Engineer Mechanical

HAO ZHANG ********@*********.***

Education

University of California at Berkeley, Berkeley, CA Fall 2006 onwards

Ph.D. (expected in May 2012) and M.Sc. in Electrical Engineering, GPA 4.0/4.0

Designated Emphasis in Communication, Computation and Statistics.

Thesis topic: proposed and implemented a large-scale distributed video streaming architecture that optimizes storage

codes, rate allocation and topology building. The new system saves storage and bandwidth by up to 40% over traditional

systems.

M.A. in Statistics, GPA 4.0/4.0

Relavent courses: statistical learning theory, practical machine learning, applied statistical models, statistical computing,

Markov Chain Monte Carlo, advanced statistics, theoretical statistics.

Certificate in Management of Technology, GPA 3.7/4.0

Joint MBA and Engineering program; relavent courses include accounting, finance, management of technology, marketing,

management of new product development, and organizational behavior.

Tsinghua University, Beijing, P.R.China Fall 2002 Fall 2006

B.E. in Electronic Engineering, GPA 92/100

Skills

Skilled in C/C++, Python, Java, Flex, HTML, MATLAB and R; basic experience in Perl, SQL and assembly languages.

Proficient with Windows OS, Mac OS and UNIX OS.

Chartered Financial Analyst (CFA): Passed Level I exam in Dec 2010; passed Level II in June 2011.

Honors and Awards

Global Scholarship for Research Excellence (6 out of 300+ were awarded by Hong Kong government) CNOOC Grants, 2010

Best Student Paper Award Finalist (7 out of 1500+ papers were nominated), ICIP 2010, Hong Kong, China, 2010

Best Student Paper Award Finalist (5 out of 2300+ papers were nominated), ICASSP 2009, Taipei, Taiwan, 2009

Best Student Paper Award (4 out of 500+ papers were awarded; 700USD granted), ACM Multimedia 2008, Canada, 2008

Vodafone-US Fellowship (20 out of 1000+ applicants were awarded; annual 41kUSD granted), UC Berkeley, Fall 2006 to 2008

Best Undergraduate Thesis Award (5 out of 350+ theses were awarded), Tsinghua University, July 2006

Nortel Excellent Student Scholarship (5 out of 300+ students were awarded), Tsinghua University, July 2005

Project Experience

Arbitrage Opportunities of Equities in Different Exchanges Fall 2010 onwards

Teamed with a Berkeley Professor to explore arbitrage opportunities of equities traded at different exchanges.

Investigated equity data of 6 months and analyzed discrepancies in bid/ask spreads in the top of limit order books.

Distributed On-Demand Video Storage and Streaming Fall 2008 onwards

Established an analytical framework and algorithms to distributively store and stream on-demand videos.

Implemented a practical large-scale system that delivers video using optimized storage code and resource allocations.

The proposed system improves over traditional video distribution system in storage, bandwidth and power by up to 40%.

Low Complexity Video Encoding with Feedback Fall 2009

Proposed an analytical model for shifting video coding complexity from light-weighted encoders to powerful decoders.

Prototyped a video codec with low encoding complexity that efficiently utilizes communication feedback.

The published work received notable attention and was rewarded Best Paper Nomination (7 out of 1500+ papers).

Bandwidth Efficient Video File Synchronization Spring 2007 - Fall 2009

Proposed first work in distortion-aware video synchronization with quantitative metrics.

Developed a Linux-based prototype of semantic-aware bandwidth efficient video file synchronization protocol.

The proposed work outperforms conventional file synchronization protocols by up to 60% in a typical setting.

Published works received a Best Paper Finalist (7 out of 1500+ papers) and a Best Paper Award (3 out of 500+ papers).

Netflix Prize Collaborative Filtering Spring 2008

Developed an interative collaborative filtering algorithm to learn video recommendations for users.

Improved the accuracy over the commercial Cinematch algorithm by 2.3%.

Recognition of Sticker on High-Speed Hybrid Cars Spring 2008

Teamed with 3 students to set up a system to detect stickers on cars using a high-speed camera and loop sensing detectors.

Applied image processing, computer vision and machine learning techniques to enable automated sticker count.

