Sitemap
A list of all the posts and pages found on the site. For you robots out there, there is an XML version available for digesting as well.
Pages
Posts
Future Blog Post
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Blog Post number 4
This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.
Blog Post number 3
This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.
Blog Post number 2
This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.
Blog Post number 1
This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.
misc
Selected Poems
English poems
projects
Pixel-Style Graphic PC Game
Overview (1 min) | Participant. Oct 2019 ~ Jun 2020
Utilized C++ to implement features for character navigation, combat, item selection, map loading and NPC iteraction.
RoboGame2020 Competition
Overview (1 min) | Participant. Jun 2020 ~ Oct 2020
Collaborated in designing and programming a robot with STM32 embedded systems for moving simulated patients to designated beds; programmed and controlled the robotic arm for task execution. Achieved Fourth Place in the second round of the competition.
ISC21 International Supercomputing Competition
Overview (1 min) | Participant. Oct 2020 ~ Jun 2021
Enhanced a Fortran-based weather forecasting model (WRF) by optimizing compilation flags and parallelization strategies. Ranked 1st on the WRF application and 6th overall among 13 finalist teams in the competition.
VSCode-Azure DevOps Integration Extension
Overview (1 min) | Team leader. Sep 2022 ~ Dec 2022
Led the design and development of a Visual Studio Code extension enabling pull request (PR) workflows with Azure DevOps.
ASC22-23 International Supercomputing Competition
Overview (1 min) | Team leader. Jan 2022 ~ May 2023
Led a team to optimize various applications, including numerical simulation and large language models (LLMs). Awarded 2nd Place among 300 teams worldwide.
publications
Joint Optimization of Handoff and Video Rate in LEO Satellite Networks
Overview (1 min) | Paper
Authors: Kyoungjun Park, Zhiyuan He, Cheng Luo, Yi Xu*, Lili Qiu, Changhan Ge, Muhammad Muaz, Yuqing Yang
We propose and evaluate new algorithms for video-aware mobility management in satellite networks, jointly optimizing satellite handoff and video bitrate to improve streaming experience for both single and multiple users.
Replica Server Placement in a Satellite Network
Overview (1 min) | Paper | Slides
Authors: Zhiyuan He, Yi Xu*, Cheng Luo, Lili Qiu, Yuqing Yang
Satellites can be applied as content replica servers to improve client experience in the remote locations. We optimized the placement of servers in satellite networks to reduce transmission and storage costs while considering satellite movement.
Sublinear Algorithms for Estimating Single-Linkage Clustering Costs
Overview (1 min) | Paper | Slides
Authors: Pan Peng, Christian Sohler, Yi Xu* (alphabetical order)
We proposed new cost functions about SLC, which reflects properties of datasets, and estimated our costs in sublinear time. We studied this problem in both distance and similarity measurements, and conducted extensive experiments to validate our results. We also proved the lower bounds, and our algorithms nearly match them.
talks
Theory Student Day 2025
Presented an in-depth overview of our work on sublinear algorithms for estimating SLC costs.
Women in Theory 2025 Rump Session
Briefly presented recent work on sublinear algorithms for estimating SLC costs.
teaching
Design and Analysis of Algorithms
Teaching assistance, Master's course, USTC, 2024
This course mainly introduces the basics of Randomized Algorithms, Approximation Algorithms, and Distributed Algorithms, and the methods to analyze the efficiency and correctness of algorithms.
Algorithms for Big Data
Teaching assistance, Bachelor's course, USTC, 2025
This course is a theory-oriented course, and introduces modern algorithmic techniques for big data.