Compiled on October 7, 2025.
Chi Zhao (Vector)
ć vector.zhaochi@gmail.com | î https://chizhao.gitlab.io | ] | a | Ƹ | Ȉ
Education
Saint Petersburg State University Sept. 2021 – Jun. 2025
PhD in Applied Mathematics and Control Processes Saint Petersburg, Russia
Thesis Title: “Modeling of binary opinion dynamics in social networks of complex congurations” Defended in Apr. 2025
Saint Petersburg State University Sept. 2019 – Jun. 2021
M.S. in Applied Mathematics and Informatics (GPA: 4.9/5.0) Saint Petersburg, Russia
Beijing Institute of Technology Jul. 3 – 28, 2017
ACM Summer Camp Beijing, China
Yanan University 2015 – 2019
B.S. in Computer Science (GPA: 3.1/4.0) Yanan, China
Working Experience
Huawei Inc. Sep. 2021 – Present
R&D Engineer Saint Petersburg, Russia
Wisedu Inc. Sep. 2016 – May. 2019
Software Engineer Yanan, China
Project Experience
* Professional model data governance/Valuable training data selection 2025
Project leader Saint Petersburg, Russia
Project focused on improving model performance through data governance and optimized feature/training data selection.
Sampled 60M representative records from 1.8B wireless data using custom diversity sampling algorithms.
Boosted model accuracy by 22% using custom sampling and anomaly detection algorithms.
Accelerated training by 10% via custom feature importance algorithms that removed 20% redundant features.
* Internal columnar storage algorithm 2023–2024
R&D Engineer Saint Petersburg, Russia
High-performance, highly exible columnar storage lossless compression algorithm
The algorithm will be commercialized to store base station data.
LTE (4G) data 30% CR, NR (5G) data 40% CR, without loss any performance.
Russian Science Foundation Grant No. 22-21-00346 2023
Researcher Saint Petersburg, Russia
Completed simulation of two-layer opinion dynamics models, focusing on expressed and private opinions.
* Elastic expansion algorithm for internal distributed le storage systems 2023
R&D Engineer Saint Petersburg, Russia
Enabled seamless HOFS multi-node expansion using HRW Hashing with minimal data movement and no performance loss.
Improved system reliability by ensuring data access continuity even after hash ring loss.
* Packet/Router data compression 2023
R&D Engineer Saint Petersburg, Russia
This project achieved 85% CR without loss (Save 7x disk usage).
* Wireless data compression 2021–2022
R&D Engineer Saint Petersburg,Russia
This project achieved 96% CR through lossy compression.
* SparkSQL query optimization 2021
R&D Engineer Saint Petersburg, Russia
This project speeds up query execution by 50% through predicate pushdown and optimization of data structures.
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X Source: github.com/vectorsss/cv | Web Version: cv.zhaochi.ru
Patent / Copyright Certificates
A program for modeling the opinion dynamics in two-layer networks 2023
Russian Computer Software Copyright Registration Certicate NO. 2023661532
Online News Classication System Based on Convolutional Neural Network 2018
Chinese Computer Software Copyright Registration Certicate NO. 2831192
Open Source Projects
ShapG | python · feature importance algorithm · centrality measures
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A Python package for feature importance algorithms based on Shapley values.
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This package can also be used to calculate the centrality in the graph.
News Classication | python · NLP · CNN · text classication
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Online News Classication System Based on Convolutional Neural Network.
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This project was awarded the provincial 3
rd
prize in the 2018 national computer design competition.
Skills
Programming: Python · C/C++ · Go · Rust · Matlab/Octave · Julia · R · SQL · L
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ML Libraries: Tensorow · PyTorch · Keras · Scikit-Learn
Developer Tools: Git · Docker · Google Cloud Platform
OS: Windows · MacOS · Arch Linux
Languages: Chinese (native), and English (professional working prociency)
Research interests
Graph Algorithms · Centrality Measures · Machine learning · Explainable Articial Intelligence · Probability Theory · Statistics
Data Compression · Coding Theory · Time Series Analysis · Optimization · Stochastic Modeling · Stochastic Processes
Teaching
Applied Statistics in R Saint-Petersburg, Russia
Teaching assistant 2024
Statistical Decisions and Econometrics Saint-Petersburg, Russia
Teaching assistant 2022
Community service
Reviewer for journals and conferences
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Engineering Applications of Articial Intelligence (EAAI)
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International Conference On Computational Optimization (ICOMP)
Selected Publications
1. Zhao C., Liu J., Parilina E. M. The Shapley Value Contribution to Explainable Articial Intelligence: A
Comprehensive Survey // Dynamic Games and Applications. – 2025. – Oct. – P. 1-38. (Q2)
2. Zhao C., Liu J., Parilina E. M. Complete-to-Sparse: A Novel Graph Construction Strategy for Ecient ShapG //
Mathematical Optimization Theory and Operations Research. – Cham : Springer Nature Switzerland. – 2025. – P.
