Search Results for author: Filippo Menczer

Found 23 papers, 13 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.

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

Right and left, partisanship predicts (asymmetric) vulnerability to misinformation

no code implementations4 Oct 2020 Dimitar Nikolov, Alessandro Flammini, Filippo Menczer

We analyze the relationship between partisanship, echo chambers, and vulnerability to online misinformation by studying news sharing behavior on Twitter.

Misinformation Social and Information Networks Computers and Society

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

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

Finding Streams in Knowledge Graphs to Support Fact Checking

1 code implementation24 Aug 2017 Prashant Shiralkar, Alessandro Flammini, Filippo Menczer, Giovanni Luca Ciampaglia

The volume and velocity of information that gets generated online limits current journalistic practices to fact-check claims at the same rate.

Fact Checking Knowledge Graphs +1

The spread of low-credibility content by social bots

2 code implementations24 Jul 2017 Chengcheng Shao, Giovanni Luca Ciampaglia, Onur Varol, Kaicheng Yang, Alessandro Flammini, Filippo Menczer

Communication, cognitive, social, and computer scientists are engaged in efforts to study the complex causes for the viral diffusion of misinformation online and to develop solutions, while search and social media platforms are beginning to deploy countermeasures.

Social and Information Networks Computers and Society Physics and Society

Online Human-Bot Interactions: Detection, Estimation, and Characterization

4 code implementations9 Mar 2017 Onur Varol, Emilio Ferrara, Clayton A. Davis, Filippo Menczer, Alessandro Flammini

Increasing evidence suggests that a growing amount of social media content is generated by autonomous entities known as social bots.

Social and Information Networks

BotOrNot: A System to Evaluate Social Bots

2 code implementations2 Feb 2016 Clayton A. Davis, Onur Varol, Emilio Ferrara, Alessandro Flammini, Filippo Menczer

While most online social media accounts are controlled by humans, these platforms also host automated agents called social bots or sybil accounts.

Social and Information Networks

The DARPA Twitter Bot Challenge

no code implementations20 Jan 2016 V. S. Subrahmanian, Amos Azaria, Skylar Durst, Vadim Kagan, Aram Galstyan, Kristina Lerman, Linhong Zhu, Emilio Ferrara, Alessandro Flammini, Filippo Menczer, Andrew Stevens, Alexander Dekhtyar, Shuyang Gao, Tad Hogg, Farshad Kooti, Yan Liu, Onur Varol, Prashant Shiralkar, Vinod Vydiswaran, Qiaozhu Mei, Tim Hwang

A number of organizations ranging from terrorist groups such as ISIS to politicians and nation states reportedly conduct explicit campaigns to influence opinion on social media, posing a risk to democratic processes.

Women Through the Glass Ceiling: Gender Asymmetries in Wikipedia

1 code implementation19 Jan 2016 Claudia Wagner, Eduardo Graells-Garrido, David Garcia, Filippo Menczer

Contributing to the writing of history has never been as easy as it is today thanks to Wikipedia, a community-created encyclopedia that aims to document the world's knowledge from a neutral point of view.

Social and Information Networks

Clustering memes in social media streams

no code implementations3 Nov 2014 Mohsen JafariAsbagh, Emilio Ferrara, Onur Varol, Filippo Menczer, Alessandro Flammini

The problem of clustering content in social media has pervasive applications, including the identification of discussion topics, event detection, and content recommendation.

Clustering Event Detection

The Rise of Social Bots

1 code implementation19 Jul 2014 Emilio Ferrara, Onur Varol, Clayton Davis, Filippo Menczer, Alessandro Flammini

The Turing test aimed to recognize the behavior of a human from that of a computer algorithm.

Social and Information Networks Computers and Society Data Analysis, Statistics and Probability Physics and Society

Scale-free network growth by ranking

1 code implementation3 Feb 2006 Santo Fortunato, Alessandro Flammini, Filippo Menczer

Network growth is currently explained through mechanisms that rely on node prestige measures, such as degree or fitness.

Disordered Systems and Neural Networks Statistical Mechanics Physics and Society

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