Constraint Propagation Using an Active Semantic Network

Roller, Dieter; Eck, Oliver

doi:10.1007/978-3-642-58898-3_3

Cited by 4 publications

(5 citation statements)

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“…This section presents an approach to constraint management using Knowledge-based support of rapid product development ECA rules of active databases. This approach is presented in more detail in Roller and Eck (1997). Earlier sections present the first mechanisms to represent constraints in an object-oriented data model and similarly, approaches to constraint evaluation and integrity recovery are presented that use ECA rules of active DBMSs.…”

Section: Constraints Managementmentioning

confidence: 99%

“…in form of parametric form features in solid modelling systems). Figure 6 shows an example of geometric dependencies between different product components (Roller and Eck 1997). But also, dependencies between different components of a product or between the requirements of a product and its properties can be modelled as constraints and can be used to make the design process more efficient.…”

Section: Constraints Managementmentioning

confidence: 99%

“…While in figure 6 an example of geometric constraints between form features and related parts is given (Roller and Eck 1997), figure 7 shows a very simple constraint example that is being used in this section to clarify the fundamental methods of constraint techniques using ECA rules. In this figure, a right-angled isosceles triangle with a corresponding constraint on its sides is presented.…”

Section: Constraint Representationmentioning

confidence: 99%

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Knowledge-based support of rapid product development

Roller

Eck

Dalakakis

2004

Journal of Engineering Design

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The benefits of Rapid Prototyping technologies can be applied efficiently only when they are embedded in an entire product development process. Rapid Product Development (RPD)-an iterative process involving manufacturing and evaluation of rapid prototypes-is mostly characterized by decentralized design teams cooperating on a high degree of process parallelism. In practice, RPD processes often lack mechanisms to combine design results of different designers, and, therefore, information management and the integration of interdisciplinary knowledge are some of the most central problems in the RPD process. An approach for supporting the entire RPD process consists of providing designers with a common knowledge base that represents all information relevant in RPD. Such a knowledge base helps to establish a common understanding and support the communication and cooperation of design teams. A requirement analysis of engineering databases shows that conventional database concepts do not support the required functionality of this application domain sufficiently. Here, advanced database features, such as an advanced transaction concept or active modelling primitives representing the semantics of product data, are needed. This paper presents a knowledge database called the Active Semantic Network. The Active Semantic Network has been developed to face the special tasks of designers working in RPD processes.

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Section: Constraints Managementmentioning

confidence: 99%

Section: Constraints Managementmentioning

confidence: 99%

Section: Constraint Representationmentioning

confidence: 99%

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Knowledge-based support of rapid product development

Roller

Eck

Dalakakis

2004

Journal of Engineering Design

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“…Group-oriented mechanisms are integrated to allow cooperative accesses to shared database objects. The ASN allows users to model constraints between data objects of different designers by dependency graphs (Roller, 1997B). Additional to an automatic propagation of constraint values, an automatic user notification is provided to inform designers about updates of other designers that are relevant for their work.…”

Section: Active Semantic Networkmentioning

confidence: 99%

An Integrated Software Architecture for Rapid Product Development Processes

Eck

Nogge²,

Rantzau

et al. 1998

Globalization of Manufacturing in the Digital Communications Era of the 21st Century

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In the complex process of product development, the ongoing distribution of processes and globalization of markets force companies to implement means of cooperation between partners at remote sites and coordination of tasks. In this paper we describe a distributed software architecture which provides an integrated set of tools for a wide range of Rapid Product Development processes. The centrat component is an active knowledge base called ASN (Active Semantic Network) which is used as shared data repository and team process coordination and upon which the other components of the system operate. The seenarios described are coming from the car manufacturing area ranging from collaborative development

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“…The product database divides into three object-oriented databases (OOD), i.e., design, manufacturing, and process planning databases. The active OOD allows users to specify actions to be taken automatically by agents given certain rules when certain conditions arise (Roller and Eck, 1998). In the following subsection, the concept of multiagent system is discussed.…”

Section: Page 8 Of 33mentioning

confidence: 99%

Multiagent Based Product Data Communication System for Computer Supported Collaborative Design

Ane

Roller

Abraham³

Integrated Information and Computing Systems for Natural, Spatial, and Social Sciences

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Today, designers and engineers on collaborative design environments often work in parallel and independently using different tools distributed at separate locations. Due to unique characteristic of engineering design, interaction during product development is difficult to maintain. As the information and communication technologies advance, computer supported collaborative design (CSCD) becomes more promising. Nevertheless, a potential problem remains between the product design and manufacturing, which primarily lies on the geometric shape of products that exists inherent in masscustomization. Meanwhile, each CAD/CAM technology has ist own authoring tools, which govern the use of independent language and format for expressing various features and geometry. This condition creates incompatibility and has significant impact to the product costs. This chapter is to address the incompatibility problem by introducing the architecture of a multiagent-based product data communication system. The developed system is adaptive and has a capability for autonomous tracking of design changes. The tracking model is able to support forward and backward tracking of constraint violation during the collaborative design transactions.

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Constraint Propagation Using an Active Semantic Network

Cited by 4 publications

References 1 publication

Knowledge-based support of rapid product development

Knowledge-based support of rapid product development

An Integrated Software Architecture for Rapid Product Development Processes

Multiagent Based Product Data Communication System for Computer Supported Collaborative Design

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