Paraskevi Fragopoulou

According to our database, Paraskevi Fragopoulou authored at least 75 papers between 1993 and 2022.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2022

Discovery and Classification of Twitter Bots.

Alexander Shevtsov, Maria Oikonomidou, Despoina Antonakaki, Polyvios Pratikakis, Alexandros Kanterakis, Paraskevi Fragopoulou, Sotiris Ioannidis

SN Comput. Sci., 2022

Collaborative filtering recommender systems taxonomy.

Harris Papadakis, Antonis Papagrigoriou, Costas Panagiotakis, Eleftherios Kosmas, Paraskevi Fragopoulou

Knowl. Inf. Syst., 2022

The Tourist Trip Design Problem with POI Categories via an Expectation-Maximization Based Method.

Costas Panagiotakis, Evangelia Daskalaki, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the Workshop on Recommenders in Tourism (RecTour 2022) co-located with the 16th ACM Conference on Recommender Systems (RecSys 2022), 2022

Personalized Itinerary Recommendation via Expectation-Maximization.

Costas Panagiotakis, Evangelia Daskalaki, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the 17th IEEE International Conference on Computer Sciences and Information Technologies, 2022

2021

DTEC: Dual Training Error based Correction approach for recommender systems.

Costas Panagiotakis, Harris Papadakis, Antonis Papagrigoriou, Paraskevi Fragopoulou

Softw. Impacts, 2021

Improving recommender systems via a Dual Training Error based Correction approach.

Costas Panagiotakis, Harris Papadakis, Antonis Papagrigoriou, Paraskevi Fragopoulou

Expert Syst. Appl., 2021

A survey of Twitter research: Data model, graph structure, sentiment analysis and attacks.

Despoina Antonakaki, Paraskevi Fragopoulou, Sotiris Ioannidis

Expert Syst. Appl., 2021

A dual hybrid recommender system based on SCoR and the random forest.

Costas Panagiotakis, Harris Papadakis, Paraskevi Fragopoulou

Comput. Sci. Inf. Syst., 2021

2020

Unsupervised and supervised methods for the detection of hurriedly created profiles in recommender systems.

Costas Panagiotakis, Harris Papadakis, Paraskevi Fragopoulou

Int. J. Mach. Learn. Cybern., 2020

Understanding the online behavior and risks of children: results of a large-scale national survey on 10-18 year olds.

Evangelia Daskalaki, Katerina Psaroudaki, Marieva Karkanaki, Paraskevi Fragopoulou

CoRR, 2020

Investigating the dynamics of illegal online activity: The power of reporting, dark web, and related legislation.

Emmanouela Kokolaki, Evangelia Daskalaki, Katerina Psaroudaki, Meltini Christodoulaki, Paraskevi Fragopoulou

Comput. Law Secur. Rev., 2020

A User Training Error based Correction Approach combined with the Synthetic Coordinate Recommender System.

Costas Panagiotakis, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the Adjunct Publication of the 28th ACM Conference on User Modeling, 2020

Personalized Video Summarization Based Exclusively on User Preferences.

Costas Panagiotakis, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the Advances in Information Retrieval, 2020

2019

Context-Driven Tour Planning Service: An Approach Based on Synthetic Coordinates Recommendation.

Alexey M. Kashevnik, Sergei Mikhailov, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the 24th Conference of Open Innovations Association, 2019

2018

Utilizing the average node degree to assess the temporal growth rate of Twitter.

Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou

Soc. Netw. Anal. Min., 2018

EL-SIC: Focus on Better and Safer Online Experiences for Kids.

Evangelia Daskalaki, Katerina Psaroudaki, Paraskevi Fragopoulou

ERCIM News, 2018

A Mobile Application for Personalized Movie Recommendations with Dynamic Updates.

Harris Papadakis, Paraskevi Fragopoulou, Nikos Michalakis, Costas Panagiotakis

Proceedings of the 9th IEEE International Conference on Intelligent Systems, 2018

Detection of Hurriedly Created Abnormal Profiles in Recommender Systems.

Costas Panagiotakis, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the 9th IEEE International Conference on Intelligent Systems, 2018

2017

SCoR: A Synthetic Coordinate based Recommender system.

Harris Papadakis, Costas Panagiotakis, Paraskevi Fragopoulou

Expert Syst. Appl., 2017

Movie SCoRe: Personalized Movie Recommendation on Mobile Devices.

