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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>Information Propagation in Complex Networks</title>
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/simple.css">
<link rel="stylesheet" href="css/custom.css">
<!-- Theme used for syntax highlighting of code -->
<link rel="stylesheet" href="lib/css/tomorrow.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<div class="bbox">
<h3>Information Propagation in<br/>Complex Networks</h3><br/><h4>Structures and Dynamics</h4>
<hr class="shadow">
<p class="largefnt" style="text-align: center;">Marcus Märtens</p>
<!--
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<table style="margin-top:150px">
<tbody class="invis" style="width:100%;">
<tr>
<td>
<img width="200px" height="110px" data-src="./img/NAS_blue_200px.png" alt="NAS logo">
</td>
<td style="padding-right:100px">
Network<br/>Architectures and<br/>Services
</td>
<td>
<img width="394px" height="110px" data-src="./img/TUDLogo.png" alt="TU Delft logo">
</td>
</tr>
</tbody>
</table>
</div>
</section>
<section>
<div class="bbox">
<div class="slideheader"><h3>What is information propagation?</h3></div>
<div class="sliderow">
<div class="leftcol">
<img src="img/whisper.jpg"/>
</div>
<div class="rightcol">
<img src="img/whisperchain.jpg"/>
</div>
</div>
<div class="slidefooter">
I tell you something you did not know before.
</div>
</div>
</section>
<section data-transition="convex-in fade-out">
<div class="bbox">
<div class="slideheader"><h3>Classical information theory</h3></div>
<div class="sliderow">
<div class="leftcol" style="width:60%">
<img src="img/sender1.svg" style="padding-top:150px"/>
</div>
<div class="rightcol" style="width:39%">
<img src="img/shannon.jpg" height="300px" style="padding-top:30px"><br/>
<p class="smallfnt">Claude Shannon (1916-2001)<br/>father of information theory</p>
</div>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section data-transition="fade">
<div class="bbox">
<div class="slideheader"><h3>What if there are more receivers?</h3></div>
<div class="sliderow">
<img src="img/sender2.svg" style="padding-top:30px"/>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section data-transition="fade">
<div class="bbox">
<div class="slideheader"><h3>... that can be senders as well?</h3></div>
<div class="sliderow">
<img src="img/sender3.svg" style="padding-top:30px"/>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section data-transition="fade">
<div class="bbox">
<div class="slideheader"><h3>... with different channels?</h3></div>
<div class="sliderow">
<img src="img/sender4.svg" style="padding-top:30px"/>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section data-transition="fade-in convex-out">
<div class="bbox">
<div class="slideheader"><h3>What if there are really a lot more?</h3></div>
<div class="sliderow">
<img src="img/tech-whois-net.png" style="height:500px"/>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section>
<div class="bbox">
<div class="slideheader"><h3>Two aspects of information propagation</h3></div>
<div class="sliderow">
<div class="leftcol">
<p class="largefnt">Structure</p>
<p class="mediumfnt">networks: nodes and links</p>
<img src="img/barbell_network3.svg" style="padding-top:93px;padding-bottom:100px"/>
<p class="mediumfnt">answers: <b>Who</b> can exchange information?</p>
</div>
<div class="rightcol">
<p class="largefnt">Dynamics</p>
<p class="mediumfnt">change over time<br/>
models, rules and algorithms</p>
<img src="img/dynamics.svg" style="height:300px"/>
<p class="mediumfnt">answers: <b>How</b> is information exchanged?</p>
</div>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section>
<div class="bbox">
<div class="slideheader"><h3>Ch 4: Computer worms</h3></div>
<div class="sliderow">
<div class="leftcol">
<p class="largefnt">Structure</p>
<ul>
<li>IP4 address space</li>
<li>nodes: computers, hosts</li>
<li>links: Internet</li>
</ul>
<p class="largefnt">Dynamics</p>
<ul>
<li><b>worm</b> infects host</li>
<li><b>worm</b> sends copies to random addresses</li>
<li><b>administrator</b> removes infection</li>
</ul>
<p class="largefnt">Result</p>
<p class="mediumfnt">Long-term evolution of computer worms
can be described by time-dependent epidemic model</p>
</div>
<div class="rightcol">
<img src="img/wormwindow.png" style="width:100%"/>
<img src="img/conf_global_4.png" style="width:80%"/>
</div>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section>
<div class="bbox">
<div class="slideheader"><h3>Ch 3: Human brains</h3></div>
<div class="sliderow">
<div class="leftcol">
<p class="largefnt">Structure</p>
<ul>
<li>MEG measurements</li>
<li>nodes: brain regions</li>
<li>links: increased information flow</li>
</ul>
<p class="largefnt">Dynamics</p>
<ul>
<li>microscopic: neuronal activity</li>
<li>macroscopic: information flow between brain regions</li>
</ul>
<p class="largefnt">Result</p>
<p class="mediumfnt">Clusters of small networks provide a spatial
meaningful high-order organization of the brain.
