<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small"><div class="gmail_default"><div class="gmail_default"><div class="gmail_default"><div style="color:rgb(80,0,80)"><font style="font-family:arial,sans-serif;color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><b>When:</b> </font></font><font style="color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><font face="arial, sans-serif"> Monday</font><span class="gmail_default" style="font-family:arial,sans-serif">, May 16h</span><font face="arial, sans-serif"> at</font><b><font face="arial, sans-serif"> </font><span style="background-color:rgb(255,255,0)"><font face="verdana, sans-serif">11:30 am CT</font></span></b></font></font></div><p style="color:rgb(80,0,80);font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;margin:0px"><font face="arial, sans-serif" color="#000000"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b><span style="background-color:rgb(255,255,0)"><br></span></b></font></font></font></p><div class="gmail_default"><font face="arial, sans-serif"><b><font color="#500050">Where: </font><font color="#000000"> </font></b><font color="#000000">Talk will be given </font><font color="#0000ff" style="font-weight:bold"><u>live, in-person</u></font><font style="color:rgb(80,0,80);font-weight:bold"> </font><font style="color:rgb(80,0,80)">at</font></font></div><p class="MsoNormal" style="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="arial, sans-serif"><font color="#500050"> </font><font color="#000000"> TTIC, 6045 S. Kenwood Avenue</font></font></p><p class="MsoNormal" style="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="arial, sans-serif" color="#000000"> 5th Floor, Room 530<b> </b></font></p><p class="MsoNormal" style="margin:0in;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="arial, sans-serif"><b><span style="color:black"><br></span></b></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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b style="color:rgb(0,0,0)">Where:</b><font color="#000000"> </font></font></font><font color="#000000">Zoom Virtual Talk</font><font color="#500050"> (</font><b style="color:rgb(80,0,80)"><a href="https://uchicagogroup.zoom.us/webinar/register/WN_QFCPyH-nSv6ovsQ_tgTwag" target="_blank"><font color="#0000ff">register in advance here</font></a></b><font color="#500050">)</font></font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="arial, sans-serif"><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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><font style="color:rgb(80,0,80)"><b>Who: </b> </font><font color="#500050" style="color:rgb(80,0,80)"> </font><font color="#000000"><font color="#500050"> </font> </font></font></font></font><font color="#000000">Elizaveta Rebrova, Princeton University</font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><br></p><div><p style="color:rgb(60,64,67);letter-spacing:0.2px;white-space:pre-wrap"><span style="color:rgb(34,34,34);letter-spacing:normal"><b>Title: </b> </span><span style="color:rgb(34,34,34);letter-spacing:normal">Modewise Methods for Tensor Compression and Recovery</span><br></p><div><b>Abstract: </b>Tensor methods are unsurprisingly in demand since lots of natural data is inherently high-order (e.g., temporal or multi-factor) and high-dimensional. It is typical to avoid developing new specialized techniques that work directly on tensors, but rather apply existent algorithms on the data reshaped into matrices or vectors. However, such structural simplification of the data can lead to loss of interpretability as well as to immense comparative memory loss. Modewise tensor maps are linear operators acting on each tensor dimension (mode) separately rather than on the vectorizations of tensors. They are efficient: they are faster and require significantly less memory than the measurements working on vectorized tensors. They are also more sophisticated and present additional mathematical challenges due to their inherent Kronecker structure. In this talk, I will discuss data-oblivious tensor dimension reduction with these modewise maps and its applications to the tensor low-rank fitting and recovery. Based on the joint work with Mark Iwen, Deanna Needell, Mike Perlmutter, and Ali Zare.</div><div><br></div><div><b>Bio:</b> Liza Rebrova is an Assistant Professor at Princeton University, ORFE Department (Operations Research and Financial Engineering). She received her Ph.D. degree in Mathematics (Non-asymptotic Random Matrix Theory) from the University of Michigan in 2018. Then, she worked as an Assistant Adjunct Professor in the Department of Mathematics at UCLA (2018-2020) and as a Postdoctoral Scholar at the Computational Research Division at Lawrence Berkeley National Laboratory (in 2020). Her research interests are in high-dimensional probability, and include developing randomized and high-dimensional methods for numerical linear algebra, compressed sensing, and the math of data.