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Reproducibility Repository for Data-Driven Modeling of Conservation Laws
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Jan Habscheid
Reproducibility Repository for Data-Driven Modeling of Conservation Laws
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79093d42
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79093d42
authored
1 week ago
by
Jan Habscheid
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Project3/LyX/DiscussionAndConclusion.lyx
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Project3/LyX/DiscussionAndConclusion.lyx
Project3/LyX/TheoryAndMethods.lyx
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Project3/LyX/TheoryAndMethods.lyx
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.DS_Store
.DS_Store
# Ignore LyX temporary files
# Ignore LyX temporary files
*.lyx~
*.lyx~
*.lyx#
*.lyx#
\ No newline at end of file
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Project3/LyX/DiscussionAndConclusion.lyx
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@@ -107,35 +107,50 @@ name "sec:Discussion-and-Conclusion"
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\end_layout
\end_layout
\begin_layout Standard
\begin_layout Standard
How to improve the identification of
This work presented an accurate algorithm to quantify the uncertainty
\begin_inset Formula $k(x)$
\begin_inset Formula $k(x)$
\end_inset
in a scalar conservation law of the form
\begin_inset Formula $u_{t}+\left(k(x)f(u)\right)_{x}=0$
\end_inset
\end_inset
.
.
\end_layout
\end_layout
\begin_layout Itemize
\begin_layout Standard
Increase number of iterations
The major impact of the resistance function on the solution and the importance to predict this accurately was emphasized.
An optimal choice for the different hyperparameter was discussed and the influence of those on the solution.
\end_layout
\end_layout
\begin_layout Itemize
\begin_layout Standard
Run
Increasing the observations from one dataset to two datasets showed a positive effect on the prediction of the resistance function.
\begin_inset Formula $n$
\end_layout
\end_inset
MCMC iterations with different random starts and take best one
\begin_layout Standard
For future work it remains interesting to find a more efficient method,
as the MCMC algorithm depends on many iterations and is computationally complex.
Furthermore,
several efforts can be made to improve the identification of the resistance function.
\end_layout
\end_layout
\begin_layout Itemize
\begin_layout Enumerate
Increase number of true data
Increase the number of MCMC iterations and adapt the control parameter
\begin_inset Formula $\beta$
\end_inset
when the convergence does not show an improvement about a certain number of steps.
\end_layout
\end_layout
\begin_layout
Itemiz
e
\begin_layout
Enumerat
e
Find best hyperparameter
Run several independent MCMC iterations with different random starts and take the one with the smallest loss.
\end_layout
\end_layout
\begin_layout Itemize
\begin_layout Enumerate
Use even more true solutions
Increase the number of true datasets,
as going from one to two datasets showed promising results.
\end_layout
\end_layout
\end_body
\end_body
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@@ -742,10 +742,6 @@ If the acceptance rate is above
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@@ -742,10 +742,6 @@ If the acceptance rate is above
\end_inset
\end_inset
\end_layout
\end_deeper
\begin_layout Enumerate
\begin_inset Note Note
\begin_inset Note Note
status open
status open
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@@ -754,11 +750,7 @@ The different observations are weighted differently to ensure that the resistanc
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@@ -754,11 +750,7 @@ The different observations are weighted differently to ensure that the resistanc
\begin_inset Formula $k(x)$
\begin_inset Formula $k(x)$
\end_inset
\end_inset
is accurately calculated on the whole domain
is accurately calculated on the whole domain Consider the weighting vector
\end_layout
\begin_layout Enumerate
Consider the weighting vector
\begin_inset Formula $w=[w_{1},w_{2},w_{3},w_{4}]$
\begin_inset Formula $w=[w_{1},w_{2},w_{3},w_{4}]$
\end_inset
\end_inset
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@@ -770,7 +762,6 @@ Consider the weighting vector
\end_layout
\end_layout
\begin_deeper
\begin_layout Enumerate
\begin_layout Enumerate
After each iteration update the weights
After each iteration update the weights
\end_layout
\end_layout
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@@ -788,13 +779,13 @@ Calculate
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@@ -788,13 +779,13 @@ Calculate
\end_layout
\end_layout
\end_deeper
\end_deeper
\end_deeper
\end_inset
\end_inset
\end_layout
\end_layout
\end_deeper
\begin_layout Standard
\begin_layout Standard
The randomly generated parameter
The randomly generated parameter
\begin_inset Formula $\Theta^{(0)}$
\begin_inset Formula $\Theta^{(0)}$
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