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[Archimedes Talk Series] Cardinal-Utility Matching Markets: From Tractability to Intractability ... and Back!

Dates
2024-06-25 14:30 - 16:00
Venue
Artemidos 1 - Amphitheater

 

 

 Title: Cardinal-Utility Matching Markets: From Tractability to Intractability ... and Back!


Presenter: Vijay Vazirani – Distinguished Professor, UC Irvine

Screenshot 2024 06 25 at 230pm
Abstract: For a mechanism to be highly impactful, it must have both good game-theoretic properties and computational efficiency. A poster child in this respect is the Gale-Shapley work (1962) on stable matching. This talk concerns cardinal-utility matching markets, for which the most prominent mechanism was due to Hylland and Zeckhauser (1979); this pricing-based mechanism has all the game-theoretic properties one could ask for. However, recent work has established it to be computationally intractable in theory and practice.

This talk will summarize several papers which:
a. Established intractability.
b. Proposed a replacement mechanism based on Nash bargaining.
c. Established its game-theoretic and computational properties and gave evidence that there may not be a better alternative.

Based on these (1, 2, 3, 4, 5) and other papers.

Bio: Vijay Vazirani is Distinguished Professor at the University of California, Irvine. A description of his research appears in the citation of his 2022 INFORMS John von Neumann Theory Prize. Recently he completed a proof of the Micali-Vazirani maximum matching algorithm, over four decades after the publication of the algorithm itself. His most recent book (co-edited), Online and Matching-Based Market Design, appeared in July 2023.


 

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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

 
GameSec 2025 just Around the Corner!

GameSec 2025 just Around the Corner!

9 October 2025

The 16th Conference on Game Theory and AI for Security (GameSec25), an event strongly supported by Archimedes, Athena Research Center, Greece will take place at the National Technical University of Athens, Greece from October 13-15 2025. "With the rapid advancement of artificial intelligence, game theory, and security technologies, the resilience and trustworthiness of modern systems is more critical than ever. The 2025 Conference on Game Theory and AI for Security focuses on leveraging strategic decision-making, adversarial reasoning, and computational intelligence to address security challenges in complex and dynamic environments.

11 Papers Accepted at NeurIPS 2025!

11 Papers Accepted at NeurIPS 2025!

7 October 2025

We are happy to announce that 11 papers from Archimedes, Athena Research Center, Greece, have been accepted at the Thirty-Ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025)!NeurIPS is a major annual event in the artificial intelligence and machine learning community and this year it will take place from December 2 to December 7 at the San Diego Convention Center, California, USA.

Archimedes Postdoc will Conduct a Tutorial at the International Conference on Microelectronics 2025

Archimedes Postdoc will Conduct a Tutorial at the International Conference on Microelectronics 2025

6 October 2025

Vassilis Alimisis, a postdoctoral researcher at Archimedes, Athena Research Center, Greece, will deliver a tutorial on "Low-Power Analog Hardware Classifier Architecture for ML Applications: From A to Z" at the International Conference on Microelectronics (ICM 2025), taking place on 14-17 December, 2025, in Cairo, Egypt.Abstract: This tutorial provides a comprehensive introduction to the design and implementation of low-power analog hardware classifiers tailored for machine learning (ML) applications, with a focus on energy-constrained environments such as edge devices and biomedical wearables. With the growing need for fast, efficient, and real-time data processing, analog computing has re-emerged as a promising solution that enables in-memory computation and significantly reduces power consumption compared to conventional digital processors.

Archimedes Flagship Project in Cardiology and AI is Featured in the News!

Archimedes Flagship Project in Cardiology and AI is Featured in the News!

30 September 2025

Archimedes Research Unit of the Athena Research Center, Greece, is featured in a recent article in Dnews. This article is about an Archimedes flagship project in cardiology and AI that aims to use "two-dimensional echocardiographic data to develop deep learning tools and improve the treatment of heart problems."This project will be developed in collaboration with the Onassis Cardiac Surgery Center and the Archimedes Research Unit of the Athena Research Center, Greece. The Onassis Cardiac Surgery Center will contribute cardiac data and medical expertise, while the Archimedes Research Unit will set up a team of researchers who will develop advanced techniques and AI models that will address specific cardiological issues.

Best Paper Award at FAIEMA 202

Best Paper Award at FAIEMA 202

29 September 2025

Vasileios Moustakas, PhD student at the School of Electrical and Computer Engineering - NTUA and Academic Fellow at Archimedes, Athena Research Center, Greece, Konstantinos Cheliotis and Anna Mylona, both MEng students at the School of Electrical and Computer Engineering - NTUA and interns at Archimedes, Athena Research Center, Vassilis Alimisis, Postdoctoral Researcher at Archimedes, Athena Research Center, and Paul Sotiriadis, Lead Researcher at Archimedes, Athena Research Center, and a Professor at the School of Electrical and Computer Engineering - NTUA, received the Best Paper Award (PhD Symposium) at the 3rd International Conference on Frontiers of Artificial Intelligence, Ethics, and Multidisciplinary Applications (FAIEMA 2025), which took place on 18-19 September in 2025 at Stavanger, Norway.

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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