180–194.
3. Zhao C., Liu J., Parilina E. M. ShapG: new feature importance method based on the Shapley value // Engineering
Applications of Articial Intelligence. – 2025. – May. – Vol. 148, 110409. (Q1, IF: 8.0)
4. Zhao C., Parilina E. M. Centrality measures and opinion dynamics in two-layer networks with replica nodes //
Computers and Operations Research. – 2026. – Jan. – Vol. 185, 107245. (Q1, IF: 4.3)
5. Zhao C., Parilina E. M. Analysis of consensus time and winning rate in two-layer networks with hypocrisy of
dierent structures // Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control
Processes. – 2024. – Vol. 20, no. 2. – P. 170-192.
6. Zhao C., Parilina E. M. Opinion Dynamics in Two-Layer Networks with Hypocrisy // Journal of the Operations
Research Society of China. – 2024. – Mar. – Vol. 12, no. 1. – P. 109-132. (Q2)
7. Zhao C., Parilina E. M. Network Structure Properties and Opinion Dynamics in Two-Layer Networks with
Hypocrisy // Mathematical Optimization Theory and Operations Research. – Cham : Springer Nature Switzerland. –
2024. – P. 300-314.
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X Source: github.com/vectorsss/cv | Web Version: cv.zhaochi.ru
8. Zhao C., Parilina E. M. Consensus time and winning rate based on simulations in two-layer networks with hypocrisy
// 2023 7th Scientic School Dynamics of Complex Networks and their Applications (DCNA). – 2023. – P. 68-71.
Conferences
Mathematical Optimization Theory and Operations Research (MOTOR 2025) Novosibirsk, Russia
Oral Presentation July. 07 - 11, 2025
Game Theory and Management (GTM 2025) Saint-Petersburg, Russia
Oral Presentation July. 2 - 4, 2025
14
th
International Society of Dynamic Games (ISDG) Workshop Yerevan, Armenia
Oral Presentation June. 11 - 13, 2025
International Conference On Computational Optimization (ICOMP 2024) Innopolis, Russia
Visitor Oct. 10 - Oct. 12, 2024
Mathematical Optimization Theory and Operations Research (MOTOR 2024) Omsk, Russia
Oral Presentation June. 30 - July. 06, 2024
Game Theory and Management (GTM 2024) Saint-Petersburg, Russia
Oral Presentation June. 26 - 28, 2024
Dynamics of Complex Networks and their Applications (DCNA 2023) Kaliningrad, Russia
Poster Presentation Sep. 18 - 20, 2023
Game Theory and Management (GTM 2023) Saint-Petersburg, Russia
Oral Presentation June. 28 - 30, 2023
Control Processes and Stability 2022 Saint-Petersburg, Russia
Oral Presentation Apr. 4 - 8, 2022
Control Processes and Stability 2021 Saint-Petersburg, Russia
Oral Presentation Apr. 5 - 9, 2021
The Computing Conference 2017 Hangzhou, China
Visitor Oct. 11 - 14, 2017
Yiban Developer Conference 2017 Shanghai, China
Developer Aug. 2017
Language & Intelligence Summit 2017 Beijing, China
Visitor July 23, 2017
Honours & Awards
Name Placing Scope Awarder Year
General Development Star - Huawei Inc. General development department Oct. 2024
General Development Star - Huawei Inc. General development department Jun. 2023
General Development Star - Huawei Inc. General development department Oct. 2022
President’s Award (Team) - Huawei Inc. MAE-M department Dec. 2021
Diploma with distinction - University Saint Petersburg State University Jun. 2021
Excellent Graduation Thesis (Design) - University Yanan University Jun. 2019
Excellent Graduate - University Yanan University Jun. 2019
Merit Student Scholarship - University Yanan University Dec. 2018
China Software Cup Competition 3
rd
China China Software Cup Organizing Committee Oct. 2018
Computer Design Competition 3
rd
Northwest China Northwest University (China) May. 2018
Mathematical Contest in Modeling 2
nd
Shaanxi China Society for Industrial and Applied Mathematics Dec. 2017
Mathematics Competition 3
rd
Shaanxi Chinese Mathematical Society Nov. 2016
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X Source: github.com/vectorsss/cv | Web Version: cv.zhaochi.ru
