What is fuzzy logic in optimization?
Based on simple if-then rules, fuzzy logic is one of the disciplines in artificial intelligence which emulates the human reasoning in terms of linguistic variables. In fuzzy logic, linguistic variables represent natural language variables which humans commonly used to specify semantic rules from several processes.
What is system Dynamic simulation?
System dynamics is a highly abstract method of modeling. It ignores the fine details of a system, such as the individual properties of people, products, or events, and produces a general representation of a complex system. These abstract simulation models may be used for long-term, strategic modeling and simulation.
What is fuzzy simulation?
The tools of fuzzy modeling enable to transform a linguistic description into an algorithm whose result is an action. The main theories applied in fuzzy modeling are fuzzy logic and the fuzzy set theory. In a fuzzy model, variables may represent fuzzy subsets of the universe.
Is system dynamics a simulation method?
Systems dynamics models are continuous simulation models using hypothesized relations across activities and processes. Systems dynamics was developed by Forester in 1961 and was initially applied to dealing with the complexity of industrial economic systems and world environmental and population problems.
What is fuzzy logic model?
The fuzzy logic model (Zadeh, 1965) is a logical mathematical procedure based on the ‘IF-THEN’ rule system, which allows the human thought process to be reproduced in a mathematical form.
Is a store house of associated patterns which are encoded in some form?
An associative memory is a storehouse of associated patterns that are encoded in some form. When the storehouse is incited with a given distorted or partial pattern, the associated pattern pair stored in its perfect form is recalled.
What is meant by system dynamic?
A dynamic system is a system or process in which motion occurs, or includes active forces, as opposed to static conditions with no motion. Dynamic systems by their very nature are constantly moving or must change states to be useful.
How do you simulate System Dynamics?
The steps involved in a simulation are:
- Define the problem boundary.
- Identify the most important stocks and flows that change these stock levels.
- Identify sources of information that impact the flows.
- Identify the main feedback loops.
- Draw a causal loop diagram that links the stocks, flows and sources of information.
What is a System Dynamics approach?
A system dynamics approach is a simulation method in solving real-world problems to describe relationships among variables in complex real systems.
Which is the best definition of fuzzy logic?
Fuzzy logic is a solution to complex problems in all fields of life, including medicine, as it resembles human reasoning and decision making. There is no systematic approach to fuzzy system designing. They are understandable only when simple. They are suitable for the problems which do not need high accuracy.
Can you add rules to a fuzzy logic system?
Mathematical concepts within fuzzy reasoning are very simple. You can modify a FLS by just adding or deleting rules due to flexibility of fuzzy logic. Fuzzy logic Systems can take imprecise, distorted, noisy input information. FLSs are easy to construct and understand.
When to use weighting in a fuzzy logic system?
Since the fuzzy system output is a consensus of all of the inputs and all of the rules, fuzzy logic systems can be well behaved when input values are not available or are not trustworthy. Weightings can be optionally added to each rule in the rulebase and weightings can be used to regulate the degree to which a rule affects the output values.
What is the definition of fuzzification in math?
Fuzzification is the process of assigning the numerical input of a system to fuzzy sets with some degree of membership. This degree of membership may be anywhere within the interval [0,1].