HMM-based Sports Video Classification using Simple Features Fall 2007

Extracted simple features as the observations in an HMM model.

Applied Gaussian mixtures and kernel density estimation as emission probabilities for classification.

Obtained 100% classication rate over 20 test videos and a training database of 20 videos in 4 classes.

3D Human FaceRecognition Spring 2006

Smoothed and segmented 15,000 3D raw data of human faces, and eliminated outliers.

Developed an iterative closest point based dynamic programming algorithm that helps face recognition in 3D space.

Benchmarked the proposed algorithm on to test its robustness on pose, facial expression and scale.

Intelligent Robot Design Spring 2004

Coordinated multidisciplinary functionality design of microprocessor, communication module and strategic programming.

Oversaw the designed robot completed 2 (out of 2) difficult tasks in shortest times.

Analytical Nanoscale Device Modeling Fall 2004

Modeled and simulated 2D quantum effects in MOSFETs.

Identified and modeled quantum effects in poly-gates, resulting in improved model accuracy of 5%.

Work Experience

Facebook Inc., Ads team, Palo Alto, CA September 2011 December 2011

Software Engineer

Work with the Ads team to improve performance of Sponsored-Story (SS) ads.

Investigated and evaluated new features to optimize SS ads.

Enhanced the backend infrastructure to support sub-model optimization of ads by features.

Created internal tools to aid separate analysis of SS ads and non-SS ads.

Improved ads revenue by 5+% confirmed by backtesting results.

Cisco Systems, Gigabit Switch Business Unit (GSBU), San Jose, CA May 2007 August 2007

Engineer

Developed automated test platforms to evaluate performance of Ethernet switches that increased efficiency by 20%.

Identified a siginificant bug that prevented the project from moving on for 2 days and met the delivary deadline.

Dept. of Electrical Engineering and Computer Sciences, UC Berkeley Spring 2007 - Fall 2009

Graduate Student Instructor of two graduate courses

Designed and led weekly discussion sessions to 30+ graduate students.

Prepared lecture materials; designed and graded homework and exams; conducted guest lectures and held office hours.

Extracurricular Activities

Berkeley Chinese Students and Scholars Association, UC Berkeley August 2006 August 2008

Served as Director of Public Relations from 2006 to 2008; key Emcee of Campus wide festival events.

Chaired and emceed year 2008 Chinese Spring Festival Event attended by 300+ scholars and students.

Guided 100+ students to perform volunteer work in the show of San Francisco Same Song by China Central Television.

Lectured on graduate study and career path in 2010 Berkeley-Tsinghua Forum and influenced 30+ undergraduate students.

Intl. Assoc. of Students in Economics and Management (AIESEC), Tsinghua University June 2005 May 2006

Served asVice President of Outgoing Exchange Department; key member in establishing the 1st Local Committee under AIESEC Intl.

Chaired AIESEC Corporate Social Responsibility Forum attended by 100+ delegates from universities and companies.

Led and planned campus-wide member recruiting campaign that increased applications by 40%.

Lectured on resume and interview skills to 150+ students and motivated them to participate in the internship exchange.

Business Project Experience

Business Prototype for Women Professional Wear Fall 2010

Teamed with 3 Berkeley MBA students and built a business model and a service website prototype for women professional wear.

Interviewed 50+ customers and identified problems of fitness, outfit and social networking in women professional wear.

Conducted 4 rounds of idea generation; proposed and evaluated 10 ideas using a concept selection matrix with 10 critieria.

Developed a financial plan and a business model that can generate positive profit in 4 years.

Developed 3 prototypes and a final trunk clothing service website to offer clothing advisory and clothing picking service.

Business Plan for Flip Video in South America Fall 2009

Teamed with 4 Berkeley MBA and engineering students and wrote a business plan for flip video in South America.

Identified top 3 markets in South America by GDP, consumer electronics consumption and Internet penetration.

Researched the market on its distribution channels, tarrifis, and competitive products.

Proposed a business plan that suggests the price, models, number of units to sell in each of the potential market.

Selected Publications

Hao Zhang, Minghua Chen, Abhay Parekh and Kannan Ramchandran, An Adaptive Multi-channel P2P Video-on-Demand

System using Plug-and-Play Helpers, (under peer review) ICDCS 2011.