</div><p style="letter-spacing:0.2px;white-space:pre-wrap"><b style="font-family:arial,sans-serif;letter-spacing:normal"><font color="#000000">Host:</font></b><b style="color:rgb(80,0,80);font-family:arial,sans-serif;letter-spacing:normal"> </b><a href="mailto:yury@ttic.edu" target="_blank" style="font-family:arial,sans-serif;letter-spacing:normal"><b><font color="#0000ff">Yury Makarychev</font></b></a></p></div></div><div><div dir="ltr"><div dir="ltr" style="color:rgb(80,0,80)">***********************************************************************************</div></div></div></div><div class="gmail_default"><span style="font-family:arial,sans-serif"><br></span></div><div class="gmail_default"><span style="font-family:arial,sans-serif">For more information on the </span><span style="font-family:arial,sans-serif">colloquium</span><span style="font-family:arial,sans-serif"> series or to subscribe to the mailing list, please see </span><a href="http://www.ttic.edu/colloquium.php" target="_blank" style="font-family:arial,sans-serif">http://www.ttic.edu/colloquium.php</a><span style="font-family:arial,sans-serif"> </span><br></div><br></div><div class="gmail_default"><br></div></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><span style="font-family:arial,helvetica,sans-serif;font-size:x-small">Mary C. Marre</span><br></div><div><div><font face="arial, helvetica, sans-serif" size="1">Faculty Administrative Support</font></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1"><b>Toyota Technological Institute</b></font></i></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1">6045 S. Kenwood Avenue</font></i></div><div><font size="1"><i><font face="arial, helvetica, sans-serif" color="#3d85c6">Chicago, IL 60637</font></i><br></font></div><div><b><i><a href="mailto:mmarre@ttic.edu" target="_blank"><font face="arial, helvetica, sans-serif" size="1">mmarre@ttic.edu</font></a></i></b></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, May 16, 2022 at 10:30 AM Mary Marre <<a href="mailto:mmarre@ttic.edu">mmarre@ttic.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div style="font-size:small"><div><div><div><div style="color:rgb(80,0,80)"><font style="font-family:arial,sans-serif;color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><b>When:</b> </font></font><font style="color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><font face="arial, sans-serif"> Monday</font><span class="gmail_default" style="font-family:arial,sans-serif">, May 16h</span><font face="arial, sans-serif"> at</font><b><font face="arial, sans-serif"> </font><span style="background-color:rgb(255,255,0)"><font face="verdana, sans-serif">11:30 am CT</font></span></b></font></font></div><p style="color:rgb(80,0,80);font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;margin:0px"><font face="arial, sans-serif" color="#000000"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b><span style="background-color:rgb(255,255,0)"><br></span></b></font></font></font></p><div><font face="arial, sans-serif"><b><font color="#500050">Where: </font><font color="#000000"> </font></b><font color="#000000">Talk will be given </font><font color="#0000ff" style="font-weight:bold"><u>live, in-person</u></font><font style="color:rgb(80,0,80);font-weight:bold"> </font><font style="color:rgb(80,0,80)">at</font></font></div><p class="MsoNormal" style="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="arial, sans-serif"><font color="#500050"> </font><font color="#000000"> TTIC, 6045 S. Kenwood Avenue</font></font></p><p class="MsoNormal" style="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="arial, sans-serif" color="#000000"> 5th Floor, Room 530<b> </b></font></p><p class="MsoNormal" style="margin:0in;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="arial, sans-serif"><b><span style="color:black"><br></span></b></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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b style="color:rgb(0,0,0)">Where:</b><font color="#000000"> </font></font></font><font color="#000000">Zoom Virtual Talk</font><font color="#500050"> (</font><b style="color:rgb(80,0,80)"><a href="https://uchicagogroup.zoom.us/webinar/register/WN_QFCPyH-nSv6ovsQ_tgTwag" target="_blank"><font color="#0000ff">register in advance here</font></a></b><font color="#500050">)</font></font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="arial, sans-serif"><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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><font