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Novelty detection in text streams is a challenging task that emerges in quite a few different scenarios, ranging from email thread filtering to RSS news feed recommendation on a smartphone. An efficient novelty detection algorithm can save…

Information Retrieval · Computer Science 2014-11-11 Margarita Karkali , Francois Rousseau , Alexandros Ntoulas , Michalis Vazirgiannis

We present a new machine learning and text information extraction approach to detection of cyber threat events in Twitter that are novel (previously non-extant) and developing (marked by significance with respect to similarity with a…

Information Retrieval · Computer Science 2019-07-19 Avishek Bose , Vahid Behzadan , Carlos Aguirre , William H. Hsu

With the rapid growth of online information, the spread of fake news has become a serious social challenge. In this study, we propose a novel detection framework based on Large Language Models (LLMs) to identify and classify fake news by…

Computation and Language · Computer Science 2025-01-22 Xiaochuan Xu , Peiyang Yu , Zeqiu Xu , Jiani Wang

Kterm Hashing provides an innovative approach to novelty detection on massive data streams. Previous research focused on maximizing the efficiency of Kterm Hashing and succeeded in scaling First Story Detection to Twitter-size data stream…

Information Retrieval · Computer Science 2022-08-03 Dominik Wurzer , Yumeng Qin

In this era of Big Data, due to expeditious exchange of information on the web, words are being used to denote newer meanings, causing linguistic shift. With the recent availability of large amounts of digitized texts, an automated analysis…

Computation and Language · Computer Science 2018-12-17 Abhik Jana , Animesh Mukherjee , Pawan Goyal

Since datasets with annotation for novelty at the document and/or word level are not easily available, we present a simulation framework that allows us to create different textual datasets in which we control the way novelty occurs. We also…

Machine Learning · Computer Science 2019-09-12 Clément Christophe , Julien Velcin , Jairo Cugliari , Philippe Suignard , Manel Boumghar

Detecting novelty of an entire document is an Artificial Intelligence (AI) frontier problem that has widespread NLP applications, such as extractive document summarization, tracking development of news events, predicting impact of scholarly…

Computation and Language · Computer Science 2018-02-21 Tirthankar Ghosal , Amitra Salam , Swati Tiwari , Asif Ekbal , Pushpak Bhattacharyya

Due to the complexity of modern computer systems, novel and unexpected behaviors frequently occur. Such deviations are either normal occurrences, such as software updates and new user activities, or abnormalities, such as misconfigurations,…

Machine Learning · Computer Science 2023-09-06 Quentin Fournier , Daniel Aloise , Leandro R. Costa

Recent research in novelty detection focuses mainly on document-level classification, employing deep neural networks (DNN). However, the black-box nature of DNNs makes it difficult to extract an exact explanation of why a document is…

Computation and Language · Computer Science 2021-05-12 Bimal Bhattarai , Ole-Christoffer Granmo , Lei Jiao

Current approaches to novelty or anomaly detection are based on deep neural networks. Despite their effectiveness, neural networks are also vulnerable to imperceptible deformations of the input data. This is a serious issue in critical…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Ranya Almohsen , Shivang Patel , Donald A. Adjeroh , Gianfranco Doretto

Detecting important events in high volume news streams is an important task for a variety of purposes.The volume and rate of online news increases the need for automated event detection methods thatcan operate in real time. In this paper we…

Social and Information Networks · Computer Science 2020-05-29 Iraklis Moutidis , Hywel T. P. Williams

This paper studies the problem of detecting novel or unexpected instances in text classification. In traditional text classification, the classes appeared in testing must have been seen in training. However, in many applications, this is…

Machine Learning · Computer Science 2020-09-24 Qi Qin , Wenpeng Hu , Bing Liu

Fake news travels at unprecedented speeds, reaches global audiences and puts users and communities at great risk via social media platforms. Deep learning based models show good performance when trained on large amounts of labeled data on…

Information Retrieval · Computer Science 2021-06-28 Yaqing Wang , Fenglong Ma , Haoyu Wang , Kishlay Jha , Jing Gao

The growing societal dependence on social media and user generated content for news and information has increased the influence of unreliable sources and fake content, which muddles public discourse and lessens trust in the media.…

Computation and Language · Computer Science 2022-09-07 Marjan Hosseini , Alireza Javadian Sabet , Suining He , Derek Aguiar

LLM-based conversational systems have become a popular gateway for information access, yet most existing chatbots struggle to handle news-related trending queries effectively. To improve user experience, an effective trending query…

Information Retrieval · Computer Science 2026-01-12 Kaichun Wang , Yanguang Chen , Ting Zhang , Mengyao Bao , Keyu Chen , Xu Hu , Yongliang Wang , Jingsheng Yang , Jinsong Zhang , Fei Lu

Topic Detection and Tracking (TDT) is a very active research question within the area of text mining, generally applied to news feeds and Twitter datasets, where topics and events are detected. The notion of "event" is broad, but typically…

Software Engineering · Computer Science 2021-03-25 A. Sokolovsky , T. Gross , J. Bacardit

With the rapid development of social media such as Twitter and Weibo, detecting keywords from a huge volume of text data streams in real-time has become a critical problem. The keyword detection problem aims at searching important…

Computation and Language · Computer Science 2023-07-04 Yifei Yue

The significance of social media has increased manifold in the past few decades as it helps people from even the most remote corners of the world to stay connected. With the advent of technology, digital media has become more relevant and…

Computation and Language · Computer Science 2021-12-14 Sourya Dipta Das , Ayan Basak , Saikat Dutta

A common assumption of novelty detection is that the distribution of both "normal" and "novel" data are static. This, however, is often not the case - for example scenarios where data evolves over time or scenarios in which the definition…

Machine Learning · Computer Science 2020-12-08 Ellen Rushe , Brian Mac Namee

Scene text detection is a challenging problem in computer vision. In this paper, we propose a novel text detection network based on prevalent object detection frameworks. In order to obtain stronger semantic feature, we adopt ResNet as…

Computer Vision and Pattern Recognition · Computer Science 2017-11-15 Xiangyu Zhu , Yingying Jiang , Shuli Yang , Xiaobing Wang , Wei Li , Pei Fu , Hua Wang , Zhenbo Luo
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