Urban Mobility AI 3DGS Benchmark Local AI Stack

Zefan Cai

Shanghai Portfolio Email
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NYC Zones
Featured Projects
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Urban Mobility AI

AI-driven taxi fleet repositioning on 263 NYC zones — demand forecasting, multi-agent simulation, offline RL & reproducible OPE.
Reinforcement LearningDemand Forecasting LightGBMDQNMulti-Agent
NDCG@3 0.9565
+$54/driver DQN lift
402 tests
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3DGS Renderer Benchmark

Which 3DGS renderer is fastest? Which compression is best? We measured them all — on the same GPU, same scenes, same protocol.
3D Gaussian SplattingCUDA PyTorchGPU Benchmark
12 renderer variants
5 real scenes
FPS · PSNR · LPIPS
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Local AI Stack

A private, local AI workspace for RAG, knowledge bases, coding help, and LoRA fine-tuning — powered by Ollama, FastGPT, and pgvector.
RAGOllamaFastGPT pgvectorDockerLoRA
Vector DB
Local LLM
Docker Compose
Tech Stack
Python
C++
TypeScript
PyTorch
LightGBM
scikit-learn
Stable Baselines3
Polars
Docker
GitHub Actions
FastAPI
CUDA
Research Philosophy
"Reproducibility is not optional."