Papers by Keyword: Polychromatic Graph

Abstract: To establish the configuration relations of complex product in the process of customization into supply chain, a new method of product configuration based on polychromatic graph theory was put forward. Then the optimum product structure configuration mathematical model was got and the improved ant colony algorithm was employed to solve the problem. The results showed that the solution quality got by improved ant colony algorithm was better than the solution got by traditional ant colony algorithm, and the product configuration model can exactly present the configuration information, product attribute and assembly relation for complex product. The customization system offers a kind of new way to meet customers’ requirements that the customers are eager for consumption of varieties, small batch production, short cycle and high quality.

Abstract: Through analysis of the current version of relationship models, the paper presents the short points of them and develops a new PDM multi-version management model based on the theory of polychromatic sets with the concept and method of the theory introduced. This new PDM multi-version management model uses the element of polychromatic sets to represent the version of a document, a uniform color to represent the integrated attribute of object, and individual color to represent the property information of an object version respectively. Considering adjacent versions have too many identical contents, this new model introduces a method on difference information to reduce the storage space of multi-versions. Finally, the arithmetic operators of the version management model of PDM were presented through a related case.

Abstract: This paper presents a new model of multi-discipline knowledge reasoning for collaborative design. The main contributions of this study can be focused on three points: The first is to clarify the concepts and contents of the polychromatic sets and polychromatic graph. The second is to put forward the knowledge reasoning model for multi-discipline knowledge based on polychromatic sets. Finally, the mathematical solutions for contour matrix, the causal relationship between the adjacent and the same knowledge patterns are given.