Fuzzy decision diagrams for the representation, analysis, and optimization of rule bases
Open access
Date
1999-09Type
- Report
ETH Bibliography
yes
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Abstract
When no expert knowledge is available, fuzzy if-then rules may be extracted from examples of performance of a system. For this, an a priori decision on the number of linguistic terms of the linguistic variables may be required. This may induce a "rigid granularity", usually finer than that actually required by the system. Fuzzy decision diagrams (FuDDs) are introduced as an efficient data structure to represent fuzzy rule bases and to systematically check their completeness and consistency. Moreover if the hypothesis of rigid granularity holds, reordering of the variables of a fuzzy decision diagram may lead to a compacter and more precise rule base. The concept of reconvergent subgraphs is introduced to support the search for effective reorderings. Show more
Permanent link
https://doi.org/10.3929/ethz-a-004287248Publication status
publishedJournal / series
TIK ReportVolume
Publisher
ETH Zurich, Computer Engineering and Networks LaboratoryOrganisational unit
02640 - Inst. f. Technische Informatik und Komm. / Computer Eng. and Networks Lab.
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ETH Bibliography
yes
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