UQ with UQLab

FAQ Here you can find more detailed answers to the frequently asked questions (FAQ) on the UQLab software. Read this post further for an index of the FAQ. Benchmarks Library of test functions and data sets to test your uncertainty quantification (UQ) algorithms. You know additional test functions or data sets? Share them by creating a new topic here! Read this post further for an index of the benchmark cases. Developers Corner Learn more about the UQLab project with news, updates, and stories from inside the development team. Feature Requests Category for discussing improvements of the existing UQLab features and any new ideas for the upcoming features. Community Q&A and How To This is where you can ask any questions if you’re experiencing problems with UQLab. By and for the community. Follow the community guidelines for posting questions and answers. Find UQLab tutorial, tips, tricks, hacks and share your workflow here!

Topic	Replies	Views	Activity
Sobol Indices by using Polynomial Chaos Expansion Community Q&A and How To sensitivity , pce	2	71	July 1, 2026
Possible numerical edge case in QR-based ML objective with zero custom trend Community Q&A and How To uqlab-bug , kriging , pce , metamodeling	1	43	June 10, 2026
UQ[py]Lab "ConnectTimeoutError" for long analysis Community Q&A and How To inversion , metamodeling	0	55	April 13, 2026
Calculating the PCE coefficients with Gaussian quadrature using existing data Community Q&A and How To pce , metamodeling	5	424	March 4, 2026
MOMap definition for multiple models with multidimensional outputs (UQ[py]Lab - Bayesian inversion) Community Q&A and How To pce , inversion	5	144	February 26, 2026
[Sensitivity analysis with two parameters] Crash when computing the second order in uq_print_uq_sensitivity Community Q&A and How To sensitivity	1	102	February 11, 2026
Multiple Point Enrichment in ALR: learning function based stopping criterion Community Q&A and How To reliability	0	63	October 15, 2025
Error when using uq_evalStochSimMetrics with SPCE model Community Q&A and How To	0	35	October 12, 2025
KLE Random Field and PCE metamodel Community Q&A and How To metamodeling , pce	0	64	October 9, 2025
Why is my uqlab PCE output constant? (For pre-existing discrete data) Community Q&A and How To pce	1	93	October 2, 2025
Problem, if burnIn is an integer value Community Q&A and How To inversion	1	48	September 4, 2025
Reliability of the UQ Results Community Q&A and How To	2	106	July 7, 2025
Uq[Py]Lab v1.0 - How to assign different options for inference of two (or more) marginal distributions Community Q&A and How To input , python	1	78	July 6, 2025
About graphical user interface（GUI）function Community Q&A and How To	0	93	May 12, 2025
Is a Kriging a spectral method as the PCE? Community Q&A and How To	4	159	April 24, 2025
Sobol' indices using SPCE Community Q&A and How To sensitivity , pce , metamodeling	0	58	March 27, 2025
ConnectionError Community Q&A and How To	0	57	March 26, 2025
Calculate Sobol' indices despite some model evaluations failing? Community Q&A and How To uqlink , python	3	188	March 4, 2025
An error in training SPCE models Community Q&A and How To pce , metamodeling	2	91	February 28, 2025
Heteroscedastic problem Community Q&A and How To	2	101	February 17, 2025
Sobol second order arangement in the "AllOrders" list Community Q&A and How To pce , sensitivity	1	52	February 12, 2025
Inverse Gaussian distribution Feature Requests reliability , input	5	306	January 30, 2025
Unexpected Student's t type from marginal inference Community Q&A and How To	3	75	January 8, 2025
probability-BOX Community Q&A and How To	0	39	January 8, 2025
Max session timeout and behavior of resetting a session Community Q&A and How To	0	42	January 2, 2025
Uq[py]lab v0.95 - trouble connecting to a UQ cloud session Community Q&A and How To	15	383	December 19, 2024
Resampling Community Q&A and How To	0	40	December 18, 2024
Implementation of an parallel update for AIES scheme Feature Requests inversion	1	88	December 10, 2024
Query on Selection of the basis function in PCE for Non-Standard Marginals Community Q&A and How To	0	50	November 22, 2024
UQlab MCMC -- AIES not supporting parallel computing now? Community Q&A and How To inversion	2	135	November 14, 2024