Invited Paper:

# Fuzzy Inference: Its Past and Prospects

## Kiyohiko Uehara^{*} and Kaoru Hirota^{**}

^{*}Ibaraki University

Hitachi 316-8511, Japan

^{**}Beijing Institute of Technology

Beijing 100081, China

Fuzzy inference in the past and its future prospects are described to further promote research in the field: First, the basic methods of fuzzy inference are introduced. Then, the progress of fuzzy inference is reviewed, showing its remarkable achievements, especially in industries. A consideration of fuzzy inference is presented from operational viewpoints. It provides a key to creating fuzzy-inference methods in the future. The growing research area of fuzzy inference is also introduced in order to discuss a current direction, reflecting the consideration mentioned above. Moreover, some future prospects on fuzzy inference are presented, which are expected to stimulate research.

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