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All Outputs (44)

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.

Using a persistent system to construct a customised interface to an ecological db. (1993)
Presentation / Conference Contribution
Barclay, P. J., Fraser, C., & Kennedy, J. (1992, July). Using a persistent system to construct a customised interface to an ecological db. Presented at 1st International workshop on Interfaces to Database

New applications of information technology have increasingly sophisticated user interface requirements. Such interfaces are sometimes highly application specific and therefore require to be customised to the given application area. Technology is requ... Read More about Using a persistent system to construct a customised interface to an ecological db..

Viewing objects. (1993)
Presentation / Conference Contribution
Barclay, P. J., & Kennedy, J. (1993). Viewing objects. In M. Worboys, & A. F. Grundy (Eds.), Advances in databases: Proceedings of the 11th British National Conference on Database Systems (93-110). https://doi.org/10.1007/3-540-56921-9_6

This paper examines the incorporation of database views into an object oriented conceptual model. An approach is presented where views are themselves objects, instances of view classes. These view objects provide new ways of interacting with preexist... Read More about Viewing objects..

Modelling ecological data. (1992)
Presentation / Conference Contribution
Barclay, P. J., & Kennedy, J. (1992). Modelling ecological data. In H. Hinterberger, & J. C. French (Eds.), Proceedings of the Sixth International Working Conference on Scientific and Statistical Database Management (77-93)

Ecological surveys generate large quantities of data; database technology has not yet reached its full
potential in this area. Here we investigate approaches to modelling ecological data, considering the require-
ments for a successful model. An ob... Read More about Modelling ecological data..

Semantic integrity for persistent objects (1992)
Journal Article
Barclay, P. J., & Kennedy, J. (1992). Semantic integrity for persistent objects. Information and Software Technology, 34(8), 533-541. https://doi.org/10.1016/0950-5849%2892%2990147-H

Modelling constructs for specifying semantic integrity are reviewed, and their implicit execution semantics discussed. An integrity maintenance model based on these constructs is presented. An implementation of this model in a persistent programming... Read More about Semantic integrity for persistent objects.

Regaining the conceptual level in object oriented modelling (1991)
Presentation / Conference Contribution
Barclay, P. J., & Kennedy, J. (1991). Regaining the conceptual level in object oriented modelling. In Proceedings of the 9th British National Conference on Databases, Aspects of Databases, (BNCOD 9) (269-305)

This paper attempts to develop a conceptual model for the object oriented description of data. We abstract from various logical model features essential for thinking about data in an object oriented framework. These features are presented through exa... Read More about Regaining the conceptual level in object oriented modelling.

Database support for taxonomy
Report
Raguenaud, C., Kennedy, J., & Barclay, P. J. (1999). Database support for taxonomy. Napier University

Taxonomists classify the organisms they study in order to refer to, identify and understand them. However, the same organism may at times be classified according to different taxonomic opinions and subsequently have several alternative names or be pl... Read More about Database support for taxonomy.

The Prometheus Database Model
Report
Raguenaud, C., Kennedy, J., & Barclay, P. The Prometheus Database Model. Napier University

This report presents the Prometheus database model. The model is designed to satisfy the requirements expressed in a previous document [RKB99]. The new model is based on a graph model and is extended with some mechanisms existing in other models (e.g... Read More about The Prometheus Database Model.

Query Language For Prometheus
Report
Raguenaud, C., Kennedy, J., & Barclay, P. J. Query Language For Prometheus. Napier University

This document presents the query language developed for the Prometheus database [RKB99]. This language is based on graphs and provides the user with a means to define the data to be extracted from the database and its manipulation. The language requi... Read More about Query Language For Prometheus.

Using a metadata software layer in information systems integration.
Presentation / Conference Contribution
Roantree, M., Kennedy, J., & Barclay, P. J. (2001, June). Using a metadata software layer in information systems integration. Presented at CAiSE'01 - Software Engineering meets Information Systems Engineering. Conference, Interlaken, Switzerland

A federated information system requires that multiple (often heterogenous) information systems are integrated to an extent that they can share data. This shared data often takes the form of a federated schema, which is a global view of data taken fro... Read More about Using a metadata software layer in information systems integration..

Integrating View Schemata Using an Extended Object Definition Language
Presentation / Conference Contribution
Roantree, M., Kennedy, J. B., & Barclay, P. J. (2001, September). Integrating View Schemata Using an Extended Object Definition Language. Presented at 9th International Conference, CoopIS 2001, Trento, Italy

View mechanisms play an important role in restructuring data for users, while maintaining the integrity and autonomy for the underlying database schema. Although far more complex than their relational counterparts, numerous object-oriented view mecha... Read More about Integrating View Schemata Using an Extended Object Definition Language.

Conceptual Modelling for Database User Interfaces
Presentation / Conference Contribution
Cooper, R., McKirdy, J., Griffiths, T., Barclay, P. J., Paton, N. W., Gray, P., Kennedy, J., & Goble, C. (2000, May). Conceptual Modelling for Database User Interfaces. Presented at Visual Database Systems - VDB5, 2000, Fukuoka, Japan

Model-based user interface development environments show promise for improving the speed of production and quality user interfaces. Such systems usually have seperate descriptions of domain, task and presentation to structure. The Teallach system app... Read More about Conceptual Modelling for Database User Interfaces.

Teallach: a model-based user interface development environment for object databases
Presentation / Conference Contribution
Griffiths, T., Barclay, P. J., McKirdy, J., Paton, N. W., Gray, P. D., Kennedy, J., Cooper, R., Goble, C. A., West, A., & Smyth, M. (1999, September). Teallach: a model-based user interface development environment for object databases. Presented at User Interfaces to Data Intensive Systems, 1999

Model-based user interface development environments show promise for improving the productivity of user interface developers, and possibly for improving the quality of developed interfaces. However, model-based techniques have rarely been applied to... Read More about Teallach: a model-based user interface development environment for object databases.

3D information visualisation: Identifying and measuring success
Presentation / Conference Contribution
Kennedy, J., Mitchell, K., Barclay, P., & Marshall, B. (1995, July). 3D information visualisation: Identifying and measuring success. Presented at 2nd FADIVA Workshop, 1995, University of Glasgow

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

Functional languages on linear chromosomes
Presentation / Conference Contribution
Holmes, P., & Barclay, P. J. (1996, July). Functional languages on linear chromosomes. Presented at Genetic Programming 1996, Stanford University

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.

Application of evolutionary algorithms to learning evolved Bayesian Network models of rig operations in the Gulf of Mexico
Presentation / Conference Contribution
Fournier, F. A., Wu, Y., McCall, J., Petrovski, A., & Barclay, P. J. (2010, September). Application of evolutionary algorithms to learning evolved Bayesian Network models of rig operations in the Gulf of Mexico. Presented at 2010 UK Workshop on Computational Intelligence (UKCI), Colchester, UK

The operation of drilling rigs is highly expensive. It is therefore important to be able to identify and analyse variables affecting rig operations. We investigate the use of Genetic Algorithms and Ant Colony Optimisation to induce a Bayesian Network... Read More about Application of evolutionary algorithms to learning evolved Bayesian Network models of rig operations in the Gulf of Mexico.