Computer Science (Scholarly Publications): Recent submissions
Now showing items 901-920 of 1420
-
Towards Understanding the Effects of Neutrality on the Sudoku Problem
(ACM Press, 2007)Over the last years, researchers have added neutrality in the evolutionary search in the hope that it can aid evolution. In this paper, we study the presence of neutrality that is already and to do so, we analised the ... -
How and Why a Bit-Wise Neutrality with and without Locality Affects Evolutionary Search
(ACM Press, 2007)Despite the vast work on neutrality, there are not general conclusions on its effects. In this paper we make an effort to understand how neutrality in uences evolution. For this purpose we will use a type of neutrality ... -
Towards Understanding the Effects of Locality in GP
(IEEE Press, 2009)Locality - how well neighbouring genotypes correspond to neighbouring phenotypes - has been defined as a key element in Evolutionary Computation systems to explore and exploit the search space. Locality has been studied ... -
Investigating Mapping Order in ðGE
(IEEE Press, 2010)We present an investigation into the genotypephenotype map in Position Independent Grammatical Evolution (?GE). Previous studies have shown ?GE to exhibit a performance increase over standard Grammatical Evolution ... -
Implementing an Intuitive Mutation Operator for Interactive Evolutionary 3D Design
(IEEE Press, 2010)Locality - how well neighbouring genotypes correspond to neighbouring phenotypes - has been described as a key element in Evolutionary Computation. Grammatical Evolution (GE) is a generative system as it uses grammar ... -
Tree-Adjunct Grammatical Evolution
(IEEE Press, 2010)In this paper we investigate the application of tree-adjunct grammars to grammatical evolution. The standard type of grammar used by grammatical evolution, context-free grammars, produce a subset of the languages that ... -
Comparing the Performance of the Evolvable PiGrammatical Evolution Genotype Phenotype Map to Grammatical Evolution in the Dynamic Ms. Pac-Man Environment
(IEEE Press, 2010)In this work, we examine the capabilities of two forms of mappings by means of Grammatical Evolution (GE) to successfully generate controllers by combining high-level functions in a dynamic environment. In this work we ... -
Defining Locality in Genetic Programming to Predict Performance
(IEEE Press, 2010)A key indicator of problem difficulty in evolutionary computation problems is the landscape?s locality, that is whether the genotype-phenotype mapping preserves neighbourhood. In genetic programming the genotype ... -
The Effects of Constant and Bit-Wise Neutrality on Problem Hardness, Fitness Distance Correlation and Phenotypic Mutation Rates.
(2011)Kimura?s neutral theory of evolution has inspired researchers from the evolutionary computation community to incorporate neutrality into Evolutionary Algorithms (EAs) in the hope that it can aid evolution. The effects of ... -
Choosing between Axioms, Rules and Queries: Experiments in Semantic Integration Techniques
(2011)When using semantic technologies developers are frequently confused about which specific inferencing technique is best to use for a given problem. As an initial step towards identifying "best practices" for users ... -
A Semantic Monitoring and Management Framework for End-to-end Services
(IEEE, 2011)Modern distributed applications and communication services have become increasingly complex, composed of diverse heterogeneous sub-systems, and it is progressively more unrealistic that the users of these systems will ... -
Formal polytypic programs and proofs
(2010)The aim of our work is to be able to do fully formal, machine-verified proofs over Generic Haskell-style polytypic programs. In order to achieve this goal, we embed polytypic programming in the proof assistant Coq and ... -
Supporting Learner Model Exchange in Educational Web Systems
(2011)The heterogeneity of learner models in structure, syntax and semantics makes sharing them a significant challenge for existing educational web systems. Creating mappings between the different types of learner models is one ... -
Code generation for hardware accelerated AES
(IEEE, 2010)Data must be encrypted if it is to remain confidential when sent over computer networks. Encryption solves many problems involving invasion of privacy, identity theft, fraud, and data theft. However for encryption to be ... -
Identifying requirements and features for communications systems between older people in care settings
(IEEE, 2010)Care settings for older people, such as nursing homes, can have low levels of social interaction, which has been shown in many studies as being crucial to both the mental and physical well-being of older adults. ... -
Membership service specifications for safety-critical geocast in vehicular networks.
(IEEE, 2010)Geographic group communication is a promising technique for collaborative driving applications. While oneway, geographic broadcast (geocast) is well-studied in vehicular networks, there has been little work to address ... -
An active approach to guaranteed arrival times based on traffic shaping.
(2010)To address the goal of providing drivers on highways with guaranteed arrival times, we propose a traffic management system that combines virtual slots with semiautonomous driving to shape traffic and prevent congestion. Two ... -
Soilse: A decentralized approach to optimization of fluctuating urban traffic using reinforcement learning
(2010)Increasing traffic congestion is a major problem in urban areas, which incurs heavy economic and environmental costs in both developing and developed countries. Efficient urban traffic control (UTC) can help reduce ... -
On Event-Based Middleware for Location-Aware Mobile Applications
(2010)As mobile applications become more widespread, programming paradigms and middleware architectures designed to support their development are becoming increasingly important. The event-based programming paradigm is a strong ... -
Cognitive Policy Learner: Biasing Winning or Losing Strategies
(2011)In continuous learning settings stochastic stable policies are often necessary to ensure that agents continuously adapt to dynamic environments. The choice of the decentralised learning system and the employed policy ...
