Application of a new fuzzy logic model known as "SMRGT" for estimating flow coefficient rate

Abstract

Since we all have our own set of limitations when it comes to perceiving the world and reasoning profoundly, we are constantly met with uncertainty as a result of a lack of information (lexical impression, incompleteness), as well as specific measurement inaccuracies. It has been found that uncertainty, which shows up as ambiguity, is the root cause of complexity, which is everywhere in the real world. Most of the uncertainty in civil engineering systems comes from the fact that the constraints (parameters) are hard to understand and are described in a vague way. The ambiguity comes from a number of sources, including physical arbitrariness, statistical uncertainty due to using limited information to estimate these characteristics, and model uncertainty due to using overly simplified methods and idealized depictions of actual performances. Thus, It is better to combine fuzzy set theory and fuzzy logic. Fuzzy logic is well-suited to modeling the indeterminacy and ambiguity that result from multiple factors and a lack of data. In order to improve upon a previous predictive model, this paper makes use of a smart model built on a fuzzy logic system (FLS). Precipitation, temperature, humidity, slope, and land use data were all taken into account as input variables in the fuzzy model. Toprak's original explanation of the simple membership function and fuzzy rules generation technique (SMRGT) was based on the fuzzy-Mamdani methodology, and used the flow coefficient as its output. The model's results were compared to available data. The following factors were considered in the comparison: 1) The maximum, minimum, mean, standard deviation, skewness, variation, and correlation coefficients are the seven statistical parameters. 2) Four types of error criteria: Mean Absolute Relative Error (MARE), Mean Square Error (MSE), Mean Absolute Error (MAE), and Root Mean Square Error (RMSE). 3) Scatter diagram.

Evaluating the Efficiencies of Logistics Centers with Fuzzy Logic: The Case of Turkey

“…Likewise, the hybrid utilization of the mentioned methods has been employed in various studies during the selection and implementation of membership functions. One of these hybrid forms was the simple membership function and fuzzy rule generation technique (SMRGT), introduced to the literature by Toprak in 2009 [108] and subsequently favored in various studies [109]. Although numerous types of membership functions are available, it is indicated apart from variations in methodology, there is not a significant change in the outcome among these functions [107].…”