archimedes-Artificial Intelligence, Data Science, Algorithms-greece

 
Artificial Intelligence
 
Data Science
 
Algorithms

[Archimedes Talks Series] Algorithmic Aspects of Clustering

Dates
2024-09-05 13:00 - 16:00
Venue
Archimedes Amphitheater - Artemidos 1

Με ιδιαίτερη χαρά σας προσκαλούμε σε σειρά διαλέξεων με θέμα Algorithmic Aspects of Clustering, που θα δώσει ο Βάγγος Χατζηαφράτης, Assistant Professor στο University of California in Santa Cruz και συνεργαζόμενος ερευνητής στον Αρχιμήδη. 

 

Οι διαλέξεις θα γίνουν την τρέχουσα και την ερχόμενη εβδομάδα στο κτήριο του Αρχιμήδη (Αρτέμιδος 1, Μαρούσι), σύμφωνα με το παρακάτω πρόγραμμα: 

 

— 1η διάλεξη: Πέμπτη 5 Σεπτεμβρίου, ώρες 13:00 - 16:00 

— 2η διάλεξη: Παρασκευή 6 Σεπτεμβρίου, ώρες 13:00 - 16:00 

— 3η διάλεξη: Τρίτη 10 Σεπτεμβρίου, ώρες 13:00 - 16:00

— 4η διάλεξη: Πέμπτη 12 Σεπτεμβρίου, ώρες 13:00 - 15:00 

 

Τα θέματα που θα καλυφθούν στις διαλέξεις περιλαμβάνουν:

— Hierarchical Clustering: Algorithms and Hardness
— Connections to Graph Partitioning and bottom-up methods
— Semidefinite Programming & Applications to Graph Partitioning and Clustering
— Beyond Worst Case Analyses
— Contrastive Embeddings 
— Open Problems in the area

Οι διαλέξεις σκοπεύουν να καλύψουν κάποια βασική ύλη για clustering and hierarchical clustering with optimization techniques, metric embeddings and non-metric embeddings, και να παρουσιάσουν κάποια σημαντικά, παλαιότερα και νεότερα, ανοικτά προβλήματα στην περιοχή.   


Short Bio:
Vaggos Chatziafratis is an Assistant Professor of Computer Science & Engineering at the University of California in Santa Cruz, where he is part of the Theoretical Computer Science group. His research lies at the intersection of approximation algorithms and machine learning, focusing on the design and analysis of approximation algorithms/hardness for clustering problems, and on understanding neural networks through the lens of dynamical systems. Vaggos completed his MS and PhD at Stanford University in the Computer Science Department, where he was advised by Tim Roughgarden and Moses Charikar. Before Stanford, he finished with a Diploma from the ECE department of the National Technical University of Athens. Before joining UC Santa Cruz, he did a postdoc at Google Research under Vahab Mirrokni and Mohammad Mahdian. He also did a postdoc at Northwestern under Konstantin Makarychev, Aravindan Vijayaraghavan and Samir Khuller. Vaggos is the recipient of a FODSI postdoc fellowship at MIT (under Piotr Indyk) and Northeastern. His research at UCSC has been supported by a Hellman Fellowship.

________________________________________________________________________________

Microsoft Teams Need help?

Join the meeting now

Meeting ID: 310 672 270 019

Passcode: UXFCmD

For organizers: Meeting options

________________________________________________________________________________

 
 

Vision

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

image
image

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 8 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 AGT Afternoon Event (ΑAGTA) will take place on 4 February 2026 at Archimedes premises

Archimedes AGT Afternoon Event (ΑAGTA) will take place on 4 February 2026 at Archimedes premises

2 February 2026

Archimedes AGT Afternoon Event (ΑAGTA) is a newly-established scientific event, focusing on Algorithmic Game Theory and Artificial Intelligence. The first AAGTA workshop will take place on 4 February 2026 at the Archimedes Amphitheatre at Archimedes Unit, Athena Reseach Center, Greece, and will feature two keynote speeches: one by Prof. Paul Goldberg of the University of Oxford, UK, and one by Prof. Christos Papadimitriou of Columbia University, USA and Archimedes Unit, Athena Reseach Center, Greece.

Archimedes Seminar by Michael I. Jordan on

Archimedes Seminar by Michael I. Jordan on "Nonnegative Supermartingales, Sequential Testing, and Statistical Contract Theory"

28 January 2026

On Tuesday 10 February, 2026, from 3:00 pm to 5:00 pm, at the Archimedes Amphitheatre (1 Artemidos Street, 15125, Marousi, Archimedes, Athena Research Center, Greece), Michael I. Jordan (Researcher at Inria Paris, France, and Professor Emeritus in the Department of Electrical Engineering & Computer Science, and in the Department of Statistics at the University of California, Berkeley, USA, will deliver an Archimedes Seminar on "Nonnegative Supermartingales, Sequential Testing, and Statistical Contract Theory."

Archimedes Talk by Jason Milionis on

Archimedes Talk by Jason Milionis on "From Myerson to Automated Markets: New Research Directions in Exchange Design"

25 January 2026

On Wednesday 28 January, 2026, from 4:00 pm to 5:00 pm, at the Archimedes Amphitheatre (1 Artemidos Street, 15125, Marousi, Archimedes, Athena Research Center, Greece), Jason Milionis, a 5th and final year Ph.D. candidate in the Computer Science Department at Columbia University, USA, and a Senior Researcher at Category Labs, will deliver an Archimedes talk on "From Myerson to Automated Markets: New Research Directions in Exchange Design."

Archimedes Talk by Dimitris Giovanis on

Archimedes Talk by Dimitris Giovanis on "Learning the “Right” Space for Data-driven Modeling and Uncertainty Quantification in Complex / Multiscale Systems"

20 January 2026

On Wednesday 4 February, 2026, from 1:00 pm to 2:00 pm, at the Archimedes Amphitheatre (1 Artemidos Street, 15125, Marousi, Archimedes, Athena Research Center, Greece), Professor Dimitris Giovanis, Assistant Research Professor in the Department of Civil and Systems Engineering, The Johns Hopkins University, USA, and fellow of the Hopkins Extreme Materials Institute, a member of the Center on Artificial Intelligence for Materials in Extreme Environments, the Institute for Data Intensive Engineering and Science, the Johns Hopkins Mathematical Institute for Data Science, and the Data Science and AI Institute, will deliver an Archimedes talk on "Learning the “Right” Space for Data-driven Modeling and Uncertainty Quantification in Complex / Multiscale Systems."

Director Timos Sellis Moderates a Panel on AI and Health Policy

Director Timos Sellis Moderates a Panel on AI and Health Policy

8 January 2026

On Thursday, 11 December 2025, during the 2025 Panhellenic Congress on Health Economics and Policy, Professor Timos Sellis moderated an expert panel on ¨How AI May Transform Healthcare and Health Policies” and exchanged views with Professor Costas Athanassakis, Professor Theoklis Zaoutis, Dr. Georgios Papanastasiou, and Dr. Harietta Eleftherochorinou.

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.

greece2.0 eu_arch_logo_en

 

Stay connected! Subscribe to our mailing list by emailing sympa@lists.athenarc.gr
with the subject "subscribe archimedes-news Firstname LastName"
(replace with your details)