FUZZY KNOWLEDGE ACQUIREMENT IN GATE DESIGN

In order to reduce time and cost in engineering design, such as gate design, integral field knowledge must be obtained efficiently. After studying ID3 and its improved methods, a new algorithm(Fuzzy ID3 ) and its main concepts are presented to overcome some disadvantage in classical ID3 algorithms. In its application of gate design, fuzzy knowledge gotten by the new algorithm is more efficient than the knowledge by other ID3 algorithms, the set of fuzzy knowledge is much smaller than that of knowledge by classical ID3 algorithms. On the other hand, fuzzy knowledge represents field data more naturally to the way of bar thinking and more robust in tolerating imprecise, conflicting and missing information

PERFORMANCE-BASED INTELLIGENT RESOURCE DESCRIPTION MODEL FOR INTERNET-BASED PRODUCT DESIGN

Issues on intelligent resource description and multiple intelligent resources integration for lntemet based collaborative design are analyzed. A performance-based intelligent resource description model for lnternet-based product design is proposed, which can help to create, store, manipulate and exchange intelligent resource description information for applications, tools and systems in Interact-based product design. A method to integrate multiple intelligent resources to fulfill a complex product design and analysis via lntemet is also proposed. A real project for improving the bearing system design of a turbo-expander with many intelligent resources in prominent universities is presented as a case study.

Distributed Integrated Information System for Product Design

A new approach to construct Distributed Integrated Information System for product design(DIIS) is presented. Design knowledge of parts and products is expressed in STEP form, it is neutral and independent to commercial CAD platforms. After compiling by STEP Developer and being pre/post processed, the binary codes of data dictionary model can be sent into the end user's design platform directly and readily supports the product design.

Chinese Philosophical Epistemology and Its Defects

The“University”proposes the proposition of“investigating things to acquire knowledge”,presenting the rudimentary form of Chinese philosophical epistemology.Over the following 2,500 years,it has undergone numerous debates on the relationship between knowledge and action;however,no philosopher has developed a comprehensive epistemological system that explores the nature,source,formation,application,truth,testing,structure of human knowledge,as well as the relationship between language and thinking.The concept of“know”in the philosophy of“investigating things to attain knowledge”is equivalent to concepts such as“idea”and“meaning”in Western philosophy.However,the cognitive state of“know”has not been fully explored and expanded upon,nor has the distinction between empirical and rational recognition of“know”been made.Confucianism advocated the“learning”of language communication as one of the ways to acquire knowledge,but it failed to evolve a method of using language to conduct formal logical reasoning to acquire knowledge and test truth.The“eight trigrams”deduction and yin-yang and five elements theory in the“I Ching”have stifled the emergence of modern scientific epistemological methods in China in terms of thinking mode.Confucian epistemology:focuses on“reason”and interpersonal relationships,with an emphasis on the establishment of moral ethics and social order.Taoist epistemology:pursues a realm beyond experience and social conventions,understanding the world through introspection and insight;it focuses on grasping“Tao”,providing vague guidance for determining universal truths and acquiring precise knowledge;it is prone to falling into the dilemma of nihilism and relativism.The concept of unity between heaven and man and unity between knowledge and action has led to the lack of differentiation in Chinese philosophical epistemology regarding the study of the relationship between subject and object,not involving the way in which the subject understands the object,the limitations of understanding,and the interaction between subject and object in the process of understanding.