Quantifying novelty in the archaeological record (2011)
Journal Article
(2011). Quantifying novelty in the archaeological record. https://doi.org/10.4207/PA.2011.ART50

This paper describes two methods for quantification of novelty, which are not well known in archaeology. These extend the methodological toolkit available to researchers into culture and innovation. The methods are:

- Inverse frequency weighting.... Read More about Quantifying novelty in the archaeological record.

Unsupervised Complexity Reduction of Sensor Data for Robot Learning and Adaptation (2010)
Presentation / Conference Contribution
(2010, August). Unsupervised Complexity Reduction of Sensor Data for Robot Learning and Adaptation. Presented at Towards Autonomous Robotic Systems 2010, University of Plymouth

Pruning reservoirs with random static projections (2010)
Presentation / Conference Contribution
(2010, August). Pruning reservoirs with random static projections. Presented at Machine Learning for Signal Processing (MLSP), 2010 IEEE International Workshop on, Kittila

Characterization and stability of localized bulging/necking in inflated membrane tubes (2010)
Journal Article
(2010). Characterization and stability of localized bulging/necking in inflated membrane tubes. IMA Journal of Applied Mathematics, 581 - 602. https://doi.org/10.1093/imamat/hxq026

We consider localized bulging/necking in an inflated hyperelastic membrane tube with closed ends. We first show that the initiation pressure for the onset of localized bulging is simply the limiting pressure in uniform inflation when the axial force... Read More about Characterization and stability of localized bulging/necking in inflated membrane tubes.

An Innovative System for Vineyard Management in Sicily (2010)
Journal Article
Ortolani. (2010). An Innovative System for Vineyard Management in Sicily. Journal of Agricultural Engineering, https://doi.org/10.4081/jae.2010.1.13

The aim of this study was to monitor the micro-climate of the grapevine in order to detect the adversities of the spring period (especially April and May), while reducing the operating costs of the vineyard, and increasing the overall quality of grap... Read More about An Innovative System for Vineyard Management in Sicily.

Solitary waves in fluid-filled elastic tubes: existence, persistence, and the role of axial displacement (2010)
Journal Article
(2010). Solitary waves in fluid-filled elastic tubes: existence, persistence, and the role of axial displacement. IMA Journal of Applied Mathematics, 257 - 268. https://doi.org/10.1093/imamat/hxq004

We reexamine the problem of solitary wave propagation in a fluid-filled elastic membrane tube using a much simplified procedure. It is shown that there may exist four families of solitary waves with speeds close to those given by the linear dispersio... Read More about Solitary waves in fluid-filled elastic tubes: existence, persistence, and the role of axial displacement.

On undecidability bounds for matrix decision problems (2008)
Journal Article
Bell, P. (2008). On undecidability bounds for matrix decision problems. Theoretical Computer Science, 3 - 13. https://doi.org/10.1016/j.tcs.2007.10.025

In this paper we consider several reachability problems such as vector reachability, membership in matrix semigroups and reachability problems in piecewise linear maps. Since all of these questions are undecidable in general, we work on lowering the... Read More about On undecidability bounds for matrix decision problems.

Kernel Fisher Discriminant Analysis in Full Eigenspace (2008)
Book Chapter
Mandal. (2008). Kernel Fisher Discriminant Analysis in Full Eigenspace. In Proceedings of the 2007 International Conference on Image Processing, Computer Vision, & Pattern Recognition, IPCV 2007, June 25-28, 2007, Las Vegas Nevada, (235-241)

This work proposes a method which enables us to perform kernel Fisher discriminant analysis in the whole
eigenspace for face recognition. It employs the ratio of eigenvalues to decompose the entire kernel feature space into two subspaces: a reliable... Read More about Kernel Fisher Discriminant Analysis in Full Eigenspace.

Linear and nonlinear wave propagation in coated or uncoated elastic half-spaces (2007)
Book Chapter
(2007). Linear and nonlinear wave propagation in coated or uncoated elastic half-spaces. In Waves in Nonlinear Pre-Stressed Materials (103-127)

In these lectures, we discuss three closely related topics. We first discuss derivation of the nonlinear evolution equation for surface acoustic waves and show that all known methods of derivation should and do give the same evolution equation. We th... Read More about Linear and nonlinear wave propagation in coated or uncoated elastic half-spaces.

A note on perturbation formulae for the surface-wave speed due to perturbations in material properties (2007)
Journal Article
(2007). A note on perturbation formulae for the surface-wave speed due to perturbations in material properties. Journal of Elasticity, 187 - 192. https://doi.org/10.1007/s10659-007-9130-4

In a recent paper by Tanuma and Man, a two-term asymptotic formula was derived for the speed of surface waves propagating in an anisotropic elastic half-space whose elastic moduli differ only slightly from those for a (base) isotropic elastic materia... Read More about A note on perturbation formulae for the surface-wave speed due to perturbations in material properties.

