intermediate updated. section 2 w.i.p.; 2 figures though the example might change. Section 2 still needs more text. Rest unchanged :(

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Tom Zuidberg
2026-05-14 14:45:52 +02:00
parent 72bf1eb79b
commit e1a42c8896
2 changed files with 165 additions and 14 deletions

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@@ -21,6 +21,9 @@
% some packages which may be useful when drafting, but should be removed before submission % some packages which may be useful when drafting, but should be removed before submission
\usepackage{todonotes} \usepackage{todonotes}
\usepackage{tikz}
% You can define your own commands. This is useful for shorthands, for example % You can define your own commands. This is useful for shorthands, for example
\newcommand{\EE}{\mathbb{E}} \newcommand{\EE}{\mathbb{E}}
\newcommand{\RR}{\mathbb{R}} \newcommand{\RR}{\mathbb{R}}
@@ -54,7 +57,7 @@
\begin{document} \begin{document}
\title{Influence of update schemes on gene regulatory networks} \title{Influence of update schemes on boolean networks}
% author information % author information
% COMMENT OUT THESE LINES FOR YOUR CONFERENCE SUBMISSION! % COMMENT OUT THESE LINES FOR YOUR CONFERENCE SUBMISSION!
@@ -81,7 +84,162 @@ Possible points to mention here:
\section{Boolean networks} \section{Boolean networks}
Explain Boolean network and what an update scheme is using the synchronous/parallel scheme. Also use figure, e.g. \cref{fig:boolean_example} to further visualize and create a better understanding of boolean networks. Also explain what chaotic behavior is due its relevance for the update schemes. A boolean network consists of nodes $x_i(t)$ that have a boolean state, either $0$ or $1$, at a point in time $t$. Each node has a corresponding update function $x_i(t+1) = f_i(x_1(t), x_2(t), \ldots, x_n(t))$ expressing the new state of $x_i(t+1)$. The state of the boolean network can be describe as a boolean number $x_1 x_2\ldots x_n$ where each node is replaced with the corresponding state.
\begin{figure}
\centering
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\draw (111.33,207.8) node [anchor=north west][inner sep=0.75pt] {$ \begin{array}{l}
f_{1} =\neg x_{2}\\
f_{2} =x_{1}\\
f_{3} =x_{1} \oplus x_{4}\\
f_{4} =x_{3}
\end{array}$};
\end{tikzpicture}
\caption{Example of a boolean network with four nodes. Each vertex indicates that a node is part of the update function of the other node. For instance $x_1$ is part of $f_2$ and $f_3$.
}
\label{fig:bn_example}
\end{figure}
Consider the boolean network shown in \cref{fig:bn_example}. Assume the current state is $0011$, meaning that $x_1, x_2$ are $0$ and $x_3, x_4$ are $1$. The next state when applying the update function all at once is $1011$. Updating the network multiple times creates a trajectory, which is the sequence of the states starting from the initial state. With our example, the trajectory is $0011 \rightarrow 1011 \rightarrow 1101 \rightarrow 0100 \rightarrow \ldots$. Each trajectory in a reasonably small boolean network eventually reaches one of two scenarios. Either it falls into a state that doesn't change when updated, called attractor, or it falls into a cycle of states. In the example, there are 2 cycles of length 8 visible in \cref{fig:bn_ex_state_graph}.
\begin{figure}
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\centering
\caption{State graph of the boolean network shown in \cref{fig:bn_example} using synchronous update scheme.}
\label{fig:bn_ex_state_graph}
\end{figure}
\subsection{Notation} \subsection{Notation}
Define clear notation used throughout the paper. Position of this subsection could change to be part of the Introduction instead. Define clear notation used throughout the paper. Position of this subsection could change to be part of the Introduction instead.
@@ -93,16 +251,21 @@ Explain different update schemes including characteristics for behavior especial
\subsection{Synchronous scheme} \subsection{Synchronous scheme}
The Synchronous (also known as Parallel) update scheme assumes that every node is updated at once. The Synchronous (also known as Parallel) update scheme assumes that every node is updated at once.
\subsection{Sequential scheme} \subsection{Sequential scheme}
close to synchronous. the nodes update in a specific order and take into account the updated input node if that node had been updated before/is positioned earlier in the sequence close to synchronous. the nodes update in a specific order and take into account the updated input node if that node had been updated before/is positioned earlier in the sequence
\subsection{Block-sequential scheme} \subsection{Block-sequential scheme}
mix of synchronous and sequential. predefined blocks update sequential, inside a block the update follows the synchronous scheme mix of synchronous and sequential. predefined blocks update sequential, inside a block the update follows the synchronous scheme
\subsection{Asynchronous deterministic} \subsection{Asynchronous deterministic}
one node is updated per tick following a specific sequence one node is updated per tick following a specific sequence
\subsection{Asynchronous generalized} \subsection{Asynchronous generalized}
same as asynchronous deterministic with the slight change that within the sequence nodes may appear multiple times. same as asynchronous deterministic with the slight change that within the sequence nodes may appear multiple times.
\section{Relevance for Gene Regulatory Networks} \section{Relevance for Gene Regulatory Networks}
\label{sec:relevance_grn} \label{sec:relevance_grn}
Tie the update schemes and their different outcomes or behavior to GRN. Tie the update schemes and their different outcomes or behavior to GRN.
@@ -116,18 +279,6 @@ References: \cite{schwab2020concepts}\cite{aracena2009robustness}\cite{bornholdt
\begin{figure} % The starred version uses both columns; unstarred only one column
\centering
\includegraphics[width=3in]{4bit BN.png}
% TIP: Ensure the original image file has approximately the right dimensions
% (if using matplotlib, specify correct figure size) so that the image is not rescaled too brutally.
\caption{Boolean example (image will be changed!).
% NB: The '~' inserts a non-breaking space, ensuring 'Ref.' is never separated from its number
Simple boolean network example; a graph of the network and most likely a table as well for the updated states $x(t) \rightarrow x(t+1)$ (currently missing)
}
\label{fig:boolean_example}
\end{figure}
\begin{figure*} % The starred version uses both columns; unstarred only one column \begin{figure*} % The starred version uses both columns; unstarred only one column
\centering \centering