I am a Ph.D. candidate in the Department of Electrical and Computer Engineering at the University of Maryland. My research focus on computer vision, machine learning, and pattern recognition, and their broad range of applications in large-scale data processing and data mining. My advisors are Dr. Rama Chellappa and Dr. David Doermann.

I interned at Google in 2009 and worked at Yahoo! Search and Advertising Sciences in 2008. In 2006, I worked at IBM Almaden Research Center as research intern.

• Software Engineering Intern, Google, May - September 2009.
• Software Engineering Intern, Intent Mining Through Clickstream Data Analysis, Yahoo! Search and Advertising Sciences, Mentor: Gilad Mishne, June - October 2008.
• Research Intern, Relevant Named Entity Extraction from Unstructured Document Images, IBM Almaden Research Center, Mentor: Vikas Krishna, June - September 2006.
• Core Doclib developer, in collaboration with Booz | Allen | Hamilton, June 2004 - August 2005.
• Research assistant, Institute of Advanced Computer Studies, University of Maryland, June 2004 - Present.
• Teaching assistant, Department of ECE, University of Maryland, September 2004 - May 2005.
• Systems Specialist and Technical Solution Architect, IBM Global Services, IBM Singapore, July 2001 - December 2003.
• Software Engineering Intern, Software Group, Motorola Singapore Design Center, Mentor: Ngai Kim Hoong, January - June 2000.

• Learning Session Context Models to Enrich Web Search Ranking
  Guangyu Zhu and Gilad Mishne
  Under review for ACM Transactions on the Web.
• Logo Detection and Matching for Document Image Retrieval
  Guangyu Zhu and David Doermann
  Under review for International Journal on Document Analysis and Recognition.
• Signature Detection and Matching for Document Image Retrieval
  Guangyu Zhu, Yefeng Zheng, David Doermann and Stefan Jaeger
  IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 31, no. 11, pp. 2015-2031, 2009.
• Language Identification for Handwritten Document Images Using A Shape Codebook
  Guangyu Zhu, Xiaodong Yu, Yi Li and David Doermann
  Pattern Recognition, vol. 42, no. 12, pp. 3184-3191, 2009.
• Wavelength Assignment Algorithms in SONET/WDM Ring Networks
  Guangyu Zhu, Fei Yuan and H. Ghafouri-Shiraz
  Journal of Optical Communication, vol. 23, pp. 100-106, 2002.
• Effective Wavelength Assignment Algorithms for Optimizing Design Costs in SONET/WDM Rings
  H. Ghafouri-Shiraz, Guangyu Zhu and Fei Yuan
  Journal of Lightwave Technology, vol. 19, pp. 1427-1439, 2001.
• Effective Circle Construction Algorithms for Minimizing Wavelength Requirement in WDM Rings
  Guangyu Zhu, Fei Yuan and H. Ghafouri-Shiraz
  Microwave & Optical Technology Letters, vol. 30, no. 4, pp. 221-225, 2001.

• Mining Rich Session Context to Improve Web Search
  Guangyu Zhu and Gilad Mishne
  in Proceedings of 15th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD 2009), Paris, France, 2009. (Research track, full presentation)
• Logo Matching for Document Image Retrieval
  Guangyu Zhu and David Doermann
  in Proceedings of 10th International Conference on Document Analysis and Recognition (ICDAR 2009), Barcelona, Spain, 2009. (Oral Presentation)
• Learning Visual Shape Lexicon for Document Image Content Recognition
  Guangyu Zhu, Xiaodong Yu, Yi Li and David Doermann
  in Proceedings of 10th European Conference on Computer Vision (ECCV 2008).
• Signature-based Document Image Retrieval
  Guangyu Zhu, Yefeng Zheng and David Doermann
  in Proceedings of 10th European Conference on Computer Vision (ECCV 2008).
• Unconstrained Language Identification Using A Shape Codebook
  Guangyu Zhu, Xiaodong Yu, Yi Li and David Doermann
  in Proceedings of 11th International Conference on Frontiers in Handwriting Recognition (ICFHR 2008), Montreal, Canada, August 2008 (Oral Presentation).
• Extracting Relevant Named Entities for Automated Expense Reimbursement
  Guangyu Zhu, Timothy J. Bethea and Vikas Krishna
  in Proceedings of 13th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD 2007), San Jose, CA, August 2007 (Industrial track, full presentation)
  (Presentation Slides) (Full Paper) (Video)
• Multi-scale Structural Saliency for Signature Detection
  Guangyu Zhu, Yefeng Zheng, David Doermann and Stefan Jaeger
  in Proceedings of IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2007), Minneapolis, MN, June 2007
  (Full Paper) (Poster) (Tobacco800 Database) (Maryland Arabic Database)
• Automatic Document Logo Detection
  Guangyu Zhu and David Doermann
  in Proceedings of 9th International Conference on Document Analysis and Recognition (ICDAR 2007), Curitiba, Brazil, 2007 (Oral Presentation)
  (Presentation Slides) (Full Paper) (Tobacco800 Database)
• A Robust Stamp Detection Framework on Degraded Documents
  Guangyu Zhu, Stefan Jaeger and David Doermann
  in Proceedings of 13th Document Recognition and Retrieval Conference (DRR 2006), San Jose, CA, January 2006
  (Presentation Slides) (Full Paper)
• DOCLIB: A Software Library for Document Processing
  Stefan Jaeger, Guangyu Zhu and David Doermann
  in Proceedings of 13th Document Recognition and Retrieval Conference (DRR 2006), San Jose, CA, January 2006
  (Presentation Slides) (Full Paper) (Demo)
• DOCLIB: A Document Processing Research Tool
  Kevin Chen, Stefan Jaeger, Guangyu Zhu and David Doermann
  in Proceedings of 2005 Symposium on Document Image Understanding Technology (SDIUT 2005), College Park, MD, November 2005
  (Presentation Slides) (Full Paper)

• Extracting Relevant Named Entities for Automated Expense Reimbursement
  Guangyu Zhu, Timothy J. Bethea and Vikas Krishna
  Invited for demo on 13th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD 2007), San Jose, CA, August 2007 (Photo)
• Detecting and Extracting Stamps from Document Image Retrieval
  2005 Symposium on Document Image Understanding Technology (SDIUT 2005), College Park, MD, November 2005

• KDD Travel Grant from Yahoo! Labs, 2009
• Yahoo! Patent Inventor Award, 2008
• ACM SIGKDD Student Travel Award, 2007
• Best Student Paper Candidate, ICDAR 2007
• Jacob K. Goldhaber Travel Award, 2007
• UMIACS Graduate Research Scholarship, 2004 - present
• A*STAR (National Science & Technology Board of Singapore) Scholarship, 2003
• Singapore Ministry of Education Scholarship, 1997 - 2001
• Excellent Accomplishment Award from Motorola Electronics, 2001
• First Prize Winner in the First NTU Technopreneurship Competition, 1999

• Reviewer for Information Sciences, IJIG, IJDAR, ICDAR, ICPR, ICFHR, and CVPR.
• Conference volunteer for KDD 2007.