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Social media is becoming a primary medium to discuss what is happening around the world. Therefore, the data generated by social media platforms contain rich information which describes the ongoing events. Further, the timeliness associated…

Information Retrieval · Computer Science 2021-05-27 Hansi Hettiarachchi , Mariam Adedoyin-Olowe , Jagdev Bhogal , Mohamed Medhat Gaber

Recently, regression-based methods, which predict parameterized text shapes for text localization, have gained popularity in scene text detection. However, the existing parameterized text shape methods still have limitations in modeling…

Computer Vision and Pattern Recognition · Computer Science 2024-01-25 Yuchen Su , Zhineng Chen , Zhiwen Shao , Yuning Du , Zhilong Ji , Jinfeng Bai , Yong Zhou , Yu-Gang Jiang

State-of-the-art automatic event detection struggles with interpretability and adaptability to evolving large-scale key events -- unlike episodic structures, which excel in these areas. Often overlooked, episodes represent cohesive clusters…

Computation and Language · Computer Science 2025-06-10 Priyanka Kargupta , Yunyi Zhang , Yizhu Jiao , Siru Ouyang , Jiawei Han

Extracting topics from text has become an essential task, especially with the rapid growth of unstructured textual data. Most existing works rely on highly computational methods to address this challenge. In this paper, we argue that…

Computation and Language · Computer Science 2025-11-07 Salma Mekaoui , Hiba Sofyan , Imane Amaaz , Imane Benchrif , Arsalane Zarghili , Ilham Chaker , Nikola S. Nikolov

Recently proliferated deep learning-based semantic communications (DLSC) focus on how transmitted symbols efficiently convey a desired meaning to the destination. However, the sensitivity of neural models and the openness of wireless…

Cryptography and Security · Computer Science 2024-12-02 Yankai Rong , Guoshun Nan , Minwei Zhang , Sihan Chen , Songtao Wang , Xuefei Zhang , Nan Ma , Shixun Gong , Zhaohui Yang , Qimei Cui , Xiaofeng Tao , Tony Q. S. Quek

We introduce the novel task of detecting sustainability initiatives in company reports. Given a full report, the aim is to automatically identify mentions of practical activities that a company has performed in order to tackle specific…

Computation and Language · Computer Science 2022-03-07 Dan Hirlea , Christopher Bryant , Maurizio Zollo , Marek Rei

The widespread adoption of large language models (LLMs) has created an urgent need for robust tools to detect LLM-generated text, especially in light of \textit{paraphrasing} techniques that often evade existing detection methods. To…

Computation and Language · Computer Science 2024-11-21 Weiqing He , Bojian Hou , Tianqi Shang , Davoud Ataee Tarzanagh , Qi Long , Li Shen

In the past decade, the usage of mobile devices has gone far beyond simple activities like calling and texting. Today, smartphones contain multiple embedded sensors and are able to collect useful sensing data about the user and infer the…

Machine Learning · Computer Science 2019-03-14 Saar Tal , Bracha Shapira , Lior Rokach

Despite the predominance of contextualized embeddings in NLP, approaches to detect semantic change relying on these embeddings and clustering methods underperform simpler counterparts based on static word embeddings. This stems from the…

Computation and Language · Computer Science 2024-02-05 Xianghe Ma , Michael Strube , Wei Zhao

Sign spotting, the task of identifying and localizing individual signs within continuous sign language video, plays a pivotal role in scaling dataset annotations and addressing the severe data scarcity issue in sign language translation.…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 JianHe Low , Ozge Mercanoglu Sincan , Richard Bowden

Loop detection plays a key role in visual Simultaneous Localization and Mapping (SLAM) by correcting the accumulated pose drift. In indoor scenarios, the richly distributed semantic landmarks are view-point invariant and hold strong…

Computer Vision and Pattern Recognition · Computer Science 2023-05-25 Chuhao Liu , Shaojie Shen

While wearable cameras are becoming increasingly popular, locating relevant information in large unstructured collections of egocentric images is still a tedious and time consuming processes. This paper addresses the problem of organizing…

Artificial Intelligence · Computer Science 2016-11-03 Mariella Dimiccoli , Marc Bolaños , Estefania Talavera , Maedeh Aghaei , Stavri G. Nikolov , Petia Radeva

In this paper, we introduces a new type of line-shaped image representation, named semantic line segment (Sem-LS) and focus on solving its detection problem. Sem-LS contains high-level semantics and is a compact scene representation where…

Computer Vision and Pattern Recognition · Computer Science 2020-01-01 Yi Sun , Xushen Han , Kai Sun , Boren Li , Yongjiang Chen , Mingyang Li

We introduce SELECT (Scene tExt Label Errors deteCTion), a novel approach that leverages multi-modal training to detect label errors in real-world scene text datasets. Utilizing an image-text encoder and a character-level tokenizer, SELECT…

Computer Vision and Pattern Recognition · Computer Science 2025-12-17 Wenjun Liu , Qian Wu , Yifeng Hu , Yuke Li

State-of-the-art text spotting systems typically aim to detect isolated words or word-by-word text in images of natural scenes and ignore the semantic coherence within a region of text. However, when interpreted together, seemingly isolated…

Computer Vision and Pattern Recognition · Computer Science 2019-12-11 Yi Zheng , Qitong Wang , Margrit Betke

Detecting lexical semantic change in smaller data sets, e.g. in historical linguistics and digital humanities, is challenging due to a lack of statistical power. This issue is exacerbated by non-contextual embedding models that produce one…

Computation and Language · Computer Science 2022-02-23 Yang Liu , Alan Medlar , Dorota Glowacka

Event detection has been one of the most important research topics in social media analysis. Most of the traditional approaches detect events based on fixed temporal and spatial resolutions, while in reality events of different scales…

Social and Information Networks · Computer Science 2015-08-31 Xiaowen Dong , Dimitrios Mavroeidis , Francesco Calabrese , Pascal Frossard

Side-channel attacks exploit unintended information leakage from system behavior and continue to pose serious privacy risks in modern platforms. Despite extensive prior work, side-channel analysis remains largely manual and fragmented,…

Cryptography and Security · Computer Science 2026-05-19 Zhen Xu , Zihao Wang , Yuhua Sun , XiaoFeng Wang

In this paper, we study the problem of image-text matching. Inferring the latent semantic alignment between objects or other salient stuff (e.g. snow, sky, lawn) and the corresponding words in sentences allows to capture fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2018-07-24 Kuang-Huei Lee , Xi Chen , Gang Hua , Houdong Hu , Xiaodong He

Given a stream of heterogeneous graphs containing different types of nodes and edges, how can we spot anomalous ones in real-time while consuming bounded memory? This problem is motivated by and generalizes from its application in security…

Social and Information Networks · Computer Science 2016-02-23 Emaad A. Manzoor , Sadegh Momeni , Venkat N. Venkatakrishnan , Leman Akoglu