The invention discloses a method for obtaining irregular knowledge used for constructing a mechanical
product design knowledge base. Aiming at the requirements for
knowledge processing and
knowledge base system development in the mechanical
product design field, the invention defines the irregular knowledge, discloses a computation module for dividing irregular knowledge
granularity by adopting
granularity calculation principle, studies mechanical
product design irregular
knowledge base structure system and basic format, discloses an irregular knowledge base display method based on
metadata, and invents a method for obtaining
semantic matching, irregular knowledge base in serial
data source, and multi-mode irregular knowledge based on irregular example knowledge obtaining of
cluster analysis; and on the basis, designs a
system frame and a prototype
software system for mechanical product
design knowledge base
system construction and application. The invention can be used to solve the technical problem of treating irregular knowledge in an
information processing system such as CAD (computer-aided design),
CAM (computer-aided manufacturing), CAE (computer-aided
engineering) or PDM (products
data management) in manufacturing industry, so as to satisfy the requirements for the deepening development of the manufacturing industry information project technology.