ENGLISH

Qualitative Process Theory Using Linguistic Variables

By Bruce D’Ambrosio (auth.)

Book information

Publisher
Springer-Verlag New York
Year
1989
ISBN
978-1-4613-9673-4, 978-1-4613-9671-0
DOI
10.1007/978-1-4613-9671-0
Language
english
Format
PDF
Filesize
5 MB (4719135 bytes)
Series
Symbolic Computation
Edition
1
Pages
156\165
Orientation
yes
Scanned
yes
Time added
2013-08-01 04:00:00
Artificial Intelligence (incl. Robotics); Language

Description

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.

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