<div dir="ltr"><div class="gmail_default" style=""><div dir="ltr" style="font-size:small;font-family:Arial,Helvetica,sans-serif"><div><font face="georgia, serif" color="#000000"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b>When:</b>    </font></font><font style="vertical-align:inherit"><font style="vertical-align:inherit">    Wednesday, January 31st at <b style="background-color:rgb(255,255,0)">10am CT</b><b> </b><b style="background-color:rgb(255,255,0)">*Please note the time change*</b></font></font><br></font></div></div><div style=""><p style="font-size:small;font-family:Arial,Helvetica,sans-serif;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;margin:0px"><font color="#000000"><font style="vertical-align:inherit"><font face="georgia, serif" style="vertical-align:inherit"><b><span style="background-color:rgb(255,255,0)"><br></span></b></font></font></font></p><div class="gmail_default" style="font-size:small;font-family:Arial,Helvetica,sans-serif"><font face="georgia, serif" color="#000000"><b>Where:       </b>Talk will be given <font style="font-weight:bold"><u>live, in-person</u></font><font style="font-weight:bold"> </font>at</font></div><p class="MsoNormal" style="font-size:small;font-family:Arial,Helvetica,sans-serif;margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif" color="#000000">                       TTIC, 6045 S. Kenwood Avenue</font></p><p class="MsoNormal" style="font-size:small;font-family:Arial,Helvetica,sans-serif;margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif">                       5th Floor, Room 530<b> </b></font></p><p class="MsoNormal" style="font-size:small;font-family:Arial,Helvetica,sans-serif;margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><b><font face="georgia, serif" color="#000000"><br></font></b></p><p class="MsoNormal" style="font-size:small;font-family:Arial,Helvetica,sans-serif;margin:0in 0in 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif" color="#000000"><b style="letter-spacing:0.2px">Virtually:</b><span style="letter-spacing:0.2px">  via Panopto </span>(<a href="https://uchicago.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=15b7f55a-3b5b-421d-88fd-b0f2013c8146" target="_blank">livestream</a><span style="letter-spacing:0.2px">)</span><br></font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif" color="#000000" style=""><br></font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif"><font color="#000000"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b>Who: </b>         </font></font></font>Venkat Chandrasekaran, Caltech</font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"></p><div style=""><p style="letter-spacing:0.2px"><font face="georgia, serif" style="" color="#000000"><span style="letter-spacing:normal"><b style="">Title:</b>          </span><span style="letter-spacing:normal">On False Positive Error</span></font></p><div style="font-size:small"><font face="georgia, serif"><font color="#000000" style=""><b style="">Abstract:  </b></font>Controlling the false positive error in model selection is a prominent paradigm for gathering evidence in data-driven science.  In model selection problems such as variable selection and graph estimation, models are characterized by an underlying Boolean structure such as presence or absence of a variable or an edge.  Therefore, false positive error or false negative error can be conveniently specified as the number of variables/edges that are incorrectly included or excluded in an estimated model.  However, the increasing complexity of modern datasets has been accompanied by the use of sophisticated modeling paradigms in which defining false positive error is a significant challenge.  For example, models specified by structures such as partitions (for clustering), permutations (for ranking), directed acyclic graphs (for causal inference), or subspaces (for principal components analysis) are not characterized by a simple Boolean logical structure, which leads to difficulties with formalizing and controlling false positive error.  We present a generic approach to endow a collection of models with partial order structure, which leads to systematic approaches for defining natural generalizations of false positive error and methodology for controlling this error.  (Joint work with Armeen Taeb, Peter Bühlmann, Parikshit Shah). </font></div><div style="font-size:small;font-family:Arial,Helvetica,sans-serif"><br></div><div style=""><font face="georgia, serif" style=""><b style="">Short Bio: </b>Venkat Chandrasekaran is a Professor at Caltech in Computing and Mathematical Sciences and in Electrical Engineering. He received a Ph.D. in Electrical Engineering and Computer Science from MIT (2011), and he received undergraduate degrees in Mathematics and in Electrical and Computer Engineering from Rice University (2005). He was awarded the Jin-Au Kong Dissertation Prize for the best doctoral thesis in Electrical Engineering at MIT (2012), the Young Researcher Prize in Continuous Optimization (2013), the Sloan Research Fellowship in Mathematics (2016), and the INFORMS Optimization Society Prize for Young Researchers (2016). His research interests lie in mathematical optimization and its interface with topics in the information sciences.</font></div><div style="font-size:small;font-family:Arial,Helvetica,sans-serif"><br></div></div><div style="font-size:small;font-family:Arial,Helvetica,sans-serif"><font face="georgia, serif" color="#000000"><b>Host: <a href="mailto:nati@ttic.edu">Nati Srebro</a></b></font></div></div></div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><b style="background-color:rgb(255,255,255)"><font color="#3d85c6">Brandie Jones </font></b><div><div><div><font color="#3d85c6"><b><i>Executive </i></b></font><b style="color:rgb(61,133,198)"><i>Administrative Assistant</i></b></div></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6">Toyota Technological Institute</font></span></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6">6045 S. Kenwood Avenue</font></span></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6">Chicago, IL  60637</font></span></div></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6"><a href="http://www.ttic.edu" target="_blank">www.ttic.edu</a> </font></span></div></div></div></div>