style="color:rgb(80,0,80)"><b>Who: </b> </font><font color="#500050" style="color:rgb(80,0,80)"> </font><font color="#000000"><font color="#500050"> </font> </font></font></font></font><font color="#000000">Elizaveta Rebrova, Princeton University</font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><br></p><div><p style="color:rgb(60,64,67);letter-spacing:0.2px;white-space:pre-wrap"><span style="color:rgb(34,34,34);letter-spacing:normal"><b>Title: </b> </span><span style="color:rgb(34,34,34);letter-spacing:normal">Modewise Methods for Tensor Compression and Recovery</span><br></p><div><b>Abstract: </b>Tensor methods are unsurprisingly in demand since lots of natural data is inherently high-order (e.g., temporal or multi-factor) and high-dimensional. It is typical to avoid developing new specialized techniques that work directly on tensors, but rather apply existent algorithms on the data reshaped into matrices or vectors. However, such structural simplification of the data can lead to loss of interpretability as well as to immense comparative memory loss. Modewise tensor maps are linear operators acting on each tensor dimension (mode) separately rather than on the vectorizations of tensors. They are efficient: they are faster and require significantly less memory than the measurements working on vectorized tensors. They are also more sophisticated and present additional mathematical challenges due to their inherent Kronecker structure. In this talk, I will discuss data-oblivious tensor dimension reduction with these modewise maps and its applications to the tensor low-rank fitting and recovery. Based on the joint work with Mark Iwen, Deanna Needell, Mike Perlmutter, and Ali Zare.</div><div><br></div><div><b>Bio:</b> Liza Rebrova is an Assistant Professor at Princeton University, ORFE Department (Operations Research and Financial Engineering). She received her Ph.D. degree in Mathematics (Non-asymptotic Random Matrix Theory) from the University of Michigan in 2018. Then, she worked as an Assistant Adjunct Professor in the Department of Mathematics at UCLA (2018-2020) and as a Postdoctoral Scholar at the Computational Research Division at Lawrence Berkeley National Laboratory (in 2020). Her research interests are in high-dimensional probability, and include developing randomized and high-dimensional methods for numerical linear algebra, compressed sensing, and the math of data.</div><p style="letter-spacing:0.2px;white-space:pre-wrap"><b style="font-family:arial,sans-serif;letter-spacing:normal"><font color="#000000">Host:</font></b><b style="color:rgb(80,0,80);font-family:arial,sans-serif;letter-spacing:normal"> </b><a href="mailto:yury@ttic.edu" style="font-family:arial,sans-serif;letter-spacing:normal" target="_blank"><b><font color="#0000ff">Yury Makarychev</font></b></a></p></div></div><div><div dir="ltr"><div dir="ltr" style="color:rgb(80,0,80)">***********************************************************************************</div></div></div></div><div><span style="font-family:arial,sans-serif"><br></span></div><div><span style="font-family:arial,sans-serif">For more information on the </span><span style="font-family:arial,sans-serif">colloquium</span><span style="font-family:arial,sans-serif"> series or to subscribe to the mailing list, please see </span><a href="http://www.ttic.edu/colloquium.php" style="font-family:arial,sans-serif" target="_blank">http://www.ttic.edu/colloquium.php</a><span style="font-family:arial,sans-serif"> </span><br></div><br></div><div><br></div><div><br></div><div><br></div></div><div><div dir="ltr"><div dir="ltr"><div><span style="font-family:arial,helvetica,sans-serif;font-size:x-small">Mary C. Marre</span><br></div><div><div><font face="arial, helvetica, sans-serif" size="1">Faculty Administrative Support</font></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1"><b>Toyota Technological Institute</b></font></i></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1">6045 S. Kenwood Avenue</font></i></div><div><font size="1"><i><font face="arial, helvetica, sans-serif" color="#3d85c6">Chicago, IL 60637</font></i><br></font></div><div><b><i><a href="mailto:mmarre@ttic.edu" target="_blank"><font face="arial, helvetica, sans-serif" size="1">mmarre@ttic.edu</font></a></i></b></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, May 15, 2022 at 3:27 PM Mary Marre <<a href="mailto:mmarre@ttic.edu" target="_blank">mmarre@ttic.