Search Results for author: Marcus Gallagher

Found 20 papers, 9 papers with code

Modularity based linkage model for neuroevolution

no code implementations2 Jun 2023 Yukai Qiao, Marcus Gallagher

Crossover between neural networks is considered disruptive due to the strong functional dependency between connection weights.

Community Detection

A Genetic Fuzzy System for Interpretable and Parsimonious Reinforcement Learning Policies

1 code implementation17 May 2023 Jordan T. Bishop, Marcus Gallagher, Will N. Browne

Results show the system is able to effectively explore the trade-off between policy performance and complexity, and learn interpretable, high-performing policies that use as few rules as possible.

reinforcement-learning Reinforcement Learning (RL)

Pittsburgh Learning Classifier Systems for Explainable Reinforcement Learning: Comparing with XCS

1 code implementation17 May 2023 Jordan T. Bishop, Marcus Gallagher, Will N. Browne

Learning Classifier Systems (LCSs) are evolutionary machine learning systems that can be categorised as eXplainable AI (XAI) due to their rule-based nature.

Explainable Artificial Intelligence (XAI) reinforcement-learning +1

Modularity in NEAT Reinforcement Learning Networks

1 code implementation13 May 2022 Humphrey Munn, Marcus Gallagher

Modularity is essential to many well-performing structured systems, as it is a useful means of managing complexity [8].

reinforcement-learning Reinforcement Learning (RL)

Approximate discounting-free policy evaluation from transient and recurrent states

no code implementations8 Apr 2022 Vektor Dewanto, Marcus Gallagher

We therefore propose a system of approximators for the bias (specifically, its relative value) from transient and recurrent states.

reinforcement-learning Reinforcement Learning (RL)

From Zero-Shot Machine Learning to Zero-Day Attack Detection

no code implementations30 Sep 2021 Mohanad Sarhan, Siamak Layeghy, Marcus Gallagher, Marius Portmann

The standard ML methodology assumes that the test samples are derived from a set of pre-observed classes used in the training phase.

Attribute BIG-bench Machine Learning +2

Feature Extraction for Machine Learning-based Intrusion Detection in IoT Networks

no code implementations28 Aug 2021 Mohanad Sarhan, Siamak Layeghy, Nour Moustafa, Marcus Gallagher, Marius Portmann

In an analysis of related works, it was observed that most researchers aim to obtain better classification results by using a set of untried combinations of Feature Reduction (FR) and Machine Learning (ML) techniques on NIDS datasets.

BIG-bench Machine Learning Network Intrusion Detection

Examining average and discounted reward optimality criteria in reinforcement learning

no code implementations3 Jul 2021 Vektor Dewanto, Marcus Gallagher

In reinforcement learning (RL), the goal is to obtain an optimal policy, for which the optimality criterion is fundamentally important.

reinforcement-learning Reinforcement Learning (RL)

A nearly Blackwell-optimal policy gradient method

1 code implementation28 May 2021 Vektor Dewanto, Marcus Gallagher

In this work, we develop a policy gradient method that optimizes the gain, then the bias (which indicates the transient performance and is important to capably select from policies with equal gain).

reinforcement-learning Reinforcement Learning (RL)

Benchmarking the Benchmark -- Analysis of Synthetic NIDS Datasets

no code implementations19 Apr 2021 Siamak Layeghy, Marcus Gallagher, Marius Portmann

Our results show that the two real-world datasets are quite similar among themselves in regards to most of the considered statistical features.

Benchmarking Network Intrusion Detection

Optimality-based Analysis of XCSF Compaction in Discrete Reinforcement Learning

1 code implementation3 Sep 2020 Jordan T. Bishop, Marcus Gallagher

Learning classifier systems (LCSs) are population-based predictive systems that were originally envisioned as agents to act in reinforcement learning (RL) environments.

OpenAI Gym reinforcement-learning +1

Avoiding Kernel Fixed Points: Computing with ELU and GELU Infinite Networks

1 code implementation20 Feb 2020 Russell Tsuchida, Tim Pearce, Chris van der Heide, Fred Roosta, Marcus Gallagher

Secondly, and more generally, we analyse the fixed-point dynamics of iterated kernels corresponding to a broad range of activation functions.

Gaussian Processes

Richer priors for infinitely wide multi-layer perceptrons

1 code implementation29 Nov 2019 Russell Tsuchida, Fred Roosta, Marcus Gallagher

The model resulting from partially exchangeable priors is a GP, with an additional level of inference in the sense that the prior and posterior predictive distributions require marginalisation over hyperparameters.

Reversible Jump Probabilistic Programming

1 code implementation16 Apr 2019 David A. Roberts, Marcus Gallagher, Thomas Taimre

In this paper we present a method for automatically deriving a Reversible Jump Markov chain Monte Carlo sampler from probabilistic programs that specify the target and proposal distributions.

Code Generation Probabilistic Programming

Exchangeability and Kernel Invariance in Trained MLPs

no code implementations19 Oct 2018 Russell Tsuchida, Fred Roosta, Marcus Gallagher

In the analysis of machine learning models, it is often convenient to assume that the parameters are IID.

BIG-bench Machine Learning

Invariance of Weight Distributions in Rectified MLPs

no code implementations ICML 2018 Russell Tsuchida, Farbod Roosta-Khorasani, Marcus Gallagher

An interesting approach to analyzing neural networks that has received renewed attention is to examine the equivalent kernel of the neural network.

A Stochastic Process Model of Classical Search

no code implementations27 Nov 2015 Dimitri Klimenko, Hanna Kurniawati, Marcus Gallagher

In this paper, we formalize the process of classical search as a metalevel decision problem, the Abstract Search MDP.

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