# Qubo Formulator

> QUBO (Quadratic Unconstrained Binary Optimization) formulation skill for optimization problems

- Skill: `a5c-ai/qubo-formulator` (Agent Skill)
- Install (CLI): `npx skillmds@latest add a5c-ai/qubo-formulator`
- Raw SKILL.md: https://api.skillmd.com/api/skills/a5c-ai/qubo-formulator/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: a5c-ai (https://skillmd.com/u/a5c-ai)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/a5c-ai/qubo-formulator

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# QUBO Formulator

## Purpose

Provides expert guidance on formulating optimization problems as QUBO/Ising models for execution on quantum annealers and variational algorithms.

## Capabilities

- Problem encoding to QUBO/Ising
- Constraint handling (penalty methods)
- Variable reduction techniques
- D-Wave integration
- QAOA cost Hamiltonian construction
- Solution decoding
- Embedding optimization
- Penalty weight tuning

## Usage Guidelines

1. **Problem Definition**: Formalize optimization problem mathematically
2. **Binary Encoding**: Convert variables to binary representation
3. **Constraint Handling**: Add penalty terms for constraints
4. **QUBO Construction**: Build quadratic matrix form
5. **Solution Interpretation**: Decode binary solutions to original problem

## Tools/Libraries

- D-Wave Ocean
- PyQUBO
- Qiskit Optimization
- dimod
- dwavebinarycsp