ÿþ <HTML> <HEAD> <TITLE>Homepage of Rongrong Ji</TITLE> <META http-equiv=Content-Type content="text/html; charset=ISO-8859-1"> <link rel="shortcut icon" href="index.files/cuseas.ico"> <STYLE> body {margin: 0; border: 0; padding: 0px; border-top: #2d2a62 18px solid; } p,td {font-size: 9.5pt;color: #000;font-family: Arial; } a:link {color: #2B2EAC; text-decoration:none; } a:visited {color: #2B2EAC; text-decoration:none; } a:hover {background: #2B2EAC; color: #ffffff; text-decoration:none; } img {border-width: 1px; border-color: #000000; border-style: solid; } #menu {text-align:right;width: 300px;margin-top:0px;border-bottom:1px dotted #000; } #menu a {color:#393939;font-weight:bold;} .menulinks {line-height:1.7em; margin:0 0 0 0;} .menulink {padding:6px 8px 5px 8px; font-weight:400; margin:0 0 0 2px;} .menulink:hover {background-color:#e6e6e6; } .active {background-color:#e6e6e6; } .active:hover {background-color:#e6e6e6; } .sectiontitle{font-size: 13pt; font-weight:bold; font-family: Arial; } .talks{font-size: 7.5pt; font-weight: bold; color: #393939; font-family: Arial; } #counter img {border-width:0px;} </STYLE> </HEAD> <BODY> <TABLE cellSpacing=18 width=800 border=0 cellpadding="6" align="left" style="height: 100%;"> <TBODY><TR><TD valign="top"> <TABLE cellSpacing=7 width=700 border=0> <TBODY> <TR> <TD align="left" width=300> <img width=300 src="personal.jpg"> </TD> <TD align="left" width=400> <P><font style="font-size: 19pt" face="Tahoma">Rongrong Ji</font><BR> <br><br> <font face=arial color=#666 size=-1> Hi, this is my new homepage at Columbia University. I have been a postdoc researcher in DVMM laboratory since Normember 2010, working with Professor Shih-Fu Chang.</font><br> <br> </TD> </TR> </TBODY> </TABLE> <br> <p class=sectiontitle>Contact Information</p> <TABLE cellSpacing=7 width=500 bgcolor=#e6e6e6 border=0> <TBODY> <TR><TD align=justify> <P> PostDoc Researcher at DVMM Lab<BR> Department of Electronic Engineering, Columbia University<BR> Address: Room 712, Schapiro Research Building (CEPSR).<BR> Mail: 1312 S. W. Mudd, 500 West 120th Street, New York, NY 10027<BR> Phone: (212) 854-3105, Fax: (212) 932-9421, Mobile: 646-256-9869<BR> <b>Email: jirongrong at gmail.com or rrji at ee.columbia.edu</b><BR> -----------------------------------------------------------------------------<BR> For the reference of my previous contact information:<BR> PH.D. @ Multimedia Retrieval Group, Visual Intelligence Laboratory,<BR> Department of Computer Science, Harbin Institute of Technology<BR> Room 614, Zonghelou Building, No.92, <BR> West Dazhi Street, Harbin, 150001<BR> Phone: 86-451-86416485, Tel: 15124525618<BR> </TD></TR> </TBODY> </TABLE> <br> <p class=sectiontitle>Research Interest</p> <TABLE cellSpacing=7 width=830 bgcolor=#e6e6e6 border=0> <TBODY> <TR><TD align=justify> <P> My research interests fall in the areas of computer vision and multimedia. My recent works mainly focus on mobile visual search and compact visual descriptor, by combining computer vision, machine learning, and visual coding techniques to achieve low bit rate mobile query and recognition.