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div style="font-size:small"><div><div><div style="color:rgb(80,0,80)"><font style="font-family:arial,sans-serif;color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><b>When:</b> </font></font><font style="color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><font face="arial, sans-serif"> Monday</font><span class="gmail_default" style="font-family:arial,sans-serif">, May 16h</span><font face="arial, sans-serif"> at</font><b><font face="arial, sans-serif"> </font><span style="background-color:rgb(255,255,0)"><font face="verdana, sans-serif">11:30 am CT</font></span></b></font></font></div><p style="color:rgb(80,0,80);font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;margin:0px"><font face="arial, sans-serif" color="#000000"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b><span style="background-color:rgb(255,255,0)"><br></span></b></font></font></font></p><div><font face="arial, sans-serif"><b><font color="#500050">Where: </font><font color="#000000"> </font></b><font color="#000000">Talk will be given </font><font color="#0000ff" style="font-weight:bold"><u>live, in-person</u></font><font style="color:rgb(80,0,80);font-weight:bold"> </font><font style="color:rgb(80,0,80)">at</font></font></div><p class="MsoNormal" style="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="arial, sans-serif"><font color="#500050"> </font><font color="#000000"> TTIC, 6045 S. Kenwood Avenue</font></font></p><p class="MsoNormal" style="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="arial, sans-serif" color="#000000"> 5th Floor, Room 530<b> </b></font></p><p class="MsoNormal" style="margin:0in;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="arial, sans-serif"><b><span style="color:black"><br></span></b></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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b style="color:rgb(0,0,0)">Where:</b><font color="#000000"> </font></font></font><font color="#000000">Zoom Virtual Talk</font><font color="#500050"> (</font><b style="color:rgb(80,0,80)"><a href="https://uchicagogroup.zoom.us/webinar/register/WN_QFCPyH-nSv6ovsQ_tgTwag" target="_blank"><font color="#0000ff">register in advance here</font></a></b><font color="#500050">)</font></font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="arial, sans-serif"><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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><font style="color:rgb(80,0,80)"><b>Who: </b> </font><font color="#500050" style="color:rgb(80,0,80)"> </font><font color="#000000"><font color="#500050"> </font> </font></font></font></font><font color="#000000">Elizaveta Rebrova, Princeton University</font></p><p class="MsoNormal" style="margin:0in 0in 0.0001pt;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><br></p><div><p style="color:rgb(60,64,67);letter-spacing:0.2px;white-space:pre-wrap"><span style="color:rgb(34,34,34);letter-spacing:normal"><b>Title: </b> </span><span style="color:rgb(34,34,34);letter-spacing:normal">Modewise Methods for Tensor Compression and Recovery</span><br></p><div><b>Abstract: </b>Tensor methods are unsurprisingly in demand since lots of natural data is inherently high-order (e.g., temporal or multi-factor) and high-dimensional. It is typical to avoid developing new specialized techniques that work directly on tensors, but rather apply existent algorithms on the data reshaped into matrices or vectors. However, such structural simplification of the data can lead to loss of interpretability as well as to immense comparative memory loss. Modewise tensor maps are linear operators acting on each tensor dimension (mode) separately rather than on the vectorizations of tensors. They are efficient: they are faster and require significantly less memory than the measurements working on vectorized tensors. They are also more sophisticated and present additional mathematical challenges due to their inherent Kronecker structure. In this talk, I will discuss data-oblivious tensor dimension reduction with these modewise maps and its applications to the tensor low-rank fitting and recovery. Based on the joint work with Mark Iwen, Deanna Needell, Mike Perlmutter, and Ali Zare.</div><div><br></div><div><b>Bio:</b> Liza Rebrova is an Assistant Professor at Princeton University, ORFE Department (Operations Research and Financial Engineering). She received her Ph.D. degree in Mathematics (Non-asymptotic Random Matrix Theory) from the University of Michigan in 2018. Then, she worked as an Assistant Adjunct Professor in the Department of Mathematics at UCLA (2018-2020) and as a Postdoctoral Scholar at the Computational Research Division at Lawrence Berkeley National Laboratory (in 2020). Her research interests are in high-dimensional probability, and include developing randomized and high-dimensional methods for numerical linear algebra, compressed sensing, and the math of data.