Information Technology Reference
In-Depth Information
Fig. 1. Structure of a system
2.2 Design process
The process of analysis and design the components of the systems consists of the following
stages.
Stage 1:
Determine the knowledge domain and scope; then do collecting real knowledge
consisting of data, concepts and objects, relations, operators and functions, facts and rules,
etc. The knowledge can be classified according to some ways such as chapters, topics or
subjects; and this classification help us to collect problems appropriately and easily.
Problems are also classified by some methods such as frame-based problems, general forms
of problems.
Stage 2:
Knowledge representation or modeling for knowledge to obtain knowledge base
model of the system. This is an important base for designing the knowledge base. Classes of
problem are also modeled as well to obtain initial problem models.
The above stages can be done by using the COKB model, Com-Nets, CO-Nets, and their
extensions. These models will be presented in section 3.
Stage 3:
Establishing knowledge base organization for the system based on COKB model
and its specification language. Knowledge base can be organized by structured text files.
They include the files below.
Files stores names of concepts, and structures of concepts.
A file stores information of the Hasse diagram representing the component H of COKB
model.
Files store the specification of relations (the component R of COKB model).
Files store the specification of operators (the component Ops of COKB model).
Files store the specification of functions (the component Funcs of COKB model).
A file stores the definition of kinds of facts.
A file stores deductive rules.
Files store certain objects and facts.
