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We address the problem of temporal localization of repetitive activities in a video, i.e., the problem of identifying all segments of a video that contain some sort of repetitive or periodic motion. To do so, the proposed method represents…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Giorgos Karvounas , Iason Oikonomidis , Antonis Argyros

Sketch-based query formulation is very common in image and video retrieval as these techniques often complement textual retrieval methods that are based on either manual or machine generated annotations. In this paper, we present a…

Multimedia · Computer Science 2019-09-30 Luca Rossetto , Ralph Gasser , Heiko Schuldt

With the increasing amount of data and use of computation in science, software has become an important component in many different domains. Computing is now being used more often and in more aspects of scientific work including data…

Software Engineering · Computer Science 2013-12-17 David Koop , Juliana Freire , Claudio T. Silva

Nowadays, more and more people use the Web as their primary source of up-to-date information. In this context, fast crawling and indexing of newly created Web pages has become crucial for search engines, especially because user traffic to a…

Information Retrieval · Computer Science 2013-07-25 Damien Lefortier , Liudmila Ostroumova , Egor Samosvat , Pavel Serdyukov

Graph neural networks (GNNs), as a group of powerful tools for representation learning on irregular data, have manifested superiority in various downstream tasks. With unstructured texts represented as concept maps, GNNs can be exploited…

Information Retrieval · Computer Science 2022-01-14 Hejie Cui , Jiaying Lu , Yao Ge , Carl Yang

Procedural activity understanding requires perceiving human actions in terms of a broader task, where multiple keysteps are performed in sequence across a long video to reach a final goal state -- such as the steps of a recipe or a DIY…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Kumar Ashutosh , Santhosh Kumar Ramakrishnan , Triantafyllos Afouras , Kristen Grauman

Most of the textual information available to us are temporally variable. In a world where information is dynamic, time-stamping them is a very important task. Documents are a good source of information and are used for many tasks like,…

Computation and Language · Computer Science 2021-06-29 Swayambhu Nath Ray

Many users struggle to notice when a more efficient workflow exists in feature-rich tools like Excel. Existing AI assistants offer help only after users describe their goals or problems, which can be effortful and imprecise. We present…

Human-Computer Interaction · Computer Science 2026-04-23 Litao Yan , Andrew Head , Ken Milne , Vu Le , Sumit Gulwani , Chris Parnin , Emerson Murphy-Hill

This paper challenges a cross-genre document retrieval task, where the queries are in formal writing and the target documents are in conversational writing. In this task, a query, is a sentence extracted from either a summary or a plot of…

Computation and Language · Computer Science 2017-07-17 Tomasz Jurczyk , Jinho D. Choi

Advanced internet technologies providing services like e-mail, social networking, online banking, online shopping etc., have made day-to-day activities simple and convenient. Increasing dependency on the internet, convenience, and…

Cryptography and Security · Computer Science 2012-09-18 Ipsita Mohanty , R. Leela Velusamy

Retrieval of live, user-broadcast video streams is an under-addressed and increasingly relevant challenge. The on-line nature of the problem requires temporal evaluation and the unforeseeable scope of potential queries motivates an approach…

Information Retrieval · Computer Science 2016-12-21 Spencer Cappallo , Thomas Mensink , Cees G. M. Snoek

Numerous video frame sampling methodologies detailed in the literature present a significant challenge in determining the optimal video frame method for Video RAG pattern without a comparative side-by-side analysis. In this work, we…

Multimedia · Computer Science 2024-08-08 Mahesh Kandhare , Thibault Gisselbrecht

The ability for computational agents to reason about the high-level content of real world scene images is important for many applications. Existing attempts at addressing the problem of complex scene understanding lack representational…

Computer Vision and Pattern Recognition · Computer Science 2018-02-20 Zachary A. Daniels , Dimitris N. Metaxas

The query-based moment retrieval is a problem of localising a specific clip from an untrimmed video according a query sentence. This is a challenging task that requires interpretation of both the natural language query and the video…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Mayu Otani , Yuta Nakashima , Esa Rahtu , Janne Heikkilä

We introduce SemanticLock, a single factor graphical authentication solution for mobile devices. SemanticLock uses a set of graphical images as password tokens that construct a semantically memorable story representing the user`s password.…

Cryptography and Security · Computer Science 2019-10-11 Ilesanmi Olade , Haining Liang , Charles Fleming

Accurately recognizing a revisited place is crucial for embodied agents to localize and navigate. This requires visual representations to be distinct, despite strong variations in camera viewpoint and scene appearance. Existing visual place…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Kartik Garg , Sai Shubodh Puligilla , Shishir Kolathaya , Madhava Krishna , Sourav Garg

With ever increasing computing power and data storage capacity, the potential for large digital video libraries is growing rapidly.However, the massive use of video for the moment is limited by its opaque characteristics. Indeed, a user who…

Computer Vision and Pattern Recognition · Computer Science 2014-12-16 Walid Mahdi , Liming Chen , Mohsen Ardebilian

In recent years, predicting the user's next request in web navigation has received much attention. An information source to be used for dealing with such problem is the left information by the previous web users stored at the web access log…

Machine Learning · Computer Science 2010-04-28 Heidar Mamosian , Amir Masoud Rahmani , Mashalla Abbasi Dezfouli

We propose a novel end-to-end solution that performs a Hierarchical Layout Analysis of screenshots and document images on resource constrained devices like mobilephones. Our approach segments entities like Grid, Image, Text and Icon blocks…

Computer Vision and Pattern Recognition · Computer Science 2021-04-22 Manoj Goyal , Rachit S Munjal , Sukumar Moharana , Deepak Garg , Debi Prasanna Mohanty , Siva Prasad Thota

In recent years there has been widespread concern in the scientific community over a reproducibility crisis. Among the major causes that have been identified is statistical: In many scientific research the statistical analysis (including…

Applications · Statistics 2017-08-17 Norman Matloff , Reed Davis , Laurel Beckett , Paul Thompson