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Browsing by Author "Adams, R.G."
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Adaptive Electrical Signal Post-Processing in Optical Communication Systems
Sun, Yi.; Shafarenko, A.; Adams, R.G.; Davey, N.; Slater, B.; Bhamber, R.; Boscolo, S.; Turitsyn, S.K. (INSTICC (Inst. Syst. Technologies Information Control and Communication), 2008)Improving bit error rates in optical communication systems is a difficult and important problem. The error correction must take place at high speed and be extremely accurate. We show the feasibility of using hardware ... -
Adaptive Olfactory Encoding in Agents Controlled by Spiking Neural Networks
Oros, N.; Steuber, Volker; Davey, N.; Canamero, L.; Adams, R.G. (2008)We created a neural architecture that can use two different types of information encoding strategies depending on the environment. The goal of this research was to create a simulated agent that could react to two different ... -
Addressing Mechanisms for VLIW and Superscalar Processors
Steven, F.L.; Adams, R.G.; Steven, G.B.; Wang, L.; Whale, D. (1993)RISC processors employ simple addressing modes which allow memory addresses to be calculated in a single processor cycle. This paper demonstrates that VLIW and Superscalar processor performance can be improved by further ... -
Analysing Hierarchical Data Using a Stochastic Evolutionary Neural Tree
Adams, R.G.; Davey, N.; George, S. (1998)SCENT is simple competitive neural network model that evolves a tree structured set of nodes in response to being presented with an unlabelled data set. The resulting set of weight vectors and their relationship can be ... -
The analysis of animate object motion using neural networks and snakes
Tabb, Ken; George, S.; Davey, N.; Adams, R.G. (2000)This paper presents a mechanism for analysing the deformable shape of an object as it moves across the visual field. An object’s outline is detected using active contour models, and is then re-represented as shape, location ... -
Analysis of human motion using snakes and neural networks
Tabb, Ken; George, S.; Davey, N.; Adams, R.G. (2000)A novel technique is described for analysing human movement in outdoor scenes. Following initial detection of the humans using active contour models, the contours are then re-represented as normalised axis crossover vectors. ... -
The Analysis of the addition of Stochasticity to a Neural Tree Classifier
Pensuwon, W.; Adams, R.G.; Davey, N. (2001)This paper describes various mechanisms for adding stochasticity to a dynamic hierarchical neural clusterer. Such a network grows a tree-structured neural classifier dynamically in response to the unlabelled data with which ... -
The application of discriminant analysis and Machine Learning methods as tools to identify and classify compounds with potential as transdermal enhancers
Moss, Gary; Shah, A.J.; Adams, R.G.; Davey, N.; Sun, Y.; Wilkinson, S.C.; Pugh, W.J. (2012-01-23)Discriminant analysis (DA) has previously been shown to allow the proposal of simple guidelines for the classification of 73 chemical enhancers of percutaneous absorption. Pugh et al. employed DA to classify such enhancers ... -
The Architecture and Performance of a Stochastic Competitive Evolutionary Neural Tree Network
Davey, N.; Adams, R.G.; George, S. (2000)A new dynamic tree structured network - the Stochastic Competitive Evolutionary Neural Tree (SCENT) is introduced. The network is able to provide a hierarchical classification of unlabelled data sets. The main advantage ... -
Artificial evolution: modelling the development of the retina
Rust, A.G.; Adams, R.G.; George, S.; Bolouri, H. (University of Hertfordshire, 1996)The evolution of neural systems relies on the repeated modification of developmental programmes contained within genes. This paper proposes that to efficiently investigate artificial evolution, developmental processes must ... -
Associative Memories with Small World Connectivity
Davey, N.; Calcraft, L.; Christianson, B.; Adams, R.G. (Springer Nature, 2005)In this paper we report experiments designed to find the relationship between the different parameters of sparsely connected networks of perceptrons with small world connectivity patterns, acting as associative memories. -
Characterising the performance of balanced memory networks
Metaxas, A.; Maex, Reinoud; Adams, R.G.; Steuber, Volker; Davey, N. (2013)Poster presented at CNS 2013 -
Clustering predicts memory performance in networks of spiking and non-spiking neurons
Chen, W.; Maex, R.; Adams, R.G.; Steuber, Volker; Calcraft, L.; Davey, N. (2011)The problem we address in this paper is that of finding effective and parsimonious patterns of connectivity in sparse associative memories. This problem must be addressed in real neuronal systems, so that results in ... -
Combining experts in order to identify binding sites in genomic data
Rezwan, F.; Sun, Yi.; Robinson, M.; Adams, R.G.; Rust, A.G.; Davey, N. (2008)The identification of cis-regulatory binding sites in DNA is a difficult problem in computational biology. To obtain a full understanding of the complex machinery embodied in genetic regulatory networks it is necessary to ... -
Combining experts in order to identify binding sites in yeast and mouse genomic data
Robinson, M.; Gonzalez Castellano, C.; Rezwan, F.; Adams, R.G.; Davey, N.; Rust, A.G.; Sun, Yi. (2008)The identification of cis-regulatory binding sites in DNA is a difficult problem in computational biology. To obtain a full understanding of the complex machinery embodied in genetic regulatory networks it is necessary to ... -
Combining machine learning and simulations of a morphologically realistic model to study modulation of neuronal activity in cerebellar nuclei
Alva, Parimala; Kroos, Lieke; Eelkman Rooda, Oscar; De Zeeuw, Chris I.; Adams, R.G.; Davey, N.; Hoebeek, Freek E.; Steuber, Volker (2014-07-21)Epileptic absence seizures are characterized by synchronized oscillatory activity in the cerebral cortex that can be recorded as so-called spike-and-wave discharges (SWDs) by electroencephalogram. Although the cerebral ... -
Comparative performances of stochastic competitive evolutionary neural tree (SCENT) with neural classifiers
Pensuwon, W.; Adams, R.G.; Davey, N. (2001)A stochastic competitive evolutionary neural tree (SCENT) is described and evaluated against the best neural classifiers with equivalent functionality, using a collection of data sets chosen to provide a variety of clustering ... -
Comparing computational and human measures of visual similarity
Gale, T.M.; Sun, Yi.; Adams, R.G.; Davey, N. (World Scientific Publishing, 2005)There have been many attempts to quantify visual similarity within different categories of objects, with a view to using such measures to predict impaired recognition performance. Although many studies have linked measures ... -
Connection Strategies in Associative Memory Models
Chen, W.; Maex, R.; Adams, R.G.; Calcraft, L.; Steuber, Volker; Davey, N. (2009)The problem we address in this paper is that of finding effective and parsimonious patterns of connectivity in sparse associative memories. This problem must be addressed in real neuronal systems, so results in artificial ... -
Connection strategy and performance in sparsely connected 2D associative memory models with non-random images
Calcraft, L.; Adams, R.G.; Davey, N. (2009)A sparsely connected associative memory model is tested with different pattern sets, and it is found that pattern recall is highly dependent on the type of patterns used. Performance is also found to depend critically on ...