org.knime.base.node.mine.bfn.fuzzy.norm
Interface Norm

All Known Implementing Classes:

LukaNorm, MinMaxNorm, ProdNorm, YagerNorm

public interface Norm

Fuzzy norm interface which implements the fuzzy operator for conjunction and disjunction, also known as t-norm and tco-norm.

Author:

Thomas Gabriel, University of Konstanz

Field Summary

static String	NORM_KEY Choice of fuzzy norm.
static Norm[]	NORMS Number of available norm choices.

Method Summary

double	computeTCoNorm(double a, double b) Computes fuzzy conjunction.
double	computeTNorm(double a, double b) Computes the fuzzy disjunction.

Field Detail

NORM_KEY

static final String NORM_KEY

Choice of fuzzy norm.

See Also:

Constant Field Values

NORMS

static final Norm[] NORMS

Number of available norm choices.

Method Detail

computeTNorm

double computeTNorm(double a,
                    double b)

Computes the fuzzy disjunction.

Parameters:

a - the membership degree of fuzzy membership function A

b - the membership degree of fuzzy membership function B

Returns:

the calculated fuzzy membership degree of a and b using TNorm

computeTCoNorm

double computeTCoNorm(double a,
                      double b)

Computes fuzzy conjunction.

Parameters:

a - the membership degree of fuzzy membership function A

b - the membership degree of fuzzy membership function B

Returns:

the calculated fuzzy membership degree of a and b using TCoNorm