Showing all 12 Tech Reports linked to Zdenek Zdrahal

Concept learning - investigating the possibilities for a human-machine dialogue

Everyone around us learns. As a flower needs to adapt to the light, an animal to its environment, we people need to adjust to our complex social or personal conditions of life. Because of that we definitely learn during our entirely life. So, we could say that is better to start learning anytime. We could say that learning process is one of the most important parts of our existence. For examples teenagers are more likely to be receptive to the learning environment than older people. Then, what...read more

ID: kmi-09-01

Date: 2009

Author(s): Gabriela Pavel, Zdenek Zdrahal, Paul Mulholland

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A Generic Library of Problem Solving Methods for Scheduling Applications

In this report we propose a generic library of problem-solving methods for solving scheduling applications. Some attempts have been made in the past at developing a library scheduling problem-solvers but in some cases these earlier proposals subscribe to a specific application domain of scheduling, which restricted their reusability, while in some other cases they subscribe to the specific problem-solving technique which may be applicable only to a subset of the space of scheduling problems....read more

ID: kmi-05-11

Date: 2005

Author(s): Dnyanesh Rajpathak, Enrico Motta, Zdenek Zdrahal, and Rajkumar Roy

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Towards a Logical Framework for Sequential Design

Engineering design is usually seen as a knowledge-intensive process that driven by certain objectives eventually delivers an artefact having the desired properties or functions. Design is inherently iterative and the design goals evolve together with the solutions. Many current design theories present more or less efficient ways for finding a suitable solution to the given goals. However, they often leave open the question of the 'solution talkback'. Under 'solution talkback' we understand the...read more

ID: kmi-01-10

Date: 2001

Author(s): Martin Dzbor and Zdenek Zdrahal

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Towards a Framework for Acquisition of Design Knowledge

Engineering design is a knowledge-intensive process driven by various design objectives. Design is an iterative process where the objectives evolve together with the solutions in order to deliver an artefact with the desired properties and functions. Many design theories developed so far suggest more or less efficient ways for finding a suitable solution to the given goals. However, they often leave open the issue of 'solution talk-back'. Discovery of new design objectives and amendment of the...read more

ID: kmi-01-09

Date: 2001

Author(s): Martin Dzbor and Zdenek Zdrahal

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Date: 1998

Author(s): Zdenek Zdrahal and John Domingue

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Enriching Representations of Work to Support Organisational Learning

The ENRICH project will develop tools and methodologies supporting organisational learning addressing three core business needs: * Supporting individuals and groups to continuously reflect on and improve work practices. * Supporting distributed groups to share 'best practices' and improve their coordination efforts. * Promoting the establishment of 'virtual centres of excellence' that serve to identify core competencies and nurture their development by bringing people together (across...read more

ID: kmi-98-01

Date: 1998

Author(s): Tamara Sumner, John Domingue and Zdenek Zdrahal

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The World Wide Design Lab: An Environment for Distributed Collaborative Design

In ever increasing frequency, designers are required to collaborate across large geographical boundaries. This collaboration presents the participants with new challenges. In this paper we describe how we have addressed two of these challenges using Internet technology. The first challenge is "How can designers discuss complex design artifacts at a distance?". Designers' discussions have a complex structure. For example, a designer can refute, justify, or revise a design proposal. These...read more

ID: kmi-97-08

Date: 1997

Author(s): Zdenek Zdrahal and John Domingue

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Improving Competence by Integrating Case-Based Reasoning and Heuristic Search

We analyse the behaviour of a Propose & Revise architecture in the VT elevator design problem and we show that this problem solving method cannot solve all possible cases covered by the available domain knowledge. We investigate this problem and we show that this limitation is caused by the restricted search regime employed by the method and that the competence of the method cannot be improved by acquiring additional domain knowledge. We therefore propose an alternative design problem solver,...read more

ID: kmi-96-06

Date: 1996

Author(s): Zdenek Zdrahal and Enrico Motta

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Parametric Design Problem Solving

The aim of this paper is to understand what is involved in parametric design problem solving. In order to achieve this goal, in this paper i) we identify and detail the conceptual elements defining a parametric design task specification; ii) we illustrate how these elements are interpreted and operationalised during the design process; and iii) we formulate a generic model of parametric design problem solving. We then re-describe a number of problem solving methods in terms of the proposed...read more

ID: kmi-96-05

Date: 1996

Author(s): Enrico Motta and Zdenek Zdrahal

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Solving VT in VITAL: A Study in Model Construction and Knowledge Reuse

In this paper we discuss a solution to the Sisyphus II elevator design problem developed using the VITAL approach to structured knowledge-based system development. In particular we illustrate in detail the process by which an initial model of Propose&Revise problem solving was constructed using a generative grammar of model fragments and then refined and operationalised in the VITAL operational conceptual modelling language (OCML). In the paper we also discuss in detail the properties of a...read more

ID: kmi-95-09

Date: 1995

Author(s): Enrico Motta, *Kieron O'Hara, *Nigel Shadbolt, Arthur Stutt and Zdenek Zdrahal

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Multiple Agent Systems for Configuration Design

This paper investigates how the task of configuration design can be carried out using concepts of multiple agency. Configuration design is the task of selecting components from a predefined set to complete a system which meets a given functional specification and other design constraints. It is a class of task which is conventionally solved using a single agent reflecting an arbitrary balance of the design criteria chosen by the system designer. To study the efficacy of the multiple agent...read more

ID: kmi-95-05

Date: 1995

Author(s): Stuart Watt, Zdenek Zdrahal and Mike Brayshaw

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The Trouble with What: Issues in method-independent task specifications

In this paper we discuss some issues concerning the organization of knowledge for reuse and we critically examine the ideas of knowledge separation and minimal ontological commitments.. Because knowledge structures can play multiple roles in a domain, it is not necessarily the case that search-control knowledge can be neatly separated from a domain ontology. This is particularly the case when only procedural descriptions of a task are available. Because expert knowledge is often `messy', clean...read more

ID: kmi-95-02

Date: 1995

Author(s): Enrico Motta and Zdenek Zdrahal

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WE ACCEPT APPLICATIONS FROM CITIZENS GLOBALLY The Knowledge Media Institute (KMi) is a distinct research unit within the Faculty of Science, Technology, Engineering and Mathematics (STEM) at the Open University. KMi is looking for a Research Assistant or a Research Associate to work on the OU ANALYSE project (http://analyse.kmi.open.ac.uk). The aim of the project is to increase the retention rate at the OU and at the same time to improve the quality of education. Internet technologies...

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