Search Results for author: Maurizio Tesconi

Found 16 papers, 2 papers with code

The Anatomy of Conspirators: Unveiling Traits using a Comprehensive Twitter Dataset

no code implementations29 Aug 2023 Margherita Gambini, Serena Tardelli, Maurizio Tesconi

Our approach centers on data collection that is independent of specific conspiracy theories and information operations.

Anatomy Misinformation

The Emotions of the Crowd: Learning Image Sentiment from Tweets via Cross-modal Distillation

no code implementations28 Apr 2023 Alessio Serra, Fabio Carrara, Maurizio Tesconi, Fabrizio Falchi

Trends and opinion mining in social media increasingly focus on novel interactions involving visual media, like images and short videos, in addition to text.

Opinion Mining Sentiment Analysis

Modularity-based approach for tracking communities in dynamic social networks

no code implementations24 Feb 2023 Michele Mazza, Guglielmo Cola, Maurizio Tesconi

Despite a growing interest in tracking the evolution of groups of users in real-world social networks, the predominant focus of community detection efforts has been on communities within static networks.

Community Detection

Temporal Dynamics of Coordinated Online Behavior: Stability, Archetypes, and Influence

no code implementations17 Jan 2023 Serena Tardelli, Leonardo Nizzoli, Maurizio Tesconi, Mauro Conti, Preslav Nakov, Giovanni Da San Martino, Stefano Cresci

Large-scale online campaigns, malicious or otherwise, require a significant degree of coordination among participants, which sparked interest in the study of coordinated online behavior.

Community Detection Dynamic Community Detection

MulBot: Unsupervised Bot Detection Based on Multivariate Time Series

no code implementations21 Sep 2022 Lorenzo Mannocci, Stefano Cresci, Anna Monreale, Athina Vakali, Maurizio Tesconi

Not only does MulBot achieve excellent results in the binary classification task, but we also demonstrate its strengths in a novel and practically-relevant task: detecting and separating different botnets.

Binary Classification Multi-class Classification +2

Tweets2Stance: Users stance detection exploiting Zero-Shot Learning Algorithms on Tweets

no code implementations22 Apr 2022 Margherita Gambini, Tiziano Fagni, Caterina Senette, Maurizio Tesconi

Existing approaches, mainly targeting Twitter users, rely on content-based analysis or are based on a mixture of content, network and communication analysis.

Stance Detection Zero-Shot Learning

Towards better social crisis data with HERMES: Hybrid sensing for EmeRgency ManagEment System

no code implementations4 Dec 2019 Marco Avvenuti, Salvatore Bellomo, Stefano Cresci, Leonardo Nizzoli, Maurizio Tesconi

People involved in mass emergencies increasingly publish information-rich contents in online social networks (OSNs), thus acting as a distributed and resilient network of human sensors.

Management

The Limited Reach of Fake News on Twitter during 2019 European Elections

1 code implementation27 Nov 2019 Matteo Cinelli, Stefano Cresci, Alessandro Galeazzi, Walter Quattrociocchi, Maurizio Tesconi

The advent of social media changed the way we consume content favoring a disintermediated access and production.

Social and Information Networks Computers and Society Physics and Society

RTbust: Exploiting Temporal Patterns for Botnet Detection on Twitter

no code implementations12 Feb 2019 Michele Mazza, Stefano Cresci, Marco Avvenuti, Walter Quattrociocchi, Maurizio Tesconi

We design a novel visualization that we leverage to highlight benign and malicious patterns of retweeting activity.

Clustering Time Series +1

Who framed Roger Reindeer? De-censorship of Facebook posts by snippet classification

no code implementations10 Apr 2018 Fabio Del Vigna, Marinella Petrocchi, Alessandro Tommasi, Cesare Zavattari, Maurizio Tesconi

However, being the collaborative web characterised by a redundancy of information, it is not unusual that the same fact is reported by multiple sources, which may not apply the same restriction policies in terms of censorship.

General Classification

Social Fingerprinting: detection of spambot groups through DNA-inspired behavioral modeling

no code implementations13 Mar 2017 Stefano Cresci, Roberto Di Pietro, Marinella Petrocchi, Angelo Spognardi, Maurizio Tesconi

We build upon digital DNA and the similarity between groups of users to characterize both genuine accounts and spambots.

DNA analysis

Semi-supervised knowledge extraction for detection of drugs and their effects

no code implementations21 Sep 2016 Fabio Del Vigna, Marinella Petrocchi, Alessandro Tommasi, Cesare Zavattari, Maurizio Tesconi

Based on the very small set of initial seeds, the work highlights how a contrastive approach and context deduction are effective in detecting substances and effects from the corpora.

DNA-inspired online behavioral modeling and its application to spambot detection

no code implementations30 Jan 2016 Stefano Cresci, Roberto Di Pietro, Marinella Petrocchi, Angelo Spognardi, Maurizio Tesconi

We propose a strikingly novel, simple, and effective approach to model online user behavior: we extract and analyze digital DNA sequences from user online actions and we use Twitter as a benchmark to test our proposal.

DNA analysis

Fame for sale: efficient detection of fake Twitter followers

no code implementations14 Sep 2015 Stefano Cresci, Roberto Di Pietro, Marinella Petrocchi, Angelo Spognardi, Maurizio Tesconi

$\textit{Fake followers}$ are those Twitter accounts specifically created to inflate the number of followers of a target account.

Spam detection

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