computeDegreeOfMembership method
Computes the degree of membership for the given value.
Implementation
@override
double computeDegreeOfMembership(double value ) {
_updateCache();
if ( value >= right || value <= left ) return 0;
return probabilityDensity( value, midpoint, _cache['variance']!.toDouble() ) / _cache['normalizationFactor']!.toDouble();
}