archimedes-Artificial Intelligence, Data Science, Algorithms-greece

 
Artificial Intelligence
 
Data Science
 
Algorithms

[Mechanism design theme invited talk] Sequential Choice and Self-Reinforcing Rankings

Dates
2025-03-05 14:50 - 16:00
Venue
Artemidos 1 - Amphitheater
TITLE: Sequential Choice and Self-Reinforcing Rankings

ABSTRACT: People’s behavior is informed and influenced by other people’s choices. In many online technologies, for instance, aggregate information about the choices of other individuals is encoded in the form of rankings. Such rankings, in turn, have a direct impact on people’s future choices. What are the long-term dynamics of these rankings, and do the dynamics depend on specific assumptions about people’s behavior? In this paper, we propose a general framework for modeling the dynamics in settings where information about peoples’ past choices is recorded as a ranking and influences future choices. We find a general condition for convergence, show that it is satisfied by many important models in economics and beyond, and characterize the possible limits in terms of the choice probabilities.


SHORT BIO: Pantelis Pipergias Analytis (https://www.sdu.dk/en/forskning/forskningsenheder/samf/sod/simple-employee-list-sod/group-members/pantelis-analytis ) is an Associate Professor at the Department of Business and Management and senior fellow at the Danish Institute of Advanced Study. In his research, Pantelis develops mathematical and computational models of individual and collective behavior and uses experiments, big-data and large-scale simulations to assess their descriptive and prescriptive value. Pantelis has studied economics at the University of Athens, cognitive science at EHESS in Paris and received his PhD in psychology from Humboldt University in Berlin. Before joining the University of Southern Denmark, he worked as a predoctoral researcher at the Max Planck Institute for Human Development in Berlin and as a postdoctoral researcher at the Computer and Information Science departments at Cornell University in Ithaca. 

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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 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

 
Merry Christmas!

Merry Christmas!

🌟 The Archimedes Community of the Athena Research Center, Greece, would like to wish everyone a Merry Christmas and a holiday season filled with happiness, gratitude, and good health. ✨

Archimedes Postdoc Vassilis Alimisis Will Conduct a Tutorial at ICM 2025

Archimedes Postdoc Vassilis Alimisis Will Conduct a Tutorial at ICM 2025

Vassilis Alimisis, a Postdoc at the Archimedes Unit of the Athena Research Center in Greece, a Collaborating Researcher at the School of Electrical and Computer Engineering at the National Technical University of Athens in Greece, an Adjunct Lecturer at the Department of Digital Industry Technologies at the National and Kapodistrian University of Athens in Greece, and a National Postdoctoral Research Fellow of the Bodossaki Foundation, Athens, Greece, will deliver a tutorial at the 2025 International Conference on Microelectronics (ICM), which will take place on 14-17 December 2025, in Cairo, Egypt.

Applications for the Greek Olympiad in Artificial Intelligence for Middle and High School Students are Now Open!

Applications for the Greek Olympiad in Artificial Intelligence for Middle and High School Students are Now Open!

The Preliminary Phase "Talos" of the Greek Olympiad in Artificial Intelligence (PDTN) is now open for online participation. This competition for middle and high school students will run from December 1, 2025 until March 1, 2026, and students will be asked to solve four problems: one on Decision Trees (Δεντρα Αποφασης), one on CAPTCHA Challenges (Επίλυση CAPTCHA), one for Emotion Classification (Συναισθηματα), and one on Movie Recommendation Systems (Επόμενη Ταινία).

Archimedes Talk by Yuriy Brun on

Archimedes Talk by Yuriy Brun on "LLMs and Mistrust, Discrimination, and Bugs in Software"

On Tuesday 25 November, 2025, from 1:00 pm to 2:30 pm, at the Archimedes Amphitheatre (1 Artemidos Street, 15125, Marousi, Archimedes, Athena Research Center, Greece), Professor Yuriy Brun, Professor at the Manning College of Information & Computer Sciences, University of Massachusetts Amherst, USA, and Visiting Researcher at Archimedes Research Unit, Athena Research Center, Greece, will deliver an Archimedes talk on "LLMs and Mistrust, Discrimination, and Bugs in Software."

 
 

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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