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We propose a novel method for temporally pooling frames in a video for the task of human action recognition. The method is motivated by the observation that there are only a small number of frames which, together, contain sufficient…

Computer Vision and Pattern Recognition · Computer Science 2017-06-27 Amlan Kar , Nishant Rai , Karan Sikka , Gaurav Sharma

Predicting the relevance between two given videos with respect to their visual content is a key component for content-based video recommendation and retrieval. Thanks to the increasing availability of pre-trained image and video…

Computer Vision and Pattern Recognition · Computer Science 2020-04-09 Jianfeng Dong , Xun Wang , Leimin Zhang , Chaoxi Xu , Gang Yang , Xirong Li

In this paper, we propose a user-based video indexing method, that automatically generates thumbnails of the most important scenes of an online video stream, by analyzing users' interactions with a web video player. As a test bench to…

Multimedia · Computer Science 2018-04-17 Ioannis Leftheriotis , Chrysoula Gkonela , Konstantinos Chorianopoulos

Known-item video search is effective with human-in-the-loop to interactively investigate the search result and refine the initial query. Nevertheless, when the first few pages of results are swamped with visually similar items, or the…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Zhixin Ma , Chong-Wah Ngo

In general, recommender systems are designed to provide personalized items to a user. But in few cases, items are recommended for a group, and the challenge is to aggregate the individual user preferences to infer the recommendation to a…

Information Retrieval · Computer Science 2021-07-16 Chintoo Kumar , C. Ravindranath Chowdary

Although deep learning approaches have achieved performance surpassing humans for still image-based face recognition, unconstrained video-based face recognition is still a challenging task due to large volume of data to be processed and…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Jingxiao Zheng , Rajeev Ranjan , Ching-Hui Chen , Jun-Cheng Chen , Carlos D. Castillo , Rama Chellappa

Cluster-based algorithm selection deals with selecting recommendation algorithms on clusters of users to obtain performance gains. No studies have been attempted for many combinations of clustering approaches and recommendation algorithms.…

Information Retrieval · Computer Science 2024-05-29 Andreas Lizenberger , Ferdinand Pfeifer , Bastian Polewka

Face clustering tasks can learn hierarchical semantic information from large-scale data, which has the potential to help facilitate face recognition. However, there are few works on this problem. This paper explores it by proposing a joint…

Computer Vision and Pattern Recognition · Computer Science 2023-12-08 Zhenduo Zhang

We present a content-based method for recommending citations in an academic paper draft. We embed a given query document into a vector space, then use its nearest neighbors as candidates, and rerank the candidates using a discriminative…

Computation and Language · Computer Science 2018-02-26 Chandra Bhagavatula , Sergey Feldman , Russell Power , Waleed Ammar

Self-supervised methods have significantly closed the gap with end-to-end supervised learning for image classification. In the case of human action videos, however, where both appearance and motion are significant factors of variation, this…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Salar Hosseini Khorasgani , Yuxuan Chen , Florian Shkurti

We propose a novel agglomerative clustering method based on unmasking, a technique that was previously used for authorship verification of text documents and for abnormal event detection in videos. In order to join two clusters, we…

Computer Vision and Pattern Recognition · Computer Science 2019-05-03 Mariana-Iuliana Georgescu , Radu Tudor Ionescu

It is today accepted that matrix factorization models allow a high quality of rating prediction in recommender systems. However, a major drawback of matrix factorization is its static nature that results in a progressive declining of the…

Machine Learning · Computer Science 2012-12-05 Modou Gueye , Talel Abdessalem , Hubert Naacke

Clustering is one of the most fundamental tasks in machine learning. Recently, deep clustering has become a major trend in clustering techniques. Representation learning often plays an important role in the effectiveness of deep clustering,…

Machine Learning · Computer Science 2021-06-02 Yaling Tao , Kentaro Takagi , Kouta Nakata

Online video web content is richly multimodal: a single video blends vision, speech, ambient audio, and on-screen text. Retrieval systems typically treat these modalities as independent retrieval sources, which can lead to noisy and subpar…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 David Wan , Han Wang , Elias Stengel-Eskin , Jaemin Cho , Mohit Bansal

Thumbnail is the face of online videos. The explosive growth of videos both in number and variety underpins the importance of a good thumbnail because it saves potential viewers time to choose videos and even entice them to click on them. A…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Zhifeng Yu , Nanchun Shi

Recent advances in artificial intelligence make it progressively hard to distinguish between genuine and counterfeit media, especially images and videos. One recent development is the rise of deepfake videos, based on manipulating videos…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Rashmiranjan Das , Gaurav Negi , Alan F. Smeaton

Current deep learning results on video generation are limited while there are only a few first results on video prediction and no relevant significant results on video completion. This is due to the severe ill-posedness inherent in these…

Computer Vision and Pattern Recognition · Computer Science 2018-12-24 Haoye Cai , Chunyan Bai , Yu-Wing Tai , Chi-Keung Tang

With the rapid growth of video data on the internet, video summarization is becoming a very important AI technology. However, due to the high labelling cost of video summarization, existing studies have to be conducted on small-scale…

Multimedia · Computer Science 2026-01-13 Cairong Zhao , Chutian Wang , Zifan Song , Guosheng Hu , Haonan Chen , Xiaofan Zhai

Due to the amount of videos and related captions uploaded every hour, deep learning-based solutions for cross-modal video retrieval are attracting more and more attention. A typical approach consists in learning a joint text-video embedding…

Computer Vision and Pattern Recognition · Computer Science 2022-03-17 Alex Falcon , Giuseppe Serra , Oswald Lanz

Predicting if a person is an adult or a minor has several applications such as inspecting underage driving, preventing purchase of alcohol and tobacco by minors, and granting restricted access. The challenging nature of this problem arises…

Computer Vision and Pattern Recognition · Computer Science 2018-03-21 Maneet Singh , Shruti Nagpal , Mayank Vatsa , Richa Singh