Ebook: Qualitative Process Theory Using Linguistic Variables
Author: Bruce D’Ambrosio (auth.)
- Tags: Artificial Intelligence (incl. Robotics), Language Translation and Linguistics
- Series: Symbolic Computation
- Year: 1989
- Publisher: Springer-Verlag New York
- Edition: 1
- Language: English
- pdf
8. 5 Summary In this chapter we have identified three basic patterns of influences that lead to ambiguity in the QP analysis of the basic active furnace state. We have then shown how modification of these patterns, by adding equilibrium values and sensitivity annotations on influence arcs, could permit resolu tion of the ambiguities. Finally, we have described in detail the extensions needed to the basic influence resolution algorithm in QP theory to oper ate on these extended descriptions. We have also shown that the modified influence resolution algorithm corrects an error in Forbus' original method for combining influences. We have then presented an extended example in which introduction of equilibrium assumptions eliminates all ambigu ity in the influence resolution deduction. In the next chapter we extend these techniques further, by developing a qualitative perturbation analysis technique that permits us to answer "what ir' control questions; then we extend this technique to obtain quantitative, as well as qualitative, effects of hypothetical control actions. 8.
Content:
Front Matter....Pages i-x
Overview....Pages 1-4
Fuzzy Logic Control....Pages 5-15
Introduction to Qualitative Process Theory....Pages 16-30
Application of QP Theory to Process Control - An Example....Pages 31-43
Ambiguity in QP Theory....Pages 44-55
Linguistic Variables....Pages 56-81
Linguistic Quantity Spaces....Pages 82-95
Characterization of Functional Relationships....Pages 96-119
Qualitative Perturbation Analysis....Pages 120-141
Evaluation and Conclusion....Pages 142-153
Back Matter....Pages 154-156
Content:
Front Matter....Pages i-x
Overview....Pages 1-4
Fuzzy Logic Control....Pages 5-15
Introduction to Qualitative Process Theory....Pages 16-30
Application of QP Theory to Process Control - An Example....Pages 31-43
Ambiguity in QP Theory....Pages 44-55
Linguistic Variables....Pages 56-81
Linguistic Quantity Spaces....Pages 82-95
Characterization of Functional Relationships....Pages 96-119
Qualitative Perturbation Analysis....Pages 120-141
Evaluation and Conclusion....Pages 142-153
Back Matter....Pages 154-156
....