Figure 2 Blackboard architecture of the current KBS.
Related Figures (8)
Fig. 1. Schematic view of a KBS. Part of sample table showing ultimate moment capacity and unit cost of section (for concrete slab thickness 200—225 mm, grade 40/20 concrete, high yiel¢ reinforcement, concrete cover 40mm, unit cost of concrete $50/m>, unit cost of reinforcement $3000/tonne) Fig. 3. Structure of visual studio components. Objects are used to encapsulate knowledge structure, procedures, and values. An object’s structure is defined by The input data provided by the user will be rejected if it is not within the range specified. It can explain its line of reasoning for obtaining an answer. It provides in multi- window graphics text display where graphic images are combined with valuable textual information. This kind of Fig. 5. Screen showing structural specification in preliminary design. The system offers a friendly user interface. Mouse, keyboard, or both can be used to navigate the application. The use of a mouse or other pointing device makes the data entry a simple task even for novice computer users. As such, users simply point and click their way through the process to intelligent graphics is extremely valuable to structural designers because it enhances their confidence in the design provided by the KBS. The inference engines control the strategies that deter- mine how, from where, and in what order a knowledge base draws its conclusions. These inference strategies model the reasoning processes an expert uses when solving a problem. The Process Control Knowledge module involves metalevel knowledge, which establishes the problem solving strategy and controls the execution of the In order to demonstrate how LIQUID assist engineer in the preliminary design of liquid retaining structure, a sample Fig. 7. Screen showing sectional properties allowing changes to design parameters. Fig. 6. Screen showing 15 alternative sections with unit cost. Fig. 8. Screen showing crack width checking in accordance to BS 8007.
