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SUMMARY:Towards a Common Standard for Uncertainty Quantification - Martin 
 Otter\, Amin Bajand\, Lena Buffoni\, Hans Olsson\, Elmir Nahodovic\, Antoi
 ne Vandamme\, Adrian Pop\, Robert Hällqvist\, Oliver Lenord\, L. Viktor L
 arsson
DTSTART;TZID=Europe/Zurich:20250909T130000
DTEND;TZID=Europe/Zurich:20250909T132500
DTSTAMP:20260817T163815Z
UID:pretalx-16thmodelicafmiconference-AMYDFN@pretalx.com
DESCRIPTION:Uncertainty Quantification (UQ) studies allow us to determine 
 whether a model is fit for a particular purpose\, as well as the operation
 al domain in which it can be used. Standardising the UQ analysis setup and
  result summary enables the iterative composition of UQ information\, whic
 h is a crucial step in evaluating model credibility. In this paper\, we pr
 esent an initial attempt to specify UQ information as a cross-layer standa
 rd for Modelica-\, FMI-\, and SSP-based workflows subject to two essential
  restrictions: (a) uncertainties can only be described in terms of paramet
 ers\, and (b) analysis is limited to forward uncertainty propagation and s
 ensitivity analysis of nonlinear models. More analysis features are planne
 d for the future. The approach is illustrated using both a simple example 
 and an industrial use case.
LOCATION:Forum
URL:https://pretalx.com/16thmodelicafmiconference/talk/AMYDFN/
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BEGIN:VEVENT
SUMMARY:Session Chair - Martin Otter
DTSTART;TZID=Europe/Zurich:20250910T091400
DTEND;TZID=Europe/Zurich:20250910T091500
DTSTAMP:20260817T163815Z
UID:pretalx-16thmodelicafmiconference-7KL8E3@pretalx.com
DESCRIPTION:This session is chaired by
LOCATION:202
URL:https://pretalx.com/16thmodelicafmiconference/talk/7KL8E3/
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SUMMARY:Resizable Arrays in Object-Oriented Modeling - Martin Otter\, Hild
 ing Elmqvist
DTSTART;TZID=Europe/Zurich:20250910T143500
DTEND;TZID=Europe/Zurich:20250910T150000
DTSTAMP:20260817T163815Z
UID:pretalx-16thmodelicafmiconference-7CF3TW@pretalx.com
DESCRIPTION:The Modelica language (Modelica.org) makes it easy to build la
 rge\, complex models by allowing the instantiation of reusable component m
 odels. Modelica tools typically expand arrays of variables\, equations and
  components and perform symbolic transformations on the scalar elements. T
 his reduces the efficiency of the translation process and makes it difficu
 lt to change array dimensions after translation.\n\nScalarization can be a
 voided by imposing certain restrictions on the way models are written. Thi
 s paper describes such restrictions\, and the algorithms needed to be appl
 ied during the translation. As a result\, arrays are resizable after trans
 lation and also during simulation. Several examples demonstrate the approa
 ch with the Web App Modiator. As a side effect\, it is also shown how to p
 rovide meaningful diagnostics for erroneous models.
LOCATION:202
URL:https://pretalx.com/16thmodelicafmiconference/talk/7CF3TW/
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SUMMARY:Modiator - A Web App for Modelica Simulation - Martin Otter\, Hild
 ing Elmqvist
DTSTART;TZID=Europe/Zurich:20250910T152500
DTEND;TZID=Europe/Zurich:20250910T155000
DTSTAMP:20260817T163815Z
UID:pretalx-16thmodelicafmiconference-Q3FFN7@pretalx.com
DESCRIPTION:The Modelica language (www.modelica.org) has become a de facto
  standard for systems modeling and many tools exist. This paper describes 
 certain modern enhancements and a static web app implementation called Mod
 iator (Modelica Instant Simulator). It allows an improved immediate first-
 time user experience since the web app is available in seconds and simulat
 ions can be done directly in the browser. State of the art numerical solve
 rs from the Sundials suite have been compiled into WebAssembly. The Modeli
 ca model is translated into Javascript code using techniques such as sorti
 ng\, tearing\, index reduction\, state selection\, etc. A subset of Modeli
 ca is supported with some extensions\, for example\, support for self-modi
 fying models. This paper also presents the Fluid1D and Model3D libraries.
LOCATION:202
URL:https://pretalx.com/16thmodelicafmiconference/talk/Q3FFN7/
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