Assistant Software Engineer

Department of Computer Science

Guozhang WANG **** Upson Hall

Cornell University, Ithaca, NY

Phone: 607-***-****

E-mail: ****@**.*******.***

RESEARCH INTERESTS

Large-scale data driven systems with particular interests in cloud computing infrastructure.

EDUCATION

September 2008 present Cornell University, Ithaca, NY, USA

Ph.D., Computer Science

Minor: Statistics

July 2006 November 2006 National University of Singapore, Singapore

Exchange Student, Computer Science

September 2004 June 2008 Fudan University, Shanghai, China

B.S., Science and Technology

HONORS AND AWARDS

Cornell University Computer Science Department TA Excellence Award, May.2009

Tung Orient Overseas Container Line Scholarship (top 5/140 of the department), Oct.2007

Chun-Tsung Scholar of China (supported by Nobel Prize Laureate: Lee, T.D), May.2007

Fudan University First-class Renmin Scholarship, Oct.2005, Oct.2006

Chinese Mathematical Olympiad First-class Award (totally 33 students of the state), Feb.2004

PUBLICATIONS

Journal Articles

Xiaokui Xiao, Guozhang Wang, Johannes Gehrke, Differential Privacy via Wavelet Transforms, In

TKDE special issue of "Best Papers of ICDE 2010", 2010.

Michaela G Ashwin Machanavajjhala, Guozhang Wang, Xiaokui Xiao, Johannes Gehrke,

tz,

Publishing Search Logs A Comparative Study of Privacy Guarantees, In TKDE, 2009.

Conference Proceedings

Tao Zou, Guozhang Wang, Marcos Vaz Salles, David Bindel, Alan Demers, Johannes Gehrke,

Walker White, Making Time-stepped Applications Tick in the Cloud, In Proc. SOCC 2011.

Guozhang Wang, Marcos Vaz Salles, Benjamin Sowell, Xun Wang, Tuan Cao, Alan Demers,

Johannes Gehrke, Walker White, Behavioral Simulations in MapReduce, In Proc. VLDB 2010.

Xiaokui Xiao, Guozhang Wang, Johannes Gehrke, Differential Privacy via Wavelet Transforms, In

Proc. ICDE 2010.

Xiaokui Xiao, Guozhang Wang, Johannes Gehrke, Interactive Anonymization of Sensitive

Data, In Proc. ACM SIGMOD 2009. (Demo Paper)

In Submission

Guozhang Wang, Wenlei Xie, Alan Demers, Johannes Gehrke, Asynchronous Large-Scale Graph

Processing Made Easy, In Proc. CIDR 2013.

TEACHING EXPERIENCE

2012 Fall

CS 5320: "Introduction to Database", Teaching Assistant

2012 Fall

CS 5321: "Practicum in Database Systems", Teaching Assistant

2010 Spring

CS 5300: "The Architecture of Large-Scale Information Systems", Teaching Assistant

2008 Fall

TA Excellence Award

CS 4320: "Introduction to Database", Teaching Assistant

2008 Fall

CS 4321: "Practicum in Database Systems", Teaching Assistant

RESEARCH AND WORKING EXPERIENCE

Sep. 2008 Present

Research Assistant, Cornell University

Title 1: Automatic Scaling Out Iterative Computations

Worked on building large scale frameworks for iterative computations, including simulations, graph processing,

and machine learning applications. Leveraged natural properties of iterative computation patterns such

as data locality and update order independence for efficient data partitioning and synchronization. Explored

computational scheduling and data replication techniques for tolerating network jitters in cloud computing

architectures. Proposed a programming framework and the underlying parallel runtime for iterative graph

processing applications to enable both programming simplicity and asynchronous executions by separating

algorithmic logic with scheduling policies.

Title 2: Privacy-Preserving Data Publishing

Worked on mechanisms of publishing search logs including frequent keywords, queries and clicks under

relaxed -differential privacy guarantees. Developed a data publishing framework applying wavelet transforms

to provide accurate answers for range-count queries. Implemented a data anonymization toolkit with intuitive

interface that can interactively guide users through the privacy -preserving data publishing process.

May. 2012 Aug. 2012

Engineering Intern, LinkedIn Data Infrastructure Team

Title: Consumer Redesign in Apache Kafka

Worked on Apache Kafka, a distributed publish-subscribe messaging system. Focused on the consumer

redesign project, which aims at migrating the rebalance logic to a centralized coordinator at the server side

and removing functional dependencies such as ZooKeeper for communication and synchronization purposes.

May. 2011 Aug. 2011

Research Intern, Microsoft Jim Gray Systems Lab

Title: Implementing Queues in Main-memory Databases

Worked on main-memory component of the Microsoft SQL Server. Compared the performance of different

lock-free data structures and algorithms for supporting queue services under various workloads . Studies related

transactional semantics of queuing operations under the multi-version concurrency control mechanism.

May. 2010 Aug. 2010

Research Intern, Microsoft Research Redmond

Title: Multi-tenant Architecture for Conference Management Tools

Worked on Microsoft Conference Management Tool (CMT). Explored challenges of transmitting the CMT

servers to a shared-table multi-tenant data infrastructure. Studied a related work of allocating applications

to multiple database instances in the server.

Jul. 2007 Nov. 2007

Research Intern, Microsoft Research Asia

Title: Unsupervised Table Entity Retrieval for Non-Template Web Pages

Worked on techniques of Web table retrieval. Applied SVD for feature extraction using both web structure

and text content information to detect table regions from web. Studied techniques for name entity recognition

using character level n-gram Semi-CRF models.

May. 2007 May. 2008

Research Assistant, Shanghai (International) Database Research Center

Title: Data Stream Anomaly Detection

Worked on data stream processing, with special focus on anomaly detection. Applied Principle Component

Analysis (PCA) to study the activity of different hosts from the same cluster.

SKILLS

Programming

C/C++, Java, Matlab, SQL, Python, Scala

Operating Systems

Linux (Ubuntu, Red Hat), Windows

REFERENCES

Johannes Gehrke, Professor Ping Li, Assistant Professor

Dept. of Computer Science Dept. of Statistical Science

Cornell University, USA Cornell University, USA

Donghui Zhang, Senior Software Engineer Sanjay Agrawal, Software Engineer

Development Team Ads Backend Team

Paradigm4, USA Google, USA

David DeWitt, Technical Fellow

Jim Gray Systems Lab

Microsoft, USA

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