Ph.D. in Computer Science

M. Eng. in Electrical and Computer Engineering

B. S. in Electrical Engineering

Graduate Research Assistant, Networking and Telecommunications Group, Georgia Institute of Technology, Atlanta, GA, 08/2000-Present 

• Developing performance monitoring and overlay assignment services for the PlanetLab

• Designed and evaluated dynamic overlay routing schemes

• Designed virtual network assignment algorithms for network virtualization

• Completed Sprint-Technology Planning & Integration (TPI) supported project on end-to-end all optical service provisioning and control plan architectures

• Participated in the designing of network security schemes

Summer Intern, Telchemy Inc., Atlanta, GA, 05/2001-08/2001

• Performed objective and subjective testing for voice over IP products

• Studied the impact of packet loss location on the perceived speech quality

Research Assistant, National Laboratory of Pattern Recognition, Beijing, China, 09/1998-07/2000

• Designed biometrics personal identification algorithms based on iris, face and handwriting

• Designed the first optical iris sensor and iris recognition prototype system in China

• Developed automatic font recognition techniques based on texture image analysis

Research Assistant, Control Engineering Lab, University of Science and Technology of China, Hefei, China, 11/1994-07/1997

• Developed application software for distributed control systems

Dynamic routing in overlay Networks (08/2003-present)

The premise of this project is that overlay networks are the future direction for the evolution of the Internet, providing an open-ended spectrum of new services and capabilities, utilizing the legacy IP network infrastructure for connectivity. Specifically, we focus on the architecture, application, implementation, and experimental evaluation of what we term the network exostructure to provide novel, on-demand and evolving services utilizing the IP infrastructure as a building block.

End-to-End WDM Network (08/2001-08/2003)

The need to deliver QoS guarantees combined with advances in IP-over-optical advances networking technologies motivates consideration of End-to-End All-Optical Service Provisioning. In this scenario, the end-users (customers) would deploy the capacity provisioned within the optical networks automatically, directly and all-optically. I am currently working on issues of routing, protection, performance evaluation and optical control plane design for large-scale multi-segment WDM networks.

Mandatory Human Participation (MHP) (08/2001-05/2002)

This is a novel authentication scheme that asks the question ``are you human?'' ( instead of ``who are you?''), and upon the correct answer to this question, can prove a principal to be a human being instead of a computer program.  MHP helps solve old and new problems in computer security that existing security measures cannot address properly such as password guessing attacks, automated service and information theft, and denial of service at the application layer.

QoS issues in Voice over IP communication (05/2001-08/2001)

Packet loss is a major source of speech impairment in voice over IP applications. The objective of this project is to analyze and evaluate the impact of packet loss location on the perceived speech quality by providing the results of both objective test using PSQM and subjective tests.

Biometrics Personal Identification (09/1998-07/2000)

This project is trying to integrate the different biometric features and results of multiple classifiers to build a fusion system for personal identification. It includes research on several biometric features including face, iris, fingerprint and handwriting.

 Professional activites

 Patents and publications

1. Y. Zhu, " Routing, Resource Allocation and Network Desgin for Overlay Networks ", Ph.D. Thesis, 2006.

2. Y. Zhu, C. Dovrolis and M. Ammar, " How to be a better ISP without owning a network ", IEEE INFOCOM 2007.

3. Y. Zhu and M. Ammar, "Overlay network assignment in PlanetLab with NetFinder", College of Computing, Georgia Institute of Technology, Technical Report GT-CSS-06-11, August 2006.

4. Y. Zhu and M. Ammar, "Algorithms for Assigning Substrate Network Resources to Virtual Network Components", IEEE INFOCOM 2006.

5. Y. Zhu, C. Dovrolis and M. Ammar, "Dynamic Overlay Routing Based on Available Bandwidth Estimation: A Simulation Study", Computer Networks Journal (Elsevier), , Volume 50, Issue 6, Pages 739-876, April 13 2006.

6. Y. Zhu, A. Jukan,  M. Ammar and W. Alanqar, "End-to-End Service Provisioning in Multi-granularity Multi-domain Optical Networks", IEEE International Conference on Communications (ICC 2004), Paris, France.

7. Y. Zhu, A. Jukan and M. Ammar, " Multi-Segment Wavelength Routing in Large-Scale Optical Networks ", IEEE International Conference on Communications (ICC 2003), Anchorage, Alaska.

8. Jun Xu, Richard Lipton, Irfan Essa, Minho Sung and Yong Zhu, "Mandatory Human Participation: A New Authentication Scheme for Building Secure Systems", ICCCN 2003, Dallas, Texas.

9. Y. Zhu, A. Jukan and M. Ammar, "Performance analysis of multi-segment wavelength routing", IEEE/LEOS Summer Topical Meetings, 2002, Mont-Tremblant, Quebec, Canada.

10. Y. Zhu, T. Tan and Y. Wang, "Font Recognition Based on Global Texture Analysis", IEEE Transaction on Pattern Analysis and Machine Intelligence, vol.23, no.10, pp.1192-1200, 2001.

11. Y. Zhu, Y. Wang, and T. Tan, "Biometric Personal Identification Based on Handwriting", ICPR2000: the 15th International Conference on Pattern Recognition, pp.801-804, Barcelona, Spain.

12. Y. Zhu, Y. Wang, and T. Tan, "Biometric Personal Identification Based on Iris Pattern", ICPR2000, pp.805-808, Barcelona, Spain.

13. Y. Wang, T. Tan, and Y. Zhu, "Face Verification Based on Singular Value Decomposition and Radial Basis Function Neural Network", ACCV'2000: The 4th. Asian Conference on Computer Vision, Taipei, Taiwan, 2000.

14. Y. Zhu, Y. Wang, and T. Tan, "Font Recognition Base on Global Texture Analysis", Proc. 5th International Conference on Document Analysis and Recognition (ICDARЃf99), pp.349-352, Bangalore, India, 1999.

15. T. Tan and Y. Zhu, "A Global Texture Analysis for Automatic Font Recognition and Writer Identification", Chinese Patent Application No.99105851.8, 1999.

16. T. Tan, Y. Zhu and Y. Wang, "Personal Identification Based on Iris", Chinese Patent Application No.99110825.6, 1999.

17. T. Tan, Y. Zhu and Y. Wang, "Iris Image Acquisition System", Chinese Patent Application No.99217063.X, 1999.

18. T. Tan, Y. Wang and Y. Zhu, "Personal Identification System Based on Multi-Biometric Fusion", Chinese Patent Application No. 99126037.6, 1999.

Strong analytical and problem solving skills with innovative attitude
Solid background and experiences in computer networks, protocol/architecture design and performance evaluation, TCP/IP, multicast, network measurement, QoS routing, queuing theory, WDM routing, biometrics, pattern recognition and image processing
Knowledge of wireless/ad-hoc networks and network security and information theory
Programming and system development skills

• Languages: C, C++, Java, Matlab, Shell scripts, Perl, SQL, Visual Basic

• Operating Systems: Unix/Linux, Windows
• Techniques: TCP/IP sockets programming, object-oriented design, multi-threaded programming, discrete event simulation

• Academia Sinica President Scholarship (2000), the most prestigious scholarship from Chinese Academy of Sciences
• Outstanding Graduate Student Scholarship (1999), Chinese Academy of Sciences
• Guo Moruo Prize (1997), the highest academic honor from the University of Science and Technology of China
• Ranked 1st in the department of Automation, University of Science and Technology of China and various other scholarships (Outstanding Student Scholarship, Zhang Zongzhi Scholarship) (1992-1997)