Uncertainties are everywhere. Whether you are developing a new + Artificial Intelligence (AI) system, running complex simulations or + making an experiment in a lab, uncertainties influence the system. + Therefore, an approach is needed to understand how these uncertainties + impact the system’s performance.
+SimDec offers a novel visual way to understand the intricate role + that uncertainties play. A clear Python Application Programming + Interface (API) and a no-code interactive web dashboard make + uncertainty analysis with SimDec accessible to everyone.
+From real life experiments to numerical simulations, uncertainties
+ play a crucial role in the system under study. With the advent of AI
+ and new regulations such as the
+
Traditional methods to analyse the uncertainties focus on
+ quantitative methods to compare the importance of factors, there is a
+ large body of literature and the field is known as: Sensitivity
+ Analysis (SA)
+ (
Simulation Decomposition or SimDec moves the field of SA forward by
+ supplementing the computation of sensitivity indices with the
+ visualization of the type of interactions involved, which proves
+ critical for understanding the system’s behavior and decision-making
+ (
SimDec: explanation of output by most important inputs.
+ A simulation dataset of a structural reliability model with one key
+ output variable and four input variables is used for this case.
+ Inputs 3 and 1 have the highest sensitivity indices and thus are
+ automatically chosen for decomposition. The most influential input 3
+ divides the distribution of the output into three main states with
+ distinct colors. Input 1 further subdivides them into shades. From
+ the graph, it becomes obvious that input 1 influences the output
+ when input 3 is low, but has a negligible effect when input 3 is
+ medium or
+ high.
Besides proposing a comprehensive yet simple API through a Python
+ package available on PyPi, SimDec is also made available to
+ practitioners through an online dashboard at
+
The work on this open-source software was supported by grant + #220177 from Finnish Foundation for Economic Foundation.
+