Measurcs of Performance: In the ESDS, it is important to determine whether the em- ployed approach is heading a correct direc- tion. Measures of performance should be set for evaluating the effectiveness of some activities and the values of some relevant entities and their relationships in the ESDS. A good use of the measure of performance would be able to help us to cope with the ever changing situation in most real life problems.
The methodology for establishing the ESDS comprises six stages as shown in Figure 2. Stages 1, 4, 5 and 6 are concerned with real world situ- ation, and stages 2 and 3 are related to the con- ceptual world. Stage 1 intends to understand the situation by describing the present problem which currently has not been attempted by a knowledge based system. In stage 2, the ESDS will be defined with respect to the central issue of the problem situation. We may look ahead into stages 4 and 5 to polish the definition such that it can help to reveal problems within the ESDS. Generally speaking, the ESDS aims at building expert system through knowledge en- gineering. This can be considered as a trans- formation process. Stage 3 aims at construct- ing a conceptual model which consists of a min- imum number of necessary activities for achiev- ing the transformation described by the ESDS. To determine the practicality of the conceptual
a3
model, it is compared with the real life situ- ation or existing approach in stage 4. These changes may cause re-arrangement in the struc- ture and procedures of the ESDS. Stage 6 rep- resents the actual implementation phase of the expert system based on the agreed conceptual model. This methodology forms a cycle which allows improvement to be made on the ESDS.
Measurcs of Performance: In the ESDS, it is important to determine whether the em- ployed approach is heading a correct direc- tion. Measures of performance should be set for evaluating the effectiveness of some activities and the values of some relevant entities and their relationships in the ESDS. A good use of the measure of performance would be able to help us to cope with the ever changing situation in most real life problems. The methodology for establishing the ESDS comprises six stages as shown in Figure 2. Stages 1, 4, 5 and 6 are concerned with real world situ- ation, and stages 2 and 3 are related to the con- ceptual world. Stage 1 intends to understand the situation by describing the present problem which currently has not been attempted by a knowledge based system. In stage 2, the ESDS will be defined with respect to the central issue of the problem situation. We may look ahead into stages 4 and 5 to polish the definition such that it can help to reveal problems within the ESDS. Generally speaking, the ESDS aims at building expert system through knowledge en- gineering. This can be considered as a trans- formation process. Stage 3 aims at construct- ing a conceptual model which consists of a min- imum number of necessary activities for achiev- ing the transformation described by the ESDS. To determine the practicality of the conceptual a3 รูปแบบ มีการเปรียบเทียบกับชีวิตจริงซิ-ation หรือวิธีการที่มีอยู่ในระยะที่ 4 เปลี่ยนแปลงเหล่านี้อาจทำให้จัดเรียงใหม่ใน struc ture และขั้นตอนของการ ESDS ตัวแทนระยะ 6 - resents ระยะใช้งานจริงของระบบผู้เชี่ยวชาญแบบจำลองแนวคิดที่ตกลงกัน วิธีนี้ใช้วงจรที่ปรับปรุงจะทำบน ESDS
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