Design of a user interface for a knowledge refinement tool

Basden, Andrew; Brown, Alex; Tetlow, Stephen D. A.; Hibberd, Peter R.

doi:10.1006/ijhc.1996.0047

Cited by 9 publications

(6 citation statements)

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“…KB construction is no longer a linear sequential activity, but more of a cyclical, continuous process in which the KBS software must become 'proximally' (3) part of the knowledge engineer. The style of user interface is important, and has been discussed in (16). By generalising from the experience with Internet trust, this paper discusses other features that are important, such as visual representations, the variety of explanations needed or the ability to modify anything in the KB as soon as the participants think about it.…”

Section: Discussionmentioning

confidence: 99%

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Coping with Poorly Understood Domains: The Example of Internet Trust

Basden

Evans

Chadwick

et al. 1999

Research and Development in Expert Systems XV

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The notion of trust, as required for secure operations over the Internet, is important for ascertaining the source of received messages. How can we measure the degree of trust in authenticating the source? Knowledge in the domain is not established, so knowledge engineering becomes knowledge generation rather than mere acquisition. Special techniques are required, and special features of KBS software become more important than in conventional domains. This paper generalizes from experience with Internet trust to discuss some techniques and software features that are important for poorly understood domains.

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Section: Discussionmentioning

confidence: 99%

“…The importance of such 'visual cues' in Istar's user interface is one of the issues discussed in (16). Another is the mimimization of cognitive load and the avoidance of interruption of the knowledge engineer's thinking process by carefully 'grading' the load imposed by each operation.…”

Section: Visual Knowledge Representationmentioning

confidence: 99%

Coping with Poorly Understood Domains: The Example of Internet Trust

Basden

Evans

Chadwick

et al. 1999

Research and Development in Expert Systems XV

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“…The KBS software we adapted for use as a knowledge server was Istar , first developed during the INCA project (Basden, Brown, Tetlow and Hibberd, 1996) which aimed at intelligent authoring of construction contracts. Istar was designed as a flexible visual programming language, employing a 'language' of boxes (nodes) and arrows (arcs) with which the knowledge engineer draws knowledge as a graph rather than writing it as production rules or predicates.…”

Section: Overview Of Istarmentioning

confidence: 99%

Knowledge Issues Raised in Modelling Trust in a Public Key Infrastructure

2001

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The paper describes a knowledge based system (KBS) for modelling trust in the Certification Authority (CA) of a Public Key Infrastructure (PKI). It was built using a graphical KBS toolkit, Istar, that allows the knowledge builder to easily model the important relationships between concepts of the domain. The knowledge base was initially built using published work and was subsequently extended by knowledge obtained from leading PKI experts. The first prototype system computes the trust in a CA by asking the user a series of questions about the CA's Certification Practice Statement. Examples of its use with two well known public CAs is discussed.An important issue raised and discussed in this paper is how to map symbols in the KB to the knowledge level of human trust and beliefs, for such an ill-defined area of knowledge as trust, and four main mappings have been identified. Another issue that emerged relates to the use of questionnaires during knowledge acquisition. The expert system is currently available online via the Istar Knowledge Server, and future work is discussed.

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“…The tool is now at a distance from us mentally. This view has been applied to understanding two types of HCI [Basden, Brown, Tetlow and Hibberd, 1996]. In the first couple of decades the HCI relation was assumed to be distal, with a common metaphor for understanding it being dialogue between two agents (human and computer).…”

Section: Aspectual Subject-object Relationsmentioning

confidence: 99%

“…No undue muscle strain, RSI Sometimes there may be conflict between such aspectual norms. For example, the juridical norm of appropriateness can make it difficult to standardise the style of UI, as discussed by Basden, Brown, Tetlow and Hibberd [1996]. For example, on a web page, is graphic design more or less important than ability to find useful information?…”

Section: Bioticmentioning

confidence: 99%