Description Usage Arguments Details Value Author(s) See Also Examples

Given data in the form of membership degrees to fuzzy sets, compute the truth value of given list of rules.

1 2 3 4 5 |

`x` |
Data for the rules to be evaluated on. Could be either a numeric matrix or numeric vector. If matrix is given then the rules are evaluated on rows. Each value of the vector or column of the matrix represents a predicate - it's numeric value represents the truth values (values in the interval [0, 1]). |

`rules` |
Either an object of class "farules" or list of character vectors where each vector is a rule
with consequent being the first element of the vector. Elements of the vectors (predicate
names) must correspond to the |

`tnorm` |
A character string representing a triangular norm to be used (either |

`onlyAnte` |
TRUE if only antecedent-part of a rule should be evaluated. Antecedent-part of a rule are all predicates in rule vector starting from the 2nd position. (First element of a rule is the consequent - see above.) If FALSE, then the whole rule will be evaluated (antecedent part together with consequent). |

`parallel` |
Whether the processing should be run in parallel or not. Parallelization is
implemented using the |

The aim of this function is to compute the truth value of each rule in a list on given data.
Each rule in the `rules`

list is represented as a character vector of predicates with
the first element being considered as a rule's consequent.

`x`

is data either in a form of a numeric vector or numeric matrix. If vector is given
then `names(x)`

must correspond to the predicate names in `rules`

. If `x`

is a
matrix then each column represents a predicate and thus `colnames(x)`

must correspond to
the predicate names in `rules`

.

Values of either an input vector or matrix are interpreted as truth values. If matrix is given, the resulting truth values are computed row-wisely.

The type of conjunction to be used can be specified with the `tnorm`

argument.

If `x`

is a vector then the result of this function is a list with a truth value of each rule.
If `x`

is a matrix, then a list of vectors of truth values is returned with truth values of
the rules being computed row-wisely.

Michal Burda

`aggregateConsequents`

,
`defuzz`

`perceive`

,
`pbld`

,
`fcut`

,
`lcut`

,
`farules`

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | ```
# fire whole rules on a vector
x <- 1:10 / 10
names(x) <- letters[1:10]
rules <- list(c('a', 'c', 'e'),
c('b'),
c('d', 'a'),
c('c', 'a', 'b'))
fire(x, rules, tnorm='goguen')
# fire antecedents of the rules on a matrix
x <- matrix(1:20 / 20, nrow=2)
colnames(x) <- letters[1:10]
rules <- list(c('a', 'c', 'e'),
c('b'),
c('d', 'a'),
c('c', 'a', 'b'))
fire(x, rules, tnorm='goedel', onlyAnte=TRUE)
# the former command should be equal to
fire(x, antecedents(rules), tnorm='goedel')
``` |

lfl documentation built on May 29, 2017, 10:53 a.m.

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