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frbs (version 1.0-0)

Fuzzy rule-based systems

Description

This package implements functionality and various algorithms to build and use fuzzy rule-based systems (FRBS). FRBSs are based on the fuzzy concept, proposed by Zadeh in 1965, which aims at representing the reasoning of human experts in a set of IF-THEN rules, to handle real-life problems in, e.g., control, prediction and inference, data mining, bioinformatics data processing, robotics, and speech recognition. FRBSs are also known as fuzzy inference systems and fuzzy models. During the modeling of an FRBS, there are two important steps that need to be conducted: structure identification and parameter estimation. Nowadays, there exists a wide variety of algorithms to generate fuzzy IF-THEN rules automatically from numerical data, covering both steps. Approaches that have been used in the past are, e.g., heuristic procedures, neuro-fuzzy techniques, clustering methods, genetic algorithms, least squares methods, gradient descent, etc. This package aims to implement the most widely used standard procedures, thus offering a standard package for FRBS modeling to the R community.

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Version

Install

install.packages('frbs')

Monthly Downloads

3,496

Version

1.0-0

License

GPL (>= 2)

Maintainer

Christoph Bergmeir

Last Published

October 29th, 2012

Functions in frbs (1.0-0)

HGD.update

HGD updating function
HGD

HGD model building
MSGFS.test

MSGFS: The prediction phase
ANFIS

ANFIS model building
DM.update

DM updating function
DENFIS.eng

DENFIS prediction function
WM

WM model building
ECM

Envolving Clustering Method
HyFIS

HyFIS model building
defuzzifier

Defuzzifier to transform from fuzzy terms to crisp values
MSGFS

MSGFS model building
frbsObjectFactory

The object factory for frbs objects
HyFIS.update

HyFIS updating function
frcs.eng

frcs: prediction phase
plotMF

The plotting function
norm.data

The data normalization
frbs.eng

The prediction phase
frcs

frcs model building
DENFIS

DENFIS model building
rulebase

The rule checking function
frbsData

Data set of the package
GFS

GFS model building
ANFIS.update

ANFIS updating function
frbs.learn

The frbs model building function
denorm.data

The data de-normalization
fuzzifier

Transform from crisp set into fuzzy terms
summary.frbs

The summary function for frbs objects
DM

DM model building
inference

The process of fuzzy reasoning
predict.frbs

The frbs prediction stage
frbs.gen

The frbs model generator
frbs-package

Getting started with the frbs package
SBC

The subtractive clustering and fuzzy c-means (SBC) model building
data.gen3d

A data generator
SBC.test

SBC prediction phase