archimedes-Artificial Intelligence, Data Science, Algorithms-greece

 
Artificial Intelligence
 
Data Science
 
Algorithms

[Invited Talk] Privacy in Metalearning and Multitask Learning: Modeling and Separations

Dates
2025-02-12 14:30 - 16:00
Venue
Artemidos 1 - Amphitheater
Title: Privacy in Metalearning and Multitask Learning: Modeling and Separations

Speaker: Konstantina Bairaktari, PhD student in Khoury College of Computer Sciences at Northeastern University

Abstract: Model personalization allows a set of individuals, each facing a different learning task, to train models that are more accurate for each person than those they could develop individually. The goals of personalization are captured in a variety of formal frameworks, such as multitask learning and metalearning. Combining data for model personalization poses risks for privacy because the output of an individual's model can depend on the data of other individuals. In this work we undertake a systematic study of differentially private personalized learning. Our first main contribution is to construct a taxonomy of formal frameworks for private personalized learning. This taxonomy captures different formal frameworks for learning as well as different threat models for the attacker. Our second main contribution is to prove separations between the personalized learning problems corresponding to different choices. In particular, we prove a novel separation between private multitask learning and private metalearning. This talk is based on joint work with Maryam Aliakbarpour, Adam Smith, Marika Swanberg and Jonathan Ullman.

SHORT BIO: Konstantina is a PhD student in Khoury College of Computer Sciences at Northeastern University, where she is advised by Huy Le Nguyen and Jonathan Ullman. Before joining Northeastern, she received her diploma in Electrical and Computer Engineering from the National Technical University of Athens. Her research interests are in theoretical approaches to fairness in machine learning and data privacy. 


You can also attend online through MS-Teams by following the link below

https://teams.microsoft.com/l/meetup-join/19%3ameeting_NzE4MjZkZGItZWE3NS00NzQ5LTk0OTItNWMzMzE3NjdkYjU4%40thread.v2/0?context=%7b%22Tid%22%3a%226ae07702-c5f7-4f38-9b87-acad62a75d93%22%2c%22Oid%22%3a%22700280a8-c91f-41bd-9bf8-38b7959b4a6f%22%7d  


 
 

Vision

To position Greece as a leading player in AI and Data Science

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Mission

To build an AI Excellence Hub in Greece where the international research community can connect, groundbreaking ideas can thrive, and the next generation of scientists emerges, shaping a brighter future for Greece and the world

 

Welcome to ARCHIMEDES, a vibrant research hub connecting the global AI and Data Science research community fostering groundbreaking research in Greece and beyond. Its dedicated core team, comprising lead researchers, affiliated researchers, Post-Docs, PhDs and interns, is committed to advancing basic and applied research in Artificial Intelligence and its supporting disciplines, including Algorithms, Statistics, Learning Theory, and Game Theory organized around 6 core research areas. By collaborating with Greek and Foreign Universities and Research Institutes, ARCHIMEDES disseminates its research findings fostering knowledge exchange and providing enriching opportunities for students. Leveraging AI to address real-world challenges, ARCHIMEDES promotes innovation within the Greek ecosystem and extends its societal impact. Established in January 2022, as a research unit of the Athena Research Center with support from the Committee Greece 2021, ARCHIMEDES is funded for its first four years by the EU Recovery and Resilience Facility (RRF).

 
 

NEWS

 
Archimedes Reaches Milestone of 200 Publications

Archimedes Reaches Milestone of 200 Publications

12 February 2025

Archimedes is proud to announce that its researchers have published over 200 scientific publications in top-tier conferences (NeurIPS, ICLR, ICML) and journals. Archimedes maintains a vibrant scientific community of over 130 researchers, including more than 60 senior researchers (faculty members from Greece and abroad), 12 postdoctoral fellows, and 55 PhD students, along with over 20 undergraduate interns from various disciplines.

Happy International Greek Language Day!

Happy International Greek Language Day!

9 February 2025

Today, we celebrate the historical, cultural, and linguistic significance of the Greek language. While Standard Modern Greek often takes center stage, we at Archimedes - AI and Data Science Research Hub recognize the impressive diversity and great cultural significance of its numerous dialects. These dialects present both exciting opportunities and complex challenges for AI and Large Language Models (LLMs) because each one of them presents unique linguistic features and all of them are low resourced. That’s why we’re using cutting-edge AI to document, digitize, and analyze these invaluable linguistic treasures, ensuring their preservation and accessibility for generations to come.

Two Research Positions in Data Stream Management Systems & Big Data Management

Two Research Positions in Data Stream Management Systems & Big Data Management

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We are pleased to announce the availability of two research positions in data stream management systems and big data management, to be co-supervised by Assistant Professor Odysseas Papapetrou from the Eindhoven University of Technology (TU/e) in the Netherlands and Professor Minos Garofalakis from the Technical University of Crete in Greece.

John von Neumann Theory Prize to Christos Papadimitriou and Mihalis Yannakakis

John von Neumann Theory Prize to Christos Papadimitriou and Mihalis Yannakakis

17 December 2024

Computer Science Professor and Principal Scientist of ARCHIMEDES Unit of the Athena Research Center Christos Papadimitriou and Computer Science Professor and Member of the Scientific Board of ARCHIMEDES Mihalis Yannakakis received the John von Neumann Theory Prize for their research in computational complexity theory that explores the boundaries of efficiently solving decision and optimization problems crucial to operations research and management sciences.  You may read more information here.

Memorandum of Understanding with The Smile of the Child

Memorandum of Understanding with The Smile of the Child

16 December 2024

On December 4, 2024, Professor Ioannis Emiris, Chairman of the Board and General Director of Athena Research Center, and Mr. Kostas Giannopoulos, Chairman of the Board of the Organization "The Smile of the Child," signed a Memorandum of Understanding. The Memorandum outlines the establishment of a long-term partnership between the Athena Research Center and "The Smile of the Child," aiming to improve children's quality of life, raise awareness, and educate them about their rights.

More news items here
 
 

The project “ARCHIMEDES Unit: Research in Artificial Intelligence, Data Science and Algorithms” with code OPS 5154714 is implemented by the National Recovery and Resilience Plan “Greece 2.0” and is funded by the European Union – NextGenerationEU.

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