I joined the Computer Science & Engineering Department at the University of California Riverside as an Assistant Professor in 2015, where I am a member of the RIPLE research group.
Before that, I received my Ph.D. in Computer Science from the College of William and Mary under the supervision of Dr. Xipeng Shen, and worked at Mozilla Corporation and Pacific Northwest National Lab during the summers of 2012 and 2015, respectively.

Research Interests: Programming system supports for multicore and heterogeneous computing, with a focus on parallelizing fundamental computation models, such as automata and transducers, and improving the efficiency of applications that consume irregular or semi-structured data;
Programming system supports for smartphone and mobile apps.

Selected Recent Publications

Programming System Supports for Parallelism

Tigr: Transforming Irregular Graphs for GPU-Friendly Graph Processing [ASPLOS'18] [code]
Amir Nodehi, Junqiao Qiu, Zhijia Zhao

Enabling Scalability-Sensitive Speculative Parallelization for FSM Computations [ICS'17]
Junqiao Qiu, Zhijia Zhao, Bo Wu, Abhinav Vishnu and Shuaiwen Leon Song

Grammar-aware Parallelization for Scalable XPath Querying [PPoPP'17]
Lin Jiang and Zhijia Zhao

MicroSpec: Speculation-Centric Fine-Grained Parallelization for FSM Computations [PACT'16]
Junqiao Qiu, Zhijia Zhao and Bin Ren

On-The-Fly Principled Speculation for FSM Computations [ASPLOS'15]
Zhijia Zhao and Xipeng Shen

Challenging the "Embarrassingly Sequential" [ASPLOS'14]
― Parallelizing Finite State Machine-Based Computations through Principled Speculation
Zhijia Zhao, Bo Wu and Xipeng Shen

Program Analysis & Mobile Apps

RuntimeDroid: Restarting-Free Runtime Change Handling for Android Apps [MobiSys'18]
Umar Farooq and Zhijia Zhao

SatScore: Uncovering and Avoiding a Principled Pitfall in Responsiveness Measurements of App Launches [Ubicomp'14]
Zhijia Zhao, Mingzhou Zhou and Xipeng Shen

Call Sequence Prediction through Probabilistic Calling Automata [OOPSLA'14]
Zhijia Zhao, Bo Wu, Mingzhou Zhou, Yufei Ding, Jianhua Sun, Xipeng Shen, and Youfeng Wu

PhD Students (start year)
Professional Activities
Program Committee: NPC'18, HiPC'18, ICS'18 (ERC), HiPC'17, ACM CF'17, IPDRM'17, HIPC'17, ICPP'16, PLDI'16 (SRC and Poster), IPDRM'16, LCPC'15 (Poster)
Organizing Committee: ASPLOS'18 (Workshop and Tutorial Chair), ICPADS'16 (Track Chair), LCPC'15 (Web Chair)

CS152 Compiler Design: 2019 Spring
CS179K Project in Computer Science (Software Engineering): 2018 Winter
CS180 Introduction to Software Engineering: 2015 Fall, 2016 Fall, 2017 Fall, 2018 Fall
CS201 Compiler Construction: 2016 Winter, 2017 Winter, 2018 Winter, 2019 Winter
CS260 Advanced Topics on Parallelism Exploitation: 2017 Spring


Office: Room 412, WCH

Mailing Address:
Computer Science & Engineering
Winston Chung Hall 351
Riverside, CA 92521

Email: zhijia [at] cs.ucr.edu


[2018.02] MobiSys'18 accepted our work on runtime change handling for Android apps.

[2017.11] ASPLOS'18 accepted our work on graph transformations for GPU platforms.

[2017.08] Serving as a co-chair for Workshops and Tutorials at ASPLOS'18. Please consider submitting. [Call for Proposals]

[2017.03] ICS'17 accepted our work on scalability-sensitive speculative parallelization.

[2016.12] PPoPP'17 accepted our work on parallel XPath querying.

[2016.07] HPar, a parallel HTML5 parser, is now on Github. Please contact me if you are interested in making contributions.

[2016.07] PACT'16 accepted our work on fine-grained speculative parallelization for FSMs.

[2016.04] I serve as a track chair of ICPADS'16. Please consider making submissions.

[2016.01] Received NSF CRII award for studying the reliability of finite automata computations.