<BR> </TD></TR> </TBODY> </TABLE> <br> <p class=sectiontitle>Education and Research Experiences</p> <TABLE cellSpacing=7 width=950 bgcolor=#e6e6e6 border=0> <TBODY> <TR><TD align=justify> <P> <LI>PostDoc Researcher, Digital Video and Multimedia Lab, working with Professor Shih-Fu Chang, Normber, 2010 - now<BR> <LI>Visiting Student: Institute of Digital Media, Peking University, worked with Professor Ling-Yu Duan and Wen Gao, June, 2010  Normber 2010<BR> <LI>Visiting Student: Texas University at San Antonio, worked with Professor Qi Tian, April, 2010  June, 2010<BR> <LI>Research Intern: Microsoft Research Asia, worked with Dr. Xing Xie, August, 2007 - September, 2008<BR> <LI>Research Assistant: Visual Intelligence Laboratory, worked with Professor Hongxun Yao, September, 2005  December 2010<BR> <LI>PH. D.: Department of Computer Science and Technology, Harbin Institute of Technology, Sep 2005  December 2010<BR> <LI>Bachelor: Department of Computer Science and Technology, Harbin Engineering University, Sep 2001 - July 2005<BR> </TD></TR> </TBODY> </TABLE> <br> <p class=sectiontitle>Selected Publications</p> <TABLE cellSpacing=7 width=700 bgcolor=#e6e6e6 border=0> <TBODY> <TR><TD align=justify> <div class="pub" id="ijcv11:compactdescriptor"> <UL> <LI>Rongrong Ji, Ling-Yu Duan, Jie Chen, Hongxun Yao, Junsong Yuan, Yong Rui, and Wen Gao.<BR> <b>Location Discriminative Vocabulary Coding for Mobile Landmark Search</b><BR> International Journal of Computer Vision (IJCV), Accept, 2011. </UL> </div> <div class="pub" id="tip11:codebookcompression"> <UL> <LI>Rongrong Ji, Hongxun Yao, Wei Liu, Xiaoshuai Sun, and Qi Tian.<BR> <b>Task Dependent Visual Codebook Compression</b> <BR> IEEE Transactions on Image Processing (TIP), Accept, 2011. </UL> </div> <!--<div class="pub" id="tip:3d"> <UL> <LI>Yue Gao, Meng Wang, Rongrong Ji, Dacheng Tao, Qionghai Dai, and Naiyao Zhang.<BR> <b>3D Object Retrieval and Recognition with Constructive Hypergraph Analysis</b> <BR> IEEE Transactions on Image Processing (TIP), Accept, 2011. </UL> </div> --> <div class="pub" id="pr11:action"> <UL CLASS="PUB"> <LI>Rongrong Ji, Hongxun Yao, and Xiaoshuai Sun.<BR> <b>Actor-Independent Action Search Using Spatiotemporal Vocabulary with Appearance Hashing</b> <BR> Pattern Recognition (PR), vol. 44 no. 3, pp. 624-638, 2011. </UL> </div> <div class="pub" id="tomccap11:mining"> <UL> <LI>Rongrong Ji, Bineng Zhong, Hongxun Yao, and Qi Tian.<BR> <b>Mining City Landmarks by Modeling Reconstruction Sparsity</b> <BR> ACM Transactions on Multimedia Computing, <BR> Communications and Applications (TOMCCAP), Accept, 2011. </UL> </div> <div class="pub" id="ieeemm:vocbaulary"> <UL CLASS="PUB"> <LI>Rongrong Ji, Hongxun Yao, Xing Xie, and Qi Tian.<BR> <b>Vocabulary Hierarchy Optimization and Transfer for Scalable Image Search</b> <BR> IEEE Multimedia Magazine (IEEE MM), <BR> Special Issue on Visual Content Identification and Search, Accept, 2011. </UL> </div> <div class="pub" id="tist11:context"> <UL> <LI>Rongrong Ji, Hongxun Yao, Xiaoshuai Sun, Pengfei Xu, Xianming Liu, and Qi Tian.<BR> <b>Context-aware Semi-Local Feature Detector</b> <BR> ACM Transactions on Intelligent System and Technology (TIST), Accept, 2011. </UL> </div> <div class="pub" id="ijcai11:compactdescriptor"> <UL> <LI>Rongrong Ji, Ling-Yu Duan, Jie Chen, Hongxun Yao, and Wen Gao.