Levi Lee

Work

Selected projects. Source over narrative — most link straight to the code.

  1. 01

    Social-Debate-AI

    Multi-agent LLM debate system on LangGraph, built to rigorously test — not assume — whether RAG, a GNN, and RL actually improve persuasion.

    Multi-agentRAGReinforcement learning
  2. 02

    Carbon Trading Experiment

    Real-time experimental-economics platform on oTree for carbon policy, with a live WebSocket permit market and an order-matching engine.

    oTreeWebSocketReal-time
  3. 03

    Synthetic Difference-in-Differences

    Causal-inference library on PyPI implementing synthetic difference-in-differences with staggered adoption and event-study analysis.

    PythonCausal inferencePyPI
  4. 04

    Build-My-Own-Redis

    Redis-like in-memory key-value server written from scratch in C++, with TCP sockets, a poll()-based event loop, and binary protocol framing.

    C++Systems
  5. 05

    FinFlash

    Multi-agent financial-news analysis that issues BUY/HOLD/SELL verdicts — FastAPI + LangGraph, multi-LLM with local Ollama, and pgvector RAG.

    Multi-agentLLMFinance
  6. 06

    Tick-Backtest

    Tick-level XAUUSD backtester with 1H OHLC resampling, an MA-crossover + RSI strategy, genetic-algorithm optimised and out-of-sample validated.

    QuantPythonBacktesting