Use of Fuzzy Logic in a Rule-based System in Petroleum Geology

Author(s):  
J. LEBAILLY ◽  
R. MARTIN-CLOUAIRE ◽  
A. PRADE
Author(s):  
V. S. Giridhar Akula

A rule-based system is a set of “if-then” statements that uses a set of assertions, to which rules on how to act upon those assertions are created. Rule-based expert systems have played an important role in modern intelligent systems and their applications in strategic goal setting, planning, design, scheduling, fault monitoring, diagnosis, and so on. The theory of decision support system is explained in detail. This chapter explains how the concepts of fuzzy logic are used for forward and backward chaining. Patient data is analyzed with the help of inference rules.


Author(s):  
Adolf Grauel ◽  
Lars A. Ludwig ◽  
Georg Klene

The analysis of electrocardiograms (ECGs) helps physicians make their cardiac diagnosis. Therefore a large store of medical knowledge and practical experience is required. In this paper we report on our investigations of a rule-based fuzzy logic system that processes ECG data using the knowledge of a medical expert. The aim is to give support to the physician for his diagnosis. In this first consideration we discuss single modules of the rule-based system proposed and moreover we present the used input and output variables of the rulebases. The performance of the implemented rule-based fuzzy logic system is tested using ECGs with abnormalities in the P and T wave as well as in the QRS complex. The system's output corresponds to the analysis of these ECGs by a medical expert.


Author(s):  
Ivana Micić ◽  
Nada Damljanović ◽  
Zorana Jančić

The paper presents a method for building fuzzy systems using the input-output data that can be obtained from examples. Using this method, a rule-based system is created, where fuzzy logic depends on the opinions and preferences of decision-makers involved in the process. Some advantages of the proposed method are high-lighted. We have provided a practical example to illustrate the application of the process.


Author(s):  
J.M. Keller ◽  
P. Gader ◽  
O. Sjahputera ◽  
C.W. Caldwell ◽  
H.-M.T. Huang

Fuzzy Systems ◽  
2017 ◽  
pp. 906-933
Author(s):  
V. S. Giridhar Akula

A rule-based system is a set of “if-then” statements that uses a set of assertions, to which rules on how to act upon those assertions are created. Rule-based expert systems have played an important role in modern intelligent systems and their applications in strategic goal setting, planning, design, scheduling, fault monitoring, diagnosis, and so on. The theory of decision support system is explained in detail. This chapter explains how the concepts of fuzzy logic are used for forward and backward chaining. Patient data is analyzed with the help of inference rules.


Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 8095
Author(s):  
Khalid Mahmood Aamir ◽  
Laiba Sarfraz ◽  
Muhammad Ramzan ◽  
Muhammad Bilal ◽  
Jana Shafi ◽  
...  

Diabetes is a fatal disease that currently has no treatment. However, early diagnosis of diabetes aids patients to start timely treatment and thus reduces or eliminates the risk of severe complications. The prevalence of diabetes has been rising rapidly worldwide. Several methods have been introduced to diagnose diabetes at an early stage, however, most of these methods lack interpretability, due to which the diagnostic process cannot be explained. In this paper, fuzzy logic has been employed to develop an interpretable model and to perform an early diagnosis of diabetes. Fuzzy logic has been combined with the cosine amplitude method, and two fuzzy classifiers have been constructed. Afterward, fuzzy rules have been designed based on these classifiers. Lastly, a publicly available diabetes dataset has been used to evaluate the performance of the proposed fuzzy rule-based model. The results show that the proposed model outperforms existing techniques by achieving an accuracy of 96.47%. The proposed model has demonstrated great prediction accuracy, suggesting that it can be utilized in the healthcare sector for the accurate diagnose of diabetes.


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