Search Results for author: Sotiris Ioannidis

Found 8 papers, 4 papers with code

Russo-Ukrainian War: Prediction and explanation of Twitter suspension

no code implementations6 Jun 2023 Alexander Shevtsov, Despoina Antonakaki, Ioannis Lamprou, Ioannis Kontogiorgakis, Polyvios Pratikakis, Sotiris Ioannidis

This study focuses on the Twitter suspension mechanism and the analysis of shared content and features of the user accounts that may lead to this.

BotArtist: Twitter bot detection Machine Learning model based on Twitter suspension

no code implementations31 May 2023 Alexander Shevtsov, Despoina Antonakaki, Ioannis Lamprou, Polyvios Pratikakis, Sotiris Ioannidis

We collect the ground truth for our dataset through the Twitter API suspended accounts collection, containing approximately 343K of bot accounts and 8M of normal users.

Twitter Bot Detection

Evaluating Short-Term Forecasting of Multiple Time Series in IoT Environments

1 code implementation15 Jun 2022 Christos Tzagkarakis, Pavlos Charalampidis, Stylianos Roubakis, Alexandros Fragkiadakis, Sotiris Ioannidis

Modern Internet of Things (IoT) environments are monitored via a large number of IoT enabled sensing devices, with the data acquisition and processing infrastructure setting restrictions in terms of computational power and energy resources.

Decision Making Time Series +1

End-to-end Wireless Path Deployment with Intelligent Surfaces Using Interpretable Neural Networks

no code implementations16 Oct 2020 Christos Liaskos, Shuai Niez, Ageliki Tsioliaridou, Andreas Pitsillides, Sotiris Ioannidis, Ian F. Akyildiz

A feedforward/backpropagate process optimizes these weights to match ideal propagation outcomes (normalized network power outputs) to wireless user emissions (normalized network power inputs).

An Interpretable Neural Network for Configuring Programmable Wireless Environments

no code implementations7 May 2019 Christos Liaskos, Ageliki Tsioliaridou, Shuai Nie, Andreas Pitsillides, Sotiris Ioannidis, Ian Akyildiz

A network of SDMs deployed over objects within an area, such as a floorplan walls, creates programmable wireless environments (PWEs) with fully customizable propagation of waves within them.

Please Forget Where I Was Last Summer: The Privacy Risks of Public Location (Meta)Data

1 code implementation3 Jan 2019 Kostas Drakonakis, Panagiotis Ilia, Sotiris Ioannidis, Jason Polakis

We further explore the mismatch between user actions and information exposure and find that older versions of the official Twitter apps follow a privacy-invasive policy of including precise GPS coordinates in the metadata of tweets that users have geotagged at a coarse-grained level (e. g., city).

Computers and Society Cryptography and Security

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