</p>
</div>
<div class="rightcol" >
<img src="img/two-hop.svg" style="height:200px"/>
<img src="img/brains.png" style="width:100%; padding-top:40px"/>
</div>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section>
<div class="bbox">
<div class="slideheader"><h3>Ch 2: Antisocial behavior</h3></div>
<div class="sliderow">
<div class="leftcol">
<p class="largefnt">Structure</p>
<ul>
<li>short-term: 5vs5 ad-hoc matches</li>
<li>long-term: player networks</li>
<li>nodes: players</li>
<li>links: defined by teams</li>
</ul>
<p class="largefnt">Dynamics</p>
<ul>
<li>game interactions (killing avatars)</li>
<li>text-chat between competing teams</li>
<li><b>text-chat between members of a single team</b></li>
</ul>
<p class="largefnt">Result</p>
<p class="mediumfnt">Detection system for antisocial behavior.
</p>
</div>
<div class="rightcol" >
<img src="img/noobcloud.svg" style="width:100%"/>
<img src="img/predict_accuracy.png" style="width:100%; padding-top:10px"/>
</div>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section>
<div class="bbox" >
<div class="slideheader"><h3>Ch 5: Superinfection</h3></div>
<div class="sliderow">
<ul>
<li>What happens when two propagations processes compete?</li>
<li>Can we fight a "bad" computer worm by spreading a "good" computer worm?</li>
</ul>
<p class="mediumfnt">Theoretical models for propagation of one virus: <b>epidemic model</b><br/>
Extension to more viruses: <b>superinfection model</b></p>
</div>
<div class="sliderow" style="margin-top:200px; border:0px black solid;">
<div class="leftcol">
<img src="img/superinfschema.svg"/>
<p class="largefnt">Result</p>
<p class="mediumfnt">Conditions for stable coexistence of both viruses and for extinctions exist.</p>
</div>
<div class="rightcol">
<img src="img/superinfection.gif"/>
</div>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section>
<div class="bbox" >
<div class="slideheader"><h3>Ch 6: Learning network structures</h3></div>
<div class="sliderow">
<ul>
<li>The structure of the network is <b>essential</b> for <b>any</b> propagation!</li>
<li><b>Formulas</b> relate structural network properties with each other, for example:</li>
</ul>
<p class="mediumfnt" style="border: solid 3px red;margin-left:35%;margin-right:35%">
$\blacktriangle = \frac{1}{6} \sum\limits_{i = 1}^{N} \lambda_i^3$
</p>
<ul>
<li>Can a smart machine come up with formulas by studying networks?</li>
</ul>
<img src="img/symbreg.png" height="300px"/>
</div>
<div class="slidefooter">
</div>
</div>
</section>
<section>
<div class="bbox">
<div class="slideheader"><h3>Closing thoughts</h3></div>
<div class="sliderow">
<ul>
<li class="fragment fade-in">Did I tell you something you did not know before?</li>
<li class="fragment fade-in">Good! Information propagation works.</li>
<li class="fragment fade-in">Feel free to propagate this information.
<img src="img/ripples.jpg"/></li>
</ul>
<p class="mediumfnt fragment fade-in">Many thanks to all my collaborators, co-authors and supporters!</p>
</div>
<div class="slidefooter">
</div>
</div>
</section>
</div>
</div>
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