Harris Papadakis, Nikos Michalakis, Paraskevi Fragopoulou, Costas Panagiotakis, Athanasios G. Malamos

Proceedings of the 21st Pan-Hellenic Conference on Informatics, 2017

SAMPAC: Socially-Aware collaborative Multi-Party Access Control.

Panagiotis Ilia, Barbara Carminati, Elena Ferrari, Paraskevi Fragopoulou, Sotiris Ioannidis

Proceedings of the Seventh ACM Conference on Data and Application Security and Privacy, 2017

2016

Exploiting abused trending topics to identify spam campaigns in Twitter.

Despoina Antonakaki, Iasonas Polakis, Elias Athanasopoulos, Sotiris Ioannidis, Paraskevi Fragopoulou

Soc. Netw. Anal. Min., 2016

Motivation Effect of Social Media Posts about Well-being and Healthy Living.

Dimitris Spiliotopoulos, Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou

Proceedings of the 9th ACM International Conference on PErvasive Technologies Related to Assistive Environments, 2016

Usability Evaluation of Accessible Complex Graphs.

Dimitris Spiliotopoulos, Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou

Proceedings of the Computers Helping People with Special Needs, 2016

Investigating the complete corpus of referendum and elections tweets.

Despoina Antonakaki, Dimitris Spiliotopoulos, Christos V. Samaras, Sotiris Ioannidis, Paraskevi Fragopoulou

Proceedings of the 2016 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, 2016

2015

Evolving Twitter: an experimental analysis of graph properties of the social graph.

Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou

CoRR, 2015

Social Forensics: Searching for Needles in Digital Haystacks.

Iasonas Polakis, Panagiotis Ilia, Zacharias Tzermias, Sotiris Ioannidis, Paraskevi Fragopoulou

Proceedings of the 4th International Workshop on Building Analysis Datasets and Gathering Experience Returns for Security, 2015

Local Community Detection via Flow Propagation.

Costas Panagiotakis, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the 2015 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, 2015

2014

Think Before RT: An Experimental Study of Abusing Twitter Trends.

Despoina Antonakaki, Iasonas Polakis, Elias Athanasopoulos, Sotiris Ioannidis, Paraskevi Fragopoulou

Proceedings of the Social Informatics - SocInfo 2014 International Workshops, Barcelona, 2014

CoViFlowPro: A Community Visualization method based on a Flow Propagation Algorithm.

Paraskevi Fragopoulou, Costas Panagiotakis, Harris Papadakis

Proceedings of the 8th International Conference on Bio-inspired Information and Communications Technologies, 2014

2013

ITA: Innocuous Topology Awareness for Unstructured P2P Networks.

Harris Papadakis, Paraskevi Fragopoulou, Evangelos P. Markatos, Mema Roussopoulos

IEEE Trans. Parallel Distributed Syst., 2013

Locating communities on graphs with variations in community sizes.

Harris Papadakis, Costas Panagiotakis, Paraskevi Fragopoulou

J. Supercomput., 2013

Interactive image segmentation based on synthetic graph coordinates.

Costas Panagiotakis, Harris Papadakis, Ilias Grinias, Nikos Komodakis, Paraskevi Fragopoulou, Georgios Tziritas

Pattern Recognit., 2013

Interactive Image Segmentation via Graph Clustering and Synthetic Coordinates Modeling.

Costas Panagiotakis, Harris Papadakis, Elias Grinias, Nikos Komodakis, Paraskevi Fragopoulou, Georgios Tziritas

Proceedings of the Computer Analysis of Images and Patterns, 2013

Voting Clustering and Key Points Selection.

Costas Panagiotakis, Paraskevi Fragopoulou

Proceedings of the Computer Analysis of Images and Patterns, 2013

A distributed algorithm for community detection in large graphs.

Harris Papadakis, Costas Panagiotakis, Paraskevi Fragopoulou

Proceedings of the Advances in Social Networks Analysis and Mining 2013, 2013

2012

Locating Communities on Real Dataset Graphs Using Synthetic Coordinates.

Harris Papadakis, Costas Panagiotakis, Paraskevi Fragopoulou

Parallel Process. Lett., 2012

Guest Editors Note Special Issue on Community Structures in Networks: Methods and Applications.

