scholarly journals f-DLPs: Extending Description Logic Programs with Fuzzy Sets and Fuzzy Logic

2007 ◽  
Author(s):  
Tassos Venetis ◽  
Giorgos Stoilos ◽  
Giorgos Stamou ◽  
Stefanos Kollias
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Sets ◽  
Description Logic ◽  
Logic Programs

Penerapan Logika Samar dalam Peramalan Data Runtun Waktu

2011 ◽  
Vol 3 (2) ◽  
pp. 11-15
Author(s):  
Seng Hansun
Keyword(s):  
Time Series ◽  
Fuzzy Logic ◽  
Time Series Analysis ◽  
Fuzzy Sets ◽  
Fuzzy System ◽  
Time Series Data ◽  
Fuzzy Logic System ◽  
Series Data ◽  
Series Analysis ◽  
Logic System

Recently, there are so many soft computing methods been used in time series analysis. One of these methods is fuzzy logic system. In this paper, we will try to implement fuzzy logic system to predict a non-stationary time series data. The data we use here is Mackey-Glass chaotic time series. We also use MATLAB software to predict the time series data, which have been divided into four groups of input-output pairs. These groups then will be used as the input variables of the fuzzy logic system. There are two scenarios been used in this paper, first is by using seven fuzzy sets, and second is by using fifteen fuzzy sets. The result shows that the fuzzy system with fifteen fuzzy sets give a better forecasting result than the fuzzy system with seven fuzzy sets. Index Terms—forecasting, fuzzy logic, Mackey-Glass chaotic, MATLAB, time series analysis

Connectionist weighted fuzzy logic programs

2008 ◽  
Vol 71 (13-15) ◽  
pp. 2456-2469
Author(s):  
Alexandros Chortaras ◽  
Giorgos Stamou ◽  
Andreas Stafylopatis
Keyword(s):  
Fuzzy Logic ◽  
Logic Programs

scholarly journals Some New De Morgan Picture Operator Triples in Picture Fuzzy Logic

2018 ◽  
Vol 33 (2) ◽  
pp. 143-164
Author(s):  
Cuong Bui Cong ◽  
Roan Thi Ngan ◽  
Le Ba Long
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Sets ◽  
Basic Algebra ◽  
Algebra Structure ◽  
Picture Fuzzy Sets

A new concept of picture fuzzy sets (PFS) were introduced in 2013, which are directextensions of the fuzzy sets and the intuitonistic fuzzy sets. Then some operations on PFS withsome properties are considered in [ 9,10 ]. Some basic operators of fuzzy logic as negation, tnorms, t-conorms for picture fuzzy sets firstly are defined and studied in [13,14]. This paper isdevoted to some classes of representable picture fuzzy t-norms and representable picture fuzzyt-conorms on PFS and a basic algebra structure of Picture Fuzzy Logic – De Morgan triples ofpicture operators.

Fuzzy sets and fuzzy logic: Theory and applications

Endeavour ◽  
1996 ◽  
Vol 20 (1) ◽  
pp. 44 ◽  
Author(s):  
Dennis H. Rouvray
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Sets ◽  
Fuzzy Logic Theory
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