scholarly journals Which Algorithms Are Feasible and Which Are Not: Fuzzy Techniques Can Help in Formalizing the Notion of Feasibility

2021 ◽  
pp. 401-406
Author(s):  
Olga Kosheleva ◽  
Vladik Kreinovich
Keyword(s):  
Fuzzy Techniques

Development and Evaluation of Fuzzy Criteria for the Diagnosis of Rheumatoid Arthritis

1996 ◽  
Vol 35 (04/05) ◽  
pp. 334-342 ◽  
Author(s):  
K.-P. Adlassnig ◽  
G. Kolarz ◽  
H. Leitich
Keyword(s):  
Rheumatoid Arthritis ◽  
Reference Model ◽  
American Rheumatism Association ◽  
Uniform Definition ◽  
Sensitivity Rate ◽  
Fuzzy Techniques ◽  
Definition Of ◽  
Different Levels ◽  
Specificity Rate

Abstract:In 1987, the American Rheumatism Association issued a set of criteria for the classification of rheumatoid arthritis (RA) to provide a uniform definition of RA patients. Fuzzy set theory and fuzzy logic were used to transform this set of criteria into a diagnostic tool that offers diagnoses at different levels of confidence: a definite level, which was consistent with the original criteria definition, as well as several possible and superdefinite levels. Two fuzzy models and a reference model which provided results at a definite level only were applied to 292 clinical cases from a hospital for rheumatic diseases. At the definite level, all models yielded a sensitivity rate of 72.6% and a specificity rate of 87.0%. Sensitivity and specificity rates at the possible levels ranged from 73.3% to 85.6% and from 83.6% to 87.0%. At the superdefinite levels, sensitivity rates ranged from 39.0% to 63.7% and specificity rates from 90.4% to 95.2%. Fuzzy techniques were helpful to add flexibility to preexisting diagnostic criteria in order to obtain diagnoses at the desired level of confidence.

Prediction of Machinability characteristics of Ti6Al4V alloy using Neural Networks and Neuro-Fuzzy techniques

2018 ◽  
Vol 5 (2) ◽  
pp. 8454-8463 ◽  
Author(s):  
N. Harsha ◽  
I. Ajit Kumar ◽  
K. Sita Rama Raju ◽  
S. Rajesh
Keyword(s):  
Neural Networks ◽  
Ti6al4v Alloy ◽  
Neuro Fuzzy ◽  
Fuzzy Techniques

Classification Of Road Accidents Using Fuzzy Techniques

2018 ◽  
Author(s):  
Anastasios Katsoukis ◽  
Lazaros Iliadis ◽  
Avrilia Konguetsof ◽  
Basil Papadopoulos
Keyword(s):  
Road Accidents ◽  
Fuzzy Techniques

scholarly journals Simple linear interpolation explains all usual choices in fuzzy techniques: Membership functions, t-norms, t-conorms, and defuzzification

2015 ◽  
Author(s):  
Vladik Kreinovich ◽  
Jonathan Quijas ◽  
Esthela Gallardo ◽  
Caio De Sa Lopes ◽  
Olga Kosheleva ◽  
...  
Keyword(s):  
Linear Interpolation ◽  
Membership Functions ◽  
Fuzzy Techniques
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