C# Class QACExperimenter.Utilities

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Public Methods

Method	Description
CountInstancesOfCharacters ( string inString, char character ) : int
DateTimeToUnixTimestamp ( System.DateTime dateTime ) : int
GetPrefix ( string query, int prefixLength ) : string	Extract the prefix from a query, returns the prefix of length prefixLength, or null if the query is not long enough to extract a prefix from
SigmoidFunction ( double x, double max, double k, double n ) : double	Implements a sigmoid function with the parameters: y = max · k n / (k n + x n) (Returns Y value). See: http://numberlinx.org/Sigmoid%20Curves.html for visual parameter tuning examples.

Method Details

CountInstancesOfCharacters() public static method

public static CountInstancesOfCharacters ( string inString, char character ) : int
inString	string
character	char
return	int

DateTimeToUnixTimestamp() public static method

public static DateTimeToUnixTimestamp ( System.DateTime dateTime ) : int
dateTime	System.DateTime
return	int

GetPrefix() public static method

Extract the prefix from a query, returns the prefix of length prefixLength, or null if the query is not long enough to extract a prefix from

public static GetPrefix ( string query, int prefixLength ) : string
query	string
prefixLength	int
return	string

SigmoidFunction() public static method

Implements a sigmoid function with the parameters: y = max · k n / (k n + x n) (Returns Y value). See: http://numberlinx.org/Sigmoid%20Curves.html for visual parameter tuning examples.

public static SigmoidFunction ( double x, double max, double k, double n ) : double
x	double	X value
max	double	Maximum value
k	double	Half-maximum
n	double	Steepness
return	double