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author | LordMcFungus <mceagle117@gmail.com> | 2021-03-22 18:05:11 +0100 |
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committer | GitHub <noreply@github.com> | 2021-03-22 18:05:11 +0100 |
commit | 76d2d77ddb2bed6b7c6b8ec56648d85da4103ab7 (patch) | |
tree | 11b2d41955ee4bfa0ae5873307c143f6b4d55d26 /vorlesungen/slides/2/frobeniusanwendung.tex | |
parent | more chapter structure (diff) | |
parent | add title image (diff) | |
download | SeminarMatrizen-76d2d77ddb2bed6b7c6b8ec56648d85da4103ab7.tar.gz SeminarMatrizen-76d2d77ddb2bed6b7c6b8ec56648d85da4103ab7.zip |
Merge pull request #1 from AndreasFMueller/master
update
Diffstat (limited to 'vorlesungen/slides/2/frobeniusanwendung.tex')
-rw-r--r-- | vorlesungen/slides/2/frobeniusanwendung.tex | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/vorlesungen/slides/2/frobeniusanwendung.tex b/vorlesungen/slides/2/frobeniusanwendung.tex new file mode 100644 index 0000000..277d600 --- /dev/null +++ b/vorlesungen/slides/2/frobeniusanwendung.tex @@ -0,0 +1,80 @@ +% +% frobeniusanwendung.tex +% +% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule +% +\begin{frame}[t] +\setlength{\abovedisplayskip}{5pt} +\setlength{\belowdisplayskip}{5pt} +\frametitle{Anwendung der Frobenius-Norm} +\vspace{-18pt} +\begin{columns}[t,onlytextwidth] +\begin{column}{0.48\textwidth} +\begin{block}{Ableitung nach $X\in M_{m\times n}(\mathbb{R})$} +Die Ableitung $Df=\partial f/\partial X$ der Funktion +$f\colon M_{m\times n}(\mathbb{R})\to \mathbb{R}$ ist die Matrix +mit Einträgen +\begin{align*} +\biggl( +\frac{\partial f}{\partial X} +\biggr)_{ij} +&= +\frac{\partial f}{\partial x_{ij}} += +D_{ij}f +\end{align*} +\end{block} +\uncover<2->{% +\begin{block}{Richtungsableitung} +\uncover<5->{Die Matrix $Df$ ist ein Gradient:} +\begin{align*} +\frac{\partial}{\partial t}f(X+tY)\bigg|_{t=0} +&=\uncover<3->{ +\sum_{i,j} +D_{ij} f(X) \cdot y_{ij}} +\\ +&\uncover<4->{= +\langle D_{ij}f(X), Y\rangle_F} +\end{align*} +\end{block}} +\end{column} +\begin{column}{0.48\textwidth} +\uncover<6->{% +\begin{block}{Quadratische Minimalprobleme} +$A=A^t,B,X\in M_n(\mathbb{R})$, Minimum von +\begin{align*} +f(X)&=\langle X,AX\rangle_F + \langle B,X\rangle_F +\intertext{\uncover<7->{Folgerungen:}} +\uncover<8->{ +\langle X,AY\rangle_F&=\langle AX,Y\rangle_F +} +\\ +\uncover<9->{ +D\langle B,\mathstrut\cdot\mathstrut\rangle_F +&= +B +} +\\ +\uncover<10->{ +D_X\langle X, AY\rangle_F +&=AY +} +\\ +\uncover<11->{ +D_Y\langle X, AY\rangle_F +&=AX +} +\\ +\uncover<12->{ +Df &= 2AX + B +} +\intertext{\uncover<13->{Minimum:}} +\uncover<14->{ +X&=-\frac12 A^{-1}B +} +\end{align*} +\uncover<15->{(Kalman-Filter)} +\end{block}} +\end{column} +\end{columns} +\end{frame} |