Paraskevi Fragopoulou, Artur Andrzejak, Carlo Mastroianni, Costas Panagiotakis

Parallel Process. Lett., 2012

Topic 6: Grid, Cluster and Cloud Computing.

Erik Elmroth, Paraskevi Fragopoulou, Artur Andrzejak, Ivona Brandic, Karim Djemame, Paolo Romano

Proceedings of the Euro-Par 2012 Parallel Processing - 18th International Conference, 2012

Evolution of User Activity and Community Formation in an Online Social Network.

Andreas Kalaitzakis, Harris Papadakis, Paraskevi Fragopoulou

Proceedings of the International Conference on Advances in Social Networks Analysis and Mining, 2012

2011

Community detection in collaborative environments: a comparative analysis.

Andreas Kalaitzakis, Harris Papadakis, Costas Panagiotakis, Paraskevi Fragopoulou

Proceedings of the PETRA 2011, 2011

Distributed community detection: Finding neighborhoods in a complex world using synthetic coordinates.

Harris Papadakis, Paraskevi Fragopoulou, Costas Panagiotakis

Proceedings of the 16th IEEE Symposium on Computers and Communications, 2011

2010

SafeLine: reporting illegal internet content.

Meltini Christodoulaki, Paraskevi Fragopoulou

Inf. Manag. Comput. Secur., 2010

2010 CoreGRID/ERCIM Workshop on Grids, Clouds and P2P Computing.

Marco Danelutto, Frédéric Desprez, Paraskevi Fragopoulou, Alan Stewart

Proceedings of the Euro-Par 2010 Parallel Processing Workshops, 2010

2009

Hash-Based Overlay Partitioning in Unstructured Peer-to-Peer Systems.

Harris Papadakis, Paraskevi Fragopoulou, Evangelos P. Markatos, Marios D. Dikaiakos, Alexandros Labrinidis

Parallel Process. Lett., 2009

Imbuing Unstructured P2P Systems with Non-Intrusive Topology Awareness.

Harris Papadakis, Mema Roussopoulos, Paraskevi Fragopoulou, Evangelos P. Markatos

Proceedings of the Proceedings P2P 2009, 2009

An Experimental Evaluation of the DQ-DHT Algorithm in a Grid Information Service.

Harris Papadakis, Paolo Trunfio, Domenico Talia, Paraskevi Fragopoulou

Proceedings of the Grids, 2009

Self-* and Adaptive Mechanisms for Large Scale Distributed Systems.

Paraskevi Fragopoulou, Carlo Mastroianni, Rubén Santiago Montero, Artur Andrjezak, Derrick Kondo

Proceedings of the Grids, 2009

2008

Cooperative Self-Composition and Discovery of Grid Services in P2P Networks.

Eugenio Zimeo, Alberto Troisi, Harris Papadakis, Paraskevi Fragopoulou, Agostino Forestiero, Carlo Mastroianni

Parallel Process. Lett., 2008

Topic 6: Grid and Cluster Computing.

Marco Danelutto, Juan Touriño, Mark Baker, Rajkumar Buyya, Paraskevi Fragopoulou, Christian Pérez, Erich Schikuta

Proceedings of the Euro-Par 2008, 2008

A Scalable Architecture For Discovery And Planning In P2P Service Networks.

Agostino Forestiero, Carlo Mastroianni, Harris Papadakis, Paraskevi Fragopoulou, Alberto Troisi, Eugenio Zimeo

Proceedings of the Grid Computing, 2008

2007

Failure Management in Grids: the Case of the EGEE Infrastructure.

Kyriakos Neocleous, Marios D. Dikaiakos, Paraskevi Fragopoulou, Evangelos P. Markatos

Parallel Process. Lett., 2007

Peer-to-Peer resource discovery in Grids: Models and systems.

Paolo Trunfio, Domenico Talia, Harris Papadakis, Paraskevi Fragopoulou, Matteo Mordacchini, M. Pennanen, Konstantin Popov, Vladimir Vlassov, Seif Haridi

Future Gener. Comput. Syst., 2007

Design and Implementation of a Hybrid P2P-based Grid Resource Discovery System.

