Sensitivity Analysis
To perform a sensitivity analysis, you need to have added at least two parameters and an observation. The following Sensitivity analysis methods are available:
- Sobol
- Fourier Amplitude
- Random Balance Designs Fourier Amplitude
- Delta Moment-independent Measure
Select one of the sensitivity analysis method and chose the observation for which you want to check the sensitivity of parameters. You will need to specify 'seed' in the 'seed box'. This will determine how many samples are generated and varies between sensitivity analysis methods.
Fig. 11. Sensitivity Analysis Section
Click "Analyse" to begin running sensitivity analysis. Note that this might take a long time to finish depending on how large your model is. To have an idea of how long the sensitivity analysis will take, run your model in the 'Run' section and multiply the time it takes to run by the number of parameter samples. After the analysis is complete, you can click on "1st Order Sensitivity" to sort from most sensitive to least sensitive. You can then choose which parameters you would like to keep. To remove parameters, you will need to go back to the 'Parameters’ section and click ‘Remove’ on the parameter row you want to remove (there is an ‘X’ button on the right of each row).
You can now proceed to ‘Calibration’.