Alexandros Ntoulas

According to our database, Alexandros Ntoulas authored at least 40 papers between 2000 and 2022.

Collaborative distances:

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

2022

Rapid Detection of Local Communities in Graph Streams.

Panagiotis Liakos, Katia Papakonstantinopoulou, Alexandros Ntoulas, Alex Delis

IEEE Trans. Knowl. Data Eng., 2022

Uncovering Local Hierarchical Overlapping Communities at Scale.

Panagiotis Liakos, Alexandros Ntoulas, Alex Delis

IEEE Trans. Big Data, 2022

Introduction to the special issue on data science in Asia (with PAKDD'2020).

Hady W. Lauw, Raymond Chi-Wing Wong, Alexandros Ntoulas

Int. J. Data Sci. Anal., 2022

2021

DeepReduce: A Sparse-tensor Communication Framework for Distributed Deep Learning.

Kelly Kostopoulou, Hang Xu, Aritra Dutta, Xin Li, Alexandros Ntoulas, Panos Kalnis

CoRR, 2021

DeepReduce: A Sparse-tensor Communication Framework for Federated Deep Learning.

Hang Xu, Kelly Kostopoulou, Aritra Dutta, Xin Li, Alexandros Ntoulas, Panos Kalnis

Proceedings of the Advances in Neural Information Processing Systems 34: Annual Conference on Neural Information Processing Systems 2021, 2021

2019

DiCeS: Detecting Communities in Network Streams over the Cloud.

Panagiotis Liakos, Katia Papakonstantinopoulou, Alexandros Ntoulas, Alex Delis

Proceedings of the 12th IEEE International Conference on Cloud Computing, 2019

2017

Rhea: Adaptively sampling authoritative content from social activity streams.

Panagiotis Liakos, Alexandros Ntoulas, Alex Delis

Proceedings of the 2017 IEEE International Conference on Big Data (IEEE BigData 2017), 2017

COEUS: Community detection via seed-set expansion on graph streams.

Panagiotis Liakos, Alexandros Ntoulas, Alex Delis

Proceedings of the 2017 IEEE International Conference on Big Data (IEEE BigData 2017), 2017

2016

Focused crawling for the hidden web.

Panagiotis Liakos, Alexandros Ntoulas, Alexandros Labrinidis, Alex Delis

World Wide Web, 2016

Scalable link community detection: A local dispersion-aware approach.

Panagiotis Liakos, Alexandros Ntoulas, Alex Delis

Proceedings of the 2016 IEEE International Conference on Big Data (IEEE BigData 2016), 2016

2014

Using temporal IDF for efficient novelty detection in text streams.

Margarita Karkali, François Rousseau, Alexandros Ntoulas, Michalis Vazirgiannis

CoRR, 2014

2013

A Data Management Approach for Dataset Selection Using Human Computation.

Alexandros Ntoulas, Omar Alonso, Vasilis Kandylas

CoRR, 2013

Soc Web: Efficient Monitoring of Social Network Activities.

Fotis Psallidas, Alexandros Ntoulas, Alex Delis

Proceedings of the Web Information Systems Engineering - WISE 2013, 2013

Efficient Online Novelty Detection in News Streams.

Margarita Karkali, François Rousseau, Alexandros Ntoulas, Michalis Vazirgiannis

Proceedings of the Web Information Systems Engineering - WISE 2013, 2013

2012

Organizing User Search Histories.

Heasoo Hwang, Hady Wirawan Lauw, Lise Getoor, Alexandros Ntoulas

IEEE Trans. Knowl. Data Eng., 2012

Topic-Sensitive Hidden-Web Crawling.

Panagiotis Liakos, Alexandros Ntoulas

Proceedings of the Web Information Systems Engineering - WISE 2012, 2012

PocketWeb: instant web browsing for mobile devices.

Dimitrios Lymberopoulos, Oriana Riva, Karin Strauss, Akshay Mittal, Alexandros Ntoulas

Proceedings of the 17th International Conference on Architectural Support for Programming Languages and Operating Systems, 2012

2011

Rank-Aware Crawling of Hidden Web sites.

George Valkanas, Alexandros Ntoulas, Dimitrios Gunopulos

Proceedings of the 14th International Workshop on the Web and Databases 2011, 2011

Indexing strategies for graceful degradation of search quality.

Shuai Ding, Sreenivas Gollapudi, Samuel Ieong, Krishnaram Kenthapadi, Alexandros Ntoulas

Proceedings of the Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2011

Selecting a comprehensive set of reviews.

