A universal translator of linguistic hedges for the handling of uncertainty and fitness-for-use in GIS

1997 ◽  
pp. 133-144
Keyword(s):  
Linguistic Hedges

scholarly journals Actuator saturation control of a benchmark structure using hedge-algebras-based fuzzy controller

2015 ◽  
Vol 37 (2) ◽  
pp. 91-104
Author(s):  
Bui Hai Le
Keyword(s):  
Fuzzy Controller ◽  
Actuator Saturation ◽  
Fuzzy Model ◽  
Linguistic Variable ◽  
Linguistic Terms ◽  
Earthquake Excitation ◽  
Saturation Control ◽  
Linguistic Hedges ◽  
Bracing System

In this paper, the problem of actuator saturation control of a benchmark structure using hedge-algebras-based fuzzy controller (HAC) is presented. In HAC, linguistic values of linguistic terms are obtained through semantically quantifying mappings (SQMs) based on few fuzziness parameters of each linguistic variable without using any fuzzy set and inherent order relationships between linguistic values of each linguistic variable are always ensured. Hence, the design of a HAC leads to determining parameters of SQMs, which are fuzziness measures of primary terms and linguistic hedges occurring in a fuzzy model. As a case study, a HAC is designed to actuator saturation control of a benchmark structure with active bracing system (ABS) subjected to earthquake excitation. Control performance of the controller is also discussed in order to show advantages of the proposed method.

Linguistic Hedges and Reasonable Fuzzy Inferences

1983 ◽  
Vol 16 (13) ◽  
pp. 243-248
Author(s):  
Y. Ezawa ◽  
M. Mizumoto
Keyword(s):  
Linguistic Hedges

scholarly journals Hedge Algebras: An Algebraic Approach to Domains of Linguistic Variables and Their Applicability

2017 ◽  
Vol 23 (1&2) ◽  
pp. 1
Author(s):  
Ho N.C. N.C.
Keyword(s):  
Inverted Pendulum ◽  
Algebraic Approach ◽  
Conditional Reasoning ◽  
Linguistic Variables ◽  
New Approach ◽  
Reasoning Problem ◽  
Fuzziness Measure ◽  
Linguistic Hedges

The paper is an overview on an algebraic approach to domains of linguistic variables and somefirst applications to show the applicability of this new approach. In this approach, each linguistic domain can be considered as a hedge algebra (HA for short) and based on the structure of HAs,a notion of fuzziness measure of linguistic hedges and terms can be defined. In order to apply hedge algebras to those problems, the results of which are needed, a notion of semantically quantifying mappings (SQMs) will be introduced. It shown that there is a closed connection between SQMs and fuzziness measure of hedge and primary terms (the generators of linguistic domains). To show the applicability of this approach, new met hods to solve a Fuzzy Multiple Conditional Reasoning problem, the problem of Balancing an Inverted Pendulum will be presented.

scholarly journals Novel, useful, and effective definitions for fuzzy linguistic hedges

2006 ◽  
Vol 2006 ◽  
pp. 1-13 ◽  
Author(s):  
Aarthi Chandramohan ◽  
M. V. C. Rao
Keyword(s):  
Point Of View ◽  
Membership Functions ◽  
Main Emphasis ◽  
Membership Value ◽  
Linguistic Hedges ◽  
Fuzzy Linguistic

The main emphasis of this paper is on fuzzy linguistic hedging, used to modify membership functions. This paper investigates the issues of obtaining new definitions for hedges which exceed the traditional definitions given by Zadeh (and others), particularly seeing that the effect of applying these hedges does not cross beyond the reasonable limits of membership values[0,1]and is still meaningful from the point of view of magnitude of membership value and hence be really effective for an application. Some of the most commonly used hedges are presented, these hedges are very, positively, negatively, slightly more, and slightly less. The effects of these hedges on numeric examples are charted.

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