Hao Zhang, Chuohao Yeo and Kannan Ramchandran, "VSYNC -- Bandwidth-efficient And Distortion-tolerant Video File

Synchronization," (under 2nd round peer review) IEEE Transactions on Circuits and Video Technology, 2010.

Hao Zhang, Ziyu Shao, Minghua Chen and Kannan Ramchandran, Optimal Neighbor Selection in BitTorrent-like Peer-to-Peer

Networks, (under peer review) ACM SIGMETRICS 2011.

Ramji Venkataramanan, Hao Zhang and Kannan Ramchandran, Interactive Low-complexity Codes for Synchronization from

Deletions and Insertions, Allerton Conference, 2010. (invited paper)

Ermin Kozica, Hao Zhang and Kannan Ramchandran, Frame-Bufferless Sum-Rate Constrained Video Encoding Using

Feedback, IEEE International Conference on Image Processing (ICIP), 2010. (Best Paper Award Finalist)

Hao Zhang, Minghua Chen and Kannan Ramchandran, Scaling P2P Content Delivery Systems Reliably by Exploiting Unreliable

System Resources, IEEE MMTC E-Letter of December, 2009. (invited paper)

Hao Zhang, Jiajun Wang, Minghua Chen and Kannan Ramchandran, Scaling Peer-to-Peer Video-on-Demand Systems Using

Helpers, IEEE International Conference on Image Processing (ICIP), Nov, 2009.

Hao Zhang and Kannan Ramchandran, A Reliable Decentralized Peer-to-Peer Video-on-Demand System Using Helpers,

Picture Coding Symposium (PCS), May, 2009. (invited paper)

Hao Zhang, Chuohao Yeo and Kannan Ramchandran, Remote Video File Synchronization for Heterogeneous Mobile Clients,

SPIE Optical Engineering and Applications, Aug, 2009. (invited paper)

Hao Zhang, Chuohao Yeo and Kannan Ramchandran, Rate Efficient Remote Video File Synchronization, IEEE International

Conference on Acoustics, Speech and Signal Processing, April, 2009. (Best Paper Award Finalist).

Chuohao Yeo, Parvez Ahammad, Hao Zhang, and Kannan Ramchandran, Rate-Constrained Distributed Distance Testing and its

Applications, IEEE International Conference on Acoustics, Speech and Signal Processing, 2009.

Hao Zhang, Chuohao Yeo and Kannan Ramchandran, VSYNC --- A Novel Video File Synchronization Protocol, ACM

Multimedia (top conference in Multimedia), Oct, 2008 (Best Paper Award).

Hao Zhang, Dawei Zhang, Zhiping Yu et. al, Analytical Modeling of Quantum Mechanical Effects in Poly-Gates of Nano-Scaled

MOSFETs, Microelectronics, Vol. 35, No. 4, P.390-393,399, Aug 2005.

Dawei Zhang, Hao Zhang, Zhiping Yu et. al, A unified charge model comprising both 2D quantum mechanical effects in

channels and in poly-silicon gates of MOSFETs, Solid-State Electronics, Vol. 49, No. 10, Oct 2005.

Dawei Zhang, Guangping Zhu, Hao Zhang, et. al, 2-D Quantum Mechanical (QM) Charge Model and Its Application to Ballistic

Transport of Sub-50nm Bulk Silicon MOSFETs, SISPAD, Munich Germany, Sept 2004.

Dawei Zhang, Hao Zhang, Zhiping Yu, et. al, Gate-Capacitance-Shift Approach and Compact Modeling for Quantum

Mechanical Effects in Poly-Gates, Chinese Journal of Semiconductors, Vol. 25, No. 12, Dec 2004.

Dawei Zhang, Hao Zhang, Zhiping Yu, Lilin Tian, Analytical Charge Model for MOSFETs with 2-D Quantum Mechanical

Effects, Research and Progress of Solid-State Electronics, Vol. 1, 2005.

Language Skills & Interest

Language Skills: Mandarin (Native), English (Fluent, won 1st prize out of 100+ participants in Provincial English Drama Contest)

Interest: Piano (passed proficiency exam level 7/10).

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