14.2.27 Class Parameter

mosek.fusion.Parameter

The parameter class defines a parameter belonging to a specific model. A parameter is a placeholder for a constant (of any shape) whose value can be changed at any point in the life of the model. The Parameter object is not created directly, but through the factory methods Model.parameter.

Implements:
 

Expression

Members:
 

Expression.eval – Evaluate the expression and push the result onto the work stack.

Expression.index – Get a single element in the expression.

Expression.pick – Pick a number of elements from the expression.

Expression.toString – Return a string representation of the expression object.

Parameter.asExpr – Convert parameter to an expression

Parameter.getNumNonzero – Get number of non-zero elements in the parameter. This means the number of elements in the sparsity pattern - not the number of numeric non-zeros.

Parameter.getSize – Get the total number of elements in the parameter

Parameter.getValue – Get the current parameter values.

Parameter.isSparse – Return whether the parameter has a sparsity pattern.

Parameter.reshape – Reshape the parameter. The new shape must have the same size as the old.

Parameter.setValue – Set the parameter values.

Parameter.slice – Take a slice of the parameter.

Parameter.asExpr
asExpr() -> Expression

Convert parameter to an expression

Return:
  (Expression)
Parameter.getNumNonzero
getNumNonzero() -> int

Get number of non-zero elements in the parameter. This means the number of elements in the sparsity pattern - not the number of numeric non-zeros.

Return:
  (int)
Parameter.getSize
getSize() -> int

Get the total number of elements in the parameter

Return:
  (int)
Parameter.getValue
getValue() -> float[]

Get the current parameter values.

Return:
  (float[])
Parameter.isSparse
isSparse() -> bool

Return whether the parameter has a sparsity pattern.

Return:
  (bool)
Parameter.reshape
reshape(int[] dims) -> Parameter

Reshape the parameter. The new shape must have the same size as the old.

Parameters:
 dims (int[]) – The new shape
Return:
  (Parameter)
Parameter.setValue
setValue(float value)
setValue(float[] values)
setValue(float[][] values2)

Sets the value of this parameter.

The number of input values must match the size of the shape of the parameter. If the parameter is sparse, values on zero-positions are simply ignored.

Parameters:
 
  • value (float) – Set all parameter elements to this value.
  • values (float[]) – Set parameter elements to these values. The length of the array must match the size of the parameter. This form is valid no matter the shape of the parameter.
  • values2 (float[][]) – Set parameter elements to these values. The shape must exactly match the shape of the two-dimensional parameter.
Parameter.slice
slice(int start, int stop) -> Parameter
slice(int[] astart, int[] astop) -> Parameter

Take a slice of the parameter.

Parameters:
 
  • start (int) – The first index in a one-dimensional parameter.
  • stop (int) – The last-plus-one index in a one-dimensional parameter.
  • astart (int[]) – The first index in the parameter.
  • astop (int[]) – The last-plus-one index in the parameter.
Return:
 

(Parameter)