<BR> <b>Learning Compact Visual Descriptor for Low Bit Rate Mobile Landmark Search</b> <BR> International Joint Conference of Artificial Intelligence (IJCAI), pp. 2456-2463, 2011. </UL> </div> <div class="pub" id="aaai11:matrix"> <UL> <LI>Yi Yang, Heng Tao Shen, Feiping Nie, Rongrong Ji, and Xiaofang Zhou.<BR> <b>Nonnegative Spectral Clustering with Discriminative Regularization</b> <BR> Twenty-Fifth Conference on Artificial Intelligence (AAAI), Accept, 2011. </UL> </div> <div class="pub" id="mm11:multichannel"> <UL> <LI>Rongrong Ji, Ling-Yu Duan, Jie Chen, Hongxun Yao, Yong Rui, Shih-Fu Chang, and Wen Gao.<BR> <b>Towards Low Bit Rate Mobile Visual Search with Multiple Channel Coding</b> <BR> ACM Multimedia (MM), Full Paper, Oral, 2011. </UL> </div> <div class="pub" id="mm11:aqs"> <UL> <LI>Felix X. Yu, Rongrong Ji, and Shih-Fu Chang.<BR> <b>Active Query Sensing</b> <BR> ACM Multimedia (MM), Full Paper, Oral, 2011 (Best Paper Award). </UL> </div> <div class="pub" id="mm11:transfer"> <UL> <LI>Xianming Liu, Hongxun Yao, Rongrong Ji, and Qi Tian.<BR> <b>Learning Heterogeneous Data for Hierarchical Web Video Classification</b> <BR> ACM Multimedia (MM), Full Paper, Oral, 2011. </UL> </div> <div class="pub" id="cvpr10:semanticembedding"> <UL> <LI>Rongrong Ji, Hongxun Yao, Xiaoshuai Sun, Bineng Zhong, and Wen Gao.<BR> <B>Towards Semantic Embedding in Visual Vocabulary</B><BR> IEEE International Conference of Computer Vision and Pattern Recognition (CVPR), Oral, 2010. </UL> </div> <div class="pub" id="cvpr10:weakly"> <UL> <LI>Bineng Zhong, Hongxun Yao, Rongrong Ji, Xiaotong Yuan, Shaohui Liu, and Wen Gao.<BR> <B>Visual Tracking via Weakly Supervised Learning from Multiple Imperfect Oracles</B> <BR> IEEE International Conference of Computer Vision and Pattern Recognition (CVPR), 2010. </UL> </div> <div class="pub" id="cvpr11:tracking"> <UL> <LI>Dawei Liang, Qingming Huang, Hongxun Yao, Shuqiang Jiang, Rongrong Ji, and Wen Gao.<BR> <B>Novel Observation Model for Probabilistic Object Tracking</B> <BR> IEEE International Conference of Computer Vision and Pattern Recognition (CVPR), 2010. </UL> </div> <div class="pub" id="cvpr09:hierarchy"> <UL> <LI>Rongrong Ji, Xing Xie, Hongxun Yao, and Wei-Ying Ma.<BR> <b>Hierarchical Optimization of Visual Vocabulary for Effective and Transferable Retrieval</b> <BR> IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), 2009. </UL> </div> <div class="pub" id="mm09:landmark"> <UL> <LI>Rongrong Ji, Xing Xie, Hongxun Yao, Wei-Ying Ma.<BR> <b>Mining City Landmarks from Blogs by Graph Modeling</b> <BR> ACM Multimedia (MM), Full Paper, 2009. </UL> </div> </TD></TR> </TBODY> </TABLE> <br> <p class=sectiontitle>Academic Sevices</p> <TABLE cellSpacing=7 width=600 bgcolor=#e6e6e6 border=0> <TBODY> <TR><TD align=justify> <LI><b>Associate Editor</b><BR> International Journal on Computer Application<BR> <BR> <LI><b>Guest Editor</b><BR> International Journal on Computer Application Special Issue on Image Processing and Analysis<BR> <BR> <LI><b>Section and Special Section Chair</b><BR> ACM International Conference on Internet Multimedia Computing and Service, 2010<BR> IEEE International Conference on Multimedia and Expo, 2008<BR> International Conference on Pervasive Computing, Signal Processing and Applications, 2011<BR> <BR> <LI><b>Invited