http://www2.math.binghamton.edu/ 2026-06-30T04:45:49-04:00 FeedCreator 1.7.2-ppt DokuWiki 2015-03-24T09:46:26-04:00 2015-03-24T09:46:26-04:00 http://www2.math.binghamton.edu/p/people/qiao/correspondence

<p> Chong, see below: </p> <p> \begin{align} \sup_{\alpha:|\alpha|\le 1} \sum_{i}\epsilon_i\left(\sum_j \alpha_j K_{ji}\right)=&amp;\sup_{\alpha:|\alpha|\le 1}\epsilon&#039;K\alpha \\ =&amp;\sup_j |(\epsilon&#039;K)_j|\\ =&amp; \sup_j \sum_j K_{ji}|\epsilon_i| \end{align} </p> <p> So if $\epsilon_i$ are all positive, this is correct. </p> <p> If $\epsilon_i$ are all negative, then it should be $\sup_j [-\sum_j K_{ji}\epsilon_i]$ </p>

2026-06-29T05:11:29-04:00 2026-06-29T05:11:29-04:00 http://www2.math.binghamton.edu/p/people/qiao/start

<div class="table sectionedit1"><table class="inline"> <tr class="row0"> <td class="col0"> <!-- EDIT2 PLUGIN_WRAP_START [0-] --><div class="plugin_wrap"> <p> <a href="http://www2.math.binghamton.edu/lib/exe/fetch.php?hash=009f0b&amp;media=http%3A%2F%2Fpeople.math.binghamton.edu%2Fimages%2F%2Ffaculty%2Fqiao.jpg" class="media" title="http://people.math.binghamton.edu/images//faculty/qiao.jpg"><img src="http://www2.math.binghamton.edu/lib/exe/fetch.php?hash=009f0b&amp;w=220&amp;h=260&amp;tok=cf1168&amp;media=http%3A%2F%2Fpeople.math.binghamton.edu%2Fimages%2F%2Ffaculty%2Fqiao.jpg" class="media" title="qiao.jpg" alt="qiao.jpg" width="220" height="260" /></a> </p> </div><!-- EDIT3 PLUGIN_WRAP_END [0-] --></td><td class="col1"> <!-- EDIT4 PLUGIN_WRAP_START [0-] --><div class="plugin_wrap"><!-- EDIT6 PLUGIN_WRAP_START [0-] --><div class="wrap_centeralign plugin_wrap"> <h2 class="sectionedit8" id="xingye_qiao">Xingye Qiao</h2> <!-- EDIT8 SECTION "Xingye Qiao" [1622-] --></div><!-- EDIT7 PLUGIN_WRAP_END [0-] --> <p> Professor and Chair <br/> Ph.D., 2010, University of North Carolina at Chapel Hill <br/> At Binghamton since 2010 <br/> <strong>Areas of Interest:</strong> Statistics, machine learning, causal inference <br/> <a href="http://www2.math.binghamton.edu/p/research#qiao" class="wikilink1" title="research"> Summary of research interests </a> <br/> </p> <!-- EDIT9 PLUGIN_WRAP_START [0-] --><div class="plugin_wrap"><div class="table sectionedit11"><table class="inline"> <tr class="row0"> <td class="col0"> <strong>E-mail:</strong> </td><td class="col1"> xqiao@binghamton.edu, qiao@math.binghamton.edu </td> </tr> <tr class="row1"> <td class="col0 leftalign"> <strong>Office:</strong> </td><td class="col1 leftalign"> WH 122 </td> </tr> <tr class="row2"> <td class="col0 leftalign"> <strong>Phone:</strong> </td><td class="col1 leftalign"> (607) 777-2540 </td> </tr> <tr class="row3"> <td class="col0 leftalign"> <strong>Fax:</strong> </td><td class="col1 leftalign"> (607) 777-2450 </td> </tr> </table></div> <!-- EDIT11 TABLE [1903-2091] --></div><!-- EDIT10 PLUGIN_WRAP_END [0-] --></div><!-- EDIT5 PLUGIN_WRAP_END [0-] --></td> </tr> </table></div> <!-- EDIT1 TABLE [1504-2110] --><ul> <li class="level1"><div class="li"> <strong>Office hours:</strong> </div> <ul> <li class="level2"><div class="li"> WH 122 W: 10:00 - 11:00 <br/> </div> </li> </ul> </li> <li class="level1"><div class="li"> <strong>Courses:</strong></div> <ul> <li class="level2"><div class="li"> <strong>Fall 2026</strong> <br/> <br/> <!