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Wide Interest Seminar : Saltelli Andrea (Bergen)

  Monday 3 December 2018 at 10h30

  Conference       Salle de conférence Jean-Claude ANDRE    

Lecture: Sensitivity analysis, an introduction

“Are the results from a particular model more sensitive to changes in the model and the methods used to estimate its parameters, or to changes in the data?”

This remark by Giandomenico Majone goes the heart of the problem setting of sensitivity analysis, a tool which all modellers from all fields of application use to improve the quality of their inference. Sensitivity Analysis is crucial both in the model construction and model interpretation phases, and is considered an important ingredient of model verification and validation.

Sensitivity analysis is the study of how the uncertainty in the output of a mathematical model or system (numerical or otherwise) can be apportioned to different sources of uncertainty in its inputs. A related practice is uncertainty analysis, which has a greater focus on uncertainty quantification and propagation of uncertainty; ideally, uncertainty and sensitivity analysis should be run in tandem (Source: https://en.wikipedia.org/wiki/Sensitivity_analysis)

The talk will review some principles of sensitivity analysis, good and bad practices, and some practitioners' insight on when to use what.

Reading material:

Saltelli, A., Ratto, M., Andres, T., Campolongo, F., Cariboni, J., Gatelli, D. Saisana, M., Tarantola, S., 2008, Global Sensitivity Analysis. The Primer, John Wiley & Sons publishers.

Saltelli, A., Annoni, P., 2010, How to avoid a perfunctory sensitivity analysis, Environmental Modeling and Software, 25, 1508-1517.

Andrea Saltelli, Ksenia Aleksankina, William Becker, Pamela Fennell, Federico Ferretti, Niels Holst, Sushan Li, Qiongli Wu, 2018, Why So Many Published Sensitivity Analyses Are False. A Systematic Review of Sensitivity Analysis Practices, available on ArXiv.

CALENDAR

Monday

27

May

2024

🎓 PhD Defense: Thibault GIOUD

Monday 27 May 2024From 14h00 at 18h00

  Phd Thesis       Cerfacs, Toulouse, France    

Thursday

30

May

2024

Young PhD day (JDD2024@Cerfacs) – 30/05/2024

Thursday 30 May 2024From 9h00 at 17h00

  Journée des Doctorants       CERFACS     

Monday

03

June

2024

High fidelity simulations of Turbomachinery flows

From Monday 3 June 2024 to Wednesday 5 June 2024

  Training    

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