Parameter

Description

Define a parameter of the fit. The parameter should have a name, but you can use the index instead (not encouraged). Notice that parameters with a Gaussian prior must be associated with a covariance matrix. It is not currently possible to specifically define parameters with a Gaussian constraint, but without a covariance.

Config options

Option	Type	Description	Default
parameterName	string	define parameter with name (expected)
parameterIndex	int	define parameter with index
priorType	string	penalty shape (Gaussian/Flat)	Gaussian
priorValue	double	prior value (expected)	nan
isEnabled	bool	use parameter in the propagator	true
isFixed	bool	use parameter in the propagator	false
parameterStepSize	double	Expected scale of the variation	1.0
parameterLimits	pair(double)	minimum and maximum allowed values	[-inf, +inf]
throwLimits	pair(double)	minimum and maximum range to throw	[-inf, +inf]
mirrorRange	pair(double)	boundaries for internal mirroring	[-inf, +inf]
dialSetDefinitions	list(json)	Only for single dimension dials

dialSetDefinitions

The dialSetDefinitions field holds a list that the defines the dials which translate the parameters into event weights. The fields for each dial vary depending on the dial type, but each dial must contain the dialType, and the parameter names (in dialInputList) that are used.

dialSetDefinitions:
    - dialType: "Spline"
      dialInputList:
          - name: "First Parameter"
          - name: "Second Parameter"
      <other fields>