-- EDIT12 PLUGIN_WRAP_START [0-] --><div class="wrap_indent plugin_wrap" style="width:85%;"><div class="table sectionedit14"><table class="inline"> <tr class="row0"> <td class="col0"> Math 534 </td><td class="col1"> Section 01 :</td><td class="col2"> Practical Data Analysis </td> </tr> <tr class="row1"> <td class="col0"> </td><td class="col1">TR 9:45 - 11:15 </td><td class="col2"> WH-100E </td> </tr> </table></div> <!-- EDIT14 TABLE [2233-2316] --></div><!-- EDIT13 PLUGIN_WRAP_END [0-] --></div> </li> </ul> </li> <li class="level1"><div class="li"> <strong>Ph. D. Students:</strong></div> <ul> <li class="level2"><div class="li"> Baozhen Wang, Spring, 2025 <br/> <strong>Thesis:</strong> Conformal Prediction Methods for Distribution Shifts &amp; Casual Effect Estimation</div> </li> <li class="level2"><div class="li"> Xinhai Zhang, Summer, 2025 <br/> <strong>Thesis:</strong> Identification &amp; Estimation of Conditional Average Treatment Effects under Unmeasured Confounding with Instrumental Variables</div> </li> <li class="level2"><div class="li"> Zhou Wang, Summer, 2024 <br/> <strong>Thesis:</strong> Set-valued Classification and Conformal Prediction in Out-of-distribution Detection and Bandit Feedback Settings</div> </li> <li class="level2"><div class="li"> Haomiao Meng, Spring, 2020 <br/> <strong>Thesis:</strong> Machine Learning Methods on Selected Topics of Precision Medicine</div> </li> <li class="level2"><div class="li"> Chen Liang, Fall, 2019 (Co-advisor Ganggang Xu) <br/> <strong>Thesis:</strong> Goodness-of-fit Tests for Spatial Cluster Point Process Models</div> </li> <li class="level2"><div class="li"> Wenbo Wang, Spring, 2019 <br/> <strong>Thesis:</strong> Set-Valued Classification Via Confidence Set Learning</div> </li> <li class="level2"><div class="li"> Lin Yao, Spring, 2019 (Co-advisor Ganggang Xu) <br/> <strong>Thesis:</strong> James-Stein-Type Optimal Weight Choice for Frequentist Model Average Estimator</div> </li> <li class="level2"><div class="li"> Qiyi Lu, Fall, 2015 <br/> <strong>Thesis:</strong> Learning Partially Labeled Data in the High-dimensional, Low-sample Size Setting</div> </li> </ul> </li> </ul> <hr /> <p> I am also the chair of the Steering Committee of the <a href="https://www.binghamton.edu/transdisciplinary-areas-of-excellence/data-science/index.html" class="urlextern" title="https://www.binghamton.edu/transdisciplinary-areas-of-excellence/data-science/index.html">Data Science Transdisciplinary Area of Excellence</a> at Binghamton University. Visit our <a href="https://www.binghamton.edu/transdisciplinary-areas-of-excellence/data-science/index.html" class="urlextern" title="https://www.binghamton.edu/transdisciplinary-areas-of-excellence/data-science/index.html">website</a> to learn more about Data Science at Binghamton University. </p> <p> Here&#039;s a link to my <a href="http://people.math.binghamton.edu/qiao" class="urlextern" title="http://people.math.binghamton.edu/qiao">personal web page</a> with more information. </p>