<div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div class="gmail_quote"><br><div dir="ltr"><br><div><p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt">Prezados colegas,</span></p>

<p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt">Nosso próximo encontro do COLMEA será
no dia 17 de maio (quarta-feira), no IMPA.  Na ocasião teremos a seguinte
programação:</span></p>

<p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><b><span style="font-size:12pt">14:15h - Andressa Cerqueira
(UFSCar)</span></b><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><b><span lang="EN-US" style="font-size:12pt">Community
detection in weighted networks </span></b><span lang="EN-US" style="font-size:12pt"></span></p>

<p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><b><span lang="EN-US" style="font-size:12pt">15:50h
- Gabor Lugosi (ICREA - U. Pompeu Fabra)</span></b><span lang="EN-US" style="font-size:12pt"></span></p>

<p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><b><span lang="EN-US" style="font-size:12pt">Problems in
network archaeology: root finding and broadcasting</span></b><b><span lang="EN-US" style="font-size:12pt;font-family:NimbusSanL-BoldItal"> </span></b></p>

<p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Todos são muito bem-vindos. </span><b><span style="font-size:12pt"></span></b></p>

<p class="MsoNormal" style="line-height:17.35pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><b><span style="font-size:12pt">Local do evento: Auditório 1 - IMPA.
Estrada Dona Castorina 110. Jardim Botânico. Rio de Janeiro.</span></b><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="line-height:12.65pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Mais informações sobre
o COLMEA podem ser encontradas através da homepage </span><span style="font-size:12pt"><a href="http://www.im.ufrj.br/~coloquiomea/" target="_blank">http://www.im.ufrj.br/~coloquiomea/</a></span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="line-height:12.65pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Agradecemos se puder divulgar. Em anexo
o cartaz de divulgação. No final da mensagem  inserimos os resumos das
palestras.</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="line-height:12.65pt;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;margin:0cm 0cm 10pt;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Atenciosamente,</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">O
comitê organizador: </span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Americo
Cunha (UERJ)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Evaldo
M. F. Curado (CBPF)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">João
Batista M. Pereira (UFRJ)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Leandro
P. R. Pimentel (UFRJ)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Maria
Eulalia Vares (UFRJ)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Nuno
Crokidakis (UFF)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Roberto
I. Oliveira (IMPA)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Simon
Griffiths (PUC-Rio)</span><span style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black">Yuri
F. Saporito (FGV EMAp)</span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span style="font-size:12pt;color:black"> </span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><b><span style="font-size:12pt"> </span></b></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><b><span lang="EN-US" style="font-size:12pt">Community detection in weighted networks</span></b><span lang="EN-US" style="font-size:12pt"> <br>
Andressa Cerqueira (UFSCar) <br>
<br>
Network models have received increasing attention from the statistical
community, in particular in the context of analyzing and describing the interactions
of complex random systems. In this context, community structures can be
observed in many networks where the nodes are clustered in groups with the same
connection patterns. In this talk, we address the community detection problem
for weighted networks in the case where, conditionally on the node labels, the
edge weights are drawn independently from a Gaussian random variable with mean
and variance depending on the community labels of the edge endpoints. We will
present a fast and tractable EM algorithm to recover the community labels that
achieves the optimal error rate.</span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><span lang="EN-US" style="font-size:12pt"> </span></p>

<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;font-size:11pt;font-family:Calibri,"sans-serif""><b><span lang="EN-US" style="font-size:12pt">Problems in network archaeology: root finding and
broadcasting</span></b><span lang="EN-US" style="font-size:12pt"> <br>
Gábor Lugosi (ICREA - U. Pompeu Fabra) <br>
<br>
Large networks are often naturally modeled by random processes in which nodes
of the network are added sequentially, according to some stochastic rule.
Uniform and preferential attachment trees are among the simplest examples of
such dynamically growing networks. The statistical problems we address in this
talk regard discovering the past of the network when a present-day snapshot is
observed. We present results that show that, even in gigantic networks, a lot
of information is preserved from the very early days. In particular, we discuss
the problem of finding the root and the broadcasting problem.</span><span lang="EN-US" style="font-size:12pt"></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 10pt;line-height:115%;font-size:11pt;font-family:Calibri,"sans-serif""><span lang="EN-US" style="font-size:12pt;line-height:115%"> </span></p></div></div><br>
</div></div>
</div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br><table style="border-top:1px solid #d3d4de"><tr><td style="width:55px;padding-top:13px"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank"><img src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width: 46px; height: 29px;"></a></td><td style="width:470px;padding-top:12px;color:#41424e;font-size:13px;font-family:Arial,Helvetica,sans-serif;line-height:18px">Não contém vírus.<a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank" style="color:#4453ea">www.avast.com</a></td></tr></table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"></a></div>