High-Throughput Diffusion Inference System
Production inference system for a 12B-parameter Diffusion Transformer on H100 clusters — 20–30 images/min/GPU at 1–3s latency with multi-GPU NCCL coordination
Posts by Collection
portfolio
Video Super-Resolution Pipeline
ESRGAN-based 360p→720p video upscaling system — avg PSNR 31.5 dB, SSIM 0.919, processing at 7.8 fps on GPU
AI Virtual Try-On System
Automated diffusion-based garment-swap pipeline — async task orchestration, smart polling, and batch processing across model×garment combinations
Multi-LLM Evaluation Platform
Cross-platform Electron desktop app with custom browser automation for side-by-side LLM evaluation — supporting a first-author ICML 2026 submission (31K+ trials, 5 LLMs, 1,989-task benchmark)
LLM-Powered Recommendation Platform
Full-stack RAG chatbot on GCP — BigQuery vector search (ScaNN), Gemini 2.0 Flash, LangChain — MRR 0.88, nDCG@3 0.85 across 500 queries on 571M Amazon reviews
Privacy-Preserving Ed Discussion RAG System
End-to-end Python pipeline transforming historical course forum data into RAG corpora, powering a grounded TA chatbot via hybrid retrieval (Dense + Lexical + Metadata) and Gemma-3-4B-IT.
Urban Microclimate Forecasting System
Multi-scale LSTM with attention and gated feature selection for campus-scale microclimate prediction — Temperature RMSE 0.43°C / R² 0.993, Relative Humidity RMSE 1.28% / R² 0.995, mapped at 100,283 grid points via Regression Kriging
publications
Image Colorization using Generative Adversarial Network
Published in Proc. SPIE 12294, 7th International Symposium on Advances in Electrical, Electronics, and Computer Engineering, 2022
A novel lightweight GAN pipeline for automatic image colorization with YUV-channel separation technique, improving structural fidelity and perceptual sharpness.
Recommended citation: Erxi Cheng, Ruiqian Ma, Ruichen Qi, Yupeng Tang. (2022). "Image colorization using generative adversarial network." Proc. SPIE 12294, 7th International Symposium on Advances in Electrical, Electronics, and Computer Engineering, 122943Z (19 October 2022).
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talks
Talk 1 on Relevant Topic in Your Field
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Conference Proceeding talk 3 on Relevant Topic in Your Field
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teaching
Linear Algebra
Undergraduate Course - Teaching Assistant, Shandong University, School of Mechanical, Electrical and Information Engineering, 2020
Teaching Assistant for a 400+ student Linear Algebra course at Shandong University (Fall 2020 – Spring 2021), under the School of Mechanical, Electrical and Information Engineering. Recognized as Outstanding Teaching Assistant at the end of the academic year.
ME 4710 – Foundations in Machine Learning for Engineers
Teaching Assistant, Georgia Institute of Technology, Mechanical Engineering, 2025
Teaching Assistant for ME 4710 – Foundations in Machine Learning for Engineers at Georgia Tech (Fall 2025), working with Dr. Jarred Fountain.
MGT 6655 – Business Data Preparation and Visualization
Teaching Assistant, Georgia Institute of Technology, Scheller College of Business, 2026
Teaching Assistant for MGT 6655 – Business Data Preparation and Visualization at Georgia Tech (Spring 2026), working with Prof. Mingfeng Lin.