Outputs (51)

Describing and characterising visualisations. (1996)
Presentation / Conference Contribution
Kennedy, J. B., Mitchell, K. J., & Barclay, P. J. (1996). Describing and characterising visualisations. In 3rd FADIVA Workshop

A generic framework for describing and specifying interfaces to databases has been proposed [1]. Currently this
framework is being used as a model for the development of an environment for the construction of user interfaces to object oriented datab... Read More about Describing and characterising visualisations..

On temporal versioning in object oriented databases. (1996)
Journal Article
Lu, J., Barclay, P., & Kennedy, J. (1996). On temporal versioning in object oriented databases. Informationssystem-Architekturen, 3, 38-40

This paper describes the development of the data model TVM which contains a new concept, temporal versioning. This generalises the ideas of temporal databases and version management to object-oriented databases. TVM provides a new approach for data m... Read More about On temporal versioning in object oriented databases..

TOTEM: an Interactive Tool for Creative Data Modelling (1996)
Presentation / Conference Contribution
Crerar, A., Barclay, P. J., & Watt, R. (1996, July). TOTEM: an Interactive Tool for Creative Data Modelling. Presented at 3rd International Workshop on Interfaces to Databases, Napier University, Edinburgh

Data modelling is a crucial and early step in the design of all but the most trivial database systems. Although a fundamental skill for information systems designers, data modelling is not easy to do well and novices are known to have considerable di... Read More about TOTEM: an Interactive Tool for Creative Data Modelling.

Functional languages on linear chromosomes (1996)
Presentation / Conference Contribution
Holmes, P., & Barclay, P. J. (1996). Functional languages on linear chromosomes. In Proceedings of the 1st annual conference on genetic programming (427)

Ayala & Kiger (1984) document a biological phenomenon in which co-adapted genes migrate and naturally cluster together into structures called supergenes. We have begun research into the implications of the supergene effect on the efficiency of evolut... Read More about Functional languages on linear chromosomes.

A framework for user-interfaces to databases (1996)
Presentation / Conference Contribution
Mitchell, K., Kennedy, J., & Barclay, P. J. (1996, May). A framework for user-interfaces to databases. Presented at International Workshop on Advanced Visual Interfaces, AVI\'96

A framework for user-interfaces to databases (IDSs) is proposed which draws from existing research on human computer interaction (HCI) and database systems. The framework is described in terms of a classification of the characteristic components of a... Read More about A framework for user-interfaces to databases.

Interfaces to data models: taking a step backwards (1995)
Presentation / Conference Contribution
Barclay, P., Crerar, A., & Davidson, K. (1994, July). Interfaces to data models: taking a step backwards. Presented at Second International Workshop on Interfaces to Database Systems, Lancaster, UK

This paper is concerned with data modelling and the question of how to improve the quality of software tools to provide more effective support for the modeller. With the increasing interest in building intelligent interfaces to databases and associat... Read More about Interfaces to data models: taking a step backwards.

3D information visualisation: Identifying and measuring success (1995)
Presentation / Conference Contribution
Kennedy, J., Mitchell, K., Barclay, P., & Marshall, B. (1995). 3D information visualisation: Identifying and measuring success. In Proceedings of the 2nd International FADIVA Workshop, 1995

This paper presents some of our views on information visualisation and interfaces to databases with respect to the theme of the workshop.

Using a conceptual data language to describe a database and its interface (1995)
Presentation / Conference Contribution
Mitchell, K., Kennedy, J., & Barclay, P. J. (1995, July). Using a conceptual data language to describe a database and its interface. Presented at 13th British National Conference on Database - BNCOD13, 1995, University of Manchester

We propose a conceptual approach to defining interfaces to databases which uses the features of a fully object oriented data language to specify interface objects combined with database objects. This achieves a uniform, natural way of describing data... Read More about Using a conceptual data language to describe a database and its interface.

A conceptual language for querying object oriented data (1994)
Presentation / Conference Contribution
Barclay, P. J., & Kennedy, J. (1994, July). A conceptual language for querying object oriented data. Presented at 12th British National Conference on Database: Directions in Databases - BNCOD12, 1994

A variety of languages have been proposed for object oriented database systems in order to provide facilities for ad hoc querying. However, in order to model at the conceptual level, an object oriented schema definition language must itself provide f... Read More about A conceptual language for querying object oriented data.

Using a genetic algorithm for optimizing fixed polarity Reed-Muller expansions of boolean functions (1994)
Journal Article
Millert, J. F., Luchian, H., Bradbeeru, P. V. G., & Barclay, P. J. (1994). Using a genetic algorithm for optimizing fixed polarity Reed-Muller expansions of boolean functions. International Journal of Electronics, 76(4), 601-609. https://doi.org/10.1080/00207219408925956

The use of a genetic algorithm is presented which determines good sub-optimum fixed polarity Reed-Muller expansions of completely specified boolean functions. The algorithm performs better than previous techniques which find a good fixed polarity by... Read More about Using a genetic algorithm for optimizing fixed polarity Reed-Muller expansions of boolean functions.