. Existing dense and generative retrieval models often fail to capture nuanced…

信息检索 · 计算机科学 2024-10-21 Akash Kumar Mohankumar , Gururaj K , Gagan Madan , Amit Singh

Harmful text detection has become a crucial task in the development and deployment of large language models, especially as AI-generated content continues to expand across digital platforms. This study proposes a joint retrieval framework…

计算与语言 · 计算机科学 2025-04-04 Zidong Yu , Shuo Wang , Nan Jiang , Weiqiang Huang , Xu Han , Junliang Du

Unsupervised domain adaptation which aims to adapt models trained on a labeled source domain to a completely unlabeled target domain has attracted much attention in recent years. While many domain adaptation techniques have been proposed…

计算机视觉与模式识别 · 计算机科学 2021-10-29 Aadarsh Sahoo , Rutav Shah , Rameswar Panda , Kate Saenko , Abir Das

Causal discovery is at the core of human cognition. It enables us to reason about the environment and make counterfactual predictions about unseen scenarios that can vastly differ from our previous experiences. We consider the task of…

机器学习 · 计算机科学 2020-12-01 Yunzhu Li , Antonio Torralba , Animashree Anandkumar , Dieter Fox , Animesh Garg

Unimodal vision models are known to rely on spurious correlations, but it remains unclear to what extent Multimodal Large Language Models (MLLMs) exhibit similar biases despite language supervision. In this paper, we investigate spurious…

计算机视觉与模式识别 · 计算机科学 2025-12-16 Parsa Hosseini , Sumit Nawathe , Mazda Moayeri , Sriram Balasubramanian , Soheil Feizi

With the rapid development of vision tasks and the scaling on datasets and models, redundancy reduction in vision datasets has become a key area of research. To address this issue, dataset distillation (DD) has emerged as a promising…

计算机视觉与模式识别 · 计算机科学 2025-06-04 Yinjie Zhao , Heng Zhao , Bihan Wen , Yew-Soon Ong , Joey Tianyi Zhou
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