Biography

I am a Ph.D. student at Department of Computer Sciences, University of Wisconsin-Madison starting from Fall 2018. I am currently advised by Prof. Xiangyao Yu. Before 2019 Fall, I was advised by Prof. Theodoros Rekatsinas in my first year of PhD working on ML-driven data integration and data cleaning. I obtained my Bachelor’s degree with honors in Computer Sciences from UW-Madison in 2018.

My research interests lie in the area of database systems, with a focus on transaction processing, distributed and parallel databases.

Publications

Cornus: One-Phase Commit for Cloud Databases with Storage Disaggregation
Zhihan Guo*, Xinyu Zeng*, Ziwei Ren, Xiangyao Yu
under submission [preprint]

Releasing Locks As Early As You Can: Reducing Contention of Hotspots by Violating Two-Phase Locking
Zhihan Guo, Kan Wu, Cong Yan, Xiangyao Yu
SIGMOD’2021 [paper]

The Storage Hierarchy is Not a Hierarchy: Optimizing Caching on Modern Storage Devices with Orthus
Kan Wu, Zhihan Guo, Guanzhou Hu, Kaiwei Tu, Ramnatthan Alagappan, Rathijit Sen, Kwanghyun Park, Andrea Arpaci-Dusseau and Remzi Arpaci-Dusseau
FAST’2021 [paper]

The Storage Hierarchy is Not a Hierarchy: Optimizing Caching on Modern Storage Devices with Orthus
Kan Wu, Zhihan Guo, Guanzhou Hu, Kaiwei Tu, Ramnatthan Alagappan, Rathijit Sen, Kwanghyun Park, Andrea Arpaci-Dusseau and Remzi Arpaci-Dusseau
NVMW’2021 [paper]

A Statistical Perspective on Discovering Functional Dependencies in Noisy Data
Yunjia Zhang, Zhihan Guo and Theodoros Rekatsinas
SIGMOD’2020 [paper]

Unsupervised Functional Dependency Discovery for Data Preparation
Zhihan Guo and Theodoros Rekatsinas
ICLR’2019, Learning from Limited Data Workshop [paper] [extended paper] [poster]

Data profiling methods for interactive data cleaning
Zhihan Guo and Theodoros Rekatsinas
MMLS’2018

Research & Work Experience

Software Engineer Intern in System & Infrastructure
Facebook in Seattle, WA
Summer 2021

Research Assistant
UW-Madison Database Group in Madison, WI
2018.02 - present

Research Assistant
UW-Madison HCI Group in Madison, WI
2017.02 - 2018.05

Research Assistant
Center for Healthy Minds in Madison, WI
2017.01 - 2017.09

Research Assistant
Child Emotion Lab @ Waisman Center in Madison, WI
2016.01 - 2017.09

Teaching

Teaching Assistant for CS564 Database Management Systems, Fall 2019