Tianhui (Hilda) Z.
ML Engineer (Thesis Work)
Experience
Jan 2024 - Aug 2024
8 monthsStockholm, Sweden
ML Engineer (Thesis Work)
Ericsson
- Explored state-of-the-art generative AI techniques by mining selected GitHub repositories with all versions from the last 3 years.
- Built and maintained a cleaned dataset of over 1M samples for LLM fine-tuning to detect breaking changes from third-party library updates.
- Fine-tuned CodeT5+ and Code Llama using the QLoRA method, achieving an F1-score above 95% and demonstrating generative AI’s potential in software upgrades.
Nov 2023 - Dec 2023
2 monthsStockholm, Sweden
Reinforcement Learning Project
KTH Royal Institute of Technology
- Implemented Deep Q-Learning with a replay buffer and target networks and compared it with Actor-Critic in the Lunar Lander environment.
- Optimized hyperparameters (discount factor, buffer size, learning rate) to improve average reward to over 200 after approximately 350 episodes.
- Evaluated training curves, showing the DQN agent outperforming the random agent.
Feb 2023 - May 2023
4 monthsStockholm, Sweden
Parallel Sobel Filtering Project
KTH Royal Institute of Technology
Implemented image preprocessing and matrix transformations in Python.
Designed and parallelized the Sobel filter in C with MPI on Dardel (the top supercomputer), employing red-black communication to avoid deadlocks.
Achieved strong parallel efficiency and near-linear speed-up up to 128 processors on images with over 150k pixels.
Summary
Applied & Computational Mathematics graduate with expertise in Python, Machine Learning, and Generative AI.
Experienced in fine-tuning LLMs and building large-scale datasets.
Skilled in data preprocessing, feature engineering, and evaluation, with hands-on experience in ML pipelines and real-world projects.
Languages
English
AdvancedChinese
AdvancedSwedish
IntermediateEducation
Aug 2022 - Aug 2024
KTH Royal Institute of Technology
Master of Applied and Computational Mathematics · Applied and Computational Mathematics · Stockholm, Sweden
Aug 2018 - Jun 2022
University of Science and Technology Beijing
Bachelor of Mathematics and Applied Mathematics · Mathematics and Applied Mathematics · Beijing, China
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