Neuroevolution of agents capable of reactive and deliberative behaviours in novel and dynamic environments (2007)
Journal Article
Channon. (2007). Neuroevolution of agents capable of reactive and deliberative behaviours in novel and dynamic environments. Lecture notes in computer science, 345 - 354. https://doi.org/10.1007/978-3-540-74913-4_35

Both reactive and deliberative qualities are essential for a good action selection mechanism. We present a model that embodies a hybrid of two very different neural network architectures inside an animat: one that controls their high level deliberati... Read More about Neuroevolution of agents capable of reactive and deliberative behaviours in novel and dynamic environments.

Unbounded Evolutionary Dynamics in a System of Agents that Actively Process and Transform Their Environment (2006)
Journal Article
Channon. (2006). Unbounded Evolutionary Dynamics in a System of Agents that Actively Process and Transform Their Environment. Genetic Programming and Evolvable Machines, 253 - 281. https://doi.org/10.1007/s10710-006-9009-3

Bedau et al.'s statistical classification system for long-term evolutionary dynamics provides a test for open-ended evolution. Making this test more rigorous, and passing it, are two of the most important open problems for research into systems of ag... Read More about Unbounded Evolutionary Dynamics in a System of Agents that Actively Process and Transform Their Environment.

The N-strikes-out algorithm: A steady-state algorithm for coevolution (2006)
Journal Article
Channon. (2006). The N-strikes-out algorithm: A steady-state algorithm for coevolution

We introduce the N-strikes-out algorithm, a simple steady-state genetic algorithm for competitive coevolution. The algorithm can be summarised as follows: Run competitions between randomly chosen individuals, keep track of the number of defeats for e... Read More about The N-strikes-out algorithm: A steady-state algorithm for coevolution.

Analysing co-evolution among artificial 3D creatures (2006)
Book Chapter
Channon. (2006). Analysing co-evolution among artificial 3D creatures. In Lecture Notes in Computer Science (167 -178)

This paper is concerned with the analysis of coevolutionary dynamics among 3D artificial creatures, similar to those introduced by Sims (1). Coevolution is subject to complex dynamics which are notoriously difficult to analyse. We introduce an improv... Read More about Analysing co-evolution among artificial 3D creatures.

An investigation of software engineering curricula (2005)
Journal Article
(2005). An investigation of software engineering curricula. Journal of Systems and Software, 325 - 335. https://doi.org/10.1016/j.jss.2004.03.016

We adapted a survey instrument developed by Timothy Lethbridge to assess the extent to which the education delivered by four UK universities matches the requirements of the software industry. We propose a survey methodology that we believe addresses... Read More about An investigation of software engineering curricula.

A virtual creatures model for studies in artificial evolution (2005)
Book Chapter
Channon. (2005). A virtual creatures model for studies in artificial evolution. In 2005 IEEE Congress on Evolutionary Computation, vols 1-3, proceedings (565 -572)

We present the results of our replication of Karl Sims' work on the evolution of artificial creatures in a physically realistic 3D environment. We used standard McCulloch-Pitts neurons instead of a more complex set of ad hoc neurons, which we believe... Read More about A virtual creatures model for studies in artificial evolution.

An agent based co-operative preference model (2003)
Thesis
Jayousi, R. An agent based co-operative preference model. (Thesis). Keele University. https://keele-repository.worktribe.com/output/1020265

Distributed problem solving is often characterised by multiple valid solutions, a solution being considered to be valid if it meets all the constraints. When there are multiple valid solutions, the user has a choice, which can be specified in terms o... Read More about An agent based co-operative preference model.

Improving and still passing the ALife test: Component-normalised activity statistics classify evolution in Geb as unbounded (2003)
Book Chapter
Channon. (2003). Improving and still passing the ALife test: Component-normalised activity statistics classify evolution in Geb as unbounded. In Artificial Life VIII: proceedings of the Eighth International Conference on Artificial Life (173 -181)

Bedau, Snyder & Packard’s (1998) classification system for long-term evolutionary dynamics provides a test for openended evolution. Making this ALife test more rigorous, and passing it, are two of the most important open problems in the field. Previo... Read More about Improving and still passing the ALife test: Component-normalised activity statistics classify evolution in Geb as unbounded.

Passing the ALife test: activity statistics classify evolution in Geb as unbounded (2001)
Book Chapter
Channon. (2001). Passing the ALife test: activity statistics classify evolution in Geb as unbounded. In Advances in Artificial Life (417 - 426)

Bedau and Packard’s evolutionary activity statistics [1, 2] are used to classify the evolutionary dynamics in Geb [3, 4], a system designed to verify and extend theories behind the generation of evolutionary emergent systems. The result is that, acco... Read More about Passing the ALife test: activity statistics classify evolution in Geb as unbounded.

Towards the evolutionary emergence of increasingly complex advantageous behaviours (2000)
Journal Article
Channon. (2000). Towards the evolutionary emergence of increasingly complex advantageous behaviours. International Journal of Systems Science, 843 -860. https://doi.org/10.1080/002077200406570

The generation of complex entities with advantageous behaviours beyond our manual design capability requires long-term incremental evolution with continuing emergence. In this paper, we argue that artificial selection models, such as traditional gene... Read More about Towards the evolutionary emergence of increasingly complex advantageous behaviours.