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The recently advanced unsupervised learning approaches use the siamese-like framework to compare two "views" from the same image for learning representations. Making the two views distinctive is a core to guarantee that unsupervised methods…

计算机视觉与模式识别 · 计算机科学 2022-02-18 Zhiqiang Shen , Zechun Liu , Zhuang Liu , Marios Savvides , Trevor Darrell , Eric Xing

Social media has become an integral part of modern life, but it has also brought with it the pervasive issue of cyberbullying a serious menace in today's digital age. Cyberbullying, a form of harassment that occurs on social networks, has…

计算与语言 · 计算机科学 2024-11-12 Arvapalli Sai Susmitha , Pradeep Pujari

The increased use of online social networks for the dissemination of information comes with the misuse of the internet for cyberbullying, cybercrime, spam, vandalism, amongst other things. To proactively identify abuse in the networks, we…

社会与信息网络 · 计算机科学 2020-06-23 Abiola Osho , Ethan Tucker , George Amariucai

Cyberbullying and cyberaggression are increasingly worrisome phenomena affecting people across all demographics. More than half of young social media users worldwide have been exposed to such prolonged and/or coordinated digital harassment.…

Finite mixture models have been used for unsupervised learning for some time, and their use within the semi-supervised paradigm is becoming more commonplace. Clickstream data is one of the various emerging data types that demands particular…

统计方法学 · 统计学 2020-12-17 Michael P. B. Gallaugher , Paul D. McNicholas

Social media communications are becoming increasingly prevalent; some useful, some false, whether unwittingly or maliciously. An increasing number of rumours daily flood the social networks. Determining their veracity in an autonomous way…

社会与信息网络 · 计算机科学 2019-02-11 Georgios Giasemidis , Nikolaos Kaplis , Ioannis Agrafiotis , Jason R. C. Nurse

This paper presents and evaluates work on the development of an artificial intelligence (AI) anti-bullying system. The system is designed to identify coordinated bullying attacks via social media and other mechanisms, characterize them and…

The rampant spread of cyberbullying content poses a growing threat to societal well-being. However, research on cyberbullying detection in Chinese remains underdeveloped, primarily due to the lack of comprehensive and reliable datasets.…

计算与语言 · 计算机科学 2025-01-28 Qingpo Yang , Yakai Chen , Zihui Xu , Yu-ming Shang , Sanchuan Guo , Xi Zhang

The prevalence of different kinds of electronic devices and the volume of content on the Web have increased the amount of plagiarism, which is considered an unethical act. If we want to be efficient in the detection and prevention of these…

社会与信息网络 · 计算机科学 2018-07-11 Aljaž Zrnec , Dejan Lavbič

The accelerated development of social media websites has posed intricate security issues in cyberspace, where these sites have increasingly become victims of criminal activities including attempts to intrude into them, abnormal traffic…

机器学习 · 计算机科学 2026-01-07 Aditi Sanjay Agrawal

In the era of information technology, the two developing sides are data science and artificial intelligence. In terms of scientific data, one of the tasks is the extraction of social networks from information sources that have the nature of…

社会与信息网络 · 计算机科学 2022-03-02 Mahyuddin K. M. Nasution , Rahmad Syah

Dataset bias is a critical challenge in machine learning since it often leads to a negative impact on a model due to the unintended decision rules captured by spurious correlations. Although existing works often handle this issue based on…

机器学习 · 计算机科学 2022-04-05 Seonguk Seo , Joon-Young Lee , Bohyung Han

Online harassment has been a problem to a greater or lesser extent since the early days of the internet. Previous work has applied anti-spam techniques like machine-learning based text classification (Reynolds, 2011) to detecting harassing…

计算与语言 · 计算机科学 2016-09-12 Alexei Bastidas , Edward Dixon , Chris Loo , John Ryan

Mislabeled, duplicated, or biased data in real-world scenarios can lead to prolonged training and even hinder model convergence. Traditional solutions prioritizing easy or hard samples lack the flexibility to handle such a variety…

机器学习 · 计算机科学 2023-11-08 Zhijie Deng , Peng Cui , Jun Zhu

Harmful content detection models tend to have higher false positive rates for content from marginalized groups. In the context of marginal abuse modeling on Twitter, such disproportionate penalization poses the risk of reduced visibility,…

计算与语言 · 计算机科学 2022-10-13 Kyra Yee , Alice Schoenauer Sebag , Olivia Redfield , Emily Sheng , Matthias Eck , Luca Belli

Existing research on detecting cyberbullying incidents on social media has primarily concentrated on harassment and is typically approached as a binary classification task. However, cyberbullying encompasses various forms, such as…

计算与语言 · 计算机科学 2025-01-29 Peiling Yi , Arkaitz Zubiaga , Yunfei Long

Recent Intrusion Detection System (IDS) research has increasingly moved towards the adoption of machine learning methods. However, most of these systems rely on supervised learning approaches, necessitating a fully labeled training set. In…

密码学与安全 · 计算机科学 2025-03-31 Maxime Gourceyraud , Rim Ben Salem , Christopher Neal , Frédéric Cuppens , Nora Boulahia Cuppens

Gaussian Mixture Models are one of the most studied and mature models in unsupervised learning. However, outliers are often present in the data and could influence the cluster estimation. In this paper, we study a new model that assumes…

机器学习 · 统计学 2020-03-24 Sida Liu , Adrian Barbu

Generative Adversarial Networks (GANs) have been shown to produce realistically looking synthetic images with remarkable success, yet their performance seems less impressive when the training set is highly diverse. In order to provide a…

机器学习 · 计算机科学 2018-08-31 Matan Ben-Yosef , Daphna Weinshall

The premise of semi-supervised learning (SSL) is that combining labeled and unlabeled data yields significantly more accurate models. Despite empirical successes, the theoretical understanding of SSL is still far from complete. In this…

机器学习 · 统计学 2024-09-06 Eyar Azar , Boaz Nadler