Parent Command
all thirdlevel commands in block > PARAMETER
Subcommand

Description
This command specifies the expected variation sigma of a parameter p. sigma is used to scale the
columns of the Jacobian matrix, yielding dimensionless and comparable sensitivity
coefficients. While the solution of the inverse problem is not affected by the choice of the
scaling factor, all the qualitative sensitivity measures are directly proportional to sigma:
scaled sensitivity coefficient:
If no standard deviation (see
Example
> PARAMETER
>> POROSITY
>>> MATERIAL: FAULT
>>>> expected VARIATION : 0.10
<<<<
<<<
>> ABSOLUTE permeability
>>> MATERIAL: FAULT
>>>> expected VARIATION : 1.00 (one order of magnitude)
<<<<
<<<
<<
> COMPUTATION
>> OPTION
>>> SENSITIVITY analysis
<<<
<<
See Also