ELLIS Unit Milan - RIKEN AIP Joint Workshop

We will hold a joint workshop with ELLIS Unit Milan as follows.
Venue: Online
Co-organized with: ELLIS Unit Milan
Date and Time: May 7–8, 2026
Day 1 - May 7
Time: 14:00 - 17:40 (UTC+2) / 21:00 - 00:40 (UTC+9, JST)
Day 2 - May 8
Time: 9:00 - 16:30 (UTC+2) / 16:00 - 23:30 (UTC+9, JST)

Program

Day 1 - May 7

UTC+2 / UTC+9, JST
14:00 / 21:00 Nicolò Cesa-Bianchi (ELLIS Unit Milan)
Title: Introduction to ELLIS Unit Milan
14:10 / 21:10 Masashi Sugiyama (RIKEN-AIP)
Title: Introduction to RIKEN-AIP

Talks

14:20 / 21:20 Masashi Sugiyama (RIKEN-AIP)
Title: Reward modeling in reinforcement learning
14:45 / 21:45 Masaaki Imaizumi (RIKEN-AIP)
Title: Dynamical analysis for deep neural networks and transformers
15:10 / 22:10 Fabio Stella (ELLIS Unit Milan)
Title: Privacy-Aware Bayesian Networks: A Credal Approach

15:35 / 22:35 Break

Talks

16:00 / 23:00 Shinji Ito (RIKEN-AIP)
Title: On Adaptive Learning Rate for Follow-the-Regularized-Leader
16:25 / 23:25 Han Bao (RIKEN-AIP)
Title: Closer look at implicit bias of gradient descent
16:50 / 00:50 Elisabetta Cornacchia (ELLIS Unit Milan)
Title: The Benefits of Temporal Correlations: SGD Learns k-Juntas from Random Walks Efficiently
17:15 / 00:15 Thong Pham (RIKEN-AIP)
Title: Resolving bows in causal additive models with hidden variables
17:40 / 00:40 Closing

Day 2 - May 8

UTC+2 / UTC+9, JST

Talks

9:00 / 16:00 Matteo Papini (ELLIS Unit Milan)
Title: Laplacian Representations for Reinforcement Learning
9:25 / 16:25 Francesco Bacchiocchi (ELLIS Unit Milan)
Title: Regret Minimization for Piecewise Linear Rewards: Contracts, Auctions, and Beyond
9:50 / 16:50 Emmanuel Esposito (ELLIS Unit Milan)
Title: Adaptation Costs in Online Learning: Movement Costs, Delays, and Memory
10:15 / 17:15 Riccardo Poiani (ELLIS Unit Milan)
Title: Advances on General Pure Exploration Problems

10:40 / 17:40 Break

11:05 / 18:05 Davide Chicco (ELLIS Unit Milan)
Title: The advantages of our proposed Saturn coefficient over continuity and trustworthiness for UMAP dimensionality reduction evaluation
11:30 / 18:30 Francesco Bacchiocchi (ELLIS Unit Milan)
Title: Regret Minimization for Piecewise Linear Rewards: Contracts, Auctions, and Beyond
11:55 / 18:55 Marco Braga (ELLIS Unit Milan)
Title: Task Arithmetic for Contextualizing Language Models

12:20 / 19:20 Lunch

14:00 / 21:00 Taira Tsuchiyai (RIKEN-AIP)
Title: Online Learning and Game Theory: Regret Lower Bounds and Adaptive Learning Dynamics
14:25 / 21:25 Kazuto Fukuchi (RIKEN-AIP)
Title: On Improving Target Sample Complexity as Data Scales
14:50 / 21:50 Andrew Jacobsen (ELLIS Unit Milan)
Title: Unconstrained Linear Bandits

15:15 / 22:15 Break

15:40 / 22:40 Sherief Hashima (RIKEN-AIP)
Title: Smart Wireless Power Meets Intelligence: AI-Driven RIS-SWIPT for IoT Networks
16:05 / 23:05 Jingjing Bai (RIKEN-AIP)
Title: A Time-Frequency Dual Domain Learning Framework for Long-term Time Series Forecasting
16:30 / 23:30 Closing