Package Contents

	ConcaveLookupPositive Concave Lookup with positive slope; fixpoints are (0,y0) and (1,1)
	ConcaveLookupNegative Concave Lookup with negative slope; fixpoints are (0,y0) and (1,0)
	ConvexLookupPositive Convex Lookup with positive slope; usually with fixpoint (0,y0) and fixpoint (1,1)
	ConvexLookupNegative Convex Lookup with negative slope usually defined for the range [0,∞) passing through the fixpoint (1,1)
	JanoschekPositive Janoschek's (S-shaped) growth curve with positive slope
	JanoschekNegative Janoschek's (S-shaped) growth curve with negative slope
	PerformanceIndicator Indicator function using fuzzy membership functions
	SShapedPositive Symmettric S-shaped curve with positive slope around origin (0,0)
	SShapedNegative Symmettric S-shaped curve with negative slope around origin (0,0)
	TableFunction Table function defined by external data on file using Modelica's CombiTable format
	TableFunctionVector Table function for vector input and output using Modelica's CombiTable format

Information

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Table- or Lookup-Functions usually map some variable (usually normalized as a dimensionless input) onto a real number by either providing a parametric funcion or a table of values which is then used for interpolation. Typically lookup functions are nonlinear functions and introduce nonlinearity to dynamic models [3, Ch. 14].

Acknowledgements

The parametric lookup functions presented in this package are to a great part inspired by an article written by Khalid Saeed and Arit Irmaridiris [4]. They either directly use the proposed functional form from that article or were slightly modified by the author of the Business Simulation Library using Wolfram Mathematica.