Fuzzy-boolean multi-stage inference apparatus

Details Fuzzy-boolean multi-stage inference apparatus Fuzzy-boolean multi-stage inference apparatus

1990-03-29

1993-03-02

MacDonald, Allen R.

395900, 395 11, 395 61, 395 54, G06F 944, G05B 1302

Patent

active

051916380

ABSTRACT:
An inference conducted by use of fuzzy knowledge can be directly written in inference rules. It is possible to use ambiguous language expressions and freely describe flexible knowledge, although ambiguous, in a knowledge base. The user specifies execution priority orders or conviction degrees of inference rules such that even when an antecedent contains a confirmative or determinant action, a contention between rules is prevented. An intermediate results of a fuzzy inference is passed in a form of a real number or a fuzzy label to the next inference to achieve a fuzzy multi-stage inference. A multi-stage inference conducting a backtrack operation based on fuzzy knowledge is implemented to reflect a user's ambiguous knowledge. An inference method associated with a best value retrieval function is provided, in contrast to the conventional method in which a fuzzy inference and a binary logic inference are continuously achieved from an upper-level retrieval or search point to a lower-level retrieval point in a one-directional manner.

REFERENCES:
patent: 4777585 (1988-10-01), Kokawa et al.

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