Harris Papadakis, Paolo Trunfio, Domenico Talia, Paraskevi Fragopoulou

Proceedings of the Making Grids Work: Proceedings of the CoreGRID Workshop on Programming Models Grid and P2P System Architecture Grid Systems, 2007

2006

Approximation algorithms for the k-source multicast tree construction problem.

Paraskevi Fragopoulou

Networks, 2006

Divide et Impera: Partitioning Unstructured Peer-to-Peer Systems to Improve Resource Location.

Harris Papadakis, Paraskevi Fragopoulou, Evangelos P. Markatos, Marios D. Dikaiakos, Alexandros Labrinidis

Proceedings of the Achievements in European Research on Grid Systems: CoreGRID Integration Workshop 2006, 2006

2005

The Complexity of the Maximal Requests Satisfaction Problem in Multipoint Communication.

Dominique Barth, Pascal Berthomé, Paraskevi Fragopoulou

Parallel Process. Lett., 2005

Multi-source Trees: Algorithms for Minimizing Eccentricity Cost Metrics.

Paraskevi Fragopoulou, Stavros D. Nikolopoulos, Leonidas Palios

Proceedings of the Algorithms and Computation, 16th International Symposium, 2005

2002

Compact Multicast Algorithms on Grids and Tori Without Intermediate Buffering.

Dominique Barth, Paraskevi Fragopoulou

Parallel Process. Lett., 2002

Uniform emulations of Cartesian-product and Cayley graphs.

Dominique Barth, Paraskevi Fragopoulou, Marie-Claude Heydemann

Discret. Appl. Math., 2002

2001

Minimum Eccentricity Multicast Trees.

David W. Krumme, Paraskevi Fragopoulou

Discret. Math. Theor. Comput. Sci., 2001

2000

Multi-Source Spanning Tree Problems.

Arthur M. Farley, Paraskevi Fragopoulou, David W. Krumme, Andrzej Proskurowski, Dana Richards

J. Interconnect. Networks, 2000

1999

Compact Multicast Algorithms on Grids Without Intermediate Buffering.

Dominique Barth, Paraskevi Fragopoulou

Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 1999

1998

Spanning subgraphs with applications to communication on a subclass of the Cayley-graph-based networks.

Paraskevi Fragopoulou, Selim G. Akl

Discret. Appl. Math., 1998

1996

Edge-Disjoint Spanning Trees on the Star Network with Applications to Fault Tolerance.

Paraskevi Fragopoulou, Selim G. Akl

IEEE Trans. Computers, 1996

Spanning Subgraphs with Applications to Communication on the Multidimensional Torus Network.

Paraskevi Fragopoulou, Selim G. Akl

Parallel Comput., 1996

Optimal Communication Primitives on the Generalized Hypercube Network.

Paraskevi Fragopoulou, Selim G. Akl, Henk Meijer

J. Parallel Distributed Comput., 1996

Performance Evaluation and Modeling of Reduction Operations on the IBM RS/6000 SP Parallel Computer.

Paraskevi Fragopoulou, Ole H. Nielsen

Proceedings of the Applied Parallel Computing, 1996

1995

Optimal Communication algorithms on Star Graphs Using Spanning Tree Constructions.

Paraskevi Fragopoulou, Selim G. Akl

J. Parallel Distributed Comput., 1995

Efficient algorithms for global data communication on the multidimensional torus network.

Paraskevi Fragopoulou, Selim G. Akl

Proceedings of IPPS '95, 1995

Fault tolerant communication algorithms on the star network using disjoint paths.

Paraskevi Fragopoulou, Selim G. Akl

Proceedings of the 28th Annual Hawaii International Conference on System Sciences (HICSS-28), 1995

1994

A Parallel Algorithm for Computing Fourier Transforms on the Star Graph.

Paraskevi Fragopoulou, Selim G. Akl

IEEE Trans. Parallel Distributed Syst., 1994

1993

On the Comparative Powers of the 2D-Parbs and the CRCW-Pram Models.

Paraskevi Fragopoulou

Parallel Process. Lett., 1993

On the Efficient Summation of N Numbers on an N-Processor Reconfigurable Mesh.

Paraskevi Fragopoulou

Parallel Process. Lett., 1993

Optimal Communication Algorithms on the Star Interconnection Network.

Paraskevi Fragopoulou, Selim G. Akl

Proceedings of the Fifth IEEE Symposium on Parallel and Distributed Processing, 1993