Search Results for author: Victor-Alexandru Darvariu

Found 11 papers, 4 papers with code

Graph Neural Modeling of Network Flows

no code implementations12 Sep 2022 Victor-Alexandru Darvariu, Stephen Hailes, Mirco Musolesi

Network flow problems, which involve distributing traffic such that the underlying infrastructure is used effectively, are ubiquitous in transportation and logistics.

Graph Attention Graph Learning

Trust-based Consensus in Multi-Agent Reinforcement Learning Systems

no code implementations25 May 2022 Ho Long Fung, Victor-Alexandru Darvariu, Stephen Hailes, Mirco Musolesi

An often neglected issue in multi-agent reinforcement learning (MARL) is the potential presence of unreliable agents in the environment whose deviations from expected behavior can prevent a system from accomplishing its intended tasks.

Multi-agent Reinforcement Learning reinforcement-learning +1

Solving Graph-based Public Goods Games with Tree Search and Imitation Learning

1 code implementation NeurIPS 2021 Victor-Alexandru Darvariu, Stephen Hailes, Mirco Musolesi

In particular, we define a Markov Decision Process which incrementally generates an mIS, and adopt a planning method to search for equilibria, outperforming existing methods.

Combinatorial Optimization Imitation Learning

Reinforcement Learning on Encrypted Data

no code implementations16 Sep 2021 Alberto Jesu, Victor-Alexandru Darvariu, Alessandro Staffolani, Rebecca Montanari, Mirco Musolesi

The growing number of applications of Reinforcement Learning (RL) in real-world domains has led to the development of privacy-preserving techniques due to the inherently sensitive nature of data.

Privacy Preserving reinforcement-learning +1

Planning Spatial Networks with Monte Carlo Tree Search

no code implementations12 Jun 2021 Victor-Alexandru Darvariu, Stephen Hailes, Mirco Musolesi

We tackle the problem of goal-directed graph construction: given a starting graph, a budget of modifications, and a global objective function, the aim is to find a set of edges whose addition to the graph achieves the maximum improvement in the objective (e. g., communication efficiency).

graph construction

Solving Graph-based Public Good Games with Tree Search and Imitation Learning

1 code implementation12 Jun 2021 Victor-Alexandru Darvariu, Stephen Hailes, Mirco Musolesi

Public goods games represent insightful settings for studying incentives for individual agents to make contributions that, while costly for each of them, benefit the wider society.

Combinatorial Optimization Imitation Learning

Goal-directed graph construction using reinforcement learning

1 code implementation30 Jan 2020 Victor-Alexandru Darvariu, Stephen Hailes, Mirco Musolesi

In this work, we formulate the construction of a graph as a decision-making process in which a central agent creates topologies by trial and error and receives rewards proportional to the value of the target objective.

Decision Making graph construction +2

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