Speaker</b><BR> International Workshop on Computer Vision @ SIAT<BR> Doctoral Consortium, CVPR 2010<BR> <BR> <LI><b>Program Committee Member</b><BR> ACM Multimedia, 2011<BR> Eighth IEEE Workshop on Embedded Vision, 2012<BR> Seventh IEEE Workshop on Embedded Computer Vision, 2011<BR> IEEE Conference on Science and Social-science Research, 2010<BR> International Symposium on Humanities, Science & Engineering Research 2010<BR> <BR> <LI><b>Journal Reviewer</b><BR> IEEE Signal Processing Magazine<BR> ACM Transactions on Multimedia Computing, Communication and Application<BR> IEEE Transactions on Multimedia<BR> International Journal of Multimedia<BR> IEEE Transactions on Knowledge and Data Engineering<BR> Pattern Recognition <BR> IEEE Transactions on Circuits and Systems for Video Technology<BR> IEEE Transactions on System man and Cybernetics Part B<BR> Pattern Recognition<BR> International Journal on Visual Comm. and Image Rep<BR> Computer Vision and Image Understanding<BR> ACM Multimedia Systems<BR> Information Science<BR> Neurocomputing<BR> <BR> <LI><b>Conference Reviewer</b><BR> ACM Multimedia (MM) 2011<BR> ACM Multimedia (MM) 2010<BR> World Wide Web Conference (WWW) 2010 <BR> ACM Conference on Mobile and Ubiquitous Multimedia (MUM) 2010<BR> ACM Conference on Geographical Information Systems (GIS) 2010<BR> ACM International Conference on Multimodal Interface (ICMI) 2010<BR> Pacific-Rim Symposium on Image and Video Technology (PSIVT) 2010<BR> International Conference on Internet Multimedia Computing and Service (ICIMCS) 2010<BR> International Conference on Multimodal Interface (ICMI) 2010<BR> Embedded Computer Vision Workshop (ICCV Workshop) 2009<BR> ACM Multimedia (MM) 2008<BR> ACM Conference on Mobile Data Management (MDM) 2008<BR> IEEE Conference on Human Computer Interaction (HCI) 2008<BR> ACM Conference on Mobile and Ubiquitous Multimedia (MUM) 2008<BR> </TD></TR> </TBODY> </TABLE> <br> <p class=sectiontitle>Awards</p> <TABLE cellSpacing=7 width=600 bgcolor=#e6e6e6 border=0> <TBODY> <TR><TD align=justify> 2011 ACM Multimedia Best Paper Award<BR> 2010 CVPR Doctoral Consortium Award<BR> 2009 Ongoing Excellent PH.D. Thesis Award of HIT<BR> 2009, Advanced Individual, Joint Research & Development Laboratory<BR> 2008 Tencent Ph.D Fellowship<BR> 2007 Microsoft Fellowship<BR> 2007 Best Graduate of Technology and Industry for National Defense<BR> 2007 Best Graduate of Harbin Institute of Technology<BR> 2006 Heqin Scholarship of HIT<BR> 2005 10 Best Student Candidate of HIT (The only candidate from CS)<BR> 2005 Best Graduate of Technology and Industry for National Defense<BR> 2005 Best Graduate of Heilongjiang Province<BR> </TD></TR> </TBODY> </TABLE> <p><span lang=EN-US><a href="http://www3.clustrmaps.com/counter/maps.php?url=http://vilab.hit.edu.cn/~rrji/"><span style='mso-no-proof:yes;text-decoration:none;text-underline:none'><img border=0 width=160 height=106 id="_x0000_i1025" src="http://www3.clustrmaps.com/counter/index2.php?url=http://vilab.hit.edu.cn/~rrji/" alt="Locations of visitors to this page"></span></a></span></p> <HR color="#000" size="5"> <font style="font-size: 7pt" face="Arial"> &copy; Rongrong Ji - Last modified on Novermber 6, 2011 </font> </TD></TR></TBODY></TABLE> </BODY></HTML>