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Levvvi/README.md

Hi, I'm Levi 👋

About me

我做 LLM 应用工程,之前做优化算法研究。我关注如何把自然语言输入转化为结构化、可执行、可校验、可评测的系统,并通过工程化手段控制准确率、成本与延迟。

Featured projects

  • AskDB (WIP) — 中文自然语言问数 Agent:将业务问题转化为安全、可验证、可观测的 SQL 查询,计划加入 Schema RAG、自纠错 Agent Loop、SQL 安全护栏和可复现评测。
  • NL2OPT — 通过 Pydantic Schema 约束 LLM 输出,使用模板化 OR-Tools 求解与独立 Checker 验证,并提供可复现评测和失败分析。
  • MOSADE — 将多目标优化研究重构为可安装的 Python 库,包含统一 API、基准问题、统计评测、自动化测试和持续集成。

Tech stack

  • LLM Applications: DeepSeek API, Structured Outputs, Function Calling, Pydantic, Jinja2, LLM Evaluation
  • Backend & Data: Python, FastAPI, SQL, pandas, NumPy
  • Optimization: OR-Tools, CP-SAT, ALNS, Multi-objective Optimization
  • Engineering: pytest, GitHub Actions, Docker, Git, Linux/WSL2, Streamlit
  • Currently Building: LangGraph, RAG, Text-to-SQL, Qdrant, Langfuse, MCP

Pinned Loading

  1. NL2OPT NL2OPT Public

    Chinese natural-language-to-optimization Agent: DeepSeek extraction + Pydantic schemas + OR-Tools solvers + Streamlit demo; 20-case live eval 20/20.

    Python 1

  2. vrptw-hybrid-solver vrptw-hybrid-solver Public

    Hybrid VRPTW solver with OR-Tools validation, ALNS variants, Solomon/GH benchmarks, Streamlit route viewer, and OSM/Folium city demo.

    Python 1

  3. MOSADE MOSADE Public

    Multi-objective self-adaptive differential evolution: a tested, CI-backed Python library for constrained multi-objective optimization.

    Python 2