</div><p style="letter-spacing:0.2px;white-space:pre-wrap"><b style="font-family:arial,sans-serif;letter-spacing:normal"><font color="#000000">Host:</font></b><b style="color:rgb(80,0,80);font-family:arial,sans-serif;letter-spacing:normal"> </b><a href="mailto:yury@ttic.edu" style="font-family:arial,sans-serif;letter-spacing:normal" target="_blank"><b><font color="#0000ff">Yury Makarychev</font></b></a></p></div></div><div><div dir="ltr"><div dir="ltr" style="color:rgb(80,0,80)">***********************************************************************************</div></div></div></div><div><span style="font-family:arial,sans-serif"><br></span></div><div><span style="font-family:arial,sans-serif">For more information on the </span><span style="font-family:arial,sans-serif">colloquium</span><span style="font-family:arial,sans-serif"> series or to subscribe to the mailing list, please see </span><a href="http://www.ttic.edu/colloquium.php" style="font-family:arial,sans-serif" target="_blank">http://www.ttic.edu/colloquium.php</a><span style="font-family:arial,sans-serif"> </span><br></div><br></div><div style="font-size:small"><br></div><div style="font-size:small"><br></div><div style="font-size:small"><br></div><div style="font-size:small"><br></div><div style="font-size:small"><br></div><div><div dir="ltr"><div dir="ltr"><div><span style="font-family:arial,helvetica,sans-serif;font-size:x-small">Mary C. Marre</span><br></div><div><div><font face="arial, helvetica, sans-serif" size="1">Faculty Administrative Support</font></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1"><b>Toyota Technological Institute</b></font></i></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1">6045 S. Kenwood Avenue</font></i></div><div><font size="1"><i><font face="arial, helvetica, sans-serif" color="#3d85c6">Chicago, IL 60637</font></i><br></font></div><div><b><i><a href="mailto:mmarre@ttic.edu" target="_blank"><font face="arial, helvetica, sans-serif" size="1">mmarre@ttic.edu</font></a></i></b></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, May 9, 2022 at 4:20 PM Mary Marre <<a href="mailto:mmarre@ttic.edu" target="_blank">mmarre@ttic.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div style="font-size:small"><div><div style="color:rgb(80,0,80)"><font style="font-family:arial,sans-serif;color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><b>When:</b> </font></font><font style="color:rgb(0,0,0);vertical-align:inherit"><font style="vertical-align:inherit"><font face="arial, sans-serif"> Monday</font><span class="gmail_default" style="font-family:arial,sans-serif">, May 16h</span><font face="arial, sans-serif"> at</font><b><font face="arial, sans-serif"> </font><span style="background-color:rgb(255,255,0)"><font face="verdana, sans-serif">11:30 am CT</font></span></b></font></font></div><p style="color:rgb(80,0,80);font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;margin:0px"><font face="arial, sans-serif" color="#000000"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b><span style="background-color:rgb(255,255,0)"><br></span></b></font></font></font></p><div><font face="arial, sans-serif"><b><font color="#500050">Where: </font><font color="#000000"> </font></b><font color="#000000"><span>Talk</span> will be given </font><font color="#0000ff" style="font-weight:bold"><u>live, in-person</u></font><font color="#0000ff" style="color:rgb(80,0,80);font-weight:bold"> </font><font color="#000000" style="color:rgb(80,0,80)">at</font></font></div><p class="MsoNormal" style="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="arial, sans-serif"><font color="#500050"> </font><font color="#000000"> TTIC, 6045 S. Kenwood Avenue</font></font></p><p class="MsoNormal" style="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="arial, sans-serif" color="#000000"> 5th Floor, Room 530<b> </b></font></p><p class="MsoNormal" style="color:rgb(80,0,80);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="arial, sans-serif"><b><span style="color:black"><br></span></b></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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><b style="color:rgb(0,0,0)">Where:</b><font color="#000000"> </font></font></font><font color="#000000">Zoom Virtual <span>Talk</span></font><font color="#500050"> (</font><b style="color:rgb(80,0,80)"><a href="https://uchicagogroup.zoom.us/webinar/register/WN_QFCPyH-nSv6ovsQ_tgTwag" target="_blank"><font color="#0000ff">register in advance here</font></a></b><font color="#500050">)</font></font></p><p class="MsoNormal" style="color:rgb(80,0,80);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="arial, sans-serif"><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="arial, sans-serif"><font style="vertical-align:inherit"><font style="vertical-align:inherit"><font color="#000000" style="color:rgb(80,0,80)"><b>Who: </b> </font><font