Panayiotis Tsaparas, Alexandros Ntoulas, Evimaria Terzi

Proceedings of the 17th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 2011

Efficient query rewrite for structured web queries.

Sreenivas Gollapudi, Samuel Ieong, Alexandros Ntoulas, Stelios Paparizos

Proceedings of the 20th ACM Conference on Information and Knowledge Management, 2011

2010

Homophily in the Digital World: A LiveJournal Case Study.

Hady Wirawan Lauw, John C. Shafer, Rakesh Agrawal, Alexandros Ntoulas

IEEE Internet Comput., 2010

Exploiting social context for review quality prediction.

Yue Lu, Panayiotis Tsaparas, Alexandros Ntoulas, Livia Polanyi

Proceedings of the 19th International Conference on World Wide Web, 2010

2009

Search personalization through query and page topical analysis.

Sofia Stamou, Alexandros Ntoulas

User Model. User Adapt. Interact., 2009

Releasing search queries and clicks privately.

Aleksandra Korolova, Krishnaram Kenthapadi, Nina Mishra, Alexandros Ntoulas

Proceedings of the 18th International Conference on World Wide Web, 2009

Answering web queries using structured data sources.

Stelios Paparizos, Alexandros Ntoulas, John C. Shafer, Rakesh Agrawal

Proceedings of the ACM SIGMOD International Conference on Management of Data, 2009

2007

Modeling and managing changes in text databases.

Panagiotis G. Ipeirotis, Alexandros Ntoulas, Junghoo Cho, Luis Gravano

ACM Trans. Database Syst., 2007

The Infocious Web Search Engine: Improving Web Searching through Linguistic Analysis.

Alexandros Ntoulas, Gerald Chao, Junghoo Cho

J. Digit. Inf. Manag., 2007

Answering bounded continuous search queries in the world wide web.

Dirk Kukulenz, Alexandros Ntoulas

Proceedings of the 16th International Conference on World Wide Web, 2007

Pruning policies for two-tiered inverted index with correctness guarantee.

Alexandros Ntoulas, Junghoo Cho

Proceedings of the SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2007

2006

Detecting spam web pages through content analysis.

Alexandros Ntoulas, Marc Najork, Mark S. Manasse, Dennis Fetterly

Proceedings of the 15th international conference on World Wide Web, 2006

Classifying Web Data in Directory Structures.

Sofia Stamou, Alexandros Ntoulas, Vlassis Krikos, Pavlos Kokosis, Dimitris Christodoulakis

Proceedings of the Frontiers of WWW Research and Development, 2006

2005

DirectoryRank: ordering pages in web directories.

Vlassis Krikos, Sofia Stamou, Pavlos Kokosis, Alexandros Ntoulas, Dimitris Christodoulakis

Proceedings of the Seventh ACM International Workshop on Web Information and Data Management (WIDM 2005), 2005

Web Directory Construction Using Lexical Chains.

Sofia Stamou, Vlassis Krikos, Pavlos Kokosis, Alexandros Ntoulas, Dimitris Christodoulakis

Proceedings of the Natural Language Processing and Information Systems, 2005

Downloading textual hidden web content through keyword queries.

Alexandros Ntoulas, Petros Zerfos, Junghoo Cho

Proceedings of the ACM/IEEE Joint Conference on Digital Libraries, 2005

Modeling and Managing Content Changes in Text Databases.

Panagiotis G. Ipeirotis, Alexandros Ntoulas, Junghoo Cho, Luis Gravano

Proceedings of the 21st International Conference on Data Engineering, 2005

2004

What's new on the web?: the evolution of the web from a search engine perspective.

Alexandros Ntoulas, Junghoo Cho, Christopher Olston

Proceedings of the 13th international conference on World Wide Web, 2004

2002

Effective Change Detection Using Sampling.

Junghoo Cho, Alexandros Ntoulas

Proceedings of 28th International Conference on Very Large Data Bases, 2002

2001

Using a WWW Search Engine to Evaluate Normalization Performance for a Highly Inflectional Language.

Alexandros Ntoulas, Sofia Stamou, Manolis Tzagarakis

Proceedings of the Association for Computational Linguistic, 2001

2000

Use of a Morphosyntactic Lexicon as the Basis for the Implementation of the Greek Wordnet.

Alexandros Ntoulas, Sofia Stamou, I. Tsakou, Christos Tsalidis, Manolis Tzagarakis, Aristides Vagelatos

Proceedings of the Natural Language Processing, 2000