Search Results for author: Varuna De Silva

Found 13 papers, 2 papers with code

Player Pressure Map -- A Novel Representation of Pressure in Soccer for Evaluating Player Performance in Different Game Contexts

no code implementations29 Jan 2024 Chaoyi Gu, Jiaming Na, Yisheng Pei, Varuna De Silva

We propose a player pressure map to represent a given game scene, which lowers the dimension of raw data and still contains rich contextual information.

Fully Independent Communication in Multi-Agent Reinforcement Learning

1 code implementation26 Jan 2024 Rafael Pina, Varuna De Silva, Corentin Artaud, Xiaolan Liu

Multi-Agent Reinforcement Learning (MARL) comprises a broad area of research within the field of multi-agent systems.

Multi-agent Reinforcement Learning reinforcement-learning

Learning Independently from Causality in Multi-Agent Environments

no code implementations5 Nov 2023 Rafael Pina, Varuna De Silva, Corentin Artaud

Multi-Agent Reinforcement Learning (MARL) comprises an area of growing interest in the field of machine learning.

Multi-agent Reinforcement Learning Relation

Staged Reinforcement Learning for Complex Tasks through Decomposed Environments

no code implementations5 Nov 2023 Rafael Pina, Corentin Artaud, Xiaolan Liu, Varuna De Silva

Although still in simulation, the investigated situations are conceptually closer to real scenarios and thus, with these results, we intend to motivate further research in the subject.

reinforcement-learning Reinforcement Learning (RL)

Discovering Causality for Efficient Cooperation in Multi-Agent Environments

1 code implementation20 Jun 2023 Rafael Pina, Varuna De Silva, Corentin Artaud

In this paper, we investigate the applications of causality in MARL and how it can be applied in MARL to penalise these lazy agents.

Causal Discovery Multi-agent Reinforcement Learning

Embedding Contextual Information through Reward Shaping in Multi-Agent Learning: A Case Study from Google Football

no code implementations25 Mar 2023 Chaoyi Gu, Varuna De Silva, Corentin Artaud, Rafael Pina

The experiment results in the GRF environment prove that our reward shaping method is a useful addition to state-of-the-art MARL algorithms for training agents in environments with sparse reward signal.

Imitation Learning Multi-agent Reinforcement Learning

Causality Detection for Efficient Multi-Agent Reinforcement Learning

no code implementations24 Mar 2023 Rafael Pina, Varuna De Silva, Corentin Artaud

When learning a task as a team, some agents in Multi-Agent Reinforcement Learning (MARL) may fail to understand their true impact in the performance of the team.

Multi-agent Reinforcement Learning reinforcement-learning

Residual Q-Networks for Value Function Factorizing in Multi-Agent Reinforcement Learning

no code implementations30 May 2022 Rafael Pina, Varuna De Silva, Joosep Hook, Ahmet Kondoz

The performance of the proposed method is compared against several state-of-the-art techniques such as QPLEX, QMIX, QTRAN and VDN, in a range of multi-agent cooperative tasks.

Multi-agent Reinforcement Learning reinforcement-learning +1

A Critical Analysis of Patch Similarity Based Image Denoising Algorithms

no code implementations25 Aug 2020 Varuna De Silva

Most of the algorithms for image denoising has focused on the paradigm of non-local similarity, where image blocks in the neighborhood that are similar, are collected to build a basis for reconstruction.

Image Denoising

Adaptive Feature Processing for Robust Human Activity Recognition on a Novel Multi-Modal Dataset

no code implementations9 Jan 2019 Mirco Moencks, Varuna De Silva, Jamie Roche, Ahmet Kondoz

In this paper, we present a novel, multi-modal sensor dataset that encompasses nine indoor activities, performed by 16 participants, and captured by four types of sensors that are commonly used in indoor applications and autonomous vehicles.

Autonomous Vehicles BIG-bench Machine Learning +3

Robust Fusion of LiDAR and Wide-Angle Camera Data for Autonomous Mobile Robots

no code implementations17 Oct 2017 Varuna De Silva, Jamie Roche, Ahmet Kondoz

A combination of several different sensors such as LiDAR, radar, ultrasound sensors and cameras are utilized to sense the surrounding environment of autonomous vehicles.

Autonomous Vehicles

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