color="#500050" style="color:rgb(80,0,80)"> </font><font color="#000000"><font color="#500050"> </font> </font></font></font></font><font color="#000000">Elizaveta Rebrova, Princeton University</font></p><p class="MsoNormal" style="color:rgb(80,0,80);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"><br></p><div><p style="color:rgb(60,64,67);letter-spacing:0.2px;white-space:pre-wrap"><span style="color:rgb(34,34,34);letter-spacing:normal"><b>Title: </b> </span><span style="color:rgb(34,34,34);letter-spacing:normal">Modewise Methods for Tensor Compression and Recovery</span><br></p><div style="color:rgb(34,34,34)"><b>Abstract: </b>Tensor methods are unsurprisingly in demand since lots of natural data is inherently high-order (e.g., temporal or multi-factor) and high-dimensional. It is typical to avoid developing new specialized techniques that work directly on tensors, but rather apply existent algorithms on the data reshaped into matrices or vectors. However, such structural simplification of the data can lead to loss of interpretability as well as to immense comparative memory loss. Modewise tensor maps are linear operators acting on each tensor dimension (mode) separately rather than on the vectorizations of tensors. They are efficient: they are faster and require significantly less memory than the measurements working on vectorized tensors. They are also more sophisticated and present additional mathematical challenges due to their inherent Kronecker structure. In this talk, I will discuss data-oblivious tensor dimension reduction with these modewise maps and its applications to the tensor low-rank fitting and recovery. Based on the joint work with Mark Iwen, Deanna Needell, Mike Perlmutter, and Ali Zare.</div><div style="color:rgb(34,34,34)"><br></div><div style="color:rgb(34,34,34)"><b>Bio:</b> Liza Rebrova is an Assistant Professor at Princeton University, ORFE Department (Operations Research and Financial Engineering). She received her Ph.D. degree in Mathematics (Non-asymptotic Random Matrix Theory) from the University of Michigan in 2018. Then, she worked as an Assistant Adjunct Professor in the Department of Mathematics at UCLA (2018-2020) and as a Postdoctoral Scholar at the Computational Research Division at Lawrence Berkeley National Laboratory (in 2020). Her research interests are in high-dimensional probability, and include developing randomized and high-dimensional methods for numerical linear algebra, compressed sensing, and the math of data.</div><p style="letter-spacing:0.2px;white-space:pre-wrap"><b style="font-family:arial,sans-serif;letter-spacing:normal"><font color="#000000">Host:</font></b><b style="color:rgb(80,0,80);font-family:arial,sans-serif;letter-spacing:normal"> </b><a href="mailto:yury@ttic.edu" style="font-family:arial,sans-serif;letter-spacing:normal" target="_blank"><b><font color="#0000ff">Yury Makarychev</font></b></a></p></div></div><div><div dir="ltr"><div dir="ltr" style="color:rgb(80,0,80)">***********************************************************************************</div></div></div></div><div style="font-size:small"><span style="font-family:arial,sans-serif"><br></span></div><div style="font-size:small"><span style="font-family:arial,sans-serif">For more information on the </span><span style="font-family:arial,sans-serif">colloquium</span><span style="font-family:arial,sans-serif"> series or to subscribe to the mailing list, please see </span><a href="http://www.ttic.edu/colloquium.php" style="font-family:arial,sans-serif" target="_blank">http://www.ttic.edu/<span>colloquium</span>.php</a><span style="font-family:arial,sans-serif"> </span><br></div><div style="font-size:small"><span style="font-family:arial,sans-serif"><br></span></div><div style="font-size:small"><span style="font-family:arial,sans-serif"><br></span></div><div style="font-size:small"><span style="font-family:arial,sans-serif"><br></span></div><div><div dir="ltr"><div dir="ltr"><div><span style="font-family:arial,helvetica,sans-serif;font-size:x-small">Mary C. Marre</span><br></div><div><div><font face="arial, helvetica, sans-serif" size="1">Faculty Administrative Support</font></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1"><b>Toyota Technological Institute</b></font></i></div><div><i><font face="arial, helvetica, sans-serif" color="#3d85c6" size="1">6045 S. Kenwood Avenue</font></i></div><div><font size="1"><i><font face="arial, helvetica, sans-serif" color="#3d85c6">Chicago, IL 60637</font></i><br></font></div><div><b><i><a href="mailto:mmarre@ttic.edu" target="_blank"><font face="arial, helvetica, sans-serif" size="1">mmarre@ttic.edu</font></a></i></b></div></div></div></div></div></div>
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