Search Results for author: Kai-Cheng Yang

Found 13 papers, 7 papers with code

Characteristics and prevalence of fake social media profiles with AI-generated faces

1 code implementation5 Jan 2024 Kai-Cheng Yang, Danishjeet Singh, Filippo Menczer

Applying this method to a random sample of active Twitter users, we estimate a lower bound for the prevalence of profiles using GAN-generated faces between 0. 021% and 0. 044% -- around 10K daily active accounts.

Constructing Vec-tionaries to Extract Message Features from Texts: A Case Study of Moral Appeals

no code implementations10 Dec 2023 Zening Duan, Anqi Shao, Yicheng Hu, Heysung Lee, Xining Liao, Yoo Ji Suh, Jisoo Kim, Kai-Cheng Yang, Kaiping Chen, Sijia Yang

Using moral content in tweets as a case study, we illustrate the steps to construct the moral foundations vec-tionary, showcasing its ability to process texts missed by conventional dictionaries and word embedding methods and to produce measurements better aligned with crowdsourced human assessments.

Word Embeddings

Fact-checking information generated by a large language model can decrease news discernment

1 code implementation21 Aug 2023 Matthew R. DeVerna, Harry Yaojun Yan, Kai-Cheng Yang, Filippo Menczer

Although the LLM performs reasonably well in debunking false headlines, we find that it does not significantly affect participants' ability to discern headline accuracy or share accurate news.

Fact Checking Language Modelling +2

Anatomy of an AI-powered malicious social botnet

1 code implementation30 Jul 2023 Kai-Cheng Yang, Filippo Menczer

Large language models (LLMs) exhibit impressive capabilities in generating realistic text across diverse subjects.

Anatomy

Large language models can rate news outlet credibility

1 code implementation1 Apr 2023 Kai-Cheng Yang, Filippo Menczer

Although large language models (LLMs) have shown exceptional performance in various natural language processing tasks, they are prone to hallucinations.

Fact Checking

Demystifying Misconceptions in Social Bots Research

no code implementations30 Mar 2023 Stefano Cresci, Kai-Cheng Yang, Angelo Spognardi, Roberto Di Pietro, Filippo Menczer, Marinella Petrocchi

Research on social bots aims at advancing knowledge and providing solutions to one of the most debated forms of online manipulation.

Misconceptions Misinformation

CoVaxxy: A Collection of English-language Twitter Posts About COVID-19 Vaccines

no code implementations19 Jan 2021 Matthew DeVerna, Francesco Pierri, Bao Truong, John Bollenbacher, David Axelrod, Niklas Loynes, Cristopher Torres-Lugo, Kai-Cheng Yang, Fil Menczer, John Bryden

In this paper, we present the CoVaxxy dataset, a growing collection of English-language Twitter posts about COVID-19 vaccines.

Social and Information Networks

Detection of Novel Social Bots by Ensembles of Specialized Classifiers

no code implementations11 Jun 2020 Mohsen Sayyadiharikandeh, Onur Varol, Kai-Cheng Yang, Alessandro Flammini, Filippo Menczer

The ensemble of specialized classifiers (ESC) can better generalize, leading to an average improvement of 56\% in F1 score for unseen accounts across datasets.

Misinformation

Persona2vec: A Flexible Multi-role Representations Learning Framework for Graphs

1 code implementation4 Jun 2020 Jisung Yoon, Kai-Cheng Yang, Woo-Sung Jung, Yong-Yeol Ahn

Graph embedding techniques, which learn low-dimensional representations of a graph, are achieving state-of-the-art performance in many graph mining tasks.

Graph Embedding Graph Mining +1

Neutral bots probe political bias on social media

1 code implementation17 May 2020 Wen Chen, Diogo Pacheco, Kai-Cheng Yang, Filippo Menczer

Conservative accounts also find themselves in denser communities and are exposed to more low-credibility content.

Social and Information Networks Computers and Society

Scalable and Generalizable Social Bot Detection through Data Selection

no code implementations20 Nov 2019 Kai-Cheng Yang, Onur Varol, Pik-Mai Hui, Filippo Menczer

To ensure model accuracy, we build a rich collection of labeled datasets for training and validation.

Arming the public with artificial intelligence to counter social bots

no code implementations3 Jan 2019 Kai-Cheng Yang, Onur Varol, Clayton A. Davis, Emilio Ferrara, Alessandro Flammini, Filippo Menczer

Researchers have responded by developing AI tools to arm the public in the fight against social bots.

Computers and Society

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