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Rumor source identification in large social networks has received significant attention lately. Most recent works deal with the scale of the problem by observing a subset of the nodes in the network, called sensors, to estimate the source.…

社会与信息网络 · 计算机科学 2015-09-03 Alireza Louni , Anand Santhanakrishnan , K. P. Subbalakshmi

As social media becomes a hotbed for the spread of misinformation, the crucial task of rumor detection has witnessed promising advances fostered by open-source benchmark datasets. Despite being widely used, we find that these datasets…

社会与信息网络 · 计算机科学 2022-09-20 Jiaying Wu , Bryan Hooi

The dissemination of Large Language Models (LLMs), trained at scale, and endowed with powerful text-generating abilities, has made it easier for all to produce harmful, toxic, faked or forged content. In response, various proposals have…

计算与语言 · 计算机科学 2025-06-12 Matthieu Dubois , François Yvon , Pablo Piantanida

With the increasing popularity of video sharing websites such as YouTube and Facebook, multimodal sentiment analysis has received increasing attention from the scientific community. Contrary to previous works in multimodal sentiment…

机器学习 · 计算机科学 2018-02-06 Minghai Chen , Sen Wang , Paul Pu Liang , Tadas Baltrušaitis , Amir Zadeh , Louis-Philippe Morency

In this paper, we describe how we created two state-of-the-art SVM classifiers, one to detect the sentiment of messages such as tweets and SMS (message-level task) and one to detect the sentiment of a term within a submissions stood first…

计算与语言 · 计算机科学 2013-08-29 Saif M. Mohammad , Svetlana Kiritchenko , Xiaodan Zhu

Sentiment classification involves quantifying the affective reaction of a human to a document, media item or an event. Although researchers have investigated several methods to reliably infer sentiment from lexical, speech and body language…

信息检索 · 计算机科学 2018-06-11 Rahul Gupta , Saurabh Sahu , Carol Espy-Wilson , Shrikanth Narayanan

Sentiment analysis is a crucial task in natural language processing (NLP) with applications in public opinion monitoring, market research, and beyond. This paper introduces a three-class sentiment classification method for Weibo comments…

计算与语言 · 计算机科学 2024-12-24 Yin Qixuan

Time is an important relevance signal when searching streams of social media posts. The distribution of document timestamps from the results of an initial query can be leveraged to infer the distribution of relevant documents, which can…

信息检索 · 计算机科学 2017-07-26 Jinfeng Rao , Hua He , Haotian Zhang , Ferhan Ture , Royal Sequiera , Salman Mohammed , Jimmy Lin

Amid a tidal wave of misinformation flooding social media during elections and crises, extensive research has been conducted on misinformation detection, primarily focusing on text-based or image-based approaches. However, only a few…

机器学习 · 计算机科学 2025-07-04 Gautam Kishore Shahi

Multimodal sentiment analysis remains a challenging task due to the inherent heterogeneity across modalities. Such heterogeneity often manifests as asynchronous signals, imbalanced information between modalities, and interference from…

多媒体 · 计算机科学 2025-11-26 Yadong Liu , Shangfei Wang

Fueled by recent advances of self-supervised models, pre-trained speech representations proved effective for the downstream speech emotion recognition (SER) task. Most prior works mainly focus on exploiting pre-trained representations and…

声音 · 计算机科学 2023-03-02 Siyuan Shen , Feng Liu , Aimin Zhou

With the continuous emergence of various social media platforms frequently used in daily life, the multimodal meme understanding (MMU) task has been garnering increasing attention. MMU aims to explore and comprehend the meanings of memes…

计算与语言 · 计算机科学 2025-03-18 Li Zheng , Hao Fei , Ting Dai , Zuquan Peng , Fei Li , Huisheng Ma , Chong Teng , Donghong Ji

NLP tasks are often limited by scarcity of manually annotated data. In social media sentiment analysis and related tasks, researchers have therefore used binarized emoticons and specific hashtags as forms of distant supervision. Our paper…

机器学习 · 统计学 2019-11-19 Bjarke Felbo , Alan Mislove , Anders Søgaard , Iyad Rahwan , Sune Lehmann

Nowadays, Information spreads at an unprecedented pace in social media and discerning truth from misinformation and fake news has become an acute societal challenge. Machine learning (ML) models have been employed to identify fake news but…

计算与语言 · 计算机科学 2024-05-08 Jasraj Singh , Fang Liu , Hong Xu , Bee Chin Ng , Wei Zhang

Sentiment analysis is a very important natural language processing activity in which one identifies the polarity of a text, whether it conveys positive, negative, or neutral sentiment. Along with the growth of social media and the Internet,…

计算与语言 · 计算机科学 2025-09-30 Meysam Shirdel Bilehsavar , Negin Mahmoudi , Mohammad Jalili Torkamani , Kiana Kiashemshaki

The spread of rumors through social media and online social networks can not only disrupt the daily lives of citizens but also result in loss of life and property. A rumor spreads when individuals, who are unable decide the authenticity of…

物理与社会 · 物理学 2014-04-29 Bhushan Kotnis , Joy Kuri

One of the most significant issues as attended a lot in recent years is that of recognizing the sentiments and emotions in social media texts. The analysis of sentiments and emotions is intended to recognize the conceptual information such…

机器学习 · 计算机科学 2025-03-27 Bahareh Golchin , Noushin Riahi

With the development of social media, rumors spread quickly, cause great harm to society and economy. Thereby, many effective rumor detection methods have been developed, among which the rumor propagation structure learning based methods…

社会与信息网络 · 计算机科学 2025-08-07 Chaoqun Cui , Caiyan Jia

Deep neural networks have shown good data modelling capabilities when dealing with challenging and large datasets from a wide range of application areas. Convolutional Neural Networks (CNNs) offer advantages in selecting good features and…

计算与语言 · 计算机科学 2018-11-02 Abdulaziz M. Alayba , Vasile Palade , Matthew England , Rahat Iqbal

Sentiment analysis is the Natural Language Processing (NLP) task dealing with the detection and classification of sentiments in texts. While some tasks deal with identifying the presence of sentiment in the text (Subjectivity analysis),…

计算与语言 · 计算机科学 2017-07-06 Souvick Ghosh , Satanu Ghosh , Dipankar Das